fzus61 kbuf 121502
glflo 
expires:202602122200;;512908

open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu feb 12 2026

for waters beyond five nautical miles of shore on lake ontario

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 30.4 inch high over the mid mississippi valley will 
slowly move across the ohio valley through tonight, reaching the 
carolinas friday. meanwhile, a 29.7 inch area of low pressure over 
central quebec friday will move southeast across new england 
saturday and off the coast saturday night. a 30.3 inch high will 
build southeast into the ottawa valley saturday, then into new 
england sunday. following a weak cold frontal passage sunday night, 
another area of high pressure will build across the lake monday, 
averaging 30.2 inches.


loz062-063-122200-
lake ontario open waters from the niagara river to sodus bay-
1002 am est thu feb 12 2026

.this afternoon...northwest winds 10 to 15 knots. a chance of snow
showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.friday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.friday night...southwest winds 15 to 25 knots becoming west. a
chance of snow showers. waves 3 to 6 feet. 
.saturday...west winds 15 to 20 knots becoming south 5 to
15 knots. waves 3 to 5 feet subsiding to 1 foot or less. 
.sunday...southeast winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.monday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 

$$

fzus61 kbuf 121502
glflo 
expires:202602122200;;512909

open lake forecast for lake ontario
national weather service buffalo ny
1002 am est thu feb 12 2026

for waters beyond five nautical miles of shore on lake ontario

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 30.4 inch high over the mid mississippi valley will 
slowly move across the ohio valley through tonight, reaching the 
carolinas friday. meanwhile, a 29.7 inch area of low pressure over 
central quebec friday will move southeast across new england 
saturday and off the coast saturday night. a 30.3 inch high will 
build southeast into the ottawa valley saturday, then into new 
england sunday. following a weak cold frontal passage sunday night, 
another area of high pressure will build across the lake monday, 
averaging 30.2 inches.


loz064-065-122200-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 am est thu feb 12 2026

.this afternoon...northwest winds 10 to 15 knots. waves 1 to
3 feet. 
.tonight...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming southwest. waves
1 to 3 feet building to 2 to 4 feet. 
.friday night...southwest winds 15 to 20 knots becoming west.
snow showers likely. waves 2 to 4 feet building to 3 to 6 feet. 
.saturday...northwest winds 5 to 15 knots becoming south. waves
3 to 5 feet subsiding to 1 foot or less. 
.sunday...southeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south. waves
1 foot or less. 

$$

fzus61 kcle 121610
glfle 
expires:202602122115;;515390

open lake forecast for lake erie
national weather service cleveland oh
1110 am est thu feb 12 2026

for waters beyond five nautical miles of shore on lake erie

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 trough averaging 30.20 inches will then linger across lake erie
this morning. high pressure 30.40 inches will build into the ohio
valley later today and linger into the weekend. low pressure 
29.70 inches tracks across the mid south on sunday, followed by 
high pressure 30.10 inches building into the region on monday.


lez061-165>169-122115-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
1110 am est thu feb 12 2026

.rest of today...northwest winds 10 to 15 knots. a chance of snow
showers late this morning, then a chance of flurries this
afternoon. the lake is mostly ice covered.
.tonight...west winds 10 knots or less. 
.friday...southwest winds 5 to 15 knots. 
.friday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. 
.saturday...west winds 10 knots or less becoming south. 
.sunday...southeast winds 5 to 10 knots becoming west. 
.monday...west winds 10 knots or less becoming south. 

waves omitted due to the lake being mostly ice covered.

$$

fzus61 kcle 121610
glfle 
expires:202602122115;;515389

open lake forecast for lake erie
national weather service cleveland oh
1110 am est thu feb 12 2026

for waters beyond five nautical miles of shore on lake erie

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 trough averaging 30.20 inches will then linger across lake erie
this morning. high pressure 30.40 inches will build into the ohio
valley later today and linger into the weekend. low pressure 
29.70 inches tracks across the mid south on sunday, followed by 
high pressure 30.10 inches building into the region on monday.


lez162>164-122115-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
1110 am est thu feb 12 2026

.rest of today...northwest winds 5 to 10 knots. the lake is
mostly ice covered.
.tonight...northwest winds less than 10 knots becoming southwest.
.friday...southwest winds 5 to 10 knots. 
.friday night...southwest winds 10 to 15 knots becoming west. 
.saturday...southwest winds 10 knots or less becoming south. 
.sunday...southeast winds 5 to 10 knots becoming northwest. 
.monday...southwest winds 5 to 10 knots becoming south. 

waves omitted due to the lake being mostly ice covered.

