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Home Return to list Small Craft Advisory 0044 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-04-06 03:46:34 862 WHUS73 KLOT 060846 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 346 AM CDT Sun Apr 6 2025 LMZ740>742-061700- /O.NEW.KLOT.SC.Y.0044.250407T0900Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 346 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM MONDAY TO 7 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 AM Monday to 7 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. && $$ LMZ743>745-061700- /O.NEW.KLOT.SC.Y.0044.250407T0900Z-250408T1500Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 346 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM MONDAY TO 10 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 AM Monday to 10 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2025-04-06 03:46:34 862 WHUS73 KLOT 060846 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 346 AM CDT Sun Apr 6 2025 LMZ740>742-061700- /O.NEW.KLOT.SC.Y.0044.250407T0900Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 346 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM MONDAY TO 7 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 AM Monday to 7 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. && $$ LMZ743>745-061700- /O.NEW.KLOT.SC.Y.0044.250407T0900Z-250408T1500Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 346 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM MONDAY TO 10 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 AM Monday to 10 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-04-06 10:15:17 072 WHUS73 KLOT 061514 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1014 AM CDT Sun Apr 6 2025 LMZ740>742-062315- /O.CON.KLOT.SC.Y.0044.250407T0900Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1014 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM MONDAY TO 7 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 AM Monday to 7 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. && $$ LMZ743>745-062315- /O.CON.KLOT.SC.Y.0044.250407T0900Z-250408T1500Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1014 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM MONDAY TO 10 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 AM Monday to 10 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-04-06 10:15:17 072 WHUS73 KLOT 061514 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1014 AM CDT Sun Apr 6 2025 LMZ740>742-062315- /O.CON.KLOT.SC.Y.0044.250407T0900Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1014 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM MONDAY TO 7 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 9 ft occasionally to 12 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 AM Monday to 7 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. && $$ LMZ743>745-062315- /O.CON.KLOT.SC.Y.0044.250407T0900Z-250408T1500Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1014 AM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM MONDAY TO 10 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt with occasional gales to 35 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 AM Monday to 10 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-04-06 15:08:54 221 WHUS73 KLOT 062008 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 308 PM CDT Sun Apr 6 2025 LMZ743>745-070415- /O.EXT.KLOT.SC.Y.0044.250407T0900Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 308 PM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 AM MONDAY TO 4 PM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. Occasional gales to 35 kt possible Monday morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 AM Monday 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. && $$ LMZ740>742-070415- /O.CON.KLOT.SC.Y.0044.250407T0900Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 308 PM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM MONDAY TO 7 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. Occasional gales to 35 kt possible Monday morning. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 AM Monday to 7 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2025-04-06 15:08:54 221 WHUS73 KLOT 062008 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 308 PM CDT Sun Apr 6 2025 LMZ743>745-070415- /O.EXT.KLOT.SC.Y.0044.250407T0900Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 308 PM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 AM MONDAY TO 4 PM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. Occasional gales to 35 kt possible Monday morning. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...From 4 AM Monday 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. && $$ LMZ740>742-070415- /O.CON.KLOT.SC.Y.0044.250407T0900Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 308 PM CDT Sun Apr 6 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM MONDAY TO 7 AM CDT TUESDAY... * WHAT...Southwest winds to 25 kt becoming north winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. Occasional gales to 35 kt possible Monday morning. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...From 4 AM Monday to 7 AM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2025-04-06 20:52:35 902 WHUS73 KLOT 070152 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 852 PM CDT Sun Apr 6 2025 LMZ740>742-071000- /O.NEW.KLOT.GL.W.0014.250407T1400Z-250407T2100Z/ /O.EXT.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 852 PM CDT Sun Apr 6 2025 ...GALE WARNING IN EFFECT FROM 9 AM TO 4 PM CDT MONDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM MONDAY TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, north winds to 35 kt and significant waves to 11 ft occasionally to 14 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, from 9 AM to 4 PM CDT Monday. For the Small Craft Advisory, from 4 PM Monday to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-071000- /O.NEW.KLOT.GL.W.0014.250407T1400Z-250408T0000Z/ /O.EXT.