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Home Return to list Heat Advisory 0001 Issued by the Mount Holly / Philadelphia Forecast Office
Action: New Issued At: 2026-05-18 01:52:46 079 WWUS71 KPHI 180652 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 252 AM EDT Mon May 18 2026 NJZ015-017>019-PAZ070-071-104-106-182015- /O.NEW.KPHI.HT.Y.0001.260518T1600Z-260520T0000Z/ Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Norristown, Cherry Hill, Trenton, Philadelphia, Camden, Glassboro, Moorestown, Doylestown, Morrisville, Mount Holly, Lansdale, and Media 252 AM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT TUESDAY... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From noon today to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting temperatures possible through Wednesday. Tuesday will likely be the hottest day with highs in the mid 90s throughout the urban corridor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Time Extended Issued At: 2026-05-18 13:11:20 097 WWUS71 KPHI 181810 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 210 PM EDT Mon May 18 2026 DEZ001-PAZ102-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Eastern Chester- Including the cities of Wilmington, Kennett Square, and West Chester 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In Delaware, New Castle County. In Pennsylvania, Eastern Chester County. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Wharton State Forest, Jackson, and New Brunswick 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-190900- /O.EXA.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Washington, Oxford, Morristown, Collegeville, Bethlehem, Flemington, Chalfont, Perkasie, Honey Brook, Easton, Somerville, Reading, Allentown, and Pottstown 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values up to 97 expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Tuesday, with maximum heat indices of 95 to near 100 degrees during peak heating through Tuesday afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ015-017>019-PAZ070-071-104-106-190900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Morrisville, Camden, Cherry Hill, Mount Holly, Trenton, Lansdale, Moorestown, Doylestown, Philadelphia, Media, Norristown, and Glassboro 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Time and Area Extended Issued At: 2026-05-18 13:11:20 097 WWUS71 KPHI 181810 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 210 PM EDT Mon May 18 2026 DEZ001-PAZ102-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Eastern Chester- Including the cities of Wilmington, Kennett Square, and West Chester 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In Delaware, New Castle County. In Pennsylvania, Eastern Chester County. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Wharton State Forest, Jackson, and New Brunswick 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-190900- /O.EXA.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Washington, Oxford, Morristown, Collegeville, Bethlehem, Flemington, Chalfont, Perkasie, Honey Brook, Easton, Somerville, Reading, Allentown, and Pottstown 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values up to 97 expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Tuesday, with maximum heat indices of 95 to near 100 degrees during peak heating through Tuesday afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ015-017>019-PAZ070-071-104-106-190900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Morrisville, Camden, Cherry Hill, Mount Holly, Trenton, Lansdale, Moorestown, Doylestown, Philadelphia, Media, Norristown, and Glassboro 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Time and Area Extended Issued At: 2026-05-18 13:11:20 097 WWUS71 KPHI 181810 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 210 PM EDT Mon May 18 2026 DEZ001-PAZ102-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Eastern Chester- Including the cities of Wilmington, Kennett Square, and West Chester 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In Delaware, New Castle County. In Pennsylvania, Eastern Chester County. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Wharton State Forest, Jackson, and New Brunswick 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-190900- /O.EXA.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Washington, Oxford, Morristown, Collegeville, Bethlehem, Flemington, Chalfont, Perkasie, Honey Brook, Easton, Somerville, Reading, Allentown, and Pottstown 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values up to 97 expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Tuesday, with maximum heat indices of 95 to near 100 degrees during peak heating through Tuesday afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ015-017>019-PAZ070-071-104-106-190900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Morrisville, Camden, Cherry Hill, Mount Holly, Trenton, Lansdale, Moorestown, Doylestown, Philadelphia, Media, Norristown, and Glassboro 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Area Extended Issued At: 2026-05-18 13:11:20 097 WWUS71 KPHI 181810 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 210 PM EDT Mon May 18 2026 DEZ001-PAZ102-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Eastern Chester- Including the cities of Wilmington, Kennett Square, and West Chester 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In Delaware, New Castle County. In Pennsylvania, Eastern Chester County. