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Home Return to list Small Craft Advisory 0117 Issued by the Chicago Forecast Office
Action: New Issued At: 2025-12-19 03:10:50 053 WHUS73 KLOT 190910 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 310 AM CST Fri Dec 19 2025 LMZ740>743-191715- /O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/ /O.NEW.KLOT.SC.Y.0116.251219T1500Z-251219T2000Z/ /O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 310 AM CST Fri Dec 19 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 2 PM CST THIS AFTERNOON... ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the Gale Warning, west gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the first Small Craft Advisory, northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. For the second Small Craft Advisory, southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Gale Warning, until 9 AM CST this morning. For the first Small Craft Advisory, from 9 AM this morning to 2 PM CST this afternoon. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...A few gale force gusts possible late tonight into Saturday morning. 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. && $$ LMZ744-745-191715- /O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/ /O.NEW.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/ /O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 310 AM CST Fri Dec 19 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the Gale Warning, west winds to 40 kt and significant waves to 11 ft occasionally to 14 ft expected. For the first Small Craft Advisory, west winds to 25 kt and significant waves to 9 ft occasionally to 12 ft expected. For the second Small Craft Advisory, south winds to 35 kt and significant waves to 5 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, until noon CST today. For the first Small Craft Advisory, from noon today to 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...A few gale force gusts possible late tonight into Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: New Issued At: 2025-12-19 03:10:50 053 WHUS73 KLOT 190910 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 310 AM CST Fri Dec 19 2025 LMZ740>743-191715- /O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/ /O.NEW.KLOT.SC.Y.0116.251219T1500Z-251219T2000Z/ /O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 310 AM CST Fri Dec 19 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 2 PM CST THIS AFTERNOON... ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the Gale Warning, west gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the first Small Craft Advisory, northwest winds to 25 kt and significant waves to 6 ft occasionally to 8 ft expected. For the second Small Craft Advisory, southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Gale Warning, until 9 AM CST this morning. For the first Small Craft Advisory, from 9 AM this morning to 2 PM CST this afternoon. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...A few gale force gusts possible late tonight into Saturday morning. 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. && $$ LMZ744-745-191715- /O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/ /O.NEW.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/ /O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 310 AM CST Fri Dec 19 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the Gale Warning, west winds to 40 kt and significant waves to 11 ft occasionally to 14 ft expected. For the first Small Craft Advisory, west winds to 25 kt and significant waves to 9 ft occasionally to 12 ft expected. For the second Small Craft Advisory, south winds to 35 kt and significant waves to 5 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, until noon CST today. For the first Small Craft Advisory, from noon today to 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. * ADDITIONAL DETAILS...A few gale force gusts possible late tonight into Saturday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 09:10:14 375 WHUS73 KLOT 191509 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 909 AM CST Fri Dec 19 2025 LMZ740>743-192315- /O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/ /O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 909 AM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...GALE WARNING HAS EXPIRED... * WHAT...For the first Small Craft Advisory, northwest winds to 30 kt. For the second Small Craft Advisory, southwest winds to 30 kt. Significant waves up to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, until 2 PM CST this afternoon. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-192315- /O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/ /O.CON.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 909 AM CST Fri Dec 19 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the Gale Warning, northwest winds to 35 kt and significant waves to 10 ft occasionally to 13 ft. For the first Small Craft Advisory, west winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. For the second Small Craft Advisory, south winds to 30 kt and significant waves to 5 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, until noon CST today. For the first Small Craft Advisory, until 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 09:10:14 375 WHUS73 KLOT 191509 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 909 AM CST Fri Dec 19 2025 LMZ740>743-192315- /O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/ /O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 909 AM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...GALE WARNING HAS EXPIRED... * WHAT...For the first Small Craft Advisory, northwest winds to 30 kt. For the second Small Craft Advisory, southwest winds to 30 kt. Significant waves up to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, until 2 PM CST this afternoon. