fzus63 kdtx 250859
glflh 
expires:202602251700;;220767

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 am est wed feb 25 2026

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...westerly flow and lake effect snow showers persist
over the great lakes today in the wake of a departing clipper,
29.30 inches, and its attendant cold front. high pressure, 29.90
inches, then builds in tonight through thursday leading to drier
and calmer marine conditions.


lhz361-362-251700-
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-
359 am est wed feb 25 2026

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


$$

fzus63 kdtx 250859
glflh 
expires:202602251700;;220768

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 am est wed feb 25 2026

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...westerly flow and lake effect snow showers persist
over the great lakes today in the wake of a departing clipper,
29.30 inches, and its attendant cold front. high pressure, 29.90
inches, then builds in tonight through thursday leading to drier
and calmer marine conditions.


lhz363-251700-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
359 am est wed feb 25 2026

.today...west winds 15 to 20 knots. a chance of snow showers.
waves 4 to 6 feet. 
.tonight...west winds 15 to 20 knots decreasing to 10 to 15 knots
after midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 
.thursday...west winds 5 to 10 knots becoming southwest 10 to
15 knots early in the afternoon. waves 3 to 5 feet subsiding to
1 to 3 feet in the late morning and afternoon. 
.thursday night...southwest winds 10 to 15 knots. waves 1 to
3 feet building to 2 to 4 feet in the late evening and overnight.
.friday...southwest winds 15 to 20 knots becoming south 20 to
25 knots with gusts to around 30 knots late in the afternoon...
then becoming southwest 15 to 20 knots with gusts to around
30 knots late in the evening. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.saturday...northwest winds 15 to 20 knots increasing to 20 to
25 knots by midnight. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots until early evening...then veering to the northeast by
midnight. waves 6 to 9 feet subsiding to 2 to 4 feet. waves
occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 250859
glflh 
expires:202602251700;;220769

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 am est wed feb 25 2026

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...westerly flow and lake effect snow showers persist
over the great lakes today in the wake of a departing clipper,
29.30 inches, and its attendant cold front. high pressure, 29.90
inches, then builds in tonight through thursday leading to drier
and calmer marine conditions.


lhz462>464-251700-
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-
359 am est wed feb 25 2026

.today...west winds 15 to 20 knots. a chance of snow showers.
waves 3 to 5 feet. 
.tonight...west winds 15 to 20 knots decreasing to 10 to 15 knots
after midnight. waves 3 to 5 feet. 
.thursday...southwest winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday night...south winds 5 to 10 knots increasing to 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet. 
.friday...south winds 10 to 15 knots increasing to 15 to 20 knots
with gusts to around 30 knots. waves 3 to 5 feet building to 5 to
7 feet late in the afternoon. waves occasionally around 10 feet. 
.saturday...west winds 15 to 20 knots becoming northwest 10 to
15 knots until early evening...then increasing to 15 to 20 knots
by midnight. a chance of snow . waves 5 to 7 feet. waves
occasionally around 10 feet. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots until early evening...then veering to the northeast by
midnight. waves 4 to 6 feet. waves occasionally around 8 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 250948
glflm 
expires:202602251615;;223275

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
348 am cst wed feb 25 2026

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...

northwest winds have developed this morning in the wake of a 29.5
inch low pressure trough and have become gusty. lighter winds are
expected tonight into thursday as high pressure of 30.0 inches 
moves into the upper great lakes. south to southwest winds will 
then pick up later thursday into friday as low pressure of 29.3 
inches over saskatchewan deepens to 29.1 inches over ontario. the 
associated cold front will cross lake michigan friday afternoon 
and evening. a few gales will be possible across northern portions
of the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-251615-
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-
348 am cst wed feb 25 2026

sheboygan wi to pentwater mi south...

.today...northwest winds to 30 kt diminishing to 10 to 20 kt.
freezing spray. waves 8 to 11 ft occasionally to 14 ft subsiding
to 7 to 10 ft occasionally to 13 ft. 
.tonight...northwest winds 10 to 20 kt diminishing to 5 to 10 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.thursday...west winds 5 to 10 kt becoming southwest 10 to 15 kt
late in the morning, then increasing to 10 to 20 kt early in the
afternoon becoming southwest 10 to 20 kt late. waves 2 to 4 ft. 
.thursday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.friday...southwest winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally
to 10 ft. 
.friday night...southwest winds to 30 kt becoming northwest.
waves 5 to 8 ft occasionally to 10 ft. 
.saturday...northwest winds 15 to 25 kt becoming north 10 to
20 kt. chance of snow. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...north winds 15 to 25 kt becoming northeast 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 250948
glflm 
expires:202602251615;;223274

