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454 WHUS73 KMQT 211339 MWWMQT URGENT - MARINE WEATHER MESSAGE National Weather Service Marquette MI 939 AM EDT Fri Mar 21 2025 LSZ245-248-212145- /O.CON.KMQT.SC.Y.0061.000000T0000Z-250321T1500Z/ /O.CON.KMQT.SC.Y.0062.250321T2200Z-250322T1800Z/ /O.CON.KMQT.UP.W.0016.250322T0300Z-250322T1500Z/ Manitou Island to Point Isabelle MI-Huron Islands to Marquette MI- 939 AM EDT Fri Mar 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 2 PM EDT SATURDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM EDT SATURDAY... * WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 30 kt and waves 1 to 3 ft occurring. For the second Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and waves 6 to 11 ft expected. 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...Manitou Island to Point Isabelle MI and Huron Islands to Marquette MI. * WHEN...For the first Small Craft Advisory, until 11 AM EDT this morning. For the second Small Craft Advisory, from 6 PM this evening to 2 PM EDT Saturday. For the Heavy Freezing Spray Warning, from 11 PM this evening to 11 AM EDT Saturday. * 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. && $$ LSZ249>251-212145- /O.CON.KMQT.SC.Y.0061.000000T0000Z-250321T1800Z/ /O.CON.KMQT.SC.Y.0062.250321T2200Z-250322T2300Z/ /O.CON.KMQT.UP.W.0016.250322T0300Z-250322T1500Z/ Marquette to Munising MI-Munising to Grand Marais MI- Grand Marais to Whitefish Point MI- 939 AM EDT Fri Mar 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 7 PM EDT SATURDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM EDT SATURDAY... * WHAT...For the first Small Craft Advisory, southwest winds 15 to 25 kt with gusts up to 35 kt and waves 1 to 4 ft occurring. For the second Small Craft Advisory, north winds 20 to 30 kt with gusts up to 35 kt and waves 8 to 13 ft expected. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Marquette to Munising MI, Munising to Grand Marais MI and Grand Marais to Whitefish Point MI. * WHEN...For the first Small Craft Advisory, until 2 PM EDT this afternoon. For the second Small Craft Advisory, from 6 PM this evening to 7 PM EDT Saturday. For the Heavy Freezing Spray Warning, from 11 PM this evening to 11 AM EDT Saturday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ241-242-212145- /O.CON.KMQT.SC.Y.0061.000000T0000Z-250322T1500Z/ /O.CON.KMQT.UP.W.0016.250322T0300Z-250322T1200Z/ Black River to Ontonagon MI- Ontonagon to Upper Entrance of Portage Canal MI- 939 AM EDT Fri Mar 21 2025 /839 AM CDT Fri Mar 21 2025/ ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT /10 AM CDT/ SATURDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 11 PM EDT /10 PM CDT/ THIS EVENING TO 8 AM EDT /7 AM CDT/ SATURDAY... * WHAT...For the Small Craft Advisory, northwest winds 15 to 25 kt with gusts up to 30 kt and waves 5 to 8 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...Black River to Ontonagon MI and Ontonagon to Upper Entrance of Portage Canal MI. * WHEN...For the Small Craft Advisory, until 11 AM EDT /10 AM CDT/ Saturday. For the Heavy Freezing Spray Warning, from 11 PM EDT /10 PM CDT/ this evening to 8 AM EDT /7 AM CDT/ Saturday. * 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. && $$ LSZ243-244-212145- /O.CON.KMQT.SC.Y.0061.000000T0000Z-250322T1500Z/ /O.CON.KMQT.UP.W.0016.250322T0200Z-250322T1300Z/ Upper Entrance of Portage Canal to Eagle River MI- Eagle River to Manitou Island MI- 939 AM EDT Fri Mar 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT SATURDAY... ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 9 AM EDT SATURDAY... * WHAT...For the Small Craft Advisory, northwest winds 20 to 30 kt with a few gusts up to 35 kt and waves 6 to 11 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Upper Entrance of Portage Canal to Eagle River MI and Eagle River to Manitou Island MI. * WHEN...For the Small Craft Advisory, until 11 AM EDT Saturday. For the Heavy Freezing Spray Warning, from 10 PM this evening to 9 AM EDT Saturday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ263-212145- /O.CON.KMQT.UP.W.0016.250322T0300Z-250322T1200Z/ 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- 939 AM EDT Fri Mar 21 2025 ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT SATURDAY... * WHAT...Heavy freezing spray at a rate of 2 cm per hour or greater expected, 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...From 11 PM this evening to 8 AM EDT Saturday. * 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. && $$ LSZ264-212145- /O.CON.KMQT.UP.W.0016.250322T0200Z-250322T1300Z/ Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- 939 AM EDT Fri Mar 21 2025 ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 9 AM EDT SATURDAY... * WHAT...Heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border. * WHEN...From 10 PM this evening to 9 AM EDT Saturday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should prepare for dangerous accumulation of ice on their vessel. If possible, remain in port, avoid the warning area or conduct mitigation. && $$ LSZ265>267-212145- /O.CON.KMQT.UP.W.0016.250322T0300Z-250322T1500Z/ 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- 939 AM EDT Fri Mar 21 2025 ...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 11 AM EDT SATURDAY... * WHAT...Heavy freezing spray at a rate of 2 cm per hour or greater expected, and may rapidly accumulate on vessels. * WHERE...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 and Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border. * WHEN...From 11 PM this evening to 11 AM EDT Saturday. * 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. && $$ LSZ246-247-212145- /O.CON.KMQT.SC.Y.0061.000000T0000Z-250321T1500Z/ /O.CON.KMQT.SC.Y.0062.250321T2200Z-250322T1800Z/ Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 939 AM EDT Fri Mar 21 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 2 PM EDT SATURDAY... * WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 20 kt and waves 1 to 2 ft occurring. For the second Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and waves 1 to 4 ft expected. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the first Small Craft Advisory, until 11 AM EDT this morning. For the second Small Craft Advisory, from 6 PM this evening to 2 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ221-248-250-LSZ240-212145- /O.CON.KMQT.SC.Y.0061.000000T0000Z-250322T1500Z/ Green Bay North of line from Cedar River MI to Rock Island Passage-Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- Saxon Harbor WI to Black River MI- 939 AM EDT Fri Mar 21 2025 /839 AM CDT Fri Mar 21 2025/ ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT /10 AM CDT/ SATURDAY... * WHAT...Northwest winds 15 to 25 kt with a few gusts up to 35 kt and waves 3 to 6 ft occurring. * WHERE...In Lake Michigan, Green Bay North of line from Cedar River MI to Rock Island Passage, Seul Choix Point to Point Detour MI and 5NM East of a line from Fairport MI to Rock Island Passage. In Lake Superior, Saxon Harbor WI to Black River MI. * WHEN...Until 11 AM EDT /10 AM CDT/ 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. && $$