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-192315- /O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/ /O.CON.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 909 AM CST Fri Dec 19 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the Gale Warning, northwest winds to 35 kt and significant waves to 10 ft occasionally to 13 ft. For the first Small Craft Advisory, west winds to 30 kt and significant waves to 9 ft occasionally to 12 ft expected. For the second Small Craft Advisory, south winds to 30 kt and significant waves to 5 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, until noon CST today. For the first Small Craft Advisory, until 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 12:02:49 059 WHUS73 KLOT 191802 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1202 PM CST Fri Dec 19 2025 LMZ744-745-200215- /O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/ /O.CON.KLOT.SC.Y.0116.000000T0000Z-251220T0200Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 1202 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...GALE WARNING HAS EXPIRED... * WHAT...For the first Small Craft Advisory, west winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. For the second Small Craft Advisory, south winds to 30 kt and significant waves to 5 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-200215- /O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 1202 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the first Small Craft Advisory, west winds to 25 kt and significant waves to 5 ft. For the second Small Craft Advisory, southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, until 2 PM CST this afternoon. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 12:02:49 059 WHUS73 KLOT 191802 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1202 PM CST Fri Dec 19 2025 LMZ744-745-200215- /O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/ /O.CON.KLOT.SC.Y.0116.000000T0000Z-251220T0200Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 1202 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...GALE WARNING HAS EXPIRED... * WHAT...For the first Small Craft Advisory, west winds to 25 kt and significant waves to 8 ft occasionally to 10 ft. For the second Small Craft Advisory, south winds to 30 kt and significant waves to 5 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-200215- /O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 1202 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the first Small Craft Advisory, west winds to 25 kt and significant waves to 5 ft. For the second Small Craft Advisory, southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the first Small Craft Advisory, until 2 PM CST this afternoon. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 14:04:53 178 WHUS73 KLOT 192004 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 204 PM CST Fri Dec 19 2025 LMZ740>743-200415- /O.EXP.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 204 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-200415- /O.CON.KLOT.SC.Y.0116.000000T0000Z-251220T0200Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 204 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the first Small Craft Advisory, west winds to 20 kt and significant waves to 7 ft occasionally to 9 ft. For the second Small Craft Advisory, south to southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 14:04:53 178 WHUS73 KLOT 192004 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 204 PM CST Fri Dec 19 2025 LMZ740>743-200415- /O.EXP.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 204 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED... * WHAT...Southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-200415- /O.CON.KLOT.SC.Y.0116.000000T0000Z-251220T0200Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 204 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM CST SATURDAY... * WHAT...For the first Small Craft Advisory, west winds to 20 kt and significant waves to 7 ft occasionally to 9 ft. For the second Small Craft Advisory, south to southwest winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 8 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to 3 PM CST Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2025-12-19 15:19:55 419 WHUS73 KLOT 192119 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 319 PM CST Fri Dec 19 2025 LMZ744-745-200530- /O.EXT.KLOT.SC.Y.0116.000000T0000Z-251220T0000Z/ /O.EXT.KLOT.SC.Y.0117.251220T0600Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 319 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST SUNDAY... * WHAT...For the first Small Craft Advisory, significant waves to 6 ft occasionally to 8 ft. For the second Small Craft Advisory, winds to 30 kt and significant waves up to 7 ft occasionally to 9 ft expected. A few gusts to 35 kt gales possible late tonight into Saturday morning. * WHERE...Gary to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 6 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-200530- /O.EXT.KLOT.SC.Y.0117.251220T0600Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 319 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM CST SUNDAY... * WHAT...Winds to 30 kt and significant waves up to 6 ft occasionally to 8 ft expected. A few gusts to 35 kt gales possible late tonight into Saturday morning. