fzus63 kdtx 102034
glflh 
expires:202512110445;;352627

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm est wed dec 10 2025

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...low pressure, 29.20 inches, has passed to the east and is now 
located over lake ontario. a period of gales will continue into this 
evening behind the exiting system. high pressure, 30.10 inches, will 
then slide into the region thursday into friday.


lhz361-362-110445-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
334 pm est wed dec 10 2025

.tonight...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots in the late evening and early morning...then increasing
to 20 to 25 knots early in the morning. a chance of snow. waves
8 to 12 feet. waves occasionally around 15 feet. 
.thursday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.thursday night...northwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. waves 4 to
6 feet. 
.friday...west winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late morning and afternoon. waves
occasionally around 8 feet. 
.friday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots after midnight. snow showers likely. waves 2 to
4 feet building to 4 to 6 feet in the late evening and overnight.
waves occasionally around 8 feet. 
.saturday...west winds 20 to 25 knots. a chance of snow showers.
waves 8 to 12 feet. waves occasionally around 15 feet. 
.sunday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and early morning. a chance of snow
showers early in the morning. freezing spray early in the
morning. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...west winds 10 to 15 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then
increasing to 20 to 25 knots early in the evening becoming west
15 to 20 knots in the late evening and early morning. a chance of
snow showers. waves 3 to 5 feet building to 6 to 9 feet. waves
occasionally around 12 feet. 


$$

fzus63 kdtx 102034
glflh 
expires:202512110445;;352628

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 pm est wed dec 10 2025

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...low pressure, 29.20 inches, has passed to the east and is now 
located over lake ontario. a period of gales will continue into this 
evening behind the exiting system. high pressure, 30.10 inches, will 
then slide into the region thursday into friday.


lhz363-462>464-110445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
334 pm est wed dec 10 2025

...gale warning in effect until 3 am est thursday...

.tonight...northwest winds to 30 knots decreasing to 20 to
25 knots in the late evening and early morning...then increasing
to 30 knots early in the morning. gusts to 35 knot gales. a
chance of snow. waves 10 to 14 feet. waves occasionally around
18 feet. 
.thursday...northwest winds to 30 knots becoming west 20 to
25 knots with gusts to around 30 knots in the late morning and
afternoon. waves 8 to 12 feet. waves occasionally around 15 feet.
.thursday night...west winds 15 to 20 knots decreasing to 10 to
15 knots after midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.friday...west winds 10 to 15 knots. waves 3 to 5 feet subsiding
to 1 to 3 feet in the late morning and afternoon. 
.friday night...southwest winds 10 to 15 knots increasing to
20 to 25 knots. snow showers likely in the evening...then a
chance of snow showers after midnight. waves 3 to 5 feet building
to 6 to 9 feet after midnight. waves occasionally around 12 feet.
.saturday...west winds 20 to 25 knots. gusts to 30 knots. a
chance of snow showers. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.sunday...northwest winds 20 to 25 knots decreasing to 10 to
15 knots in the late evening and early morning. a chance of snow
showers early in the morning. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.monday...west winds 15 to 20 knots becoming southwest 20 to
25 knots with gusts to around 30 knots. a chance of snow showers.
waves 6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kmkx 102019
glflm 
expires:202512110430;;352225

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
219 pm cst wed dec 10 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

north to northwest gales will linger until early this evening
across the southern two thirds of lake michigan. these winds will
gradually diminish tonight into thursday, as high pressure around
30.1 inches moves in from the northwest. 

a period of west to northwest gales may return friday night into 
saturday night, as a strong arctic cold front moves through the 
region. heavy freezing spray may also develop during this period, 
as the colder airmass moves in. 

strong high pressure around 30.8 inches will then move southeast 
through the region sunday and to the south early next week. gusty 
winds may return early next week.


lmz261-362-364-563-110430-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
219 pm cst wed dec 10 2025

sturgeon bay wi to point betsie mi north...

