Marine Weather Message
Issued by NWS Marquette, MI

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416
WHUS73 KMQT 051851
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
251 PM EDT Sun Oct 5 2025

LSZ241-060700-
/O.UPG.KMQT.SC.Y.0154.000000T0000Z-251006T1200Z/
/O.EXB.KMQT.GL.W.0042.000000T0000Z-251006T0900Z/
Black River to Ontonagon MI-
251 PM EDT Sun Oct 5 2025 /151 PM CDT Sun Oct 5 2025/

...GALE WARNING IN EFFECT UNTIL 5 AM EDT /4 AM CDT/ MONDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 35 kt and
  waves 3 to 6 ft occurring.

* WHERE...Black River to Ontonagon MI.

* WHEN...Until 5 AM EDT /4 AM CDT/ Monday.

* 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.

&&

$$

LSZ162-242-263-060700-
/O.EXT.KMQT.GL.W.0042.000000T0000Z-251006T0900Z/
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
Ontonagon to Upper Entrance of Portage Canal MI-
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-
251 PM EDT Sun Oct 5 2025 /151 PM CDT Sun Oct 5 2025/

...GALE WARNING NOW IN EFFECT UNTIL 5 AM EDT /4 AM CDT/ MONDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 40 kt and
  waves 5 to 8 ft occurring.

* WHERE...Lake Superior west of a line from Saxon Harbor WI to
  Grand Portage MN beyond 5NM, Ontonagon to Upper Entrance of
  Portage Canal MI and 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...Until 5 AM EDT /4 AM CDT/ Monday.

* 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.

&&

$$

LSZ243>250-264>266-060600-
/O.CON.KMQT.GL.W.0042.000000T0000Z-251006T0600Z/
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
Marquette to Munising MI-Munising to Grand Marais MI-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
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-
251 PM EDT Sun Oct 5 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY...

* WHAT...South winds 20 to 25 kt with gusts up to 40 kt and
  waves 5 to 8 ft occurring.

* WHERE...Portions of Central, Eastern and Western Lake Superior.

* WHEN...Until 2 AM EDT Monday.

* 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.

&&

$$

LMZ221-060700-
/O.EXT.KMQT.SC.Y.0154.000000T0000Z-251006T0900Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-
251 PM EDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 5 AM EDT MONDAY...

* WHAT...South winds 10 to 20 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 Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ240-060700-
/O.CON.KMQT.SC.Y.0154.000000T0000Z-251006T0900Z/
Saxon Harbor WI to Black River MI-
251 PM EDT Sun Oct 5 2025 /151 PM CDT Sun Oct 5 2025/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT /4 AM
CDT/ MONDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and
  waves 2 to 5 ft occurring.

* WHERE...Saxon Harbor WI to Black River MI.

* WHEN...Until 5 AM EDT /4 AM CDT/ Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ251-060700-
/O.CON.KMQT.SC.Y.0154.000000T0000Z-251007T0000Z/
Grand Marais to Whitefish Point MI-
251 PM EDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT MONDAY...

* WHAT...West winds 15 to 25 kt with gusts up to 35 kt and waves
  3 to 6 ft occurring.

* WHERE...Grand Marais to Whitefish Point MI.

* WHEN...Until 8 PM EDT Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LMZ248-250-060700-
/O.CON.KMQT.SC.Y.0154.000000T0000Z-251006T1500Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
251 PM EDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
MONDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and
  waves 5 to 8 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 11 AM EDT Monday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$