fzus63 kdtx 212110
glflh 
expires:202601220515;;289102

open lake forecast for lake huron
national weather service detroit/pontiac mi
410 pm est wed jan 21 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...low pressure, 29.70 inches, will exit from the
northern great lakes to quebec by tomorrow morning. this will
draw a strong arctic cold front across the great lakes thursday
and friday. expect elevated winds/waves, freezing spray, and
additional periods of snowfall including snow squalls.


lhz361-220515-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
410 pm est wed jan 21 2026

...heavy freezing spray warning in effect from thursday morning
through late friday night...

.tonight...southwest winds 10 to 15 knots becoming west 20 to
25 knots with gusts to around 30 knots. a chance of snow showers.
freezing spray after midnight. waves 1 to 3 feet building to 6 to
9 feet. waves occasionally around 12 feet. 
.thursday...west winds 20 to 25 knots increasing to 30 knots
early in the afternoon...then decreasing to 20 to 25 knots late
in the afternoon. heavy freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday night...west winds 20 to 25 knots with gusts to around
30 knots. heavy freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.friday...northwest winds 15 to 20 knots. heavy freezing spray in
the morning. waves 5 to 7 feet. waves occasionally around
10 feet. 
.friday night...northwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. waves 3 to
5 feet. 
.saturday...west winds 5 to 10 knots backing to the southeast
late in the evening. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet. 
.monday...north winds 10 to 15 knots backing to the northwest in
the late morning and early afternoon...then becoming west 15 to
20 knots . waves 2 to 4 feet building to 3 to 5 feet . 


$$

fzus63 kdtx 212110
glflh 
expires:202601220515;;289103

open lake forecast for lake huron
national weather service detroit/pontiac mi
410 pm est wed jan 21 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...low pressure, 29.70 inches, will exit from the
northern great lakes to quebec by tomorrow morning. this will
draw a strong arctic cold front across the great lakes thursday
and friday. expect elevated winds/waves, freezing spray, and
additional periods of snowfall including snow squalls.


lhz362-363-220515-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
410 pm est wed jan 21 2026

...heavy freezing spray warning in effect from thursday morning
through late friday night...

.tonight...southwest winds 10 to 15 knots becoming west 20 to
25 knots. a chance of snow showers. waves 4 to 6 feet building to
6 to 9 feet early in the morning. waves occasionally around
12 feet. 
.thursday...west winds 20 to 25 knots increasing to 30 knots
early in the afternoon...then decreasing to 20 to 25 knots late
in the afternoon. freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday night...west winds 20 to 25 knots with gusts to around
30 knots. a chance of snow showers. heavy freezing spray. waves
10 to 14 feet. waves occasionally around 18 feet. 
.friday...northwest winds 20 to 25 knots. gusts to 30 knots early
in the morning. heavy freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.friday night...west winds 20 to 25 knots decreasing to 10 to
15 knots. heavy freezing spray in the evening. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.saturday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then veering to the northeast late in the
evening. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon. 
.sunday...east winds 10 to 15 knots backing to the northeast by
midnight. a chance of snow early in the morning. waves 3 to
5 feet. 
.monday...north winds 15 to 20 knots backing to the west . waves
4 to 6 feet. waves occasionally around 8 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 212110
glflh 
expires:202601220515;;289104

open lake forecast for lake huron
national weather service detroit/pontiac mi
410 pm est wed jan 21 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...low pressure, 29.70 inches, will exit from the
northern great lakes to quebec by tomorrow morning. this will
draw a strong arctic cold front across the great lakes thursday
and friday. expect elevated winds/waves, freezing spray, and
additional periods of snowfall including snow squalls.


lhz462>464-220515-
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-
410 pm est wed jan 21 2026

...heavy freezing spray warning in effect from thursday morning
through late friday night...

.tonight...southwest winds 15 to 20 knots. a chance of snow
showers. waves 4 to 6 feet. waves occasionally around 8 feet. 
.thursday...west winds 20 to 25 knots with gusts to 35 knot
gales. freezing spray. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.thursday night...west winds 20 to 25 knots with isolated gusts 
to 35 knot gales. a chance of snow showers. heavy freezing spray. 
waves 6 to 9 feet. waves occasionally around 12 feet. 
.friday...west winds 20 to 25 knots. gusts to 30 knots until late
afternoon. heavy freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.friday night...west winds 15 to 20 knots. heavy freezing spray
in the evening. waves 6 to 9 feet. waves occasionally around
12 feet. 
.saturday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then backing to the southwest late in the
afternoon becoming southeast 10 to 15 knots late in the evening.
waves 3 to 5 feet subsiding to 1 to 3 feet late in the afternoon.
.sunday...east winds 10 to 15 knots backing to the northeast by
midnight. a chance of snow. waves 2 to 4 feet. 
.monday...north winds 15 to 20 knots backing to the west. waves
4 to 6 feet. waves occasionally around 8 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 211959
glflm 
expires:202601220445;;284896

