fzus63 kdtx 210245
glflh 
expires:202602211045;;989332

open lake forecast for lake huron
national weather service detroit/pontiac mi
945 pm est fri feb 20 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 stalled over lake huron continues to
weaken through the day, with current central pressure currently
around 29.80 inches. light winds and lake effect snow expected
through the weekend, with winds ramping up sunday night into
monday as the low eases into ontario.


lhz361-362-211045-
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-
945 pm est fri feb 20 2026

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


$$

fzus63 kdtx 210245
glflh 
expires:202602211045;;989333

open lake forecast for lake huron
national weather service detroit/pontiac mi
945 pm est fri feb 20 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 stalled over lake huron continues to
weaken through the day, with current central pressure currently
around 29.80 inches. light winds and lake effect snow expected
through the weekend, with winds ramping up sunday night into
monday as the low eases into ontario.


lhz363-462-211045-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
945 pm est fri feb 20 2026

.rest of tonight...west winds 10 to 15 knots. waves 3 to 5 feet. 
.saturday...north winds 10 to 15 knots. a chance of snow in the
morning. waves 3 to 5 feet. 
.saturday night...north winds 5 to 10 knots. a chance of snow.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.sunday...north winds 10 to 15 knots. a chance of snow. waves
3 to 5 feet. 
.sunday night...north winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots after midnight. a chance
of snow in the evening. freezing spray after midnight. waves 5 to
7 feet building to 8 to 12 feet after midnight. waves
occasionally around 15 feet. 
.monday...north winds 20 to 25 knots with gusts to around
30 knots becoming northwest 15 to 20 knots late in the evening.
heavy freezing spray. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.tuesday...northwest winds 5 to 10 knots veering to the east in
the late morning and early afternoon...then becoming south 10 to
15 knots early in the evening increasing to 20 to 25 knots by
midnight. a chance of snow. waves 3 to 5 feet building to 4 to
6 feet by midnight. waves occasionally around 8 feet. 
.wednesday...south winds 20 to 25 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the evening becoming west
20 to 25 knots by midnight. a chance of snow. a chance of rain by
midnight. waves 4 to 6 feet building to 6 to 9 feet by midnight.
waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kmkx 210252
glflm 
expires:202602211030;;989470

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cst fri feb 20 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...

low pressure around 29.6 inches over lake huron will continue to
weaken through this evening. gales remain possible early this 
evening over the southern third of lake michigan, with west to 
northwest winds continuing to gradually subside into tonight.

northwest to north winds will continue across the lake into early
next week as a strong polar high pressure builds southward into 
south central canada. as the high draws closer, the pressure 
gradient will tighten sunday into monday. gales will be possible,
especially sunday afternoon through monday morning. light and 
variable winds are then expected into monday evening as the polar
high weakens and drifts overhead. a modest south breeze develops 
tuesday as weak high pressure drifts east of the region and low 
pressure develops west of the lake. 


lmz261-362-364-366-563-565-211030-
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-
852 pm cst fri feb 20 2026

two rivers wi to manistee mi north...

.rest of tonight...northwest winds to 30 kt diminishing to 15 to
25 kt. snow likely with slight chance of rain through early
evening, then snow likely overnight. waves 6 to 9 ft occasionally
to 12 ft. 
.saturday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
snow likely in the morning, then chance of snow in the afternoon.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.saturday night...north winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow in the evening, then chance of snow showers
overnight. waves 2 to 4 ft building to 4 to 7 ft occasionally to
9 ft. 
.sunday...north winds to 30 kt. chance of snow showers in the
morning. waves 7 to 10 ft occasionally to 13 ft. 
.sunday night...north gales to 35 kt. waves 8 to 12 ft
occasionally to 16 ft. 
.monday...north gales to 35 kt diminishing to 30 kt. waves 8 to
12 ft occasionally to 16 ft subsiding to 7 to 10 ft occasionally
to 13 ft. 
.monday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.tuesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of snow. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...west winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 210252
glflm 
expires:202602211030;;989471

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cst fri feb 20 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...

low pressure around 29.6 inches over lake huron will continue to
weaken through this evening. gales remain possible early this 
evening over the southern third of lake michigan, with west to 
northwest winds continuing to gradually subside into tonight.

northwest to north winds will continue across the lake into early
next week as a strong polar high pressure builds southward into 
south central canada. as the high draws closer, the pressure 
gradient will tighten sunday into monday. gales will be possible,
especially sunday afternoon through monday morning. light and 
variable winds are then expected into monday evening as the polar
high weakens and drifts overhead. a modest south breeze develops 
tuesday as weak high pressure drifts east of the region and low 
pressure develops west of the lake. 


lmz567-669-868-870-211030-
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 pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
852 pm cst fri feb 20 2026

two rivers wi to manistee mi south to port washington wi to
whitehall mi...