$$

fzus63 kdtx 121436
glflh 
expires:202602122245;;511941

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am est thu feb 12 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, 30.40 inches, builds into the western
great lakes through early thursday, then shifts southward into
the ohio valley by friday. meanwhile, a clipper system will pass
near northern lake huron leading to moderate southwest winds on
friday. high pressure will dominate the area through the weekend
as the storm track sets up across the southern us.


lhz462>464-122245-
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-
936 am est thu feb 12 2026

.rest of today...northwest winds 10 to 15 knots decreasing to
5 to 10 knots late in the afternoon. 
.tonight...northwest winds 5 to 10 knots early in the evening
becoming light and variable...then becoming southwest 5 to
10 knots early in the morning. 
.friday...southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. 
.friday night...southwest winds 10 to 15 knots becoming west 5 to
10 knots after midnight. 
.saturday...west winds 5 to 10 knots backing to the south late in
the afternoon. 
.sunday...south winds 5 to 10 knots veering to the west by
midnight. 
.monday...southwest winds 5 to 10 knots backing to the south . 

waves omitted due to ice coverage.

$$

fzus63 kdtx 121436
glflh 
expires:202602122245;;511939

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am est thu feb 12 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, 30.40 inches, builds into the western
great lakes through early thursday, then shifts southward into
the ohio valley by friday. meanwhile, a clipper system will pass
near northern lake huron leading to moderate southwest winds on
friday. high pressure will dominate the area through the weekend
as the storm track sets up across the southern us.


lhz361-122245-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
936 am est thu feb 12 2026

.rest of today...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.tonight...west winds 5 to 10 knots backing to the southwest
early in the morning. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots becoming west 10 to
15 knots. waves 1 to 3 feet. 
.friday night...west winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight. 
.saturday...west winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon. waves 2 feet or less. 
.sunday...south winds 5 to 10 knots veering to the west . waves
2 feet or less. 
.monday...west winds 5 to 10 knots backing to the south. waves
2 feet or less. 

wave heights are for ice free areas.

$$

fzus63 kdtx 121436
glflh 
expires:202602122245;;511940

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am est thu feb 12 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, 30.40 inches, builds into the western
great lakes through early thursday, then shifts southward into
the ohio valley by friday. meanwhile, a clipper system will pass
near northern lake huron leading to moderate southwest winds on
friday. high pressure will dominate the area through the weekend
as the storm track sets up across the southern us.


lhz362-363-122245-
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-
936 am est thu feb 12 2026

.rest of today...northwest winds 10 to 15 knots decreasing to
5 to 10 knots late in the afternoon. waves 2 to 4 feet. 
.tonight...west winds 5 to 10 knots backing to the southwest
early in the morning. waves 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet in the late
morning and afternoon. 
.friday night...west winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 2 to 4 feet. 
.saturday...west winds 5 to 10 knots backing to the south late in
the afternoon. waves 1 to 3 feet. 
.sunday...south winds 10 to 15 knots becoming southwest 5 to
10 knots early in the evening...then veering to the west by
midnight. waves 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots backing to the south
early in the evening...then increasing to 10 to 15 knots by
midnight. waves 1 to 3 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 121435
glfsc 
expires:202602122245;;511938

lake st clair forecast
national weather service detroit/pontiac mi
935 am est thu feb 12 2026

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, 30.40 inches, builds into the western
great lakes through early thursday, then shifts southward into
the ohio valley by friday. meanwhile, a clipper system will pass
near northern lake huron leading to moderate southwest winds on
friday. high pressure will dominate the area through the weekend
as the storm track sets up across the southern us.


lcz460-122245-
lake st clair-
935 am est thu feb 12 2026

.rest of today...northwest winds 5 to 10 knots. mostly sunny.
.tonight...northwest winds 5 to 10 knots this evening becoming light
and variable. partly cloudy.
.friday...southwest winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. mostly sunny.
.friday night...southwest winds 10 to 15 knots becoming west 5 to 10
knots after midnight. mostly clear.
.saturday...west winds 5 to 10 knots in the morning becoming light
and variable...then becoming south 5 to 10 knots in the evening.
mostly sunny becoming partly sunny in the afternoon becoming mostly
cloudy.
.sunday...northwest winds 5 to 10 knots. partly cloudy.
.monday...south winds 5 to 10 knots. partly cloudy.

waves omitted due to ice coverage.

$$

fzus63 kmkx 121447 aaa
glflm 
expires:202602122215;;512225

open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
847 am cst thu feb 12 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...

high pressure around 30.3 inches remains over the lake through 
this morning, with high pressure progressing eastward this 
afternoon and allowing southwesterly winds to develop tonight into
friday. west-southwest winds will continue through saturday as 
29.6 inch low pressure forms over northern manitoba. low pressure 
will move east into the hudson bay saturday night through sunday 
morning, pulling a weak cold front across lake michigan in the 
process. winds will briefly shift out of the northwest sunday 
afternoon behind the front.