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
159 pm cst wed jan 21 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...

changes to the headlines: expanded gale warning slightly northward
and delayed the start and end times. 

low pressure of 29.6 inches will cross lake superior this evening.
an arctic front will surge through wisconsin and across lake
michigan overnight. gale force gusts are expected over the 
southern two thirds of lake michigan, where a gale warning is in 
effect from mid evening through mid thursday morning. gusty 
westerly winds will gradually diminish friday afternoon and night
as strong high pressure around 31.0 inches over the northern 
plains expands into the upper midwest. 

arriving arctic air and elevated wave heights will support 
periods of heavy freezing spray tonight into friday night. a 
heavy freezing spray warning is in effect for this period. 

the high will expand across the great lakes over the weekend 
while weakening to 30.5 inches. a weak trough around 30.2 inches 
will cross lake superior sunday. the strong high of 30.7 inches 
over the northern plains will drop into the central plains at
around 30.5 inches on monday. a low pressure trough averaging 29.8
inches will sweep across the upper great lakes monday afternoon
and night.


lmz080-567-669-671-673-675-777-779-868-870-872-874-876-878-220445-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from two rivers to sheboygan wi 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 pentwater to manistee mi 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-
159 pm cst wed jan 21 2026

two rivers wi to manistee mi south...

...gale warning in effect from 9 pm cst this evening through
thursday morning...
...heavy freezing spray warning in effect from 9 pm cst this
evening through late friday night...

.tonight...west winds to 30 kt increasing to gales to 35 kt. 
chance of snow showers. freezing spray overnight. waves 7 to 10 ft
occasionally to 13 ft building to 8 to 12 ft occasionally to 16 
ft. 
.thursday...west winds to 30 kt. freezing spray. chance of
snow showers. waves 8 to 11 ft occasionally to 14 ft subsiding to
7 to 10 ft occasionally to 13 ft. 
.thursday night...west gales to 35 kt becoming northwest. chance
of snow showers. heavy freezing spray. waves 10 to 14 ft 
occasionally to 18 ft. 
.friday...northwest gales to 35 kt diminishing to 30 kt. heavy
freezing spray. chance of snow. waves 8 to 12 ft occasionally to
16 ft subsiding to 8 to 11 ft occasionally to 14 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. heavy freezing spray in the evening. 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 10 to 15 kt. chance of snow. waves
3 to 5 ft. 
.saturday night...west winds 10 to 15 kt backing to south. chance
of snow. waves 3 to 5 ft. 
.sunday...east winds 10 to 15 kt backing to northwest. chance of
snow. waves 3 to 5 ft. 
.monday...west winds 10 to 20 kt increasing to 15 to 25 kt.
freezing spray. waves 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 211959
glflm 
expires:202601220445;;284895

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
159 pm cst wed jan 21 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...

changes to the headlines: expanded gale warning slightly northward
and delayed the start and end times. 

low pressure of 29.6 inches will cross lake superior this evening.
an arctic front will surge through wisconsin and across lake
michigan overnight. gale force gusts are expected over the 
southern two thirds of lake michigan, where a gale warning is in 
effect from mid evening through mid thursday morning. gusty 
westerly winds will gradually diminish friday afternoon and night
as strong high pressure around 31.0 inches over the northern 
plains expands into the upper midwest. 

arriving arctic air and elevated wave heights will support 
periods of heavy freezing spray tonight into friday night. a 
heavy freezing spray warning is in effect for this period. 

the high will expand across the great lakes over the weekend 
while weakening to 30.5 inches. a weak trough around 30.2 inches 
will cross lake superior sunday. the strong high of 30.7 inches 
over the northern plains will drop into the central plains at
around 30.5 inches on monday. a low pressure trough averaging 29.8
inches will sweep across the upper great lakes monday afternoon
and night.


lmz261-362-364-366-563-565-220445-
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-
159 pm cst wed jan 21 2026

two rivers wi to manistee mi north...

...heavy freezing spray warning in effect from 9 pm cst this
evening through late friday night...