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From midnight tonight to 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2025-12-19 15:19:55 419 WHUS73 KLOT 192119 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 319 PM CST Fri Dec 19 2025 LMZ744-745-200530- /O.EXT.KLOT.SC.Y.0116.000000T0000Z-251220T0000Z/ /O.EXT.KLOT.SC.Y.0117.251220T0600Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 319 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST SUNDAY... * WHAT...For the first Small Craft Advisory, significant waves to 6 ft occasionally to 8 ft. For the second Small Craft Advisory, winds to 30 kt and significant waves up to 7 ft occasionally to 9 ft expected. A few gusts to 35 kt gales possible late tonight into Saturday morning. * WHERE...Gary to Michigan City IN. * WHEN...For the first Small Craft Advisory, until 6 PM CST this evening. For the second Small Craft Advisory, from midnight tonight to noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-200530- /O.EXT.KLOT.SC.Y.0117.251220T0600Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 319 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM CST SUNDAY... * WHAT...Winds to 30 kt and significant waves up to 6 ft occasionally to 8 ft expected. A few gusts to 35 kt gales possible late tonight into Saturday morning. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From midnight tonight to 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 18:00:10 850 WHUS73 KLOT 192359 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 559 PM CST Fri Dec 19 2025 LMZ744-745-201200- /O.EXP.KLOT.SC.Y.0116.000000T0000Z-251220T0000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 559 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST SUNDAY... ...SMALL CRAFT ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING... * WHAT...Winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...From midnight tonight to noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-201200- /O.CON.KLOT.SC.Y.0117.251220T0600Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 559 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM CST SUNDAY... * WHAT...Winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From midnight tonight to 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-19 18:00:10 850 WHUS73 KLOT 192359 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 559 PM CST Fri Dec 19 2025 LMZ744-745-201200- /O.EXP.KLOT.SC.Y.0116.000000T0000Z-251220T0000Z/ /O.CON.KLOT.SC.Y.0117.251220T0600Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 559 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST SUNDAY... ...SMALL CRAFT ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING... * WHAT...Winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...From midnight tonight to noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ740>743-201200- /O.CON.KLOT.SC.Y.0117.251220T0600Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 559 PM CST Fri Dec 19 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM CST SUNDAY... * WHAT...Winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...From midnight tonight to 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time Extended Issued At: 2025-12-19 19:53:02 561 WHUS73 KLOT 200152 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 752 PM CST Fri Dec 19 2025 LMZ740>743-201200- /O.NEW.KLOT.GL.W.0033.251220T0600Z-251220T1500Z/ /O.EXT.KLOT.SC.Y.0117.251220T1500Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 752 PM CST Fri Dec 19 2025 ...GALE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST SATURDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM SATURDAY TO 4 AM CST SUNDAY... * WHAT...For the Gale Warning, gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the Small Craft Advisory, winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Gale Warning, from midnight tonight to 9 AM CST Saturday. For the Small Craft Advisory, from 9 AM Saturday to 4 AM CST Sunday. * 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. && $$ LMZ744-745-201200- /O.NEW.KLOT.GL.W.0033.251220T0600Z-251220T1500Z/ /O.EXT.KLOT.SC.Y.0117.251220T1500Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 752 PM CST Fri Dec 19 2025 ...GALE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST SATURDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM SATURDAY TO NOON CST SUNDAY... * WHAT...For the Gale Warning, gales to 35 kt and significant waves to 5 ft expected. For the Small Craft Advisory, winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, from midnight tonight to 9 AM CST Saturday. For the Small Craft Advisory, from 9 AM Saturday to noon CST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Time Extended Issued At: 2025-12-19 19:53:02 561 WHUS73 KLOT 200152 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 752 PM CST Fri Dec 19 2025 LMZ740>743-201200- /O.NEW.KLOT.GL.W.0033.251220T0600Z-251220T1500Z/ /O.EXT.KLOT.SC.Y.0117.251220T1500Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 752 PM CST Fri Dec 19 2025 ...GALE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST SATURDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM SATURDAY TO 4 AM CST SUNDAY... * WHAT...For the Gale Warning, gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the Small Craft Advisory, winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Gale Warning, from midnight tonight to 9 AM CST Saturday. For the Small Craft Advisory, from 9 AM Saturday to 4 AM CST Sunday. * 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. && $$ LMZ744-745-201200- /O.NEW.KLOT.GL.W.0033.251220T0600Z-251220T1500Z/ /O.EXT.KLOT.SC.Y.0117.251220T1500Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 752 PM CST Fri Dec 19 2025 ...GALE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST SATURDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 AM SATURDAY TO NOON CST SUNDAY... * WHAT...For the Gale Warning, gales to 35 kt and significant waves to 5 ft expected. For the Small Craft Advisory, winds to 30 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, from midnight tonight to 9 AM CST Saturday. For the Small Craft Advisory, from 9 AM Saturday to noon CST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 03:16:42 121 WHUS73 KLOT 200916 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 AM CST Sat Dec 20 2025 LMZ740>743-201730- /O.CON.