...gale warning in effect until 9 pm cst this evening...

.rest of tonight...northwest gales to 35 kt diminishing to 15 to
25 kt. chance of snow through early evening, then slight chance
of snow overnight. waves 8 to 12 ft occasionally to 16 ft
subsiding to 7 to 10 ft occasionally to 13 ft. 
.saturday...northwest winds 10 to 20 kt. slight chance of snow.
waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. 
.saturday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow in the evening, then chance of snow showers
overnight. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.sunday...northwest winds to 30 kt becoming north. chance of snow
showers in the morning. waves 8 to 11 ft occasionally to 14 ft. 
.sunday night...north gales to 35 kt. waves 10 to 14 ft
occasionally to 18 ft. 
.monday...north gales to 35 kt diminishing to 30 kt. waves 10 to
14 ft occasionally to 18 ft. 
.monday night...north winds 10 to 20 kt backing to west 10 to
15 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to
4 ft. 
.tuesday...south winds 15 to 25 kt. chance of snow. waves 3 to
5 ft building to 5 to 8 ft occasionally to 10 ft. 
.wednesday...west winds 10 to 20 kt. chance of rain. waves 4 to
7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmkx 210252
glflm 
expires:202602211030;;989472

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cst fri feb 20 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...

low pressure around 29.6 inches over lake huron will continue to
weaken through this evening. gales remain possible early this 
evening over the southern third of lake michigan, with west to 
northwest winds continuing to gradually subside into tonight.

northwest to north winds will continue across the lake into early
next week as a strong polar high pressure builds southward into 
south central canada. as the high draws closer, the pressure 
gradient will tighten sunday into monday. gales will be possible,
especially sunday afternoon through monday morning. light and 
variable winds are then expected into monday evening as the polar
high weakens and drifts overhead. a modest south breeze develops 
tuesday as weak high pressure drifts east of the region and low 
pressure develops west of the lake. 


lmz080-671-673-675-777-779-872-874-876-878-211030-
lake michigan from michigan city in to st. joseph mi 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 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-
852 pm cst fri feb 20 2026

port washington wi to whitehall mi south...

...gale warning in effect until 10 pm cst this evening...

.rest of tonight...west gales to 35 kt becoming northwest 15 to
25 kt. waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.saturday...northwest winds 10 to 20 kt. waves 5 to 8 ft
occasionally to 10 ft subsiding to 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow in the evening, then chance of snow showers
overnight. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.sunday...northwest winds to 30 kt. chance of snow showers. waves
8 to 11 ft occasionally to 14 ft building to 8 to 12 ft
occasionally to 16 ft. 
.sunday night...north winds to 30 kt increasing to gales to
35 kt. chance of snow. waves 10 to 14 ft occasionally to 18 ft. 
.monday...north gales to 35 kt diminishing to 30 kt. chance of
snow in the morning. waves 12 to 16 ft occasionally to 21 ft. 
.monday night...north winds 10 to 20 kt backing to west 10 to
15 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.tuesday...southwest winds 15 to 25 kt becoming south. waves 3 to
5 ft building to 5 to 8 ft occasionally to 10 ft. 
.wednesday...southwest winds 10 to 20 kt. chance of rain. waves
4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmqt 210301
glfls 
expires:202602210900;;989815

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri feb 20 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 29.6 inch low over lake huron tonight will stall and gradually 
weaken to 30.0 inches by saturday night. meanwhile, 31.2 inch high 
pressure will build over northern saskatchewan. through sunday, the 
low will gradually be absorbed into a 29.1 inch nor'easter off the 
delmarva peninsula as high pressure slides over manitoba at 31.0 
inches, extending 30.7 inch ridging over western lake superior. the 
high weakens slightly to 30.8 inches over northern manitoba by 
monday afternoon before sharply weakening to 30.3 inches over the 
ontario/quebec line tuesday morning. meanwhile, broad 29.8 inch low 
pressure forms over the plains, sending at least one low of around 
29.5 inches through the great lakes basin during the midweek period. 
weak ridging then builds over lake superior at around 29.9 inches 
for thursday.



lsz162-210900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est fri feb 20 2026 /900 pm cst fri feb 20 2026/

.rest of tonight...northwest winds 10 to 20 knots. a slight
chance of snow. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 20 knots. a slight chance of
snow. waves subsiding to calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots by midnight, then becoming northwest 20 to
30 knots late. a slight chance of snow. waves building to 1 to
3 feet. 
.sunday...north winds 15 to 25 knots. a slight chance of snow
showers in the morning. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.sunday night...north winds 15 to 25 knots. a slight chance of.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.monday...north winds 10 to 20 knots becoming east 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of snow showers. waves building
to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots becoming west 10 to
20 knots. snow showers likely, then a chance of snow showers.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 210301
glfls 
expires:202602210900;;989816