.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
chance of snow. waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 7 ft occasionally to 9 ft. 
.thursday...northwest winds to 30 kt diminishing to 10 to 20 kt.
slight chance of snow in the morning. waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft. 
.thursday night...northwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft subsiding to 1 ft or less. 
.friday...west winds 10 to 15 kt becoming southwest 10 to 20 kt.
chance of snow in the afternoon. waves 1 ft or less building to
2 to 4 ft. 
.friday night...west winds to 30 kt becoming northwest. snow
likely in the evening, then chance of snow overnight. freezing
spray overnight. waves 4 to 7 ft occasionally to 9 ft building to
5 to 8 ft occasionally to 10 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.saturday night...northwest gales to 35 kt. freezing spray.
chance of snow. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...north winds to 30 kt becoming northwest 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.monday...southwest gales to 35 kt. freezing spray. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 102019
glflm 
expires:202512110430;;352226

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
219 pm cst wed dec 10 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

north to northwest gales will linger until early this evening
across the southern two thirds of lake michigan. these winds will
gradually diminish tonight into thursday, as high pressure around
30.1 inches moves in from the northwest. 

a period of west to northwest gales may return friday night into 
saturday night, as a strong arctic cold front moves through the 
region. heavy freezing spray may also develop during this period, 
as the colder airmass moves in. 

strong high pressure around 30.8 inches will then move southeast 
through the region sunday and to the south early next week. gusty 
winds may return early next week.


lmz366-565-567-868-110430-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
219 pm cst wed dec 10 2025

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 6 pm cst this evening...

.tonight...north to northwest gales to 35 kt early, becoming
northwest winds to 30 kt diminishing to 15 to 25 kt. slight 
chance of snow this evening, then scattered flurries overnight. 
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft 
occasionally to 9 ft.
.thursday...northwest winds 10 to 20 kt becoming west. slight
chance of snow in the morning. waves 4 to 6 ft occasionally to
8 ft subsiding to 2 to 4 ft. 
.thursday night...west winds 5 to 10 kt. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.friday...west winds 10 to 15 kt increasing to 10 to 20 kt.
chance of snow in the afternoon. waves 1 to 2 ft building to 2 to
4 ft. 
.friday night...west winds to 30 kt. freezing spray. chance of
snow. waves 6 to 9 ft occasionally to 12 ft building to 8 to
12 ft occasionally to 16 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.saturday night...northwest winds to 30 kt. freezing spray.
chance of snow. waves 8 to 11 ft occasionally to 14 ft. 
.sunday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. waves 8 to 11 ft occasionally to 14 ft subsiding
to 5 to 8 ft occasionally to 10 ft. 
.monday...southwest winds to 30 kt. freezing spray. waves 10 to
14 ft occasionally to 18 ft.  

$$

fzus63 kmkx 102019
glflm 
expires:202512110430;;352227

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
219 pm cst wed dec 10 2025

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

north to northwest gales will linger until early this evening
across the southern two thirds of lake michigan. these winds will
gradually diminish tonight into thursday, as high pressure around
30.1 inches moves in from the northwest. 

a period of west to northwest gales may return friday night into 
saturday night, as a strong arctic cold front moves through the 
region. heavy freezing spray may also develop during this period, 
as the colder airmass moves in. 

strong high pressure around 30.8 inches will then move southeast 
through the region sunday and to the south early next week. gusty 
winds may return early next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-110430-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
219 pm cst wed dec 10 2025

sheboygan wi to pentwater mi south...

...gale warning in effect until 6 pm cst this evening...