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.251220T1500Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 316 AM CST Sat Dec 20 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 AM CST SUNDAY... * WHAT...For the Gale Warning, south gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the Small Craft Advisory, west winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. A few gale force gusts possible tonight. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Gale Warning, until 9 AM CST this morning. For the Small Craft Advisory, from 9 AM this morning to 4 AM CST Sunday. * 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. && $$ LMZ744-745-201730- /O.CON.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.251220T1500Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 316 AM CST Sat Dec 20 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO NOON CST SUNDAY... * WHAT...For the Gale Warning, south gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the Small Craft Advisory, west winds to 30 kt and significant waves to 8 ft occasionally to 10 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, until 9 AM CST this morning. For the Small Craft Advisory, from 9 AM this morning to noon CST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 03:16:42 121 WHUS73 KLOT 200916 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 316 AM CST Sat Dec 20 2025 LMZ740>743-201730- /O.CON.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.251220T1500Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 316 AM CST Sat Dec 20 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 4 AM CST SUNDAY... * WHAT...For the Gale Warning, south gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the Small Craft Advisory, west winds to 30 kt and significant waves to 6 ft occasionally to 8 ft expected. A few gale force gusts possible tonight. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...For the Gale Warning, until 9 AM CST this morning. For the Small Craft Advisory, from 9 AM this morning to 4 AM CST Sunday. * 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. && $$ LMZ744-745-201730- /O.CON.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.251220T1500Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 316 AM CST Sat Dec 20 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO NOON CST SUNDAY... * WHAT...For the Gale Warning, south gales to 35 kt and significant waves to 6 ft occasionally to 8 ft expected. For the Small Craft Advisory, west winds to 30 kt and significant waves to 8 ft occasionally to 10 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...For the Gale Warning, until 9 AM CST this morning. For the Small Craft Advisory, from 9 AM this morning to noon CST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 09:15:15 298 WHUS73 KLOT 201514 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 914 AM CST Sat Dec 20 2025 LMZ740>743-202315- /O.EXP.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 914 AM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST SUNDAY... * WHAT...Southwest winds to 30 kt becoming west to 25 kt this afternoon then to 30 kt this evening. Occasional gale gusts to 35 kt this morning and again this evening. Significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-202315- /O.EXP.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 914 AM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY... * WHAT...Southwest winds to 30 kt becoming west to 25 kt this afternoon then to 30 kt this evening. Occasional gale gusts to 35 kt this morning. Significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 09:15:15 298 WHUS73 KLOT 201514 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 914 AM CST Sat Dec 20 2025 LMZ740>743-202315- /O.EXP.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 914 AM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST SUNDAY... * WHAT...Southwest winds to 30 kt becoming west to 25 kt this afternoon then to 30 kt this evening. Occasional gale gusts to 35 kt this morning and again this evening. Significant waves to 6 ft occasionally to 8 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-202315- /O.EXP.KLOT.GL.W.0033.000000T0000Z-251220T1500Z/ /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 914 AM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY... * WHAT...Southwest winds to 30 kt becoming west to 25 kt this afternoon then to 30 kt this evening. Occasional gale gusts to 35 kt this morning. Significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 14:37:54 009 WHUS73 KLOT 202037 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 237 PM CST Sat Dec 20 2025 LMZ740>743-210445- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 237 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST SUNDAY... * WHAT...West winds to 30 kt becoming northwest this evening. Occasional gale gusts to 35 kt this evening. Significant waves to 5 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-210445- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 237 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY... * WHAT...West winds to 30 kt becoming northwest this evening. Occasional gale gusts to 35 kt this evening. Significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 