Marine Weather Message
Issued by NWS Marquette, MI
Issued by NWS Marquette, MI
409 WHUS73 KMQT 130341 MWWMQT URGENT - MARINE WEATHER MESSAGE National Weather Service Marquette MI 1041 PM EST Fri Dec 12 2025 LSZ242-243-131545- /O.CON.KMQT.GL.W.0060.000000T0000Z-251213T0600Z/ /O.CON.KMQT.UP.W.0018.000000T0000Z-251214T1200Z/ /O.NEW.KMQT.SC.Y.0200.251213T0600Z-251214T1200Z/ Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- 1041 PM EST Fri Dec 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST SATURDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...For the Gale Warning, northwest winds around 25 kt with gusts up to 35 kt and waves 8 to 10 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. For the Small Craft Advisory, northwest winds 15 to 25 kt with gusts up to 35 kt and waves 7 to 10 ft expected. * WHERE...Ontonagon to Upper Entrance of Portage Canal MI and Upper Entrance of Portage Canal to Eagle River MI. * WHEN...For the Gale Warning, until 1 AM EST Saturday. For the Heavy Freezing Spray Warning, until 7 AM EST Sunday. For the Small Craft Advisory, until 7 AM EST Sunday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. 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. && $$ LSZ244-264-131545- /O.CON.KMQT.GL.W.0060.000000T0000Z-251214T1200Z/ /O.CON.KMQT.UP.W.0018.000000T0000Z-251214T1200Z/ Eagle River to Manitou Island MI- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 1041 PM EST Fri Dec 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...For the Gale Warning, northwest winds 20 to 25 kt with gusts up to 35 kt and waves 7 to 10 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Eagle River to Manitou Island MI and Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border. * WHEN...Until 7 AM EST Sunday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ263-131545- /O.CON.KMQT.GL.W.0060.000000T0000Z-251213T0600Z/ /O.CON.KMQT.UP.W.0018.000000T0000Z-251214T1200Z/ Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- 1041 PM EST Fri Dec 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST SATURDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...For the Gale Warning, northwest winds 20 to 25 kt with gusts up to 35 kt and waves 6 to 9 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park. * WHEN...For the Gale Warning, until 1 AM EST Saturday. For the Heavy Freezing Spray Warning, until 7 AM EST Sunday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. 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. && $$ LSZ245-248>251-265>267-131545- /O.CON.KMQT.GL.W.0060.000000T0000Z-251214T1200Z/ /O.CON.KMQT.UP.W.0018.251213T0600Z-251214T1200Z/ Manitou Island to Point Isabelle MI-Huron Islands to Marquette MI- Marquette to Munising MI-Munising to Grand Marais MI- Grand Marais to Whitefish Point MI- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 1041 PM EST Fri Dec 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...For the Gale Warning, northwest winds 20 to 30 kt with gusts up to 40 kt and waves 8 to 13 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Portions of Central and Eastern Lake Superior. * WHEN...Until 7 AM EST Sunday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LSZ246-131545- /O.CON.KMQT.GL.W.0060.000000T0000Z-251214T1200Z/ Point Isabelle to Lower Entrance of Portage Canal MI- 1041 PM EST Fri Dec 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and waves up to 3 ft occurring. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI. * WHEN...Until 7 AM EST 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. && $$ LSZ240-241-131545- /O.CON.KMQT.UP.W.0018.000000T0000Z-251214T1200Z/ /O.CON.KMQT.SC.Y.0199.000000T0000Z-251214T1200Z/ Saxon Harbor WI to Black River MI-Black River to Ontonagon MI- 1041 PM EST Fri Dec 12 2025 /941 PM CST Fri Dec 12 2025/ ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 AM EST /6 AM CST/ SUNDAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST /6 AM CST/ SUNDAY... * WHAT...For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. For the Small Craft Advisory, northwest winds 15 to 25 kt with gusts up to 35 kt and waves 7 to 10 ft occurring. * WHERE...Saxon Harbor WI to Black River MI and Black River to Ontonagon MI. * WHEN...Until 7 AM EST /6 AM CST/ Sunday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ162-131545- /O.CON.KMQT.UP.W.0018.000000T0000Z-251214T0600Z/ Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM- 1041 PM EST Fri Dec 12 2025 /941 PM CST Fri Dec 12 2025/ ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 1 AM EST /MIDNIGHT CST/ SUNDAY... * WHAT...Heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM. * WHEN...Until 1 AM EST /midnight CST/ Sunday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. && $$ LMZ248-131545- /O.EXT.KMQT.SC.Y.0199.000000T0000Z-251214T1200Z/ Seul Choix Point to Point Detour MI- 1041 PM EST Fri Dec 12 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...Northwest winds 15 to 20 kt with gusts up to 25 kt and waves 1 to 3 ft occurring. * WHERE...Seul Choix Point to Point Detour MI. * WHEN...Until 7 AM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ250-131545- /O.CON.KMQT.SC.Y.0199.000000T0000Z-251214T1200Z/ 5NM East of a line from Fairport MI to Rock Island Passage- 1041 PM EST Fri Dec 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...Northwest winds 20 to 25 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. * WHERE...5NM East of a line from Fairport MI to Rock Island Passage. * WHEN...Until 7 AM EST 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. && $$ LMZ221-131545- /O.CON.KMQT.SC.Y.0199.000000T0000Z-251214T1200Z/ Green Bay North of line from Cedar River MI to Rock Island Passage- 1041 PM EST Fri Dec 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and waves 1 to 4 ft occurring. * WHERE...Green Bay North of line from Cedar River MI to Rock Island Passage. * WHEN...Until 7 AM EST Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ247-131545- /O.CON.KMQT.SC.Y.0199.000000T0000Z-251214T1200Z/ Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 1041 PM EST Fri Dec 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST SUNDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. * WHERE...Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...Until 7 AM EST 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. && $$