fzus63 kdtx 240825
glflh 
expires:202602241630;;164637

open lake forecast for lake huron
national weather service detroit/pontiac mi
325 am est tue feb 24 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...high pressure, 30.10 inches, this morning drifts east
as the next clipper system tracks across lake superior today.
widespread snow and southerly flow gusting to 30 knots will be
possible before the system departs late tonight.


lhz361-362-241630-
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-
325 am est tue feb 24 2026

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

wave heights are for ice free areas.

$$

fzus63 kdtx 240825
glflh 
expires:202602241630;;164638

open lake forecast for lake huron
national weather service detroit/pontiac mi
325 am est tue feb 24 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...high pressure, 30.10 inches, this morning drifts east
as the next clipper system tracks across lake superior today.
widespread snow and southerly flow gusting to 30 knots will be
possible before the system departs late tonight.


lhz363-462-241630-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
325 am est tue feb 24 2026

.today...west winds 5 to 10 knots backing to the south late in
the morning...then increasing to 10 to 15 knots early in the
afternoon increasing to 15 to 20 knots late in the afternoon. a
chance of snow showers in the afternoon. snow may be heavy at
times in the afternoon. waves 3 to 5 feet subsiding to 1 to
3 feet late in the morning...then building to 3 to 5 feet in the
afternoon. 
.tonight...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots after midnight. snow
showers in the evening...then a chance of snow showers after
midnight. waves 6 to 9 feet. waves occasionally around 12 feet. 
.wednesday...west winds 15 to 20 knots. a chance of snow showers.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.wednesday night...west winds 15 to 20 knots becoming northwest
5 to 10 knots. waves 5 to 7 feet. waves occasionally around
10 feet. 
.thursday...west winds 5 to 10 knots backing to the south late in
the afternoon...then increasing to 10 to 15 knots late in the
evening. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...southwest winds 10 to 15 knots becoming south 20 to
25 knots with gusts to around 30 knots. waves 2 to 4 feet
building to 6 to 9 feet. waves occasionally around 12 feet. 
.saturday...west winds 20 to 25 knots becoming northwest 15 to
20 knots until early evening...then increasing to 20 to 25 knots
by midnight. waves 8 to 12 feet. waves occasionally around
15 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 241402
glflm 
expires:202602242230;;177075

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
802 am cst tue feb 24 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...

south gales are expected to develop later this morning and become
southwest in the afternoon for all of lake michigan as 
strengthening low pressure around 29.4 inches tracks from 
northern minnesota today through the northern great lakes tonight,
while deepening to 29.2 inches. a gale warning is in effect from
mid-morning today through the late afternoon.

winds will shift more west northwest behind the low and 
associated cold front for tonight and wednesday. winds will 
remain brisk but under gale force. high pressure around 30.1 
inches will then move into the region wednesday night into 
thursday, bringing lighter winds. gusty south to southwest winds 
are then anticipated for friday.


lmz261-362-364-366-563-565-567-868-242230-
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-
802 am cst tue feb 24 2026

sheboygan wi to pentwater mi north...

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

.rest of today...south winds to 30 kt increasing to gales to
35 kt late this morning, then increasing to gales to 40 kt early
this afternoon becoming southwest gales to 35 kt late. chance of
flurries this morning, then snow this afternoon. waves 4 to 7 ft
occasionally to 9 ft building to 10 to 14 ft occasionally to
18 ft. 
.tonight...west winds to 30 kt becoming northwest. freezing spray
overnight. waves 8 to 12 ft occasionally to 16 ft subsiding to
7 to 10 ft occasionally to 13 ft. 
.wednesday...northwest winds to 30 kt diminishing to 10 to 20 kt.
freezing spray in the morning. waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.wednesday night...northwest winds 10 to 20 kt diminishing to
10 to 15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 to 2 ft. 
.thursday night...southwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.friday...southwest winds to 30 kt. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday...northwest winds to 30 kt diminishing to 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 241402
glflm 
expires:202602242230;;177076

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
802 am cst tue feb 24 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...

south gales are expected to develop later this morning and become
southwest in the afternoon for all of lake michigan as 
strengthening low pressure around 29.4 inches tracks from 
northern minnesota today through the northern great lakes tonight,
while deepening to 29.2 inches. a gale warning is in effect from
mid-morning today through the late afternoon.

winds will shift more west northwest behind the low and 
associated cold front for tonight and wednesday. winds will 
remain brisk but under gale force. high pressure around 30.1 
inches will then move into the region wednesday night into 
thursday, bringing lighter winds. gusty south to southwest winds 
are then anticipated for friday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-242230-
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-
802 am cst tue feb 24 2026

sheboygan wi to pentwater mi south...