.tonight...west winds to 30 kt. a few gale force gusts possible. 
chance of snow this evening. heavy freezing spray. waves 4 to 6 ft
occasionally to 8 ft building to 6 to 9 ft occasionally to 12 ft.
.thursday...west winds to 30 kt. a few gale force gusts possible.
heavy freezing spray. chance of snow showers. waves 6 to 9 ft 
occasionally to 12 ft.
.thursday night...west winds to 30 kt becoming northwest. a few
gale force gusts possible. chance of snow showers. heavy freezing
spray. waves 8 to 11 ft occasionally to 14 ft. 
.friday...northwest winds to 30 kt. chance of snow in the 
morning. heavy freezing spray. waves 7 to 10 ft occasionally to 13
ft subsiding to 5 to 8 ft occasionally to 10 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.saturday...west winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...west winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 to 3 ft. 
.sunday...west winds 10 to 15 kt. waves 1 to 3 ft. 
.monday...west winds 15 to 25 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 212101
glfls 
expires:202601220900;;287941

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed jan 21 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 29.7 inch low over eastern lake superior will deepen to 29.6 
inches as it moves east through ontario and into quebec by thursday 
morning. in the wake of the low, a 31.0 inch high pressure will be 
over saskatchewan, shifting over the dakotas friday and 
overspreading the upper midwest at around 30.7 inches saturday. 
remnant ridging of at least 30.3 inches remains over lake superior 
through sunday. a 29.8 inch trough will approach the lake on monday 
afternoon as the high pressure slides south and east, away from the 
area.



lsz266-220900-
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 wed jan 21 2026

...heavy freezing spray warning in effect from 1 am est thursday
through saturday morning...
...gale warning in effect from thursday morning through friday
afternoon...

.late this afternoon...west winds 15 to 25 knots. snow showers
likely. waves 2 to 4 feet building to 3 to 5 feet occasionally to
7 feet. 
.tonight...west winds 20 to 30 knots becoming northwest gales to
35 knots by midnight. heavy freezing spray. snow showers likely.
waves building to 6 to 10 feet occasionally to 13 feet. 
.thursday...northwest gales to 40 knots. heavy freezing spray.
snow showers. waves building to 7 to 11 feet occasionally to
14 feet. 
.thursday night...northwest gales to 40 knots. patchy fog in the
evening. heavy freezing spray. snow showers. waves building to
10 to 14 feet occasionally to 18 feet. 
.friday...northwest gales to 40 knots. heavy freezing spray. snow
showers. waves subsiding to 7 to 10 feet occasionally to 13 feet.
.friday night...northwest winds 20 to 30 knots. heavy freezing
spray. snow showers likely. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...northwest winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots backing southwest
after midnight. a chance of snow showers. waves 1 to 3 feet. 
.sunday...west winds 10 to 20 knots becoming northwest 15 to
25 knots. a chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...northwest winds 20 to 30 knots backing west. freezing
spray. a chance of snow showers. waves building to 4 to 8 feet
occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 212101
glfls 
expires:202601220900;;287942

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed jan 21 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 29.7 inch low over eastern lake superior will deepen to 29.6 
inches as it moves east through ontario and into quebec by thursday 
morning. in the wake of the low, a 31.0 inch high pressure will be 
over saskatchewan, shifting over the dakotas friday and 
overspreading the upper midwest at around 30.7 inches saturday. 
remnant ridging of at least 30.3 inches remains over lake superior 
through sunday. a 29.8 inch trough will approach the lake on monday 
afternoon as the high pressure slides south and east, away from the 
area.



lsz267-220900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est wed jan 21 2026

...heavy freezing spray warning in effect from 1 am est thursday
through saturday morning...
...gale warning in effect from thursday morning through friday
afternoon...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 212101
glfls 
expires:202601220900;;287937

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed jan 21 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 29.7 inch low over eastern lake superior will deepen to 29.6 
inches as it moves east through ontario and into quebec by thursday 
morning. in the wake of the low, a 31.0 inch high pressure will be 
over saskatchewan, shifting over the dakotas friday and 
overspreading the upper midwest at around 30.7 inches saturday. 
remnant ridging of at least 30.3 inches remains over lake superior 
through sunday. a 29.8 inch trough will approach the lake on monday 
afternoon as the high pressure slides south and east, away from the 
area.



lsz162-220900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est wed jan 21 2026 /300 pm cst wed jan 21 2026/

...heavy freezing spray warning in effect from 1 am est /midnight
cst/ thursday through friday afternoon...

