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Home Return to list Small Craft Advisory 0059 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-05-18 21:51:38 390 WHUS73 KLOT 190251 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 951 PM CDT Mon May 18 2026 LMZ740>745-191100- /O.NEW.KLOT.SC.Y.0059.260519T1100Z-260519T2100Z/ 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- 951 PM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 4 PM CDT TUESDAY... * WHAT...Southwest winds to 25 kt. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 6 AM to 4 PM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-05-19 04:09:34 113 WHUS73 KLOT 190909 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 409 AM CDT Tue May 19 2026 LMZ740>745-191715- /O.CON.KLOT.SC.Y.0059.260519T1100Z-260519T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 409 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Southwest winds to 25 kt. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...From 6 AM to 4 PM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-05-19 09:39:47 448 WHUS73 KLOT 191439 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 939 AM CDT Tue May 19 2026 LMZ740>745-192100- /O.CON.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ 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- 939 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... * WHAT...Southwest winds to 30 kt. * WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL to Michigan City IN. * WHEN...Until 4 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. && $$ Action: Cancelled Issued At: 2026-05-19 15:00:59 939 WHUS73 KLOT 192000 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 300 PM CDT Tue May 19 2026 LMZ740>742-200400- /O.CAN.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ /O.NEW.KLOT.SC.Y.0060.260520T1500Z-260521T0900Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 300 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 4 AM CDT THURSDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 10 AM Wednesday to 4 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-200400- /O.CAN.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ /O.NEW.KLOT.SC.Y.0060.260520T1200Z-260521T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 300 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM WEDNESDAY TO 4 AM CDT THURSDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 7 AM Wednesday to 4 AM CDT 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. && $$ Action: Cancelled Issued At: 2026-05-19 15:00:59 939 WHUS73 KLOT 192000 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 300 PM CDT Tue May 19 2026 LMZ740>742-200400- /O.CAN.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ /O.NEW.KLOT.SC.Y.0060.260520T1500Z-260521T0900Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 300 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM WEDNESDAY TO 4 AM CDT THURSDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 10 AM Wednesday to 4 AM CDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-200400- /O.CAN.KLOT.SC.Y.0059.000000T0000Z-260519T2100Z/ /O.NEW.KLOT.SC.Y.0060.260520T1200Z-260521T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 300 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM WEDNESDAY TO 4 AM CDT THURSDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 7 AM Wednesday to 4 AM CDT 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. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||