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri feb 20 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 29.6 inch low over lake huron tonight will stall and gradually 
weaken to 30.0 inches by saturday night. meanwhile, 31.2 inch high 
pressure will build over northern saskatchewan. through sunday, the 
low will gradually be absorbed into a 29.1 inch nor'easter off the 
delmarva peninsula as high pressure slides over manitoba at 31.0 
inches, extending 30.7 inch ridging over western lake superior. the 
high weakens slightly to 30.8 inches over northern manitoba by 
monday afternoon before sharply weakening to 30.3 inches over the 
ontario/quebec line tuesday morning. meanwhile, broad 29.8 inch low 
pressure forms over the plains, sending at least one low of around 
29.5 inches through the great lakes basin during the midweek period. 
weak ridging then builds over lake superior at around 29.9 inches 
for thursday.



lsz263-210900-
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-
1000 pm est fri feb 20 2026

.rest of tonight...north winds 10 to 20 knots backing northwest
by midnight. snow late in the evening, then a chance of snow
after midnight. waves 3 to 6 feet occasionally to 8 feet
subsiding to 2 to 4 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of snow. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of snow. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday...north winds 15 to 25 knots increasing to gales to
35 knots in the afternoon. a slight chance of snow showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.sunday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. heavy freezing spray and a slight chance
of. a slight chance of. waves building to 6 to 10 feet
occasionally to 13 feet. 
.monday...north winds 20 to 30 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.monday night...east winds 5 to 15 knots becoming southeast 15 to
25 knots after midnight. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots veering west. snow showers
likely, then a chance of snow showers. freezing spray. waves
building to 4 to 8 feet occasionally to 10 feet. 
.wednesday...northwest winds 10 to 20 knots. 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.

$$

fzus63 kmqt 210301
glfls 
expires:202602210900;;989817

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri feb 20 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 29.6 inch low over lake huron tonight will stall and gradually 
weaken to 30.0 inches by saturday night. meanwhile, 31.2 inch high 
pressure will build over northern saskatchewan. through sunday, the 
low will gradually be absorbed into a 29.1 inch nor'easter off the 
delmarva peninsula as high pressure slides over manitoba at 31.0 
inches, extending 30.7 inch ridging over western lake superior. the 
high weakens slightly to 30.8 inches over northern manitoba by 
monday afternoon before sharply weakening to 30.3 inches over the 
ontario/quebec line tuesday morning. meanwhile, broad 29.8 inch low 
pressure forms over the plains, sending at least one low of around 
29.5 inches through the great lakes basin during the midweek period. 
weak ridging then builds over lake superior at around 29.9 inches 
for thursday.



lsz264-210900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est fri feb 20 2026

.rest of tonight...north winds 10 to 20 knots. freezing spray
late in the evening. snow. waves 4 to 7 feet occasionally to
9 feet subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...north winds 5 to 15 knots. snow. waves subsiding to
2 to 4 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of snow. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday...north winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. heavy freezing spray. a slight chance
of snow showers. waves building to 6 to 9 feet occasionally to
11 feet. 
.sunday night...north gales to 35 knots. heavy freezing spray.
waves building to 7 to 11 feet occasionally to 14 feet. 
.monday...north winds 20 to 30 knots diminishing to 10 to
20 knots in the afternoon. heavy freezing spray in the morning.
waves subsiding to 2 to 4 feet. 
.monday night...northeast winds 5 to 15 knots becoming southeast
15 to 25 knots after midnight. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...south winds 15 to 25 knots backing southeast. freezing
spray. snow showers likely. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest winds 15 to 25 knots. 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 210301
glfls 
expires:202602210900;;989818

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri feb 20 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 29.6 inch low over lake huron tonight will stall and gradually 
weaken to 30.0 inches by saturday night. meanwhile, 31.2 inch high 
pressure will build over northern saskatchewan. through sunday, the 
low will gradually be absorbed into a 29.1 inch nor'easter off the 
delmarva peninsula as high pressure slides over manitoba at 31.0 
inches, extending 30.7 inch ridging over western lake superior. the 
high weakens slightly to 30.8 inches over northern manitoba by 
monday afternoon before sharply weakening to 30.3 inches over the 
ontario/quebec line tuesday morning. meanwhile, broad 29.8 inch low 
pressure forms over the plains, sending at least one low of around 
29.5 inches through the great lakes basin during the midweek period. 
weak ridging then builds over lake superior at around 29.9 inches 
for thursday.



lsz265-210900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est fri feb 20 2026