14:37:54 009 WHUS73 KLOT 202037 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 237 PM CST Sat Dec 20 2025 LMZ740>743-210445- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 237 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST SUNDAY... * WHAT...West winds to 30 kt becoming northwest this evening. Occasional gale gusts to 35 kt this evening. Significant waves to 5 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-210445- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 237 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY... * WHAT...West winds to 30 kt becoming northwest this evening. Occasional gale gusts to 35 kt this evening. Significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 21:33:05 346 WHUS73 KLOT 210332 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 932 PM CST Sat Dec 20 2025 LMZ740>743-211000- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 932 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST SUNDAY... * WHAT...West winds to 30 kt this evening. Occasional gale gusts to 35 kt before midnight. Significant waves to 5 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-211145- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 932 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY... * WHAT...West winds to 30 kt this evening. Occasional gale gusts to 35 kt before midnight. Significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-20 21:33:05 346 WHUS73 KLOT 210332 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 932 PM CST Sat Dec 20 2025 LMZ740>743-211000- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 932 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST SUNDAY... * WHAT...West winds to 30 kt this evening. Occasional gale gusts to 35 kt before midnight. Significant waves to 5 ft. * WHERE...Winthrop Harbor to Calumet Harbor IL, and Calumet Harbor IL to Gary IN. * WHEN...Until 4 AM CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ744-745-211145- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 932 PM CST Sat Dec 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST SUNDAY... * WHAT...West winds to 30 kt this evening. Occasional gale gusts to 35 kt before midnight. Significant waves to 8 ft occasionally to 10 ft. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2025-12-21 03:56:04 281 WHUS73 KLOT 210955 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 355 AM CST Sun Dec 21 2025 LMZ740>743-211100- /O.EXP.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 355 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 AM CST EARLY THIS MORNING... Winds continue to subside as high pressure moves overhead. Therefore, the Small Craft Advisory will be allowed to expire. $$ LMZ744-745-211800- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 355 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Northwest winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST today. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-21 03:56:04 281 WHUS73 KLOT 210955 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 355 AM CST Sun Dec 21 2025 LMZ740>743-211100- /O.EXP.KLOT.SC.Y.0117.000000T0000Z-251221T1000Z/ Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 355 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 4 AM CST EARLY THIS MORNING... Winds continue to subside as high pressure moves overhead. Therefore, the Small Craft Advisory will be allowed to expire. $$ LMZ744-745-211800- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 355 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Northwest winds to 25 kt and significant waves to 7 ft occasionally to 9 ft expected. * WHERE...Gary to Michigan City IN. * WHEN...Until noon CST today. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Cancelled Issued At: 2025-12-21 10:01:48 543 WHUS73 KLOT 211601 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1001 AM CST Sun Dec 21 2025 LMZ744-211715- /O.CAN.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN- 1001 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY IS CANCELLED... Waves continue to subside thus the Small Craft Advisory has been cancelled west of Burns Harbor. $$ LMZ745-211800- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Burns Harbor to Michigan City IN- 1001 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Northwest winds 10 to 15 kt and significant waves to 6 ft. * WHERE...Burns Harbor to Michigan City IN. * WHEN...Until noon CST today. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2025-12-21 10:01:48 543 WHUS73 KLOT 211601 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1001 AM CST Sun Dec 21 2025 LMZ744-211715- /O.CAN.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Gary to Burns Harbor IN- 1001 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY IS CANCELLED... Waves continue to subside thus the Small Craft Advisory has been cancelled west of Burns Harbor. $$ LMZ745-211800- /O.CON.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Burns Harbor to Michigan City IN- 1001 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Northwest winds 10 to 15 kt and significant waves to 6 ft. * WHERE...Burns Harbor to Michigan City IN. * WHEN...Until noon CST today. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2025-12-21 12:00:07 510 WHUS73 KLOT 211759 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 1159 AM CST Sun Dec 21 2025 LMZ745-211900- /O.EXP.KLOT.SC.Y.0117.000000T0000Z-251221T1800Z/ Burns Harbor to Michigan City IN- 1159 AM CST Sun Dec 21 2025 ...SMALL CRAFT ADVISORY WILL EXPIRE AT NOON CST TODAY... Waves continue to gradually subside so the Small Craft Advisory will be allowed to expire. $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||