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
348 am cst wed feb 25 2026

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...

northwest winds have developed this morning in the wake of a 29.5
inch low pressure trough and have become gusty. lighter winds are
expected tonight into thursday as high pressure of 30.0 inches 
moves into the upper great lakes. south to southwest winds will 
then pick up later thursday into friday as low pressure of 29.3 
inches over saskatchewan deepens to 29.1 inches over ontario. the 
associated cold front will cross lake michigan friday afternoon 
and evening. a few gales will be possible across northern portions
of the lake.


lmz261-362-364-366-563-565-567-868-251615-
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-
348 am cst wed feb 25 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmqt 250901
glfls 
expires:202602252100;;220896

open lake forecast for lake superior
national weather service marquette mi
400 am est wed feb 25 2026

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 29.3 inch low over northeastern ontario moves to quebec this 
afternoon with weak ridging building over lake superior at 29.9 
inches tonight into thursday. a strong clipper low averaging 29.1 
inches moves across ontario friday and friday night, sending a 29.5 
inch trough across the lake. a 30.6 inch high builds over the lake 
by sunday.



lsz264-252100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est wed feb 25 2026

...heavy freezing spray warning in effect until 4 pm est this
afternoon...

.early this morning...northwest winds 20 to 30 knots. heavy
freezing spray. a chance of snow showers. waves 6 to 9 feet
occasionally to 11 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then backing west late. a slight chance of
snow showers. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of snow. waves building to
1 to 3 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.friday...southwest winds 20 to 30 knots increasing to gales to
40 knots in the afternoon. waves building to 8 to 11 feet
occasionally to 14 feet. 
.friday night...west gales to 45 knots veering northwest after
midnight. heavy freezing spray. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet. 
.saturday...northwest gales to 40 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots becoming southwest 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250901
glfls 
expires:202602252100;;220897

open lake forecast for lake superior
national weather service marquette mi
400 am est wed feb 25 2026

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 29.3 inch low over northeastern ontario moves to quebec this 
afternoon with weak ridging building over lake superior at 29.9 
inches tonight into thursday. a strong clipper low averaging 29.1 
inches moves across ontario friday and friday night, sending a 29.5 
inch trough across the lake. a 30.6 inch high builds over the lake 
by sunday.



lsz265-252100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est wed feb 25 2026

...gale warning in effect until 1 pm est this afternoon...
...heavy freezing spray warning in effect until 4 pm est this
afternoon...

.early this morning...northwest gales to 35 knots. heavy freezing
spray. a chance of snow showers. waves 5 to 8 feet occasionally
to 10 feet. 
.today...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. a chance of snow showers. waves subsiding
to calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots backing south by mid
afternoon. a chance of snow. waves calm to 2 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds 20 to 30 knots increasing to gales to
40 knots in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...west gales to 45 knots veering northwest after
midnight. heavy freezing spray. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 8 to 11 feet
occasionally to 14 feet. 
.saturday...northwest gales to 40 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250901
glfls 
expires:202602252100;;220898

open lake forecast for lake superior
national weather service marquette mi
400 am est wed feb 25 2026

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 29.3 inch low over northeastern ontario moves to quebec this 
afternoon with weak ridging building over lake superior at 29.9 
inches tonight into thursday. a strong clipper low averaging 29.1 
inches moves across ontario friday and friday night, sending a 29.5 
inch trough across the lake. a 30.6 inch high builds over the lake 
by sunday.



lsz266-252100-
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 feb 25 2026

...gale warning in effect until 1 pm est this afternoon...
...heavy freezing spray warning in effect through late tonight...

.early this morning...northwest gales to 40 knots. heavy freezing
spray. a chance of snow showers. waves 9 to 12 feet occasionally
to 15 feet building to 10 to 14 feet occasionally to 18 feet. 
.today...northwest gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 8 to 11 feet
occasionally to 14 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then backing west late. heavy freezing
spray. a chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots by late morning, then backing south by mid afternoon. a
chance of snow in the morning, then snow likely in the afternoon.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.thursday night...southwest winds 15 to 25 knots. waves 2 to
4 feet. 
.friday...south winds 20 to 30 knots becoming southwest gales to
40 knots in the afternoon. waves building to 7 to 10 feet
occasionally to 13 feet. 
.friday night...west storm force winds to 50 knots veering
northwest after midnight. heavy freezing spray. waves building to
17 to 22 feet occasionally to 28 feet, then subsiding to 15 to
20 feet occasionally to 25 feet. 
.saturday...northwest gales to 40 knots diminishing to 20 to
30 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.sunday...northwest winds 15 to 25 knots backing south. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250901
glfls 
expires:202602252100;;220899

open lake forecast for lake superior
national weather service marquette mi
400 am est wed feb 25 2026

