fzus63 kdtx 030851
glflh 
expires:202512031700;;925698

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 am est wed dec 3 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...a strong arctic cold front arrives wednesday 
afternoon bringing a period of increased southwesterly flow ahead 
of it and briefly stronger northwest winds in its wake wednesday 
night into thursday morning.


lhz361-362-031700-
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-
351 am est wed dec 3 2025

.today...southwest winds 20 to 25 knots with gusts to around
30 knots. a chance of snow showers. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.tonight...northwest winds 20 to 25 knots becoming west to
30 knots early in the morning. a few gusts to 35 knot gales. a 
chance of snow showers after midnight. waves 8 to 12 feet. waves 
occasionally around 15 feet. 
.thursday...west winds to 30 knots decreasing to 15 to 20 knots. a
few gusts to 35 knot gales. a chance of snow showers in the 
morning. freezing spray in the morning. snow may be heavy at times
in the morning. waves 8 to 12 feet. waves occasionally around 15 
feet. 
.thursday night...southwest winds 15 to 20 knots becoming south
to 30 knots. a chance of snow after midnight. waves 5 to 7 feet
building to 10 to 14 feet after midnight. waves occasionally
around 18 feet. 
.friday...southwest winds to 30 knots with isolated gusts to 35
knot gales decreasing to 15 to 20 knots. a chance of snow. waves 
12 to 16 feet subsiding to 6 to 9 feet late in the afternoon. 
waves occasionally around 20 feet. 
.saturday...west winds 15 to 20 knots becoming northwest 10 to
15 knots in the late evening and early morning. a chance of snow
early in the morning. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.sunday...north winds 10 to 15 knots backing to the northwest
until early morning. waves 2 to 4 feet subsiding to 1 to 3 feet
in the late morning and early afternoon...then building to 2 to
4 feet until early morning. 


$$

fzus63 kdtx 030851
glflh 
expires:202512031700;;925699

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 am est wed dec 3 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...a strong arctic cold front arrives wednesday 
afternoon bringing a period of increased southwesterly flow ahead 
of it and briefly stronger northwest winds in its wake wednesday 
night into thursday morning.


lhz363-462-031700-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
351 am est wed dec 3 2025

.today...southwest winds 20 to 25 knots with gusts to around
30 knots. a chance of snow showers in the afternoon. waves 8 to
12 feet. waves occasionally around 15 feet. 
.tonight...west winds 20 to 25 knots veering to the northwest in
the late evening and early morning...then becoming west to
30 knots early in the morning. a chance of snow showers in the
evening. waves 8 to 12 feet. waves occasionally around 15 feet. 
.thursday...northwest winds to 30 knots decreasing to 15 to
20 knots. freezing spray in the morning. a chance of snow and
freezing rain in the morning...then a chance of freezing rain in
the afternoon. waves 10 to 14 feet. waves occasionally around
18 feet. 
.thursday night...west winds 15 to 20 knots becoming southwest to
30 knots. waves 6 to 9 feet building to 10 to 14 feet after 
midnight. waves occasionally around 18 feet. 
.friday...southwest winds to 30 knots with isolated gusts to 35
knot gales decreasing to 20 to 25 knots late in the afternoon. a 
chance of snow late in the afternoon. waves 10 to 14 feet 
subsiding to 6 to 9 feet late in the evening. waves occasionally 
around 18 feet.
.saturday...west winds 15 to 20 knots becoming northwest 10 to
15 knots in the late evening and early morning. waves 5 to
7 feet. waves occasionally around 10 feet. 
.sunday...northwest winds 10 to 15 knots. a chance of snow until
early morning. waves 2 to 4 feet. 


$$

fzus63 kmkx 030824
glflm 
expires:202512031615;;924888

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 am cst wed dec 3 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...

a strong cold front will move southeast across lake michigan 
today. gusty southwest winds are occuring ahead of the front this 
morning, and will become gusty from the northwest this afternoon 
and night. winds will remain just below gales for most the lake, 
though a brief period of low end gales is possible late tonight 
over the far northern part of the lake. very cold air with this 
system will result in periods of freezing spray wednesday night 
and again thursday night and friday.

lighter winds are expected thursday, with the influence of strong
high pressure around 30.4 inches over illinois and indiana. 
another period of elevated southwest winds will occur thursday 
night into friday. the potential for these winds to reach gale
force over the northern third of the lake is increasing, and a
gale watch has been issued from thursday evening through early
friday morning. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-031615-
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-
224 am cst wed dec 3 2025

sheboygan wi to pentwater mi south...

