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Home Return to list Small Craft Advisory 0023 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-02-24 18:02:29 876 WHUS73 KLOT 250002 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 602 PM CST Tue Feb 24 2026 LMZ740>745-250815- /O.EXP.KLOT.GL.W.0011.000000T0000Z-260225T0000Z/ /O.NEW.KLOT.SC.Y.0023.260225T0002Z-260225T1600Z/ 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- 602 PM CST Tue Feb 24 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST WEDNESDAY... ...GALE WARNING HAS EXPIRED... * WHAT...Southwest to west winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 10 AM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-02-24 21:54:36 227 WHUS73 KLOT 250354 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 954 PM CST Tue Feb 24 2026 LMZ744-745-251200- /O.EXT.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 954 PM CST Tue Feb 24 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM CST WEDNESDAY... * WHAT...Southwest winds to 25 kt becoming northwest and significant waves to 6 ft occasionally to 8 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 4 PM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-251200- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T1600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 954 PM CST Tue Feb 24 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST WEDNESDAY... * WHAT...West to northwest winds to 25 kt and significant waves to 4 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 10 AM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2026-02-24 21:54:36 227 WHUS73 KLOT 250354 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 954 PM CST Tue Feb 24 2026 LMZ744-745-251200- /O.EXT.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 954 PM CST Tue Feb 24 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM CST WEDNESDAY... * WHAT...Southwest winds to 25 kt becoming northwest and significant waves to 6 ft occasionally to 8 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 4 PM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-251200- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T1600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 954 PM CST Tue Feb 24 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST WEDNESDAY... * WHAT...West to northwest winds to 25 kt and significant waves to 4 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 10 AM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-02-25 03:02:44 370 WHUS73 KLOT 250902 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 302 AM CST Wed Feb 25 2026 LMZ740>743-251600- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T1600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 302 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS MORNING... * WHAT...West to northwest winds to 25 kt and significant waves to 4 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 10 AM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-251715- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 302 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CST THIS AFTERNOON... * WHAT...Northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 4 PM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-02-25 03:02:44 370 WHUS73 KLOT 250902 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 302 AM CST Wed Feb 25 2026 LMZ740>743-251600- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T1600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 302 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS MORNING... * WHAT...West to northwest winds to 25 kt and significant waves to 4 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 10 AM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-251715- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 302 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CST THIS AFTERNOON... * WHAT...Northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 4 PM CST Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-02-25 09:41:16 456 WHUS73 KLOT 251541 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 941 AM CST Wed Feb 25 2026 LMZ740>743-251645- /O.EXP.KLOT.SC.Y.0023.000000T0000Z-260225T1600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 941 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM CST THIS MORNING... Winds and waves have diminished allowing the advisory to expire. $$ LMZ744-745-252200- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 941 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CST THIS AFTERNOON... * WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 4 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. && $$ Action: Expired Issued At: 2026-02-25 09:41:16 456 WHUS73 KLOT 251541 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 941 AM CST Wed Feb 25 2026 LMZ740>743-251645- /O.EXP.KLOT.SC.Y.0023.000000T0000Z-260225T1600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 941 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 AM CST THIS MORNING... Winds and waves have diminished allowing the advisory to expire. $$ LMZ744-745-252200- /O.CON.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 941 AM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CST THIS AFTERNOON... * WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until 4 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. && $$ Action: Cancelled Issued At: 2026-02-25 14:37:24 861 WHUS73 KLOT 252036 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 236 PM CST Wed Feb 25 2026 LMZ744-745-252145- /O.CAN.KLOT.SC.Y.0023.000000T0000Z-260225T2200Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 236 PM CST Wed Feb 25 2026 ...SMALL CRAFT ADVISORY IS CANCELLED... Winds and waves have diminished, allowing the advisory to be cancelled. $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||