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-190900- /O.EXB.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Wharton State Forest, Jackson, and New Brunswick 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-190900- /O.EXA.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Washington, Oxford, Morristown, Collegeville, Bethlehem, Flemington, Chalfont, Perkasie, Honey Brook, Easton, Somerville, Reading, Allentown, and Pottstown 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values up to 97 expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Tuesday, with maximum heat indices of 95 to near 100 degrees during peak heating through Tuesday afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ015-017>019-PAZ070-071-104-106-190900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Morrisville, Camden, Cherry Hill, Mount Holly, Trenton, Lansdale, Moorestown, Doylestown, Philadelphia, Media, Norristown, and Glassboro 210 PM EDT Mon May 18 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98. * WHERE...In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Continued Issued At: 2026-05-19 02:26:45 054 WWUS71 KPHI 190726 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 326 AM EDT Tue May 19 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Mount Holly, Cherry Hill, Camden, Media, West Chester, Morrisville, Doylestown, Moorestown, Lansdale, Glassboro, Norristown, Philadelphia, Trenton, Kennett Square, and Wilmington 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Morristown, Reading, Bethlehem, Chalfont, Somerville, Washington, Collegeville, Honey Brook, Perkasie, Flemington, Pottstown, Allentown, and Easton 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through today, with maximum heat indices of 95 to near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of New Brunswick, Jackson, Freehold, and Wharton State Forest 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Continued Issued At: 2026-05-19 02:26:45 054 WWUS71 KPHI 190726 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 326 AM EDT Tue May 19 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Mount Holly, Cherry Hill, Camden, Media, West Chester, Morrisville, Doylestown, Moorestown, Lansdale, Glassboro, Norristown, Philadelphia, Trenton, Kennett Square, and Wilmington 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Morristown, Reading, Bethlehem, Chalfont, Somerville, Washington, Collegeville, Honey Brook, Perkasie, Flemington, Pottstown, Allentown, and Easton 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through today, with maximum heat indices of 95 to near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of New Brunswick, Jackson, Freehold, and Wharton State Forest 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Continued Issued At: 2026-05-19 02:26:45 054 WWUS71 KPHI 190726 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 326 AM EDT Tue May 19 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Mount Holly, Cherry Hill, Camden, Media, West Chester, Morrisville, Doylestown, Moorestown, Lansdale, Glassboro, Norristown, Philadelphia, Trenton, Kennett Square, and Wilmington 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260520T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Morristown, Reading, Bethlehem, Chalfont, Somerville, Washington, Collegeville, Honey Brook, Perkasie, Flemington, Pottstown, Allentown, and Easton 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through today, with maximum heat indices of 95 to near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-192030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of New Brunswick, Jackson, Freehold, and Wharton State Forest 326 AM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Record setting high temperatures are quite possible through Wednesday, with maximum heat indices nearing 100 degrees during peak heating each afternoon. Given the intensity of this early season stretch of heat and humidity, we are not acclimated to it yet and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will break this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Continued Issued At: 2026-05-19 13:26:25 200 WWUS71 KPHI 191825 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 225 PM EDT Tue May 19 2026 NJZ007>010-PAZ060>062-101-103-105-200900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Allentown, Chalfont, Morristown, Collegeville, Pottstown, Flemington, Easton, Washington, Somerville, Honey Brook, Perkasie, Reading, and Bethlehem 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then around 95 degrees Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-200900- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Trenton, Philadelphia, Lansdale, Cherry Hill, Media, Mount Holly, Norristown, Morrisville, Camden, Kennett Square, West Chester, Moorestown, Doylestown, and Glassboro 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 99 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then again on Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-200900- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Wharton State Forest, New Brunswick, Freehold, and Jackson 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 99 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then again on Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Time Extended Issued At: 2026-05-19 13:26:25 200 WWUS71 KPHI 191825 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 