.tonight...north to northwest gales to 35 kt early, becoming west
winds to 30 kt diminishing to 15 to 25 kt. slight chance of snow 
this evening, then scattered flurries overnight. waves 10 to 14 ft
occasionally to 18 ft subsiding to 6 to 9 ft occasionally to 12 
ft. 
.thursday...northwest winds 10 to 20 kt becoming west. scattered
flurries in the morning. waves 4 to 7 ft occasionally to 9 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.thursday night...southwest winds 5 to 10 kt backing to east.
chance of snow. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...southwest winds 10 to 15 kt becoming west 15 to 25 kt
in the afternoon. chance of snow in the afternoon. waves 1 to
2 ft building to 3 to 5 ft. 
.friday night...west winds to 30 kt. freezing spray. chance of
snow. waves 7 to 10 ft occasionally to 13 ft building to 10 to
14 ft occasionally to 18 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 10 to 14 ft occasionally to 18 ft. 
.saturday night...northwest winds to 30 kt. freezing spray.
chance of snow. waves 10 to 14 ft occasionally to 18 ft. 
.sunday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. waves 10 to 14 ft occasionally to 18 ft subsiding
to 8 to 11 ft occasionally to 14 ft. 
.monday...southwest gales to 40 kt. freezing spray. waves 12 to
16 ft occasionally to 21 ft.  

$$

fzus63 kmqt 102137
glfls 
expires:202512110900;;356636

open lake forecast for lake superior
national weather service marquette mi
437 pm est wed dec 10 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

troughing continues to gradually weaken to 29.8 inches over lake 
superior this evening as a 29.2 inch low over lake ontario tracks to 
southern quebec at 29.1 inches by tonight. this will allow 30.2 inch 
high pressure to rebuild over the northern plains while extending 
weak ridging over lake superior through thursday. ridging breaks 
down temporarily on friday as a 29.8 inch trough drops over the lake 
from northern ontario, but ridging quickly rebuilds as 30.7 inch 
high pressure over the northern plains extends back into the great 
lakes this weekend.



lsz162-110900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
437 pm est wed dec 10 2025 /337 pm cst wed dec 10 2025/

.late this afternoon...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. waves subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering west by
midnight. a slight chance of snow showers after midnight. waves
calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon. snow showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. a chance of snow showers. waves building
to 3 to 6 feet occasionally to 8 feet. 
.saturday...northwest winds 20 to 30 knots. waves subsiding to
2 to 4 feet. 
.saturday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...northwest winds 10 to 20 knots becoming southwest gales
to 35 knots. waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.monday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 102137
glfls 
expires:202512110900;;356637

open lake forecast for lake superior
national weather service marquette mi
437 pm est wed dec 10 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

troughing continues to gradually weaken to 29.8 inches over lake 
superior this evening as a 29.2 inch low over lake ontario tracks to 
southern quebec at 29.1 inches by tonight. this will allow 30.2 inch 
high pressure to rebuild over the northern plains while extending 
weak ridging over lake superior through thursday. ridging breaks 
down temporarily on friday as a 29.8 inch trough drops over the lake 
from northern ontario, but ridging quickly rebuilds as 30.7 inch 
high pressure over the northern plains extends back into the great 
lakes this weekend.



lsz263-110900-
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-
437 pm est wed dec 10 2025

.late this afternoon...northwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.thursday night...west winds 5 to 15 knots becoming northwest
less than 10 knots by midnight, then becoming west 5 to 15 knots
late. a slight chance of snow showers after midnight. waves calm
to 2 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a chance of snow showers in the morning, then
snow showers likely in the afternoon. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday night...northwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. heavy freezing spray. a chance
of snow showers. waves building to 6 to 9 feet occasionally to
11 feet. 
.saturday...northwest winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.saturday night...northwest gales to 35 knots becoming north
20 to 30 knots after midnight. heavy freezing spray. waves 4 to
7 feet occasionally to 9 feet. 
.sunday...northwest winds 10 to 20 knots becoming southwest gales
to 35 knots. waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet. 
.monday...west gales to 35 knots diminishing to 15 to 25 knots.
freezing spray. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 102137
glfls 
expires:202512110900;;356638

open lake forecast for lake superior
national weather service marquette mi
437 pm est wed dec 10 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

troughing continues to gradually weaken to 29.8 inches over lake 
superior this evening as a 29.2 inch low over lake ontario tracks to 
southern quebec at 29.1 inches by tonight. this will allow 30.2 inch 
high pressure to rebuild over the northern plains while extending 
weak ridging over lake superior through thursday. ridging breaks 
down temporarily on friday as a 29.8 inch trough drops over the lake 
from northern ontario, but ridging quickly rebuilds as 30.7 inch 
high pressure over the northern plains extends back into the great 
lakes this weekend.



