|
Home Return to list Small Craft Advisory 0033 Issued by the Chicago Forecast Office
Action: New 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: New 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: Continued Issued At: 2026-03-23 03:16:46 258 WHUS73 KLOT 230816 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 AM CDT Mon Mar 23 2026 LMZ740>742-231630- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 316 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...North winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * 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. && $$ LMZ743>745-231630- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260324T0200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 316 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...North winds to 30 kt and significant waves to 10 ft occasionally to 13 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-03-23 03:16:46 258 WHUS73 KLOT 230816 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 AM CDT Mon Mar 23 2026 LMZ740>742-231630- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 316 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...North winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * 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. && $$ LMZ743>745-231630- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260324T0200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 316 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...North winds to 30 kt and significant waves to 10 ft occasionally to 13 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-03-23 10:10:48 621 WHUS73 KLOT 231510 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1010 AM CDT Mon Mar 23 2026 LMZ740>742-232000- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1010 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...North winds to 25 kt and significant waves to 7 ft occasionally to 9 ft. * 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. && $$ LMZ743>745-232315- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260324T0200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1010 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...North winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-03-23 10:10:48 621 WHUS73 KLOT 231510 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1010 AM CDT Mon Mar 23 2026 LMZ740>742-232000- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1010 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON... * WHAT...North winds to 25 kt and significant waves to 7 ft occasionally to 9 ft. * 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. && $$ LMZ743>745-232315- /O.CON.KLOT.SC.Y.0033.000000T0000Z-260324T0200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1010 AM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...North winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2026-03-23 14:55:26 606 WHUS73 KLOT 231955 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 255 PM CDT Mon Mar 23 2026 LMZ740>742-232100- /O.EXP.KLOT.SC.Y.0033.000000T0000Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 255 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 3 PM CDT THIS AFTERNOON... Waves will continue to subside this afternoon. $$ LMZ743>745-240300- /O.EXT.KLOT.SC.Y.0033.000000T0000Z-260324T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 255 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North to northeast winds to 25 kt and significant waves to 7 ft occasionally to 9 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2026-03-23 14:55:26 606 WHUS73 KLOT 231955 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 255 PM CDT Mon Mar 23 2026 LMZ740>742-232100- /O.EXP.KLOT.SC.Y.0033.000000T0000Z-260323T2000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 255 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 3 PM CDT THIS AFTERNOON... Waves will continue to subside this afternoon. $$ LMZ743>745-240300- /O.EXT.KLOT.SC.Y.0033.000000T0000Z-260324T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 255 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM CDT THIS EVENING... * WHAT...North to northeast winds to 25 kt and significant waves to 7 ft occasionally to 9 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2026-03-23 21:52:11 842 WHUS73 KLOT 240252 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 952 PM CDT Mon Mar 23 2026 LMZ743>745-240400- /O.EXP.KLOT.SC.Y.0033.000000T0000Z-260324T0300Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 952 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 10 PM CDT THIS EVENING... Waves continue to diminish therefore the Small Craft Advisory will be allowed to expire. $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||