225 PM EDT Tue May 19 2026 NJZ007>010-PAZ060>062-101-103-105-200900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Allentown, Chalfont, Morristown, Collegeville, Pottstown, Flemington, Easton, Washington, Somerville, Honey Brook, Perkasie, Reading, and Bethlehem 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then around 95 degrees Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-200900- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Trenton, Philadelphia, Lansdale, Cherry Hill, Media, Mount Holly, Norristown, Morrisville, Camden, Kennett Square, West Chester, Moorestown, Doylestown, and Glassboro 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 99 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then again on Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-200900- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Wharton State Forest, New Brunswick, Freehold, and Jackson 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 99 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then again on Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Continued Issued At: 2026-05-19 13:26:25 200 WWUS71 KPHI 191825 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 225 PM EDT Tue May 19 2026 NJZ007>010-PAZ060>062-101-103-105-200900- /O.EXT.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Oxford, Allentown, Chalfont, Morristown, Collegeville, Pottstown, Flemington, Easton, Washington, Somerville, Honey Brook, Perkasie, Reading, and Bethlehem 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then around 95 degrees Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-200900- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Trenton, Philadelphia, Lansdale, Cherry Hill, Media, Mount Holly, Norristown, Morrisville, Camden, Kennett Square, West Chester, Moorestown, Doylestown, and Glassboro 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 99 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then again on Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-200900- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Wharton State Forest, New Brunswick, Freehold, and Jackson 225 PM EDT Tue May 19 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 99 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon and then again on Wednesday. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later Wednesday afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Continued Issued At: 2026-05-20 02:27:37 653 WWUS71 KPHI 200727 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 327 AM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Kennett Square, Lansdale, Philadelphia, Trenton, Morrisville, Doylestown, Glassboro, Moorestown, Mount Holly, Media, West Chester, Wilmington, Cherry Hill, Norristown, and Camden 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Collegeville, Washington, Reading, Allentown, Flemington, Somerville, Honey Brook, Bethlehem, Perkasie, Easton, Pottstown, Chalfont, and Oxford 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 93 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 95 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Jackson, Freehold, New Brunswick, and Wharton State Forest 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Continued Issued At: 2026-05-20 02:27:37 653 WWUS71 KPHI 200727 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 327 AM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Kennett Square, Lansdale, Philadelphia, Trenton, Morrisville, Doylestown, Glassboro, Moorestown, Mount Holly, Media, West Chester, Wilmington, Cherry Hill, Norristown, and Camden 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Collegeville, Washington, Reading, Allentown, Flemington, Somerville, Honey Brook, Bethlehem, Perkasie, Easton, Pottstown, Chalfont, and Oxford 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 93 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 95 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Jackson, Freehold, New Brunswick, and Wharton State Forest 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Continued Issued At: 2026-05-20 02:27:37 653 WWUS71 KPHI 200727 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 327 AM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Kennett Square, Lansdale, Philadelphia, Trenton, Morrisville, Doylestown, Glassboro, Moorestown, Mount Holly, Media, West Chester, Wilmington, Cherry Hill, Norristown, and Camden 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Collegeville, Washington, Reading, Allentown, Flemington, Somerville, Honey Brook, Bethlehem, Perkasie, Easton, Pottstown, Chalfont, and Oxford 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 93 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 95 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-202030- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Jackson, Freehold, New Brunswick, and Wharton State Forest 327 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Maximum heat indices near 100 degrees during peak heating this afternoon. Given the intensity of this early season stretch of heat and humidity, we are not fully acclimated to it and therefore impacts could be greater if precautions are not taken. Showers and some thunderstorms arrive later this afternoon and evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ AKL Action: Continued Issued At: 2026-05-20 09:35:47 963 WWUS71 KPHI 201435 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ Issued by National Weather Service Wakefield VA 1035 AM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 93. