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Home Return to list Small Craft Advisory 0118 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-12-24 03:17:41 504 WHUS73 KLOT 240917 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 317 AM CST Wed Dec 24 2025 LMZ740-741-241730- /O.NEW.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 317 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-241730- /O.NEW.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 317 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: New Issued At: 2025-12-24 03:17:41 504 WHUS73 KLOT 240917 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 317 AM CST Wed Dec 24 2025 LMZ740-741-241730- /O.NEW.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 317 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-241730- /O.NEW.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 317 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-24 09:59:16 135 WHUS73 KLOT 241558 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 958 AM CST Wed Dec 24 2025 LMZ740-741-250000- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 958 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island, IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-250000- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 958 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor, IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-24 09:59:16 135 WHUS73 KLOT 241558 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 958 AM CST Wed Dec 24 2025 LMZ740-741-250000- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 958 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island, IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-250000- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 958 AM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor, IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-24 14:52:52 751 WHUS73 KLOT 242052 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 252 PM CST Wed Dec 24 2025 LMZ740-741-250500- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 252 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island, IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-250500- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 252 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor, IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-24 14:52:52 751 WHUS73 KLOT 242052 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 252 PM CST Wed Dec 24 2025 LMZ740-741-250500- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 252 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island, IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-250500- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 252 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor, IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-24 21:28:32 284 WHUS73 KLOT 250328 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 928 PM CST Wed Dec 24 2025 LMZ740-741-251130- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 928 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-251130- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 928 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-24 21:28:32 284 WHUS73 KLOT 250328 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 928 PM CST Wed Dec 24 2025 LMZ740-741-251130- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 928 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-251130- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 928 PM CST Wed Dec 24 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON THURSDAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 02:23:09 762 WHUS73 KLOT 250822 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 222 AM CST Thu Dec 25 2025 LMZ740-741-251630- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 222 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-251630- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 222 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 02:23:09 762 WHUS73 KLOT 250822 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 222 AM CST Thu Dec 25 2025 LMZ740-741-251630- /O.CON.KLOT.SC.Y.0118.251225T1500Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 222 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...From 9 AM Thursday to noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-251630- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 222 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 AM CST FRIDAY... * WHAT...East winds to 20 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...From noon Thursday to 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 09:25:43 400 WHUS73 KLOT 251525 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 925 AM CST Thu Dec 25 2025 LMZ740-741-252330- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 925 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-252330- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 925 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 09:25:43 400 WHUS73 KLOT 251525 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 925 AM CST Thu Dec 25 2025 LMZ740-741-252330- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 925 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-252330- /O.CON.KLOT.SC.Y.0118.251225T1800Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 925 AM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 14:47:21 761 WHUS73 KLOT 252047 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 247 PM CST Thu Dec 25 2025 LMZ740-741-260500- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 247 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-260500- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 247 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 14:47:21 761 WHUS73 KLOT 252047 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 247 PM CST Thu Dec 25 2025 LMZ740-741-260500- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 247 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-260500- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 247 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...East winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Area Extended Issued At: 2025-12-25 21:51:03 682 WHUS73 KLOT 260350 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 950 PM CST Thu Dec 25 2025 LMZ743>745-261200- /O.EXA.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 5 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740-741-261200- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-261200- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 21:51:03 682 WHUS73 KLOT 260350 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 950 PM CST Thu Dec 25 2025 LMZ743>745-261200- /O.EXA.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 5 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740-741-261200- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-261200- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-25 21:51:03 682 WHUS73 KLOT 260350 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 950 PM CST Thu Dec 25 2025 LMZ743>745-261200- /O.EXA.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 5 ft. * WHERE...Calumet Harbor IL to Michigan City IN. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740-741-261200- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1800Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 8 ft occasionally to 10 ft. * WHERE...Winthrop Harbor to Northerly Island IL. * WHEN...Until noon CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ742-261200- /O.CON.KLOT.SC.Y.0118.000000T0000Z-251226T1200Z/ Northerly Island to Calumet Harbor IL- 950 PM CST Thu Dec 25 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY... * WHAT...Southeast winds to 30 kt and significant waves to 6 ft occasionally to 8 ft. * WHERE...Northerly Island to Calumet Harbor IL. * WHEN...Until 6 AM CST Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||