winds will trend light and variable sunday night, as another high
pressure around 30.1 inches builds across the lake. winds will 
shift south, then southwesterly monday as the high shifts east, 
with readings steadily increasing through tuesday as around 29.5 
inches low pressure forms over the northern great plains. low 
pressure will approach and cross the lake tuesday night through 
wednesday, resulting in a westerly wind shift by wednesday 
afternoon. a few gales are possible tuesday night through 
wednesday morning, though how widespread they would be remains 
uncertain.


lmz080-669-671-673-675-777-779-870-872-874-876-878-122215-
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-
847 am cst thu feb 12 2026

sheboygan wi to pentwater mi south...

.rest of today...north winds 5 to 10 kt becoming east. waves 1 to
3 ft. 
.tonight...southeast winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.friday...south winds 10 to 20 kt becoming southwest 10 to 15 kt.
waves 2 to 4 ft. 
.friday night...southwest winds 10 to 15 kt becoming west 5 to
10 kt. waves 2 to 4 ft. 
.saturday...southwest winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.saturday night...south winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 15 kt becoming west. waves 1 to
3 ft. 
.monday...south winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 2 to 4 ft.  

wave forecast is for ice free areas

$$

fzus63 kmkx 121447 aaa
glflm 
expires:202602122215;;512224

open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
847 am cst thu feb 12 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...

high pressure around 30.3 inches remains over the lake through 
this morning, with high pressure progressing eastward this 
afternoon and allowing southwesterly winds to develop tonight into
friday. west-southwest winds will continue through saturday as 
29.6 inch low pressure forms over northern manitoba. low pressure 
will move east into the hudson bay saturday night through sunday 
morning, pulling a weak cold front across lake michigan in the 
process. winds will briefly shift out of the northwest sunday 
afternoon behind the front.

winds will trend light and variable sunday night, as another high
pressure around 30.1 inches builds across the lake. winds will 
shift south, then southwesterly monday as the high shifts east, 
with readings steadily increasing through tuesday as around 29.5 
inches low pressure forms over the northern great plains. low 
pressure will approach and cross the lake tuesday night through 
wednesday, resulting in a westerly wind shift by wednesday 
afternoon. a few gales are possible tuesday night through 
wednesday morning, though how widespread they would be remains 
uncertain.


lmz261-362-364-366-563-565-567-868-122215-
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-
847 am cst thu feb 12 2026

sheboygan wi to pentwater mi north...

.rest of today...north winds 5 to 10 kt backing to west. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.tonight...southwest winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 1 to 3 ft. 
.friday...southwest winds 15 to 25 kt becoming west 10 to 20 kt.
waves 3 to 5 ft. 
.friday night...northwest winds 10 to 15 kt becoming north. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.saturday...south winds 5 to 10 kt. waves 1 to 2 ft. 
.saturday night...south winds 10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt. waves 2 to 4 ft.  

wave forecast is for ice free areas

$$

fzus63 kmqt 121501
glfls 
expires:202602122100;;512766

open lake forecast for lake superior
national weather service marquette mi
1000 am est thu feb 12 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...

30.3 inch high pressure builds into the great lakes this morning. by 
friday morning, the high retreats into the southern portion of the 
great lakes while a 29.8 inch low moves across far northern ontario. 
this low pulls a 29.9 inch trough over eastern lake superior friday 
afternoon. high pressure builds back to 30.1 inches over the great 
lakes by saturday morning before a weak 29.8 inch trough moves into 
the upper great lakes saturday evening. weak troughing of around 
29.8 inches hangs out over the upper great lakes the rest of this 
weekend to monday.



lsz264-122100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est thu feb 12 2026

.rest of today...west winds less than 10 knots increasing to 5 to
15 knots by late morning, then backing southwest by mid
afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots by midnight, then increasing to 15 to 25 knots late.
waves building to 2 to 4 feet. 
.friday...west winds 15 to 25 knots becoming northwest 10 to
20 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots becoming southwest
less than 10 knots after midnight. waves subsiding to calm to
2 feet. 
.saturday...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 121501
glfls 
expires:202602122100;;512767

open lake forecast for lake superior
national weather service marquette mi
1000 am est thu feb 12 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...

