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Home Return to list Small Craft Advisory 0069 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-06-20 15:00:56 844 WHUS73 KLOT 202000 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 300 PM CDT Sat Jun 20 2026 LMZ740>742-210400- /O.NEW.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 300 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM SUNDAY TO 1 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 PM Sunday to 1 AM 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. && $$ LMZ743>745-210400- /O.NEW.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 300 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM SUNDAY TO 4 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM Sunday to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2026-06-20 15:00:56 844 WHUS73 KLOT 202000 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 300 PM CDT Sat Jun 20 2026 LMZ740>742-210400- /O.NEW.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 300 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM SUNDAY TO 1 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 PM Sunday to 1 AM 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. && $$ LMZ743>745-210400- /O.NEW.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 300 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM SUNDAY TO 4 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM Sunday to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-20 21:10:37 347 WHUS73 KLOT 210209 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 909 PM CDT Sat Jun 20 2026 LMZ740>742-211015- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 909 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO 1 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 PM Sunday to 1 AM 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. && $$ LMZ743>745-211015- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 909 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO 4 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM Sunday to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-20 21:10:37 347 WHUS73 KLOT 210209 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 909 PM CDT Sat Jun 20 2026 LMZ740>742-211015- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 909 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO 1 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 PM Sunday to 1 AM 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. && $$ LMZ743>745-211015- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 909 PM CDT Sat Jun 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO 4 AM CDT TUESDAY... * WHAT...Northeast winds 25 to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM Sunday to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 03:51:19 419 WHUS73 KLOT 210850 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 350 AM CDT Sun Jun 21 2026 LMZ740>742-211700- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 350 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...From 4 PM this afternoon to 1 AM 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. && $$ LMZ743>745-211700- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 350 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM this afternoon to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 03:51:19 419 WHUS73 KLOT 210850 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 350 AM CDT Sun Jun 21 2026 LMZ740>742-211700- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 350 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...From 4 PM this afternoon to 1 AM 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. && $$ LMZ743>745-211700- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 350 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM this afternoon to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 09:46:18 719 WHUS73 KLOT 211445 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 945 AM CDT Sun Jun 21 2026 LMZ740>742-212245- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 945 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 PM this afternoon to 1 AM 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. && $$ LMZ743>745-212245- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 945 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM this afternoon to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 09:46:18 719 WHUS73 KLOT 211445 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 945 AM CDT Sun Jun 21 2026 LMZ740>742-212245- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 945 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 1 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 PM this afternoon to 1 AM 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. && $$ LMZ743>745-212245- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 945 AM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 PM this afternoon to 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 14:46:28 543 WHUS73 KLOT 211946 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 246 PM CDT Sun Jun 21 2026 LMZ740>742-220400- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 246 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-220400- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 246 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 14:46:28 543 WHUS73 KLOT 211946 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 246 PM CDT Sun Jun 21 2026 LMZ740>742-220400- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 246 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-220400- /O.CON.KLOT.SC.Y.0069.260621T2100Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 246 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 21:02:11 649 WHUS73 KLOT 220201 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 901 PM CDT Sun Jun 21 2026 LMZ740>742-221015- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 901 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...East winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-221015- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 901 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...East winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-21 21:02:11 649 WHUS73 KLOT 220201 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 901 PM CDT Sun Jun 21 2026 LMZ740>742-221015- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 901 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...East winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-221015- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 901 PM CDT Sun Jun 21 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...East winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 02:21:21 645 WHUS73 KLOT 220720 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 220 AM CDT Mon Jun 22 2026 LMZ740>742-221530- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 220 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-221530- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 220 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City, IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 02:21:21 645 WHUS73 KLOT 220720 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 220 AM CDT Mon Jun 22 2026 LMZ740>742-221530- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 220 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor, IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-221530- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 220 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...North to northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City, IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 09:14:56 921 WHUS73 KLOT 221414 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 914 AM CDT Mon Jun 22 2026 LMZ740>742-222215- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 914 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...North winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-222215- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 914 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...North winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 09:14:56 921 WHUS73 KLOT 221414 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 914 AM CDT Mon Jun 22 2026 LMZ740>742-222215- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 914 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...North winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-222215- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 914 AM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...North winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 14:40:08 362 WHUS73 KLOT 221939 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 239 PM CDT Mon Jun 22 2026 LMZ740>742-230345- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 239 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * 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 1 AM 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. && $$ LMZ743>745-230345- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 239 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...North winds to 20 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 14:40:08 362 WHUS73 KLOT 221939 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 239 PM CDT Mon Jun 22 2026 LMZ740>742-230345- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 239 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * 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 1 AM 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. && $$ LMZ743>745-230345- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 239 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...North winds to 20 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 21:18:51 850 WHUS73 KLOT 230218 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 918 PM CDT Mon Jun 22 2026 LMZ740>742-230600- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 918 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...Significant waves to 6 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-230830- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 918 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...Significant waves to 6 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-06-22 21:18:51 850 WHUS73 KLOT 230218 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 918 PM CDT Mon Jun 22 2026 LMZ740>742-230600- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0600Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 918 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT TUESDAY... * WHAT...Significant waves to 6 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...Until 1 AM 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. && $$ LMZ743>745-230830- /O.CON.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 918 PM CDT Mon Jun 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... * WHAT...Significant waves to 6 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 4 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2026-06-23 03:41:33 095 WHUS73 KLOT 230840 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 340 AM CDT Tue Jun 23 2026 LMZ743>745-230945- /O.EXP.KLOT.SC.Y.0069.000000T0000Z-260623T0900Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 340 AM CDT Tue Jun 23 2026 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 AM CDT EARLY THIS MORNING... Waves will continue to subside today. $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||