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

.rest of today...south winds to 30 kt increasing to gales to
40 kt, then becoming southwest gales to 35 kt late. chance of
snow this afternoon. waves 4 to 7 ft occasionally to 9 ft
building to 10 to 14 ft occasionally to 18 ft. 
.tonight...west winds to 30 kt becoming northwest. chance of snow
in the evening. waves 8 to 12 ft occasionally to 16 ft subsiding
to 8 to 11 ft occasionally to 14 ft. 
.wednesday...northwest winds to 30 kt diminishing to 10 to 20 kt.
freezing spray in the morning. waves 8 to 11 ft occasionally to
14 ft subsiding to 6 to 9 ft occasionally to 12 ft. 
.wednesday night...northwest winds 10 to 15 kt becoming north.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.thursday...southeast winds 5 to 10 kt veering to southwest.
waves 1 to 2 ft. 
.thursday night...southwest winds 10 to 20 kt. waves 1 to 3 ft
building to 2 to 4 ft. 
.friday...southwest winds to 30 kt. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday...northwest winds 15 to 25 kt becoming north. chance of
snow. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 240901
glfls 
expires:202602242100;;165865

open lake forecast for lake superior
national weather service marquette mi
400 am est tue feb 24 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 low pressure system strengthening to 29.3 inches will move from 
northern mn across lake superior though tonight. weak ridging then 
builds over lake superior at 29.9 inches wednesday night into 
thursday. a strong clipper averaging 29.2 inches moves across 
ontario friday night into saturday, sending a strong cold front 
across the lake with a 30.7 inch high building over the lake by 
sunday.



lsz264-242100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est tue feb 24 2026

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

.early this morning...south winds 20 to 30 knots. heavy freezing
spray. a slight chance of snow showers. waves 3 to 6 feet
occasionally to 8 feet building to 4 to 7 feet occasionally to
9 feet. 
.today...south gales to 35 knots becoming west 15 to 25 knots by
mid afternoon. heavy freezing spray. snow in the morning. a
chance of snow in the afternoon. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tonight...northwest winds 15 to 25 knots increasing to gales to
35 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. heavy freezing spray in the morning. a
chance of snow showers. waves subsiding to 2 to 4 feet. 
.wednesday night...northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...southwest gales to 40 knots becoming northwest gales to
45 knots. heavy freezing spray. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 11 to 15 feet
occasionally to 19 feet. 
.saturday...northwest gales to 40 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 240901
glfls 
expires:202602242100;;165866

open lake forecast for lake superior
national weather service marquette mi
400 am est tue feb 24 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 low pressure system strengthening to 29.3 inches will move from 
northern mn across lake superior though tonight. weak ridging then 
builds over lake superior at 29.9 inches wednesday night into 
thursday. a strong clipper averaging 29.2 inches moves across 
ontario friday night into saturday, sending a strong cold front 
across the lake with a 30.7 inch high building over the lake by 
sunday.



lsz265-242100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est tue feb 24 2026

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

.early this morning...south winds 20 to 30 knots. waves 2 to
4 feet building to 3 to 5 feet occasionally to 7 feet. 
.today...south gales to 35 knots becoming southwest 20 to
30 knots by mid afternoon. heavy freezing spray. snow in the
morning. a chance of snow in the afternoon. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 2 to
4 feet. 
.tonight...west winds 20 to 30 knots becoming northwest gales to
40 knots by midnight. a chance of snow showers. heavy freezing
spray after midnight. waves subsiding to 1 to 3 feet, then
building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. heavy freezing spray in the morning. a
chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...west winds 10 to 20 knots. a slight chance of
snow showers in the evening. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots. 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 gales to 40 knots becoming west gales to
45 knots. heavy freezing spray. waves building to 8 to 12 feet
occasionally to 15 feet. 
.saturday...northwest gales to 40 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 240901
glfls 
expires:202602242100;;165867

open lake forecast for lake superior
national weather service marquette mi
400 am est tue feb 24 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 low pressure system strengthening to 29.3 inches will move from 
northern mn across lake superior though tonight. weak ridging then 
builds over lake superior at 29.9 inches wednesday night into 
thursday. a strong clipper averaging 29.2 inches moves across 
ontario friday night into saturday, sending a strong cold front 
across the lake with a 30.7 inch high building over the lake by 
sunday.



lsz266-242100-
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 tue feb 24 2026

