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Home Return to list Small Craft Advisory 0108 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-12-04 14:32:57 254 WHUS73 KLOT 042032 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 232 PM CST Thu Dec 4 2025 LMZ744-745-050445- /O.EXP.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ /O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Gary to Michigan City IN. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740-050445- /O.NEW.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...From midnight tonight to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>743-050445- /O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Wilmette Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2025-12-04 14:32:57 254 WHUS73 KLOT 042032 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 232 PM CST Thu Dec 4 2025 LMZ744-745-050445- /O.EXP.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ /O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Gary to Michigan City IN. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740-050445- /O.NEW.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...From midnight tonight to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>743-050445- /O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Wilmette Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2025-12-04 14:32:57 254 WHUS73 KLOT 042032 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 232 PM CST Thu Dec 4 2025 LMZ744-745-050445- /O.EXP.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ /O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Gary to Michigan City IN. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740-050445- /O.NEW.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...From midnight tonight to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>743-050445- /O.NEW.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 232 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Wilmette Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-04 21:39:38 950 WHUS73 KLOT 050339 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 939 PM CST Thu Dec 4 2025 LMZ740-051145- /O.CON.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 939 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...From midnight tonight to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>745-051145- /O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 939 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Calumet Harbor IL to Michigan City IN, and Wilmette Harbor to Calumet Harbor IL. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-04 21:39:38 950 WHUS73 KLOT 050339 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 939 PM CST Thu Dec 4 2025 LMZ740-051145- /O.CON.KLOT.SC.Y.0108.251205T0600Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 939 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor IL. * WHEN...From midnight tonight to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>745-051145- /O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 939 PM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Calumet Harbor IL to Michigan City IN, and Wilmette Harbor to Calumet Harbor IL. * WHEN...From noon Friday to midnight CST Friday night. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-05 04:05:04 281 WHUS73 KLOT 051004 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 404 AM CST Fri Dec 5 2025 LMZ740-051815- /O.CON.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 404 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor, IL. * WHEN...Until midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>745-051815- /O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 404 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Calumet Harbor, IL to Michigan City, IN, and Wilmette Harbor to Calumet Harbor, IL. * WHEN...From noon today to midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-05 04:05:04 281 WHUS73 KLOT 051004 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 404 AM CST Fri Dec 5 2025 LMZ740-051815- /O.CON.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 404 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Winthrop Harbor to Wilmette Harbor, IL. * WHEN...Until midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>745-051815- /O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 404 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Calumet Harbor, IL to Michigan City, IN, and Wilmette Harbor to Calumet Harbor, IL. * WHEN...From noon today to midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-05 09:09:45 161 WHUS73 KLOT 051509 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 909 AM CST Fri Dec 5 2025 LMZ740-052315- /O.CON.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 909 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt occurring. * WHERE...Winthrop Harbor to Wilmette Harbor, IL. * WHEN...Until midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The strongest winds are occurring a mile or two offshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>745-052315- /O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 909 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Calumet Harbor, IL to Michigan City, IN, and Wilmette Harbor to Calumet Harbor, IL. * WHEN...From noon today to midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The strongest winds are occurring a mile or two offshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-05 09:09:45 161 WHUS73 KLOT 051509 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 909 AM CST Fri Dec 5 2025 LMZ740-052315- /O.CON.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- 909 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt occurring. * WHERE...Winthrop Harbor to Wilmette Harbor, IL. * WHEN...Until midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The strongest winds are occurring a mile or two offshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ741>745-052315- /O.CON.KLOT.SC.Y.0108.251205T1800Z-251206T0600Z/ Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 909 AM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt expected. * WHERE...Calumet Harbor, IL to Michigan City, IN, and Wilmette Harbor to Calumet Harbor, IL. * WHEN...From noon today to midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The strongest winds are occurring a mile or two offshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-05 14:26:22 137 WHUS73 KLOT 052025 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 225 PM CST Fri Dec 5 2025 LMZ740>745-060430- /O.CON.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 225 PM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt occurring. * WHERE...Winthrop Harbor to Wilmette Harbor, IL. * WHEN...Until midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...The strongest winds are occurring a mile or two offshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-05 21:38:33 976 WHUS73 KLOT 060338 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 938 PM CST Fri Dec 5 2025 LMZ740>745-060600- /O.CON.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 938 PM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Southwest winds to 25 kt occurring. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until midnight CST tonight. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2025-12-05 23:58:37 422 WHUS73 KLOT 060558 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1158 PM CST Fri Dec 5 2025 LMZ740>745-060700- /O.EXP.KLOT.SC.Y.0108.000000T0000Z-251206T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1158 PM CST Fri Dec 5 2025 ...SMALL CRAFT ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT... Winds will continue to gradually subside through the night. $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||