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Home Return to list Small Craft Advisory 0107 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-12-02 15:04:23 879 WHUS73 KLOT 022103 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 303 PM CST Tue Dec 2 2025 LMZ740>743-030515- /O.EXT.KLOT.SC.Y.0106.251203T0300Z-251203T1600Z/ /O.NEW.KLOT.SC.Y.0107.251204T0300Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 303 PM CST Tue Dec 2 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 PM THIS EVENING TO 10 AM CST WEDNESDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM WEDNESDAY TO 9 AM CST THURSDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 25 to 30 kt expected. For the second Small Craft Advisory, northwest winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, from 9 PM this evening to 10 AM CST Wednesday. For the second Small Craft Advisory, from 9 PM Wednesday to 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-030515- /O.CON.KLOT.SC.Y.0106.251203T0600Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 303 PM CST Tue Dec 2 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST THURSDAY... * WHAT...Southwest to west winds to 25 kt tonight into Wednesday and northwest winds to 25 to 30 kt Wednesday night into Thursday with significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...From midnight tonight to 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ RC Action: Continued Issued At: 2025-12-02 21:57:04 223 WHUS73 KLOT 030356 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 956 PM CST Tue Dec 2 2025 LMZ740>743-031200- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251203T1600Z/ /O.CON.KLOT.SC.Y.0107.251204T0300Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 956 PM CST Tue Dec 2 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST WEDNESDAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM WEDNESDAY TO 9 AM CST THURSDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 25 to 30 kt expected. For the second Small Craft Advisory, northwest winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, until 10 AM CST Wednesday. For the second Small Craft Advisory, from 9 PM Wednesday to 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-031200- /O.CON.KLOT.SC.Y.0106.251203T0600Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 956 PM CST Tue Dec 2 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THURSDAY... * WHAT...Southwest to west winds to 25 kt tonight into Wednesday and northwest winds to 25 to 30 kt Wednesday night into Thursday with significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-03 03:02:10 165 WHUS73 KLOT 030901 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 301 AM CST Wed Dec 3 2025 LMZ740>743-031715- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251203T1600Z/ /O.CON.KLOT.SC.Y.0107.251204T0300Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 301 AM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 9 AM CST THURSDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 25 kt and significant waves to 4 ft. For the second Small Craft Advisory, northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, until 10 AM CST this morning. For the second Small Craft Advisory, from 9 PM this evening to 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-031715- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 301 AM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THURSDAY... * WHAT...Southwest winds to 25 kt becoming northwest late this afternoon. Significant waves to 9 ft occasionally to 12 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-03 11:08:47 454 WHUS73 KLOT 031708 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1108 AM CST Wed Dec 3 2025 LMZ744-745-040115- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 1108 AM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THURSDAY... * WHAT...Winds shifting to northwest to 30 kt and significant waves building to 9 ft occasionally to 12 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-040115- /O.CON.KLOT.SC.Y.0107.251204T0300Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 1108 AM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 9 AM CST THURSDAY... * WHAT...Winds shifting to northwest 25 kt and significant waves building to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From 9 PM this evening to 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-03 15:15:23 918 WHUS73 KLOT 032115 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 315 PM CST Wed Dec 3 2025 LMZ740>743-040515- /O.CON.KLOT.SC.Y.0107.251204T0300Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 315 PM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 9 AM CST THURSDAY... * WHAT...Winds shifting to northwest to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From 9 PM this evening to 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-040515- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 315 PM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THURSDAY... * WHAT...Winds shifting to northwest to 25 kt and significant waves building to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-03 21:51:34 445 WHUS73 KLOT 040351 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 951 PM CST Wed Dec 3 2025 LMZ740>743-041200- /O.CON.KLOT.SC.Y.0107.000000T0000Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 951 PM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THURSDAY... * WHAT...Northwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-041200- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 951 PM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THURSDAY... * WHAT...Northwest winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-04 03:31:03 502 WHUS73 KLOT 040929 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 329 AM CST Thu Dec 4 2025 LMZ740>743-041500- /O.CON.KLOT.SC.Y.0107.000000T0000Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 329 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 9 AM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-041730- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 329 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... * WHAT...Northwest winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2025-12-04 09:08:47 941 WHUS73 KLOT 041508 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 908 AM CST Thu Dec 4 2025 LMZ740>743-041615- /O.EXP.KLOT.SC.Y.0107.000000T0000Z-251204T1500Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 908 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY HAS EXPIRED... Winds continue to subside, and no longer pose a threat for boaters. As a result, the Small Craft Advisory is being allowed to expire as scheduled. $$ LMZ744-745-042100- /O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 908 AM CST Thu Dec 4 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... * WHAT...Significant waves to 6 ft occasionally to 8 ft occurring. * WHERE...Gary to Michigan City IN. * WHEN...Until 3 PM CST this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||