Marine Weather Message
Issued by NWS Marquette, MI

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176
WHUS73 KMQT 032045
MWWMQT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
345 PM EST Wed Dec 3 2025

LSZ241-040845-
/O.EXP.KMQT.SC.Y.0191.000000T0000Z-251203T2100Z/
/O.CON.KMQT.GL.W.0057.251203T2100Z-251204T0600Z/
/O.NEW.KMQT.GL.A.0035.251204T2100Z-251205T0900Z/
Black River to Ontonagon MI-
345 PM EST Wed Dec 3 2025 /245 PM CST Wed Dec 3 2025/

...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST /MIDNIGHT CST/
THURSDAY...
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

* WHAT...For the Gale Warning, northwest winds 25 to 30 kt with
  gusts up to 35 kt and waves 7 to 9 ft occurring. For the Gale
  Watch, southwest winds 15 to 25 kt with gusts up to 30 kt and
  waves 3 to 6 ft possible.

* WHERE...Black River to Ontonagon MI.

* WHEN...For the Gale Warning, until 1 AM EST /midnight CST/
  Thursday. For the Gale Watch, from Thursday afternoon through
  late Thursday night.

* 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.

&&

$$

LSZ242-040845-
/O.EXP.KMQT.SC.Y.0189.000000T0000Z-251203T2100Z/
/O.CON.KMQT.GL.W.0057.251203T2100Z-251204T0600Z/
/O.NEW.KMQT.GL.A.0035.251204T2100Z-251205T0900Z/
Ontonagon to Upper Entrance of Portage Canal MI-
345 PM EST Wed Dec 3 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

* WHAT...For the Gale Warning, northwest winds 25 to 30 kt with
  gusts up to 35 kt and waves 7 to 10 ft occurring. For the Gale
  Watch, southwest winds 15 to 25 kt with gusts up to 35 kt and
  waves 5 to 8 ft possible.

* WHERE...Ontonagon to Upper Entrance of Portage Canal MI.

* WHEN...For the Gale Warning, until 1 AM EST Thursday. For the
  Gale Watch, from Thursday afternoon through late Thursday
  night.

* 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.

&&

$$

LMZ221-248-250-040845-
/O.CON.KMQT.SC.Y.0191.000000T0000Z-251204T1200Z/
/O.UPG.KMQT.GL.A.0034.251205T0300Z-251205T1200Z/
/O.NEW.KMQT.GL.W.0058.251205T0300Z-251205T1200Z/
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-
345 PM EST Wed Dec 3 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
THURSDAY...
...GALE WARNING IN EFFECT FROM 10 PM THURSDAY TO 7 AM EST
FRIDAY...

* WHAT...For the Small Craft Advisory, northwest winds 15 to 25
  kt with gusts up to 30 kt and waves 1 to 4 ft occurring. For
  the Gale Warning, southwest winds 20 to 30 kt with gusts up to
  35 kt and waves 5 to 8 ft expected.

* WHERE...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.

* WHEN...For the Small Craft Advisory, until 7 AM EST Thursday.
  For the Gale Warning, from 10 PM Thursday to 7 AM EST Friday.

* 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.

&&

$$

LSZ244-264-266-040845-
/O.EXT.KMQT.UP.W.0017.251203T2045Z-251204T1200Z/
/O.CON.KMQT.GL.W.0057.000000T0000Z-251204T1200Z/
/O.NEW.KMQT.GL.A.0035.251205T0000Z-251205T1200Z/
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-
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-
345 PM EST Wed Dec 3 2025

...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 7 AM EST
THURSDAY...
...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY
MORNING...

* 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 Gale Warning, northwest
  winds 25 to 30 kt with gusts up to 40 kt and waves 8 to 13 ft
  occurring. For the Gale Watch, southwest winds 20 to 30 kt
  with gusts up to 40 kt and waves 6 to 11 ft possible.

* WHERE...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 and 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.

* WHEN...For the Heavy Freezing Spray Warning, until 7 AM EST
  Thursday. For the Gale Watch, from Thursday evening through
  Friday morning.

* 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.

&&

$$

LSZ263-040845-
/O.EXT.KMQT.UP.W.0017.251203T2045Z-251204T1200Z/
/O.CON.KMQT.GL.W.0057.251203T2100Z-251204T0600Z/
/O.NEW.KMQT.GL.A.0035.251204T2100Z-251205T0900Z/
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-
345 PM EST Wed Dec 3 2025

...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 7 AM EST
THURSDAY...
...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

* 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 Gale Warning, northwest
  winds 25 to 30 kt with gusts up to 35 kt and waves 6 to 9 ft
  expected. For the Gale Watch, southwest winds 20 to 30 kt with
  gusts up to 40 kt and waves 6 to 11 ft possible.

* 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 Heavy Freezing Spray Warning, until 7 AM EST
  Thursday. For the Gale Warning, until 1 AM EST Thursday. For
  the Gale Watch, from Thursday afternoon through late Thursday
  night.

* 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.

&&

$$

LSZ243-245>251-265-267-040845-
/O.CON.KMQT.GL.W.0057.000000T0000Z-251204T1200Z/
/O.NEW.KMQT.GL.A.0035.251205T0000Z-251205T1200Z/
Upper Entrance of Portage Canal to Eagle River 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-
Grand Marais to Whitefish Point MI-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
345 PM EST Wed Dec 3 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY
MORNING...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with
  gusts up to 35 kt and waves 8 to 13 ft occurring. For the Gale
  Watch, southwest winds 20 to 30 kt with gusts up to 40 kt and
  waves 5 to 8 ft possible.

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

* WHEN...For the Gale Warning, until 7 AM EST Thursday. For the
  Gale Watch, from Thursday evening through Friday morning.

* 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.

&&

$$

LSZ240-040845-
/O.CON.KMQT.SC.Y.0191.000000T0000Z-251204T1200Z/
Saxon Harbor WI to Black River MI-
345 PM EST Wed Dec 3 2025 /245 PM CST Wed Dec 3 2025/

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST /6 AM
CST/ THURSDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and
  waves 4 to 7 ft occurring.

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

* WHEN...Until 7 AM EST /6 AM CST/ Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LSZ162-040845-
/O.NEW.KMQT.GL.A.0035.251204T2100Z-251205T0900Z/
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
345 PM EST Wed Dec 3 2025 /245 PM CST Wed Dec 3 2025/

...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

* WHAT...Southwest winds 20 to 30 kt with gusts up to 40 kt and
  waves 6 to 9 ft possible.

* WHERE...Lake Superior west of a line from Saxon Harbor WI to
  Grand Portage MN beyond 5NM.

* WHEN...From Thursday afternoon through late Thursday night.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$