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Home Return to list Gale Warning 0015 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-03-22 07:19:11 029 WHUS73 KLOT 221218 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 718 AM CDT Sun Mar 22 2026 LMZ740>742-230000- /O.UPG.KLOT.SC.Y.0032.000000T0000Z-260323T1800Z/ /O.NEW.KLOT.GL.W.0015.260322T1218Z-260323T0300Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 718 AM CDT Sun Mar 22 2026 ...GALE WARNING IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North gales to 35 kt and significant waves to 11 ft occasionally to 14 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CDT 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. && $$ LMZ743>745-230000- /O.UPG.KLOT.SC.Y.0032.260322T1500Z-260323T2100Z/ /O.NEW.KLOT.GL.W.0015.260322T1600Z-260323T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 718 AM CDT Sun Mar 22 2026 ...GALE WARNING IN EFFECT FROM 11 AM THIS MORNING TO 10 PM CDT THIS EVENING... * WHAT...North gales to 35 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 11 AM this morning to 10 PM CDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: New Issued At: 2026-03-22 07:19:11 029 WHUS73 KLOT 221218 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 718 AM CDT Sun Mar 22 2026 LMZ740>742-230000- /O.UPG.KLOT.SC.Y.0032.000000T0000Z-260323T1800Z/ /O.NEW.KLOT.GL.W.0015.260322T1218Z-260323T0300Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 718 AM CDT Sun Mar 22 2026 ...GALE WARNING IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North gales to 35 kt and significant waves to 11 ft occasionally to 14 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CDT 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. && $$ LMZ743>745-230000- /O.UPG.KLOT.SC.Y.0032.260322T1500Z-260323T2100Z/ /O.NEW.KLOT.GL.W.0015.260322T1600Z-260323T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 718 AM CDT Sun Mar 22 2026 ...GALE WARNING IN EFFECT FROM 11 AM THIS MORNING TO 10 PM CDT THIS EVENING... * WHAT...North gales to 35 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 11 AM this morning to 10 PM CDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-03-22 09:32:46 220 WHUS73 KLOT 221432 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 932 AM CDT Sun Mar 22 2026 LMZ740>742-222245- /O.CON.KLOT.GL.W.0015.000000T0000Z-260323T0300Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 932 AM CDT Sun Mar 22 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North winds to 35 kt and significant waves to 11 ft occasionally to 14 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CDT 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. && $$ LMZ743>745-222245- /O.CON.KLOT.GL.W.0015.260322T1600Z-260323T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 932 AM CDT Sun Mar 22 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North winds to 35 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-03-22 09:32:46 220 WHUS73 KLOT 221432 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 932 AM CDT Sun Mar 22 2026 LMZ740>742-222245- /O.CON.KLOT.GL.W.0015.000000T0000Z-260323T0300Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 932 AM CDT Sun Mar 22 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North winds to 35 kt and significant waves to 11 ft occasionally to 14 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 10 PM CDT 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. && $$ LMZ743>745-222245- /O.CON.KLOT.GL.W.0015.260322T1600Z-260323T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 932 AM CDT Sun Mar 22 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North winds to 35 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2026-03-22 14:30:54 638 WHUS73 KLOT 221930 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 230 PM CDT Sun Mar 22 2026 LMZ740>745-230300- /O.CON.KLOT.GL.W.0015.000000T0000Z-260323T0300Z/ 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- 230 PM CDT Sun Mar 22 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North winds 35 to 40 kt and significant waves to 12 ft occasionally to 16 ft. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 10 PM CDT 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. && $$ Action: Time Extended Issued At: 2026-03-22 21:53:37 481 WHUS73 KLOT 230253 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 953 PM CDT Sun Mar 22 2026 LMZ740>745-230600- /O.EXT.KLOT.GL.W.0015.000000T0000Z-260323T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 953 PM CDT Sun Mar 22 2026 ...GALE WARNING NOW IN EFFECT UNTIL 1 AM CDT MONDAY... * WHAT...North gales to 35 kt and significant waves to 12 ft occasionally to 16 ft occurring. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 1 AM CDT Monday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Expired Issued At: 2026-03-23 00:46:13 701 WHUS73 KLOT 230545 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1245 AM CDT Mon Mar 23 2026 LMZ740>742-231345- /O.EXP.KLOT.GL.W.0015.000000T0000Z-260323T0600Z/ /O.NEW.KLOT.SC.Y.0033.260323T0600Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1245 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... ...GALE WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING... * WHAT...North winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 PM CDT 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. && $$ LMZ743>745-231345- /O.EXP.KLOT.GL.W.0015.000000T0000Z-260323T0600Z/ /O.NEW.KLOT.SC.Y.0033.260323T0600Z-260324T0200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1245 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...GALE WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING... * WHAT...North winds to 30 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2026-03-23 00:46:13 701 WHUS73 KLOT 230545 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1245 AM CDT Mon Mar 23 2026 LMZ740>742-231345- /O.EXP.KLOT.GL.W.0015.000000T0000Z-260323T0600Z/ /O.NEW.KLOT.SC.Y.0033.260323T0600Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1245 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... ...GALE WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING... * WHAT...North winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 PM CDT 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. && $$ LMZ743>745-231345- /O.EXP.KLOT.GL.W.0015.000000T0000Z-260323T0600Z/ /O.NEW.KLOT.SC.Y.0033.260323T0600Z-260324T0200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1245 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...GALE WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING... * WHAT...North winds to 30 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||