.rest of tonight...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. snow. waves 4 to 7 feet occasionally to
9 feet subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming north 15 to 25 knots by
mid afternoon. snow. waves subsiding to 2 to 4 feet. 
.saturday night...northwest winds 15 to 25 knots increasing to
20 to 30 knots by midnight, then veering north late. snow likely
in the evening, then a chance of snow showers after midnight.
waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...north gales to 40 knots. freezing spray. a chance of
snow showers. waves building to 7 to 10 feet occasionally to
13 feet. 
.sunday night...north gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet. 
.monday...north 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 6 feet occasionally to 8 feet. 
.monday night...north winds 5 to 15 knots becoming south 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots. freezing spray. snow
showers likely. a chance of snow showers. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...west winds 20 to 30 knots veering northwest.
freezing spray. a chance of snow showers. waves building to 4 to
7 feet occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 210301
glfls 
expires:202602210900;;989819

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri feb 20 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 29.6 inch low over lake huron tonight will stall and gradually 
weaken to 30.0 inches by saturday night. meanwhile, 31.2 inch high 
pressure will build over northern saskatchewan. through sunday, the 
low will gradually be absorbed into a 29.1 inch nor'easter off the 
delmarva peninsula as high pressure slides over manitoba at 31.0 
inches, extending 30.7 inch ridging over western lake superior. the 
high weakens slightly to 30.8 inches over northern manitoba by 
monday afternoon before sharply weakening to 30.3 inches over the 
ontario/quebec line tuesday morning. meanwhile, broad 29.8 inch low 
pressure forms over the plains, sending at least one low of around 
29.5 inches through the great lakes basin during the midweek period. 
weak ridging then builds over lake superior at around 29.9 inches 
for thursday.



lsz266-210900-
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-
1000 pm est fri feb 20 2026

.rest of tonight...northeast winds 15 to 25 knots. snow likely,
possibly mixed with rain late in the evening, then a chance of
snow after midnight. waves 4 to 7 feet occasionally to 9 feet
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday...east winds 15 to 25 knots becoming northeast 10 to
20 knots by late morning, then backing north by mid afternoon. a
chance of snow. waves subsiding to 2 to 4 feet. 
.saturday night...north winds 15 to 25 knots. a chance of snow.
waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...north winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. freezing spray. a chance of snow
showers. waves building to 7 to 10 feet occasionally to 13 feet. 
.sunday night...north gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet. 
.monday...north gales to 35 knots diminishing to 15 to 25 knots
in the afternoon. heavy freezing spray. a chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...north winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.tuesday...southeast winds 20 to 30 knots. heavy freezing spray.
snow showers likely. a chance of snow showers. waves building to
7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest winds 20 to 30 knots. freezing spray. a
chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 210301
glfls 
expires:202602210900;;989820

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri feb 20 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 29.6 inch low over lake huron tonight will stall and gradually 
weaken to 30.0 inches by saturday night. meanwhile, 31.2 inch high 
pressure will build over northern saskatchewan. through sunday, the 
low will gradually be absorbed into a 29.1 inch nor'easter off the 
delmarva peninsula as high pressure slides over manitoba at 31.0 
inches, extending 30.7 inch ridging over western lake superior. the 
high weakens slightly to 30.8 inches over northern manitoba by 
monday afternoon before sharply weakening to 30.3 inches over the 
ontario/quebec line tuesday morning. meanwhile, broad 29.8 inch low 
pressure forms over the plains, sending at least one low of around 
29.5 inches through the great lakes basin during the midweek period. 
weak ridging then builds over lake superior at around 29.9 inches 
for thursday.



lsz267-210900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est fri feb 20 2026

.rest of tonight...northeast winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. a slight chance of snow. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.saturday...east winds 10 to 20 knots diminishing to 5 to
15 knots by late morning, then backing northeast by mid
afternoon. a slight chance of snow. waves subsiding to calm to
2 feet. 
.saturday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots by midnight. a slight chance of snow. waves
building to 1 to 3 feet. 
.sunday...north winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. a slight chance of snow showers. waves building
to 4 to 7 feet occasionally to 9 feet. 
.sunday night...north gales to 35 knots. heavy freezing spray and
a slight chance of. a slight chance of. waves building to 6 to
9 feet occasionally to 11 feet. 
.monday...north winds 20 to 30 knots. heavy freezing spray in the
morning. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 10 to 20 knots veering east after
midnight. waves subsiding to 1 to 3 feet. 
.tuesday...southeast winds 15 to 25 knots increasing to 20 to
30 knots. heavy freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...southeast winds 20 to 30 knots veering northwest.
freezing spray. a chance of snow showers. waves building to 6 to
9 feet occasionally to 11 feet. 

note, wave height forecasts are for ice free areas.

$$