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 29.3 inch low over northeastern ontario moves to quebec this 
afternoon with weak ridging building over lake superior at 29.9 
inches tonight into thursday. a strong clipper low averaging 29.1 
inches moves across ontario friday and friday night, sending a 29.5 
inch trough across the lake. a 30.6 inch high builds over the lake 
by sunday.



lsz267-252100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est wed feb 25 2026

...heavy freezing spray warning in effect through late tonight...

.early this morning...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible. heavy freezing spray. a chance
of snow showers. waves 9 to 12 feet occasionally to 15 feet. 
.today...northwest winds to 30 knots with a few gale force gusts
to 35 knots possible. heavy freezing spray. a chance of snow
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 8 to 11 feet occasionally to 14 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. heavy freezing spray in the evening. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday...southwest winds 5 to 15 knots becoming south 10 to
20 knots. a chance of snow. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.thursday night...south winds 15 to 25 knots veering southwest
after midnight. a slight chance of snow showers in the evening.
waves 2 to 4 feet. 
.friday...south winds 20 to 30 knots increasing to gales to
40 knots in the afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.friday night...west gales to 45 knots increasing to storm force
winds to 50 knots after midnight. heavy freezing spray after
midnight. waves building to 17 to 22 feet occasionally to
28 feet, then subsiding to 15 to 20 feet occasionally to 25 feet.
.saturday...northwest gales to 40 knots becoming north 15 to
25 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday...north winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250901
glfls 
expires:202602252100;;220894

open lake forecast for lake superior
national weather service marquette mi
400 am est wed feb 25 2026

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 29.3 inch low over northeastern ontario moves to quebec this 
afternoon with weak ridging building over lake superior at 29.9 
inches tonight into thursday. a strong clipper low averaging 29.1 
inches moves across ontario friday and friday night, sending a 29.5 
inch trough across the lake. a 30.6 inch high builds over the lake 
by sunday.



lsz162-252100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est wed feb 25 2026 /300 am cst wed feb 25 2026/

...heavy freezing spray warning in effect until 7 am est /6 am
cst/ this morning...

.early this morning...northwest winds 20 to 30 knots. heavy
freezing spray. a slight chance of snow showers. waves 3 to
6 feet occasionally to 8 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.tonight...northwest winds 5 to 15 knots backing southwest late.
a slight chance of snow showers. waves subsiding to calm to
2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. a chance of snow. waves calm to 2 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds 20 to 30 knots becoming west gales to
40 knots in the afternoon. waves building to 6 to 9 feet
occasionally to 11 feet. 
.friday night...west gales to 40 knots becoming northwest gales
to 35 knots after midnight. heavy freezing spray. waves building
to 7 to 10 feet occasionally to 13 feet, then subsiding to 3 to
5 feet occasionally to 7 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.sunday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250901
glfls 
expires:202602252100;;220895

open lake forecast for lake superior
national weather service marquette mi
400 am est wed feb 25 2026

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 29.3 inch low over northeastern ontario moves to quebec this 
afternoon with weak ridging building over lake superior at 29.9 
inches tonight into thursday. a strong clipper low averaging 29.1 
inches moves across ontario friday and friday night, sending a 29.5 
inch trough across the lake. a 30.6 inch high builds over the lake 
by sunday.



lsz263-252100-
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 feb 25 2026

...heavy freezing spray warning in effect until 10 am est this
morning...

.early this morning...northwest winds 20 to 30 knots. heavy
freezing spray. a chance of snow showers. waves 5 to 8 feet
occasionally to 10 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray in the morning. a chance of snow
showers. waves subsiding to 2 to 4 feet. 
.tonight...northwest winds 5 to 15 knots backing west late. a
slight chance of snow showers. waves subsiding to calm to 2 feet.
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. a chance of snow. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 1 to 3 feet. 
.friday...southwest winds 20 to 30 knots becoming west gales to
40 knots in the afternoon. waves building to 8 to 11 feet
occasionally to 14 feet. 
.friday night...west gales to 40 knots veering northwest after
midnight. heavy freezing spray. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.saturday...northwest winds 20 to 30 knots becoming north 15 to
25 knots. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.sunday...north winds 10 to 20 knots veering south. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$