lsz264-110900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
437 pm est wed dec 10 2025

.late this afternoon...northwest winds 20 to 30 knots. freezing
spray. waves 6 to 9 feet occasionally to 11 feet. 
.tonight...northwest winds 20 to 30 knots becoming north 15 to
25 knots by midnight. freezing spray. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.thursday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then diminishing to 5 to 15 knots by
mid afternoon. waves subsiding to calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a slight chance of snow showers in the morning,
then snow showers likely in the afternoon. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday night...northwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. heavy freezing spray. a chance
of snow showers. waves building to 8 to 11 feet occasionally to
14 feet. 
.saturday...northwest gales to 35 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.saturday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. heavy freezing spray. a chance of snow
showers. waves building to 5 to 9 feet occasionally to 11 feet. 
.sunday...north winds 15 to 25 knots becoming southwest gales to
35 knots. freezing spray. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.monday...west gales to 35 knots becoming northwest 15 to
25 knots. freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 102137
glfls 
expires:202512110900;;356639

open lake forecast for lake superior
national weather service marquette mi
437 pm est wed dec 10 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

troughing continues to gradually weaken to 29.8 inches over lake 
superior this evening as a 29.2 inch low over lake ontario tracks to 
southern quebec at 29.1 inches by tonight. this will allow 30.2 inch 
high pressure to rebuild over the northern plains while extending 
weak ridging over lake superior through thursday. ridging breaks 
down temporarily on friday as a 29.8 inch trough drops over the lake 
from northern ontario, but ridging quickly rebuilds as 30.7 inch 
high pressure over the northern plains extends back into the great 
lakes this weekend.



lsz265-110900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
437 pm est wed dec 10 2025

.late this afternoon...northwest winds to 30 knots with a few
gale force gusts to 35 knots possible. freezing spray. a slight
chance of snow showers. waves 6 to 9 feet occasionally to
11 feet. 
.tonight...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. a slight chance of snow showers. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. a slight chance of snow showers in the morning. waves
subsiding to 1 to 3 feet. 
.thursday night...northwest winds 10 to 20 knots backing west
late. a slight chance of snow showers. waves subsiding to calm to
2 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a slight chance of snow showers in the morning,
then snow showers likely in the afternoon. waves building to 2 to
4 feet. 
.friday night...west winds 20 to 30 knots becoming northwest
gales to 40 knots after midnight. freezing spray. snow showers.
waves building to 8 to 11 feet occasionally to 14 feet. 
.saturday...northwest gales to 40 knots. freezing spray. snow
showers likely. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.saturday night...northwest gales to 40 knots. freezing spray.
snow showers likely in the evening. a chance of snow showers
after midnight. waves 6 to 9 feet occasionally to 11 feet. 
.sunday...northwest winds 20 to 30 knots becoming southwest 15 to
25 knots. freezing spray. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.monday...west winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of snow showers. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 102137
glfls 
expires:202512110900;;356640

open lake forecast for lake superior
national weather service marquette mi
437 pm est wed dec 10 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

troughing continues to gradually weaken to 29.8 inches over lake 
superior this evening as a 29.2 inch low over lake ontario tracks to 
southern quebec at 29.1 inches by tonight. this will allow 30.2 inch 
high pressure to rebuild over the northern plains while extending 
weak ridging over lake superior through thursday. ridging breaks 
down temporarily on friday as a 29.8 inch trough drops over the lake 
from northern ontario, but ridging quickly rebuilds as 30.7 inch 
high pressure over the northern plains extends back into the great 
lakes this weekend.



lsz266-110900-
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-
437 pm est wed dec 10 2025

...gale warning in effect until 10 pm est this evening...

