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Home Return to list Small Craft Advisory 0075 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-07-31 03:16:56 480 WHUS73 KLOT 310816 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 AM CDT Fri Jul 31 2026 LMZ740>742-311630- /O.NEW.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 316 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-311630- /O.NEW.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 316 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 8 ft occasionally to 10 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2026-07-31 03:16:56 480 WHUS73 KLOT 310816 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 AM CDT Fri Jul 31 2026 LMZ740>742-311630- /O.NEW.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 316 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-311630- /O.NEW.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 316 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 8 ft occasionally to 10 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-07-31 10:10:47 707 WHUS73 KLOT 311510 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1010 AM CDT Fri Jul 31 2026 LMZ740>742-312315- /O.CON.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1010 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-312315- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1010 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-07-31 10:10:47 707 WHUS73 KLOT 311510 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1010 AM CDT Fri Jul 31 2026 LMZ740>742-312315- /O.CON.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1010 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-312315- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1010 AM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-07-31 15:18:55 600 WHUS73 KLOT 312018 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 318 PM CDT Fri Jul 31 2026 LMZ740>742-010430- /O.CON.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 318 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-010430- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 318 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-07-31 15:18:55 600 WHUS73 KLOT 312018 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 318 PM CDT Fri Jul 31 2026 LMZ740>742-010430- /O.CON.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 318 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-010430- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 318 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-07-31 21:07:08 783 WHUS73 KLOT 010206 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 906 PM CDT Fri Jul 31 2026 LMZ740>742-011015- /O.CON.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 906 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-011015- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 906 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor, IL to Michigan City, IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-07-31 21:07:08 783 WHUS73 KLOT 010206 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 906 PM CDT Fri Jul 31 2026 LMZ740>742-011015- /O.CON.KLOT.SC.Y.0075.260801T0800Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 906 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...From 3 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-011015- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 906 PM CDT Fri Jul 31 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM SATURDAY TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor, IL to Michigan City, IN. * WHEN...From 9 AM Saturday to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 03:05:47 047 WHUS73 KLOT 010805 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 305 AM CDT Sat Aug 1 2026 LMZ740>742-011615- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 305 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-011615- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 305 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM this morning to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 03:05:47 047 WHUS73 KLOT 010805 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 305 AM CDT Sat Aug 1 2026 LMZ740>742-011615- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 305 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-011615- /O.CON.KLOT.SC.Y.0075.260801T1400Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 305 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 9 AM this morning to 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 10:11:14 963 WHUS73 KLOT 011510 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1010 AM CDT Sat Aug 1 2026 LMZ740>742-012315- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1010 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-012315- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1010 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 10:11:14 963 WHUS73 KLOT 011510 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1010 AM CDT Sat Aug 1 2026 LMZ740>742-012315- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1010 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-012315- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1010 AM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 15:10:53 833 WHUS73 KLOT 012010 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 310 PM CDT Sat Aug 1 2026 LMZ740>742-020415- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 310 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-020415- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 310 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 15:10:53 833 WHUS73 KLOT 012010 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 310 PM CDT Sat Aug 1 2026 LMZ740>742-020415- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 310 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-020415- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 310 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 21:49:06 659 WHUS73 KLOT 020248 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 948 PM CDT Sat Aug 1 2026 LMZ740>742-021100- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 948 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-021100- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 948 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-01 21:49:06 659 WHUS73 KLOT 020248 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 948 PM CDT Sat Aug 1 2026 LMZ740>742-021100- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 948 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-021100- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 948 PM CDT Sat Aug 1 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 30 kt and significant waves to 9 ft occasionally to 12 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 03:10:13 235 WHUS73 KLOT 020809 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 309 AM CDT Sun Aug 2 2026 LMZ740>742-021615- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 309 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-021615- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 309 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 03:10:13 235 WHUS73 KLOT 020809 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 309 AM CDT Sun Aug 2 2026 LMZ740>742-021615- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 309 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-021615- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 309 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 09:20:44 812 WHUS73 KLOT 021420 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 920 AM CDT Sun Aug 2 2026 LMZ740>742-022230- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 920 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-022230- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 920 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 09:20:44 812 WHUS73 KLOT 021420 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 920 AM CDT Sun Aug 2 2026 LMZ740>742-022230- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 920 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-022230- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 920 AM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 14:49:22 283 WHUS73 KLOT 021948 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 248 PM CDT Sun Aug 2 2026 LMZ740>742-030400- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 248 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-030400- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 248 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 14:49:22 283 WHUS73 KLOT 021948 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 248 PM CDT Sun Aug 2 2026 LMZ740>742-030400- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 248 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-030400- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 248 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 21:26:33 653 WHUS73 KLOT 030226 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 926 PM CDT Sun Aug 2 2026 LMZ740>742-030800- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 926 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 20 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-030800- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 926 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 20 kt and significant waves to 7 ft occasionally to 9 ft. * WHERE...Calumet Harbor IL to Michigan City, IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-02 21:26:33 653 WHUS73 KLOT 030226 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 926 PM CDT Sun Aug 2 2026 LMZ740>742-030800- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 926 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...North winds to 20 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-030800- /O.CON.KLOT.SC.Y.0075.000000T0000Z-260803T0800Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 926 PM CDT Sun Aug 2 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT MONDAY... * WHAT...Northeast winds to 20 kt and significant waves to 7 ft occasionally to 9 ft. * WHERE...Calumet Harbor IL to Michigan City, IN. * WHEN...Until 3 AM CDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2026-08-03 02:42:09 905 WHUS73 KLOT 030741 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 241 AM CDT Mon Aug 3 2026 LMZ740>742-031400- /O.EXT.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 241 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-031400- /O.EXT.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 241 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2026-08-03 02:42:09 905 WHUS73 KLOT 030741 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 241 AM CDT Mon Aug 3 2026 LMZ740>742-031400- /O.EXT.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 241 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743>745-031400- /O.EXT.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 241 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2026-08-03 08:58:43 902 WHUS73 KLOT 031358 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 858 AM CDT Mon Aug 3 2026 LMZ740>742-031500- /O.EXP.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 858 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... $$ LMZ743>745-031500- /O.EXP.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 858 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... $$ Action: Expired Issued At: 2026-08-03 08:58:43 902 WHUS73 KLOT 031358 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 858 AM CDT Mon Aug 3 2026 LMZ740>742-031500- /O.EXP.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 858 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... $$ LMZ743>745-031500- /O.EXP.KLOT.SC.Y.0075.000000T0000Z-260803T1400Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 858 AM CDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM CDT THIS MORNING... $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||