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ MRD Action: Continued Issued At: 2026-05-20 09:35:47 963 WWUS71 KPHI 201435 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ Issued by National Weather Service Wakefield VA 1035 AM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 93. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ MRD Action: Continued Issued At: 2026-05-20 09:35:47 963 WWUS71 KPHI 201435 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ Issued by National Weather Service Wakefield VA 1035 AM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 97. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 93. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-202245- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- 1035 AM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ MRD Action: Continued Issued At: 2026-05-20 12:53:24 699 WWUS71 KPHI 201753 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 153 PM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Trenton, Cherry Hill, Camden, Glassboro, Mount Holly, West Chester, Moorestown, Media, Kennett Square, Norristown, Morrisville, Lansdale, Wilmington, Philadelphia, and Doylestown 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive late this afternoon and this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Reading, Perkasie, Morristown, Washington, Chalfont, Flemington, Easton, Bethlehem, Oxford, Pottstown, Allentown, Somerville, Honey Brook, and Collegeville 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 96 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive into this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Jackson, New Brunswick, and Wharton State Forest 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Continued Issued At: 2026-05-20 12:53:24 699 WWUS71 KPHI 201753 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 153 PM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Trenton, Cherry Hill, Camden, Glassboro, Mount Holly, West Chester, Moorestown, Media, Kennett Square, Norristown, Morrisville, Lansdale, Wilmington, Philadelphia, and Doylestown 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive late this afternoon and this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Reading, Perkasie, Morristown, Washington, Chalfont, Flemington, Easton, Bethlehem, Oxford, Pottstown, Allentown, Somerville, Honey Brook, and Collegeville 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 96 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive into this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Jackson, New Brunswick, and Wharton State Forest 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Continued Issued At: 2026-05-20 12:53:24 699 WWUS71 KPHI 201753 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 153 PM EDT Wed May 20 2026 DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Mercer-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Trenton, Cherry Hill, Camden, Glassboro, Mount Holly, West Chester, Moorestown, Media, Kennett Square, Norristown, Morrisville, Lansdale, Wilmington, Philadelphia, and Doylestown 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive late this afternoon and this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ007>010-PAZ060>062-101-103-105-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Reading, Perkasie, Morristown, Washington, Chalfont, Flemington, Easton, Bethlehem, Oxford, Pottstown, Allentown, Somerville, Honey Brook, and Collegeville 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 96 degrees expected. * WHERE...In New Jersey, Morris, Somerset, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive into this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ NJZ012-013-020-027-210000- /O.CON.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ Middlesex-Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Jackson, New Brunswick, and Wharton State Forest 153 PM EDT Wed May 20 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 98 degrees expected. * WHERE...Western Monmouth, Middlesex, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Showers and thunderstorms arrive this evening which will end this early season heat. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. && $$ Gorse Action: Cancelled Issued At: 2026-05-20 17:35:33 754 WWUS71 KPHI 202235 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 635 PM EDT Wed May 20 2026 DEZ001-NJZ007>010-012-013-015-017>020-027-PAZ060>062-070-071-101>106- 202345- /O.CAN.KPHI.HT.Y.0001.000000T0000Z-260521T0000Z/ New Castle-Warren-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Berks-Lehigh-Northampton-Delaware- Philadelphia-Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Freehold, Wharton State Forest, Lansdale, Cherry Hill, Flemington, Norristown, Morrisville, Kennett Square, Collegeville, West Chester, Easton, Oxford, Perkasie, Media, Glassboro, Pottstown, Philadelphia, Camden, Jackson, Washington, Honey Brook, Moorestown, Wilmington, Trenton, Morristown, Doylestown, Mount Holly, Chalfont, Allentown, New Brunswick, Reading, Somerville, and Bethlehem 635 PM EDT Wed May 20 2026 ...HEAT ADVISORY IS CANCELLED... A cold front will cross the area and excessive heat is no longer expected. $$ PO | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||