.late this afternoon...northwest gales to 40 knots. freezing
spray. a chance of snow showers. waves 7 to 11 feet occasionally
to 13 feet. 
.tonight...northwest gales to 40 knots becoming north gales to
35 knots by midnight, then becoming northwest 20 to 30 knots
late. freezing spray in the evening. a chance of snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet. 
.thursday...north winds 20 to 30 knots becoming northwest 15 to
25 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.thursday night...northwest winds 10 to 20 knots. a slight chance
of snow showers. waves subsiding to calm to 2 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a chance of snow showers. waves building to
2 to 4 feet. 
.friday night...west winds 20 to 30 knots becoming northwest
gales to 35 knots after midnight. freezing spray. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet. 
.saturday...northwest gales to 40 knots. freezing spray. snow
showers. waves building to 11 to 15 feet occasionally to 19 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet. 
.saturday night...north gales to 40 knots. freezing spray. snow
showers in the evening. a chance of snow showers after midnight.
waves 9 to 12 feet occasionally to 15 feet. 
.sunday...north winds 15 to 25 knots becoming southwest 20 to
30 knots. freezing spray. a chance of snow showers. waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.monday...southwest winds 20 to 30 knots veering west. freezing
spray. a chance of snow showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 102137
glfls 
expires:202512110900;;356641

open lake forecast for lake superior
national weather service marquette mi
437 pm est wed dec 10 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

troughing continues to gradually weaken to 29.8 inches over lake 
superior this evening as a 29.2 inch low over lake ontario tracks to 
southern quebec at 29.1 inches by tonight. this will allow 30.2 inch 
high pressure to rebuild over the northern plains while extending 
weak ridging over lake superior through thursday. ridging breaks 
down temporarily on friday as a 29.8 inch trough drops over the lake 
from northern ontario, but ridging quickly rebuilds as 30.7 inch 
high pressure over the northern plains extends back into the great 
lakes this weekend.



lsz267-110900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
437 pm est wed dec 10 2025

.late this afternoon...northwest winds to 30 knots with a few
gale force gusts to 40 knots possible. freezing spray. a chance
of snow showers. waves 6 to 9 feet occasionally to 11 feet
building to 7 to 10 feet occasionally to 13 feet. 
.tonight...north winds to 30 knots with a few gale force gusts to
40 knots possible diminishing to 20 to 30 knots late. freezing
spray in the evening. a chance of snow showers. waves building to
9 to 12 feet occasionally to 15 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.thursday...north winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then backing northwest by mid
afternoon. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.thursday night...northwest winds 10 to 20 knots. a slight chance
of snow showers. waves subsiding to calm to 2 feet. 
.friday...northwest winds 10 to 20 knots backing southwest in the
afternoon. a slight chance of snow showers in the morning, then
snow showers likely in the afternoon. waves building to 1 to
3 feet. 
.friday night...west winds 15 to 25 knots increasing to 20 to
30 knots after midnight. snow showers. freezing spray after
midnight. waves building to 10 to 14 feet occasionally to
18 feet. 
.saturday...northwest winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. freezing spray. snow showers. waves
subsiding to 9 to 12 feet occasionally to 15 feet. 
.saturday night...north winds 20 to 30 knots. freezing spray.
snow showers in the evening. a chance of snow showers after
midnight. waves subsiding to 7 to 10 feet occasionally to
13 feet. 
.sunday...north winds 15 to 25 knots becoming southwest 20 to
30 knots. freezing spray. a chance of snow showers. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.monday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. freezing spray. snow showers likely, then a chance of
snow showers. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$