30.3 inch high pressure builds into the great lakes this morning. by 
friday morning, the high retreats into the southern portion of the 
great lakes while a 29.8 inch low moves across far northern ontario. 
this low pulls a 29.9 inch trough over eastern lake superior friday 
afternoon. high pressure builds back to 30.1 inches over the great 
lakes by saturday morning before a weak 29.8 inch trough moves into 
the upper great lakes saturday evening. weak troughing of around 
29.8 inches hangs out over the upper great lakes the rest of this 
weekend to monday.



lsz265-122100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est thu feb 12 2026

.rest of today...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots veering southwest by
midnight. waves calm to 2 feet. 
.friday...west winds 15 to 25 knots. waves calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots veering west after
midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots backing southwest. waves calm
to 2 feet. 
.monday...south winds 10 to 20 knots veering west. waves calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 121501
glfls 
expires:202602122100;;512764

open lake forecast for lake superior
national weather service marquette mi
1000 am est thu feb 12 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...

30.3 inch high pressure builds into the great lakes this morning. by 
friday morning, the high retreats into the southern portion of the 
great lakes while a 29.8 inch low moves across far northern ontario. 
this low pulls a 29.9 inch trough over eastern lake superior friday 
afternoon. high pressure builds back to 30.1 inches over the great 
lakes by saturday morning before a weak 29.8 inch trough moves into 
the upper great lakes saturday evening. weak troughing of around 
29.8 inches hangs out over the upper great lakes the rest of this 
weekend to monday.



lsz162-122100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est thu feb 12 2026 /900 am cst thu feb 12 2026/

.rest of today...east winds 5 to 15 knots veering south by late
morning, then backing southeast by mid afternoon. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots increasing to 10 to
20 knots late. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 
.monday...west winds 5 to 15 knots veering northeast. waves calm
to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 121501
glfls 
expires:202602122100;;512769

open lake forecast for lake superior
national weather service marquette mi
1000 am est thu feb 12 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...

30.3 inch high pressure builds into the great lakes this morning. by 
friday morning, the high retreats into the southern portion of the 
great lakes while a 29.8 inch low moves across far northern ontario. 
this low pulls a 29.9 inch trough over eastern lake superior friday 
afternoon. high pressure builds back to 30.1 inches over the great 
lakes by saturday morning before a weak 29.8 inch trough moves into 
the upper great lakes saturday evening. weak troughing of around 
29.8 inches hangs out over the upper great lakes the rest of this 
weekend to monday.



lsz267-122100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est thu feb 12 2026

.rest of today...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots becoming south 10 to
20 knots by midnight, then veering southwest late. waves building
to 2 to 4 feet. 
.friday...southwest winds 10 to 20 knots becoming west 15 to
25 knots by late morning, then veering northwest by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.saturday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots backing southwest. waves
subsiding to calm to 2 feet. 
.monday...south winds 10 to 20 knots. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 121501
glfls 
expires:202602122100;;512768

open lake forecast for lake superior
national weather service marquette mi
1000 am est thu feb 12 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...

30.3 inch high pressure builds into the great lakes this morning. by 
friday morning, the high retreats into the southern portion of the 
great lakes while a 29.8 inch low moves across far northern ontario. 
this low pulls a 29.9 inch trough over eastern lake superior friday 
afternoon. high pressure builds back to 30.1 inches over the great 
lakes by saturday morning before a weak 29.8 inch trough moves into 
the upper great lakes saturday evening. weak troughing of around 
29.8 inches hangs out over the upper great lakes the rest of this 
weekend to monday.



lsz266-122100-
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 am est thu feb 12 2026

.rest of today...northwest winds 5 to 15 knots backing southwest
by mid afternoon. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...south winds 10 to 20 knots veering southwest by
midnight, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.friday...west winds 15 to 25 knots veering northwest by mid
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 5 to 15 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.saturday night...south winds 15 to 25 knots veering southwest
after midnight. waves building to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots backing southwest. waves
subsiding to calm to 2 feet. 
.monday...south winds 10 to 20 knots veering west. waves calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 121501
glfls 
expires:202602122100;;512765

open lake forecast for lake superior
national weather service marquette mi
1000 am est thu feb 12 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...

30.3 inch high pressure builds into the great lakes this morning. by 
friday morning, the high retreats into the southern portion of the 
great lakes while a 29.8 inch low moves across far northern ontario. 
this low pulls a 29.9 inch trough over eastern lake superior friday 
afternoon. high pressure builds back to 30.1 inches over the great 
lakes by saturday morning before a weak 29.8 inch trough moves into 
the upper great lakes saturday evening. weak troughing of around 
29.8 inches hangs out over the upper great lakes the rest of this 
weekend to monday.



lsz263-122100-
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 am est thu feb 12 2026

.rest of today...south winds less than 10 knots becoming
southwest 5 to 15 knots. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest 10 to
20 knots by midnight. waves building to 2 to 4 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds 5 to 15 knots becoming south less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$