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Home Return to list Gale Warning 0011 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-02-23 14:47:53 590 WHUS73 KLOT 232047 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 247 PM CST Mon Feb 23 2026 LMZ744-745-240900- /O.EXP.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/ /O.EXB.KLOT.SC.Y.0022.260223T2100Z-260224T0900Z/ /O.NEW.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 247 PM CST Mon Feb 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CST TUESDAY... ...GALE WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... * WHAT...For the Small Craft Advisory, northwest winds to 25 kt and significant waves to 11 ft occasionally to 14 ft expected. For the Gale Warning, south winds to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Small Craft Advisory, until 3 AM CST Tuesday. For the Gale Warning, from 9 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ740>743-240900- /O.EXT.KLOT.SC.Y.0022.000000T0000Z-260224T0300Z/ /O.NEW.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 247 PM CST Mon Feb 23 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM CST THIS EVENING... ...GALE WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... * WHAT...For the Small Craft Advisory, north winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. For the Gale Warning, south winds to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Small Craft Advisory, until 9 PM CST this evening. For the Gale Warning, from 9 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: New Issued At: 2026-02-23 14:47:53 590 WHUS73 KLOT 232047 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 247 PM CST Mon Feb 23 2026 LMZ744-745-240900- /O.EXP.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/ /O.EXB.KLOT.SC.Y.0022.260223T2100Z-260224T0900Z/ /O.NEW.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 247 PM CST Mon Feb 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CST TUESDAY... ...GALE WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... * WHAT...For the Small Craft Advisory, northwest winds to 25 kt and significant waves to 11 ft occasionally to 14 ft expected. For the Gale Warning, south winds to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Small Craft Advisory, until 3 AM CST Tuesday. For the Gale Warning, from 9 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ740>743-240900- /O.EXT.KLOT.SC.Y.0022.000000T0000Z-260224T0300Z/ /O.NEW.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 247 PM CST Mon Feb 23 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM CST THIS EVENING... ...GALE WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... * WHAT...For the Small Craft Advisory, north winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. For the Gale Warning, south winds to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Small Craft Advisory, until 9 PM CST this evening. For the Gale Warning, from 9 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-02-23 21:07:34 274 WHUS73 KLOT 240306 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 906 PM CST Mon Feb 23 2026 LMZ740>743-241115- /O.EXP.KLOT.SC.Y.0022.000000T0000Z-260224T0300Z/ /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 906 PM CST Mon Feb 23 2026 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...South winds to 35 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 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ744-745-241115- /O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/ /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 906 PM CST Mon Feb 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST TUESDAY... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... * WHAT...For the Small Craft Advisory, significant waves to 7 ft occasionally to 9 ft. For the Gale Warning, south winds to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Small Craft Advisory, until 3 AM CST Tuesday. For the Gale Warning, from 9 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-02-23 21:07:34 274 WHUS73 KLOT 240306 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 906 PM CST Mon Feb 23 2026 LMZ740>743-241115- /O.EXP.KLOT.SC.Y.0022.000000T0000Z-260224T0300Z/ /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 906 PM CST Mon Feb 23 2026 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...South winds to 35 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 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ744-745-241115- /O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/ /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 906 PM CST Mon Feb 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST TUESDAY... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY... * WHAT...For the Small Craft Advisory, significant waves to 7 ft occasionally to 9 ft. For the Gale Warning, south winds to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Small Craft Advisory, until 3 AM CST Tuesday. For the Gale Warning, from 9 AM to 6 PM CST Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-02-24 03:15:42 118 WHUS73 KLOT 240915 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 315 AM CST Tue Feb 24 2026 LMZ744-745-241715- /O.EXP.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/ /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 315 AM CST Tue Feb 24 2026 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Southwest gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...From 9 AM this morning to 6 PM CST this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ740>743-241715- /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 315 AM CST Tue Feb 24 2026 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING... * WHAT...Southwest gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From 9 AM this morning to 6 PM CST this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-02-24 03:15:42 118 WHUS73 KLOT 240915 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 315 AM CST Tue Feb 24 2026 LMZ744-745-241715- /O.EXP.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/ /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 315 AM CST Tue Feb 24 2026 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Southwest gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...From 9 AM this morning to 6 PM CST this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ740>743-241715- /O.CON.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 315 AM CST Tue Feb 24 2026 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 6 PM CST THIS EVENING... * WHAT...Southwest gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From 9 AM this morning to 6 PM CST this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-02-24 09:06:15 039 WHUS73 KLOT 241505 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 905 AM CST Tue Feb 24 2026 LMZ740>745-242315- /O.CON.KLOT.GL.W.0011.000000T0000Z-260225T0000Z/ 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- 905 AM CST Tue Feb 24 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Gales to 35 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 AM this morning to 6 PM CST this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-02-24 14:24:23 162 WHUS73 KLOT 242023 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 223 PM CST Tue Feb 24 2026 LMZ740>745-250000- /O.CON.KLOT.GL.W.0011.000000T0000Z-260225T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 223 PM CST Tue Feb 24 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Gales to 35 kt and significant waves to 5 ft ongoing. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 6 PM CST this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Expired 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. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||