.today...southwest winds to 30 kt becoming northwest 15 to 25 kt.
chance of snow this morning, then chance of flurries this
afternoon. waves 8 to 11 ft occasionally to 14 ft subsiding to
4 to 7 ft occasionally to 9 ft. 
.tonight...northwest winds 15 to 25 kt. freezing spray overnight.
waves 6 to 9 ft occasionally to 12 ft. 
.thursday...northwest winds to 30 kt diminishing to 10 to 20 kt
late in the morning, then becoming west early in the afternoon
becoming southwest late. freezing spray in the morning. waves
7 to 10 ft occasionally to 13 ft subsiding to 3 to 5 ft. 
.thursday night...southwest winds to 30 kt. freezing spray
overnight. waves 5 to 8 ft occasionally to 10 ft building to 8 to
12 ft occasionally to 16 ft. 
.friday...southwest winds to 30 kt. waves 8 to 12 ft occasionally
to 16 ft subsiding to 7 to 10 ft occasionally to 13 ft. 
.friday night...southwest winds 15 to 25 kt becoming west 10 to
20 kt. chance of snow. waves 5 to 8 ft occasionally to 10 ft. 
.saturday...west winds 10 to 20 kt becoming northwest. waves 4 to
7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.sunday...northeast winds 10 to 20 kt. chance of snow. waves 3 to
5 ft.  

$$

fzus63 kmkx 030824
glflm 
expires:202512031615;;924887

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 am cst wed dec 3 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...

a strong cold front will move southeast across lake michigan 
today. gusty southwest winds are occuring ahead of the front this 
morning, and will become gusty from the northwest this afternoon 
and night. winds will remain just below gales for most the lake, 
though a brief period of low end gales is possible late tonight 
over the far northern part of the lake. very cold air with this 
system will result in periods of freezing spray wednesday night 
and again thursday night and friday.

lighter winds are expected thursday, with the influence of strong
high pressure around 30.4 inches over illinois and indiana. 
another period of elevated southwest winds will occur thursday 
night into friday. the potential for these winds to reach gale
force over the northern third of the lake is increasing, and a
gale watch has been issued from thursday evening through early
friday morning. 


lmz567-868-031615-
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-
224 am cst wed dec 3 2025

two rivers wi to manistee mi south to sheboygan wi to pentwater
mi...

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

$$

fzus63 kmkx 030824
glflm 
expires:202512031615;;924886

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 am cst wed dec 3 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...

a strong cold front will move southeast across lake michigan 
today. gusty southwest winds are occuring ahead of the front this 
morning, and will become gusty from the northwest this afternoon 
and night. winds will remain just below gales for most the lake, 
though a brief period of low end gales is possible late tonight 
over the far northern part of the lake. very cold air with this 
system will result in periods of freezing spray wednesday night 
and again thursday night and friday.

lighter winds are expected thursday, with the influence of strong
high pressure around 30.4 inches over illinois and indiana. 
another period of elevated southwest winds will occur thursday 
night into friday. the potential for these winds to reach gale
force over the northern third of the lake is increasing, and a
gale watch has been issued from thursday evening through early
friday morning. 


lmz261-362-364-366-563-565-031615-
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 point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
224 am cst wed dec 3 2025

two rivers wi to manistee mi north...

...gale watch in effect from thursday evening through late
thursday night...

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

$$

fzus63 kmqt 030900
glfls 
expires:202512032100;;926068

open lake forecast for lake superior
national weather service marquette mi
400 am est wed dec 3 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...

a 29.7 inch trough extending south from a 29.4 inch low over hudson 
bay will pushpast lake superior late this morning. in its wake, a 
30.5 inch high builds over the dakotas this evening. as this high 
shifts into the lower midwest thursday, it will pass a 30.2 inch 
ridge over the lake. meanwhile, a 29.7 inch low will move over lake 
winnipeg before passing north of the lake overnight into friday. 
friday night, another 29.7 inch trough will pass over the lake. as 
the trough (and its parent low near the eastern shores of hudson 
bay) shifts east, a 30.4 inch high straddles the north dakota/canada 
by saturday evening. this high will move over the upper mississippi 
river valley sunday evening at 30.5 inches, shifting towards the 
lower great lakes for monday ahead of the next clipper low.



