fzus63 kdtx 022035
glflh 
expires:202512030445;;898039

open lake forecast for lake huron
national weather service detroit/pontiac mi
335 pm est tue dec 2 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...high pressure , 30.20 inches, will slide eastward
tonight towards the new england region. a strong arctic cold
front arrives wednesday afternoon bringing a period of increased
southwesterly flow tonight ahead of it and briefly stronger
northwest winds in its wake wednesday night into thursday
morning.


lhz361-362-030445-
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-
335 pm est tue dec 2 2025

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


$$

fzus63 kdtx 022035
glflh 
expires:202512030445;;898040

open lake forecast for lake huron
national weather service detroit/pontiac mi
335 pm est tue dec 2 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...high pressure , 30.20 inches, will slide eastward
tonight towards the new england region. a strong arctic cold
front arrives wednesday afternoon bringing a period of increased
southwesterly flow tonight ahead of it and briefly stronger
northwest winds in its wake wednesday night into thursday
morning.


lhz363-462-030445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
335 pm est tue dec 2 2025

.tonight...southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to around 30 knots. waves 1 to 3 feet
building to 6 to 9 feet. waves occasionally around 12 feet. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots late in the morning...then
decreasing to 20 to 25 knots with gusts to around 30 knots in the
afternoon. a chance of snow. a chance of waterspouts in the
afternoon. waves 8 to 12 feet. waves occasionally around 15 feet.
.wednesday night...west winds 20 to 25 knots veering to the
northwest in the late evening and early morning...then becoming
west to 30 knots after midnight. a chance of snow in the evening.
waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday...northwest winds to 30 knots becoming west 15 to
20 knots. a chance of snow in the morning. freezing spray in the
morning. waves 8 to 12 feet. waves occasionally around 15 feet. 
.thursday night...west winds 15 to 20 knots becoming southwest to
30 knots with gusts to 35 knot gales. waves 6 to 9 feet. waves
occasionally around 12 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 8 to 12 feet. waves 
occasionally around 15 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...northwest winds 10 to 15 knots. a chance of snow in the
late evening and early morning. waves 3 to 5 feet. 


$$

fzus63 kmkx 022031
glflm 
expires:202512030430;;897679

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
231 pm cst tue dec 2 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 
wednesday. gusty southwest winds are expected ahead of this front
tonight into early wednesday morning, shifting to gusty northwest
winds behind it wednesday afternoon and night. winds will remain 
just below gales for most the lake, though a brief period of low 
end gales is possible wednesday night over the far northern part 
of the lake. very cold air with this system will result in 
periods of freezing spray wednesday night into 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, with some gale force gusts possible over the
northern portions of the lake.


lmz261-362-364-366-563-565-567-868-030430-
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-
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-
231 pm cst tue dec 2 2025

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmkx 022031
glflm 
expires:202512030430;;897680

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
231 pm cst tue dec 2 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 
wednesday. gusty southwest winds are expected ahead of this front
tonight into early wednesday morning, shifting to gusty northwest
winds behind it wednesday afternoon and night. winds will remain 
just below gales for most the lake, though a brief period of low 
end gales is possible wednesday night over the far northern part 
of the lake. very cold air with this system will result in 
periods of freezing spray wednesday night into 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, with some gale force gusts possible over the
northern portions of the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-030430-
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-
231 pm cst tue dec 2 2025

sheboygan wi to pentwater mi south...

.tonight...southwest winds 15 to 25 kt increasing to 30 kt.
chance of flurries overnight. waves 3 to 5 ft building to 6 to
9 ft occasionally to 12 ft. 
.wednesday...southwest winds to 30 kt becoming northwest. chance
of snow. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday night...northwest winds to 30 kt. chance of snow
showers in the evening. freezing spray overnight. waves 7 to
10 ft occasionally to 13 ft building to 10 to 14 ft occasionally
to 18 ft. 
.thursday...northwest winds to 30 kt becoming west 10 to 20 kt in
the afternoon. freezing spray in the morning. waves 8 to 12 ft
occasionally to 16 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.thursday night...southwest winds to 30 kt. freezing spray 
overnight. 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. chance of snow in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 12 ft occasionally to 16 ft. 
.friday night...southwest winds 15 to 25 kt becoming west. chance
of snow. waves 6 to 9 ft occasionally to 12 ft. 
.saturday...west winds 10 to 20 kt becoming northwest. waves 4 to
7 ft occasionally to 9 ft. 
.sunday...northeast winds 10 to 20 kt. chance of snow. waves 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 022101
glfls 
expires:202512030900;;899156

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 2 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 is swinging eastward towards the lake this 
afternoon, extending south from a 29.5 inch low over hudson bay. the 
trough exits eastward wednesday morning. in its wake, a 30.5 inch 
high builds over the dakotas wednesday 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 at 29.6 
inches. friday night, another 29.7 inch trough will pass over the 
lake. over the weekend, lake superior will be between a 30.3 inch 
high over saskatchewan and a low of 29.6 inches over quebec, with 
the high approaching lake superior late in the weekend to early next 
week.



lsz162-030900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est tue dec 2 2025 /300 pm cst tue dec 2 2025/