.late this afternoon...northwest winds 15 to 25 knots. a slight
chance of snow showers. waves 2 to 4 feet. 
.tonight...northwest winds 20 to 30 knots. a slight chance of
snow showers. heavy freezing spray after midnight. waves building
to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 15 to 25 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible. a slight chance
of snow showers. heavy freezing spray and patchy dense fog in the
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 5 to 8 feet occasionally to 10 feet. 
.thursday night...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots
late. patchy fog in the evening. heavy freezing spray. a chance
of snow showers. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.friday...northwest winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 2 to 4 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of snow showers. waves
subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.monday...west winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 212101
glfls 
expires:202601220900;;287938

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed jan 21 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 29.7 inch low over eastern lake superior will deepen to 29.6 
inches as it moves east through ontario and into quebec by thursday 
morning. in the wake of the low, a 31.0 inch high pressure will be 
over saskatchewan, shifting over the dakotas friday and 
overspreading the upper midwest at around 30.7 inches saturday. 
remnant ridging of at least 30.3 inches remains over lake superior 
through sunday. a 29.8 inch trough will approach the lake on monday 
afternoon as the high pressure slides south and east, away from the 
area.



lsz263-220900-
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 wed jan 21 2026

...heavy freezing spray warning in effect through friday
evening...

.late this afternoon...northwest winds 15 to 25 knots. freezing
spray. a chance of snow showers. waves 3 to 6 feet occasionally
to 8 feet. 
.tonight...northwest winds 20 to 30 knots. heavy freezing spray.
a chance of snow showers. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...northwest winds 20 to 30 knots. heavy freezing spray.
patchy dense fog in the afternoon. a chance of snow showers.
waves building to 5 to 9 feet occasionally to 11 feet. 
.thursday night...northwest winds 20 to 30 knots. areas of dense
fog in the evening. heavy freezing spray. snow showers likely in
the evening. a chance of snow showers after midnight. waves
building to 6 to 10 feet occasionally to 13 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 15 knots. a chance of snow showers.
waves subsiding to calm to 2 feet. 
.saturday night...west winds 5 to 15 knots backing southwest
after midnight. a chance of snow showers in the evening. waves
calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...west winds 20 to 30 knots. heavy freezing spray. waves
building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 212101
glfls 
expires:202601220900;;287939

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed jan 21 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 29.7 inch low over eastern lake superior will deepen to 29.6 
inches as it moves east through ontario and into quebec by thursday 
morning. in the wake of the low, a 31.0 inch high pressure will be 
over saskatchewan, shifting over the dakotas friday and 
overspreading the upper midwest at around 30.7 inches saturday. 
remnant ridging of at least 30.3 inches remains over lake superior 
through sunday. a 29.8 inch trough will approach the lake on monday 
afternoon as the high pressure slides south and east, away from the 
area.



lsz264-220900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est wed jan 21 2026

...heavy freezing spray warning in effect through late friday
night...

.late this afternoon...northwest winds 10 to 20 knots. snow
showers likely. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots increasing to 20 to
30 knots late. heavy freezing spray. a chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet. 
.thursday...northwest winds 20 to 30 knots. heavy freezing spray.
a chance of snow showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.thursday night...northwest winds 20 to 30 knots. areas of dense
fog in the evening. heavy freezing spray. snow showers likely.
waves building to 7 to 10 feet occasionally to 13 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray. snow showers
likely in the morning. a chance of snow showers in the afternoon.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. heavy freezing spray in the
evening. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.saturday...northwest winds 5 to 15 knots backing west in the
afternoon. a chance of snow showers. waves subsiding to calm to
2 feet. 
.saturday night...west winds 5 to 15 knots. a chance of snow
showers in the evening. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet. 
.monday...west winds 20 to 30 knots. freezing spray. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 212101
glfls 
expires:202601220900;;287940

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed jan 21 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 29.7 inch low over eastern lake superior will deepen to 29.6 
inches as it moves east through ontario and into quebec by thursday 
morning. in the wake of the low, a 31.0 inch high pressure will be 
over saskatchewan, shifting over the dakotas friday and 
overspreading the upper midwest at around 30.7 inches saturday. 
remnant ridging of at least 30.3 inches remains over lake superior 
through sunday. a 29.8 inch trough will approach the lake on monday 
afternoon as the high pressure slides south and east, away from the 
area.



lsz265-220900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est wed jan 21 2026

...heavy freezing spray warning in effect from 1 am est thursday
through late friday night...
...gale warning in effect from thursday morning through friday
afternoon...

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

note, wave height forecasts are for ice free areas.

$$