lsz266-032100-
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-
400 am est wed dec 3 2025

...gale warning in effect through thursday morning...
...heavy freezing spray warning in effect from this evening
through thursday morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 030900
glfls 
expires:202512032100;;926069

open lake forecast for lake superior
national weather service marquette mi
400 am est wed dec 3 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...

a 29.7 inch trough extending south from a 29.4 inch low over hudson 
bay will pushpast lake superior late this morning. in its wake, a 
30.5 inch high builds over the dakotas this evening. as this high 
shifts into the lower midwest thursday, it will pass a 30.2 inch 
ridge over the lake. meanwhile, a 29.7 inch low will move over lake 
winnipeg before passing north of the lake overnight into friday. 
friday night, another 29.7 inch trough will pass over the lake. as 
the trough (and its parent low near the eastern shores of hudson 
bay) shifts east, a 30.4 inch high straddles the north dakota/canada 
by saturday evening. this high will move over the upper mississippi 
river valley sunday evening at 30.5 inches, shifting towards the 
lower great lakes for monday ahead of the next clipper low.



lsz267-032100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est wed dec 3 2025

...gale warning in effect through thursday morning...

.early this morning...southwest winds 20 to 30 knots. snow
showers. waves 4 to 7 feet occasionally to 9 feet. 
.today...northwest gales to 35 knots becoming north gales to
40 knots by late morning, then becoming northwest gales to
35 knots by mid afternoon. snow showers likely. freezing spray in
the afternoon. waves building to 8 to 11 feet occasionally to
14 feet. 
.tonight...northwest gales to 40 knots. freezing spray. snow
showers. waves building to 11 to 15 feet occasionally to 19 feet,
then subsiding to 10 to 14 feet occasionally to 18 feet. 
.thursday...northwest winds 20 to 30 knots backing southwest by
mid afternoon. freezing spray in the morning. snow showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday night...southwest gales to 40 knots. freezing spray.
snow showers. waves building to 7 to 11 feet occasionally to
14 feet. 
.friday...southwest winds 20 to 30 knots becoming west 15 to
25 knots in the afternoon. snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.friday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. snow showers. waves subsiding to
3 to 5 feet occasionally to 7 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. snow showers likely. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of snow showers. waves 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 030900
glfls 
expires:202512032100;;926064

open lake forecast for lake superior
national weather service marquette mi
400 am est wed dec 3 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...

a 29.7 inch trough extending south from a 29.4 inch low over hudson 
bay will pushpast lake superior late this morning. in its wake, a 
30.5 inch high builds over the dakotas this evening. as this high 
shifts into the lower midwest thursday, it will pass a 30.2 inch 
ridge over the lake. meanwhile, a 29.7 inch low will move over lake 
winnipeg before passing north of the lake overnight into friday. 
friday night, another 29.7 inch trough will pass over the lake. as 
the trough (and its parent low near the eastern shores of hudson 
bay) shifts east, a 30.4 inch high straddles the north dakota/canada 
by saturday evening. this high will move over the upper mississippi 
river valley sunday evening at 30.5 inches, shifting towards the 
lower great lakes for monday ahead of the next clipper low.



lsz162-032100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est wed dec 3 2025 /300 am cst wed dec 3 2025/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 030900
glfls 
expires:202512032100;;926065

open lake forecast for lake superior
national weather service marquette mi
400 am est wed dec 3 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...

a 29.7 inch trough extending south from a 29.4 inch low over hudson 
bay will pushpast lake superior late this morning. in its wake, a 
30.5 inch high builds over the dakotas this evening. as this high 
shifts into the lower midwest thursday, it will pass a 30.2 inch 
ridge over the lake. meanwhile, a 29.7 inch low will move over lake 
winnipeg before passing north of the lake overnight into friday. 
friday night, another 29.7 inch trough will pass over the lake. as 
the trough (and its parent low near the eastern shores of hudson 
bay) shifts east, a 30.4 inch high straddles the north dakota/canada 
by saturday evening. this high will move over the upper mississippi 
river valley sunday evening at 30.5 inches, shifting towards the 
lower great lakes for monday ahead of the next clipper low.



lsz263-032100-
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-
400 am est wed dec 3 2025

...gale warning in effect from 4 pm est this afternoon through
late tonight...
...heavy freezing spray warning in effect from this evening
through thursday morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 030900
glfls 
expires:202512032100;;926066

open lake forecast for lake superior
national weather service marquette mi
400 am est wed dec 3 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...