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

.early this morning...south winds 20 to 30 knots. heavy freezing
spray. waves 2 to 4 feet building to 3 to 5 feet occasionally to
7 feet. 
.today...south gales to 40 knots. heavy freezing spray. snow.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 6 to 9 feet occasionally to 11 feet. 
.tonight...west winds 15 to 25 knots becoming northwest gales to
35 knots by midnight. freezing spray. a chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 9 to 12 feet occasionally to 15 feet. 
.wednesday...northwest gales to 35 knots diminishing to 20 to
30 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.wednesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. freezing spray in the evening. a
slight chance of snow showers in the evening. waves subsiding to
1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 
.thursday night...southwest winds 15 to 25 knots. waves building
to 3 to 5 feet occasionally to 7 feet. 
.friday...south gales to 40 knots becoming west storm force winds
to 50 knots. heavy freezing spray. waves building to 15 to
20 feet occasionally to 25 feet. 
.saturday...northwest gales to 40 knots diminishing to 20 to
30 knots. heavy freezing spray. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 240901
glfls 
expires:202602242100;;165868

open lake forecast for lake superior
national weather service marquette mi
400 am est tue feb 24 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 low pressure system strengthening to 29.3 inches will move from 
northern mn across lake superior though tonight. weak ridging then 
builds over lake superior at 29.9 inches wednesday night into 
thursday. a strong clipper averaging 29.2 inches moves across 
ontario friday night into saturday, sending a strong cold front 
across the lake with a 30.7 inch high building over the lake by 
sunday.



lsz267-242100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est tue feb 24 2026

...heavy freezing spray warning in effect from 9 am est this
morning through this evening...
...gale warning in effect from 10 am est this morning through
this evening...

.early this morning...southeast winds 15 to 25 knots. waves calm
to 2 feet building to 1 to 3 feet. 
.today...southeast gales to 40 knots becoming south gales to
35 knots by mid afternoon. heavy freezing spray. a chance of snow
in the morning. snow in the afternoon. waves building to 6 to
10 feet occasionally to 13 feet. 
.tonight...south winds 20 to 30 knots veering west by midnight,
then veering northwest late. freezing spray. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 8 to 11 feet occasionally to 14 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots by late morning, then diminishing to 20 to 30 knots
by mid afternoon. freezing spray. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.wednesday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. freezing spray in the evening. a
slight chance of snow showers in the evening. waves subsiding to
1 to 3 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.thursday night...south winds 15 to 25 knots veering southwest
after midnight. waves building to 3 to 5 feet occasionally to
7 feet. 
.friday...south gales to 40 knots becoming west gales to
45 knots. a chance of snow showers, possibly mixed with rain.
heavy freezing spray. waves building to 17 to 22 feet
occasionally to 28 feet. 
.saturday...northwest gales to 40 knots becoming north 15 to
25 knots. heavy freezing spray. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 240901
glfls 
expires:202602242100;;165863

open lake forecast for lake superior
national weather service marquette mi
400 am est tue feb 24 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 low pressure system strengthening to 29.3 inches will move from 
northern mn across lake superior though tonight. weak ridging then 
builds over lake superior at 29.9 inches wednesday night into 
thursday. a strong clipper averaging 29.2 inches moves across 
ontario friday night into saturday, sending a strong cold front 
across the lake with a 30.7 inch high building over the lake by 
sunday.



lsz162-242100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est tue feb 24 2026 /300 am cst tue feb 24 2026/

.early this morning...south winds 20 to 30 knots. a chance of
snow showers. waves 3 to 6 feet occasionally to 8 feet. 
.today...south winds to 30 knots with a few gale force gusts to
35 knots possible becoming southwest 20 to 30 knots by late
morning, then veering west by mid afternoon. freezing spray in
the morning. snow in the morning, then a chance of snow in the
afternoon. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 2 to 4 feet. 
.tonight...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by midnight,
then diminishing to 20 to 30 knots late. a slight chance of snow
showers in the evening. heavy freezing spray. waves building to
3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots backing west
after midnight. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. 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 2 to 4 feet. 
.friday...southwest gales to 40 knots veering northwest. heavy
freezing spray. waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 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 240901
glfls 
expires:202602242100;;165864

open lake forecast for lake superior
national weather service marquette mi
400 am est tue feb 24 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 low pressure system strengthening to 29.3 inches will move from 
northern mn across lake superior though tonight. weak ridging then 
builds over lake superior at 29.9 inches wednesday night into 
thursday. a strong clipper averaging 29.2 inches moves across 
ontario friday night into saturday, sending a strong cold front 
across the lake with a 30.7 inch high building over the lake by 
sunday.



lsz263-242100-
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 tue feb 24 2026

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

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

note, wave height forecasts are for ice free areas.

$$