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 852 PM CDT Sun Apr 6 2025 ...GALE WARNING IN EFFECT FROM 9 AM TO 7 PM CDT MONDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 7 PM MONDAY TO 4 PM CDT TUESDAY... * WHAT...For the Gale Warning, north winds 35 to 40 kt and significant waves to 14 ft occasionally to 18 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 14 ft occasionally to 18 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, from 9 AM to 7 PM CDT Monday. For the Small Craft Advisory, from 7 PM Monday to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Time Extended Issued At: 2025-04-06 20:52:35 902 WHUS73 KLOT 070152 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 852 PM CDT Sun Apr 6 2025 LMZ740>742-071000- /O.NEW.KLOT.GL.W.0014.250407T1400Z-250407T2100Z/ /O.EXT.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 852 PM CDT Sun Apr 6 2025 ...GALE WARNING IN EFFECT FROM 9 AM TO 4 PM CDT MONDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM MONDAY TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, north winds to 35 kt and significant waves to 11 ft occasionally to 14 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, from 9 AM to 4 PM CDT Monday. For the Small Craft Advisory, from 4 PM Monday to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-071000- /O.NEW.KLOT.GL.W.0014.250407T1400Z-250408T0000Z/ /O.EXT.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 852 PM CDT Sun Apr 6 2025 ...GALE WARNING IN EFFECT FROM 9 AM TO 7 PM CDT MONDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 7 PM MONDAY TO 4 PM CDT TUESDAY... * WHAT...For the Gale Warning, north winds 35 to 40 kt and significant waves to 14 ft occasionally to 18 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 14 ft occasionally to 18 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, from 9 AM to 7 PM CDT Monday. For the Small Craft Advisory, from 7 PM Monday to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 03:39:04 246 WHUS73 KLOT 070838 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 338 AM CDT Mon Apr 7 2025 LMZ740>742-071645- /O.CON.KLOT.GL.W.0014.250407T1400Z-250407T2100Z/ /O.CON.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 338 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 PM CDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, north gales to 40 kt and significant waves to 10 ft occasionally to 13 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, from 9 AM this morning to 4 PM CDT this afternoon. For the Small Craft Advisory, from 4 PM this afternoon to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-071645- /O.CON.KLOT.GL.W.0014.250407T1400Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 338 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... * WHAT...For the Gale Warning, north gales to 40 kt and significant waves to 14 ft occasionally to 18 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, from 9 AM this morning to 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 03:39:04 246 WHUS73 KLOT 070838 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 338 AM CDT Mon Apr 7 2025 LMZ740>742-071645- /O.CON.KLOT.GL.W.0014.250407T1400Z-250407T2100Z/ /O.CON.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 338 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 PM CDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, north gales to 40 kt and significant waves to 10 ft occasionally to 13 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, from 9 AM this morning to 4 PM CDT this afternoon. For the Small Craft Advisory, from 4 PM this afternoon to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-071645- /O.CON.KLOT.GL.W.0014.250407T1400Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 338 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... * WHAT...For the Gale Warning, north gales to 40 kt and significant waves to 14 ft occasionally to 18 ft expected. For the Small Craft Advisory, north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, from 9 AM this morning to 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 05:16:07 238 WHUS73 KLOT 071015 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 515 AM CDT Mon Apr 7 2025 LMZ740>742-071815- /O.NEW.KLOT.SC.Y.0045.250407T1015Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.250407T1400Z-250407T2100Z/ /O.CON.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 515 AM CDT Mon Apr 7 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 PM CDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM CDT TUESDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 30 kt shifting northwest. For the Gale Warning, north gales to 40 kt and significant waves to 10 ft occasionally to 13 ft expected. For the second Small Craft Advisory, north winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the first Small Craft Advisory, until 9 AM CDT this morning. For the Gale Warning, from 9 AM this morning to 4 PM CDT this afternoon. For the second Small Craft Advisory, from 4 PM this afternoon to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-071815- /O.NEW.KLOT.SC.Y.0045.250407T1015Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.250407T1400Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 515 AM CDT Mon Apr 7 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 25 kt. For the Gale Warning, north gales to 40 kt and significant waves to 14 ft occasionally to 18 ft expected. For the second Small Craft Advisory, north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 9 AM CDT this morning. For the Gale Warning, from 9 AM this morning to 7 PM CDT this evening. For the second Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 05:16:07 238 WHUS73 KLOT 071015 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 515 AM CDT Mon Apr 7 2025 LMZ740>742-071815- /O.NEW.KLOT.SC.Y.0045.250407T1015Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.250407T1400Z-250407T2100Z/ /O.CON.