a 29.7 inch trough extending south from a 29.4 inch low over hudson 
bay will pushpast lake superior late this morning. in its wake, a 
30.5 inch high builds over the dakotas this evening. as this high 
shifts into the lower midwest thursday, it will pass a 30.2 inch 
ridge over the lake. meanwhile, a 29.7 inch low will move over lake 
winnipeg before passing north of the lake overnight into friday. 
friday night, another 29.7 inch trough will pass over the lake. as 
the trough (and its parent low near the eastern shores of hudson 
bay) shifts east, a 30.4 inch high straddles the north dakota/canada 
by saturday evening. this high will move over the upper mississippi 
river valley sunday evening at 30.5 inches, shifting towards the 
lower great lakes for monday ahead of the next clipper low.



lsz264-032100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est wed dec 3 2025

...gale warning in effect through thursday morning...
...heavy freezing spray warning in effect from this evening
through thursday morning...

.early this morning...north winds 20 to 30 knots. a chance of
snow showers. waves 3 to 6 feet occasionally to 8 feet building
to 4 to 7 feet occasionally to 9 feet. 
.today...north gales to 35 knots becoming northwest 20 to
30 knots by late morning, then increasing to gales to 35 knots by
mid afternoon. freezing spray. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest gales to 35 knots. heavy freezing spray. a
chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 
.thursday...northwest winds 20 to 30 knots becoming west 15 to
25 knots by late morning, then becoming southwest 20 to 30 knots
by mid afternoon. freezing spray in the morning. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 5 to 8 feet occasionally to 10 feet. 
.thursday night...southwest gales to 35 knots veering west after
midnight. freezing spray in the evening. snow showers. waves
building to 10 to 14 feet occasionally to 18 feet, then subsiding
to 8 to 11 feet occasionally to 14 feet. 
.friday...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. a chance of snow showers. waves subsiding to
2 to 4 feet. 
.friday night...west winds 10 to 20 knots becoming northwest
20 to 30 knots after midnight. a chance of snow showers. freezing
spray after midnight. waves building to 3 to 6 feet occasionally
to 8 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 030900
glfls 
expires:202512032100;;926067

open lake forecast for lake superior
national weather service marquette mi
400 am est wed dec 3 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...

a 29.7 inch trough extending south from a 29.4 inch low over hudson 
bay will pushpast lake superior late this morning. in its wake, a 
30.5 inch high builds over the dakotas this evening. as this high 
shifts into the lower midwest thursday, it will pass a 30.2 inch 
ridge over the lake. meanwhile, a 29.7 inch low will move over lake 
winnipeg before passing north of the lake overnight into friday. 
friday night, another 29.7 inch trough will pass over the lake. as 
the trough (and its parent low near the eastern shores of hudson 
bay) shifts east, a 30.4 inch high straddles the north dakota/canada 
by saturday evening. this high will move over the upper mississippi 
river valley sunday evening at 30.5 inches, shifting towards the 
lower great lakes for monday ahead of the next clipper low.



lsz265-032100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est wed dec 3 2025

...gale warning in effect through thursday morning...

.early this morning...northwest winds 20 to 30 knots. snow
showers likely. waves 3 to 5 feet occasionally to 7 feet. 
.today...north gales to 35 knots backing northwest. freezing
spray. snow showers likely in the morning. a chance of snow
showers in the afternoon. waves building to 6 to 10 feet
occasionally to 13 feet. 
.tonight...northwest gales to 40 knots. freezing spray. a chance
of snow showers. waves building to 6 to 10 feet occasionally to
13 feet. 
.thursday...northwest gales to 35 knots becoming west 20 to
30 knots by late morning, then backing southwest by mid
afternoon. freezing spray in the morning. a chance of snow
showers. waves subsiding to 2 to 4 feet. 
.thursday night...southwest gales to 35 knots. freezing spray in
the evening. snow showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday...west winds 20 to 30 knots diminishing to 15 to 25 knots
in the afternoon. a chance of snow showers. waves subsiding to
1 to 3 feet. 
.friday night...west winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. snow showers likely in the
evening, then a chance of snow showers after midnight. waves
building to 3 to 5 feet occasionally to 7 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to calm to 2 feet. 
.sunday...northwest winds 15 to 25 knots becoming west 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

note, wave height forecasts are for ice free areas.

$$