WHUS73 KLOT 201952 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 252 PM CDT Sun Sep 20 2026 LMZ740>742-210400- /O.EXT.KLOT.SC.Y.0083.000000T0000Z-260924T0000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 252 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT WEDNESDAY... * 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 7 PM CDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ743-744-210400- /O.EXT.KLOT.SC.Y.0083.000000T0000Z-260923T1500Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- 252 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 AM CDT WEDNESDAY... * WHAT...Northeast winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Calumet Harbor IL to Burns Harbor IN. * WHEN...Until 10 AM CDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ745-210400- /O.CON.KLOT.SC.Y.0083.000000T0000Z-260921T1200Z/ Burns Harbor to Michigan City IN- 252 PM CDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM CDT MONDAY... * WHAT...Northeast winds to 25 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Burns Harbor to Michigan City IN. * WHEN...Until 7 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. && $$