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 515 AM CDT Mon Apr 7 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 PM CDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM CDT TUESDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 30 kt shifting northwest. For the Gale Warning, north gales to 40 kt and significant waves to 10 ft occasionally to 13 ft expected. For the second Small Craft Advisory, north winds to 30 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the first Small Craft Advisory, until 9 AM CDT this morning. For the Gale Warning, from 9 AM this morning to 4 PM CDT this afternoon. For the second Small Craft Advisory, from 4 PM this afternoon to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-071815- /O.NEW.KLOT.SC.Y.0045.250407T1015Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.250407T1400Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 515 AM CDT Mon Apr 7 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... * WHAT...For the first Small Craft Advisory, southwest winds to 25 kt. For the Gale Warning, north gales to 40 kt and significant waves to 14 ft occasionally to 18 ft expected. For the second Small Craft Advisory, north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 9 AM CDT this morning. For the Gale Warning, from 9 AM this morning to 7 PM CDT this evening. For the second Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 09:13:00 516 WHUS73 KLOT 071412 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 912 AM CDT Mon Apr 7 2025 LMZ740>742-072215- /O.EXP.KLOT.SC.Y.0045.000000T0000Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.000000T0000Z-250407T2100Z/ /O.CON.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 912 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, north winds to 40 kt and significant waves to 10 ft occasionally to 13 ft. For the Small Craft Advisory, north winds to 35 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, until 4 PM CDT this afternoon. For the Small Craft Advisory, from 4 PM this afternoon to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-072215- /O.EXP.KLOT.SC.Y.0045.000000T0000Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.000000T0000Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 912 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...For the Gale Warning, north winds to 40 kt and significant waves to 14 ft occasionally to 18 ft. For the Small Craft Advisory, north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, until 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 09:13:00 516 WHUS73 KLOT 071412 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 912 AM CDT Mon Apr 7 2025 LMZ740>742-072215- /O.EXP.KLOT.SC.Y.0045.000000T0000Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.000000T0000Z-250407T2100Z/ /O.CON.KLOT.SC.Y.0044.250407T2100Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 912 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, north winds to 40 kt and significant waves to 10 ft occasionally to 13 ft. For the Small Craft Advisory, north winds to 35 kt and significant waves to 10 ft occasionally to 13 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, until 4 PM CDT this afternoon. For the Small Craft Advisory, from 4 PM this afternoon to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-072215- /O.EXP.KLOT.SC.Y.0045.000000T0000Z-250407T1400Z/ /O.CON.KLOT.GL.W.0014.000000T0000Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 912 AM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...For the Gale Warning, north winds to 40 kt and significant waves to 14 ft occasionally to 18 ft. For the Small Craft Advisory, north winds to 30 kt and significant waves to 12 ft occasionally to 16 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, until 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Time Extended Issued At: 2025-04-07 15:43:24 552 WHUS73 KLOT 072042 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 342 PM CDT Mon Apr 7 2025 LMZ740>742-080445- /O.EXT.KLOT.GL.W.0014.000000T0000Z-250408T0000Z/ /O.EXT.KLOT.SC.Y.0044.250408T0000Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 342 PM CDT Mon Apr 7 2025 ...GALE WARNING NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, northeast gales to 35 kt and significant waves to 11 ft occasionally to 14 ft. For the Small Craft Advisory, north winds to 30 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, until 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-080445- /O.CON.KLOT.GL.W.0014.000000T0000Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 342 PM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... * WHAT...For the Gale Warning, north winds to 35 kt and significant waves to 14 ft occasionally to 18 ft. For the Small Craft Advisory, north winds to 30 kt and significant waves to 14 ft occasionally to 18 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, until 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-04-07 15:43:24 552 WHUS73 KLOT 072042 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 342 PM CDT Mon Apr 7 2025 LMZ740>742-080445- /O.EXT.KLOT.GL.W.0014.000000T0000Z-250408T0000Z/ /O.EXT.KLOT.SC.Y.0044.250408T0000Z-250408T1200Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 342 PM CDT Mon Apr 7 2025 ...GALE WARNING NOW IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 7 PM THIS EVENING TO 7 AM CDT TUESDAY... * WHAT...For the Gale Warning, northeast gales to 35 kt and significant waves to 11 ft occasionally to 14 ft. For the Small Craft Advisory, north winds to 30 kt and significant waves to 11 ft occasionally to 14 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL. * WHEN...For the Gale Warning, until 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 7 AM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ743>745-080445- /O.CON.KLOT.GL.W.0014.000000T0000Z-250408T0000Z/ /O.CON.KLOT.SC.Y.0044.250408T0000Z-250408T2100Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 342 PM CDT Mon Apr 7 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 4 PM CDT TUESDAY... * WHAT...For the Gale Warning, north winds to 35 kt and significant waves to 14 ft occasionally to 18 ft. For the Small Craft Advisory, north winds to 30 kt and significant waves to 14 ft occasionally to 18 ft expected. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...For the Gale Warning, until 7 PM CDT this evening. For the Small Craft Advisory, from 7 PM this evening to 4 PM CDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||