WHUS73 KMQT 210219 MWWMQT URGENT - MARINE WEATHER MESSAGE National Weather Service Marquette MI 1019 PM EDT Mon Apr 20 2026 LSZ266-267-210800- /O.CON.KMQT.GL.W.0034.000000T0000Z-260421T0800Z/ 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- 1019 PM EDT Mon Apr 20 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 AM EDT TUESDAY... * WHAT...South winds 20 to 25 kt with gusts up to 35 kt and waves 4 to 7 ft occurring. * WHERE...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...Until 4 AM EDT Tuesday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ LMZ221-210900- /O.CON.KMQT.SC.Y.0072.000000T0000Z-260421T0900Z/ Green Bay North of line from Cedar River MI to Rock Island Passage- 1019 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT TUESDAY... * WHAT...South winds 15 to 25 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. * WHERE...Green Bay North of line from Cedar River MI to Rock Island Passage. * WHEN...Until 5 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ242>245-210800- /O.CON.KMQT.SC.Y.0072.260421T0300Z-260421T0800Z/ Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- Eagle River to Manitou Island MI- Manitou Island to Point Isabelle MI- 1019 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT TUESDAY... * WHAT...Southwest winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 3 ft expected. * WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Upper Entrance of Portage Canal to Eagle River MI, Eagle River to Manitou Island MI and Manitou Island to Point Isabelle MI. * WHEN...Until 4 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ246-247-210700- /O.CON.KMQT.SC.Y.0072.260421T0400Z-260421T0700Z/ Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 1019 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM EDT TUESDAY... * WHAT...Southwest winds 10 to 15 kt with gusts up to 25 kt and waves 1 to 3 ft expected. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...Until 3 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ248-210900- /O.CON.KMQT.SC.Y.0072.000000T0000Z-260421T0900Z/ Huron Islands to Marquette MI- 1019 PMEDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT TUESDAY... * WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and waves 1 to 3 ft occurring. * WHERE...Huron Islands to Marquette MI. * WHEN...Until 5 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ249-250-211000- /O.CON.KMQT.SC.Y.0072.000000T0000Z-260421T1000Z/ Marquette to Munising MI-Munising to Grand Marais MI- 1019 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT TUESDAY... * WHAT...South winds 15 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft occurring. * WHERE...Marquette to Munising MI and Munising to Grand Marais MI. * WHEN...Until 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LSZ251-211100- /O.CON.KMQT.SC.Y.0072.000000T0000Z-260421T1100Z/ Grand Marais to Whitefish Point MI- 1019 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT TUESDAY... * WHAT...South winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 3 ft occurring. * WHERE...Grand Marais to Whitefish Point MI. * WHEN...Until 7 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ LMZ248-250-211430- /O.CON.KMQT.SC.Y.0072.000000T0000Z-260421T1800Z/ Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 1019 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT TUESDAY... * WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and waves 4 to 7 ft occurring. * WHERE...Seul Choix Point to Point Detour MI and 5NM East of a line from Fairport MI to Rock Island Passage. * WHEN...Until 2 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$