Heavy Freezing Spray Warning

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1058 AM EST Wed Dec 3 2025

LSZ244-264-266-040400-
/O.CON.KMQT.GL.W.0057.000000T0000Z-251204T1200Z/
/O.CON.KMQT.UP.W.0017.251204T0000Z-251204T1200Z/
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-
1058 AM EST Wed Dec 3 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 7 AM EST THURSDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM EST THURSDAY...

* WHAT...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
  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...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 Gale Warning, until 7 AM EST Thursday. For the
  Heavy Freezing Spray Warning, from 7 PM this evening to 7 AM
  EST Thursday.

* 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.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
1058 AM EST Wed Dec 3 2025

LSZ263-040400-
/O.CON.KMQT.GL.W.0057.251203T2100Z-251204T0600Z/
/O.CON.KMQT.UP.W.0017.251204T0000Z-251204T1200Z/
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-
1058 AM EST Wed Dec 3 2025

...GALE WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO
1 AM EST THURSDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 7 AM EST THURSDAY...

* WHAT...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 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...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, from 4 PM this afternoon to 1 AM
  EST Thursday. For the Heavy Freezing Spray Warning, from 7 PM
  this evening to 7 AM EST Thursday.

* 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.

&&

$$