.late this afternoon...southwest winds 15 to 25 knots. a slight
chance of snow showers. waves 4 to 7 feet occasionally to 9 feet.
.tonight...southwest winds 15 to 25 knots veering northwest late.
a chance of snow showers. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 20 to 30 knots. freezing spray in
the afternoon. waves building to 5 to 8 feet occasionally to
10 feet. 
.wednesday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. heavy freezing spray in the evening. a
slight chance of snow showers. waves subsiding to 2 to 4 feet. 
.thursday...west winds 15 to 25 knots becoming southwest gales to
35 knots in the afternoon. freezing spray in the afternoon. a
chance of snow showers in the afternoon. waves subsiding to 1 to
3 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.thursday night...southwest gales to 40 knots becoming west gales
to 35 knots after midnight. freezing spray. snow showers in the
evening. a chance of snow showers after midnight. waves building
to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
5 feet occasionally to 7 feet. 
.friday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.friday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots veering north. waves
subsiding to calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 022101
glfls 
expires:202512030900;;899157

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 2 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 is swinging eastward towards the lake this 
afternoon, extending south from a 29.5 inch low over hudson bay. the 
trough exits eastward wednesday morning. in its wake, a 30.5 inch 
high builds over the dakotas wednesday 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 at 29.6 
inches. friday night, another 29.7 inch trough will pass over the 
lake. over the weekend, lake superior will be between a 30.3 inch 
high over saskatchewan and a low of 29.6 inches over quebec, with 
the high approaching lake superior late in the weekend to early next 
week.



lsz263-030900-
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 pm est tue dec 2 2025

...gale watch in effect from wednesday afternoon through late
wednesday night...

.late this afternoon...southwest winds 20 to 30 knots. a slight
chance of snow showers. waves 4 to 8 feet occasionally to
10 feet. 
.tonight...southwest winds 15 to 25 knots veering west by
midnight, then becoming northwest 20 to 30 knots late. snow
showers likely. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.wednesday...northwest winds 20 to 30 knots 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. 
.wednesday night...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 gales to
40 knots in the afternoon. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.thursday night...southwest gales to 40 knots veering west after
midnight. freezing spray. snow showers likely in the evening. a
chance of snow showers after midnight. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots becoming west 10 to
20 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.friday night...west winds 15 to 25 knots veering northwest after
midnight. a chance of snow showers. waves 2 to 4 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 022101
glfls 
expires:202512030900;;899158

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 2 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 is swinging eastward towards the lake this 
afternoon, extending south from a 29.5 inch low over hudson bay. the 
trough exits eastward wednesday morning. in its wake, a 30.5 inch 
high builds over the dakotas wednesday 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 at 29.6 
inches. friday night, another 29.7 inch trough will pass over the 
lake. over the weekend, lake superior will be between a 30.3 inch 
high over saskatchewan and a low of 29.6 inches over quebec, with 
the high approaching lake superior late in the weekend to early next 
week.



lsz264-030900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est tue dec 2 2025

...gale watch in effect from wednesday morning through thursday
morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 022101
glfls 
expires:202512030900;;899159

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 2 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 is swinging eastward towards the lake this 
afternoon, extending south from a 29.5 inch low over hudson bay. the 
trough exits eastward wednesday morning. in its wake, a 30.5 inch 
high builds over the dakotas wednesday 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 at 29.6 
inches. friday night, another 29.7 inch trough will pass over the 
lake. over the weekend, lake superior will be between a 30.3 inch 
high over saskatchewan and a low of 29.6 inches over quebec, with 
the high approaching lake superior late in the weekend to early next 
week.



lsz265-030900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est tue dec 2 2025

...gale watch in effect from wednesday morning through thursday
morning...

.late this afternoon...southwest winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...southwest winds 20 to 30 knots veering west by
midnight. a chance of snow showers in the evening, then snow
showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...northwest gales to 40 knots. snow showers likely.
freezing spray in the afternoon. waves building to 5 to 9 feet
occasionally to 11 feet. 
.wednesday night...northwest gales to 45 knots. freezing spray.
snow showers in the evening. a chance of snow showers after
midnight. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 6 to 9 feet occasionally to 11 feet. 
.thursday...northwest winds 20 to 30 knots backing southwest in
the afternoon. freezing spray in the morning. a chance of snow
showers. waves subsiding to 2 to 4 feet. 
.thursday night...southwest gales to 40 knots becoming west gales
to 35 knots after midnight. snow showers. waves building 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 increasing to 20 to
30 knots after midnight. snow showers likely. 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 subsiding to 1 to
3 feet. 
.sunday...northwest winds 15 to 25 knots. a chance of snow
showers. waves subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 022101
glfls 
expires:202512030900;;899160

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 2 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 is swinging eastward towards the lake this 
afternoon, extending south from a 29.5 inch low over hudson bay. the 
trough exits eastward wednesday morning. in its wake, a 30.5 inch 
high builds over the dakotas wednesday 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 at 29.6 
inches. friday night, another 29.7 inch trough will pass over the 
lake. over the weekend, lake superior will be between a 30.3 inch 
high over saskatchewan and a low of 29.6 inches over quebec, with 
the high approaching lake superior late in the weekend to early next 
week.



lsz266-030900-
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 pm est tue dec 2 2025

...gale watch in effect from wednesday morning through thursday
morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 022101
glfls 
expires:202512030900;;899161

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 2 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 is swinging eastward towards the lake this 
afternoon, extending south from a 29.5 inch low over hudson bay. the 
trough exits eastward wednesday morning. in its wake, a 30.5 inch 
high builds over the dakotas wednesday 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 at 29.6 
inches. friday night, another 29.7 inch trough will pass over the 
lake. over the weekend, lake superior will be between a 30.3 inch 
high over saskatchewan and a low of 29.6 inches over quebec, with 
the high approaching lake superior late in the weekend to early next 
week.



lsz267-030900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est tue dec 2 2025

...gale watch in effect from wednesday morning through thursday
morning...

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

note, wave height forecasts are for ice free areas.

$$