fzus63 kdtx 190824
glflh 
expires:202602191630;;888826

open lake forecast for lake huron
national weather service detroit/pontiac mi
324 am est thu feb 19 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...areas of locally dense marine fog persist tonight with
decreasing precipitation chances. winds hold from the ese into
thursday with slightly weaker flow expected. potential exists for
additional gusts to gales over northern lake huron friday.


lhz361-362-191630-
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-
324 am est thu feb 19 2026

...gale watch in effect from late tonight through friday
afternoon...

.today...east winds 20 to 25 knots becoming southeast 15 to
20 knots in the late morning and afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.tonight...east winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots with gusts to 35 knot gales early
in the morning. a chance of rain after midnight. waves 8 to
12 feet building to 10 to 14 feet early in the morning. waves
occasionally around 18 feet. 
.friday...east winds to 30 knots decreasing to 20 to 25 knots
early in the afternoon. gusts to 35 knot gales. rain and snow.
waves 10 to 14 feet. waves occasionally around 18 feet. 
.friday night...northeast winds 15 to 20 knots. a chance of rain
and snow in the evening. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.saturday...northeast winds 15 to 20 knots decreasing to 10 to
15 knots. waves 4 to 6 feet. waves occasionally around 8 feet. 
.sunday...northeast winds 10 to 15 knots backing to the north
early in the evening...then increasing to 20 to 25 knots by
midnight. waves 3 to 5 feet building to 5 to 7 feet by midnight.
waves occasionally around 10 feet. 
.monday...north winds 20 to 25 knots decreasing to 10 to
15 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 190824
glflh 
expires:202602191630;;888827

open lake forecast for lake huron
national weather service detroit/pontiac mi
324 am est thu feb 19 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...areas of locally dense marine fog persist tonight with
decreasing precipitation chances. winds hold from the ese into
thursday with slightly weaker flow expected. potential exists for
additional gusts to gales over northern lake huron friday.


lhz363-462>464-191630-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
324 am est thu feb 19 2026

...dense fog advisory in effect until noon est today...

.today...southeast winds 10 to 15 knots. widespread fog in the
morning. 
.tonight...east winds 10 to 15 knots increasing to 15 to 20 knots
in the late evening and overnight. a chance of rain after
midnight. 
.friday...southeast winds 15 to 20 knots. rain in the morning...
then a chance of rain and snow in the afternoon. 
.friday night...north winds 10 to 15 knots. a chance of rain and
snow in the evening. 
.saturday...north winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. a chance of snow late in the
evening. 
.sunday...north winds 10 to 15 knots increasing to 20 to
25 knots. 
.monday...north winds 20 to 25 knots becoming northwest 15 to
20 knots . 

waves omitted due to ice coverage.

$$

fzus63 kdtx 190300
glflh 
expires:202602191100;;875758

open lake forecast for lake huron
national weather service detroit/pontiac mi
1000 pm est wed feb 18 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...areas of locally dense marine fog persist tonight with
decreasing precipitation chances. winds hold from the ese into
thursday with slightly weaker flow expected. potential exists for
additional gusts to gales over northern lake huron friday.


lhz462>464-191100-
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-
1000 pm est wed feb 18 2026

.rest of tonight...southeast winds 10 to 15 knots. 
.thursday...southeast winds 10 to 15 knots. 
.thursday night...east winds 15 to 20 knots becoming southeast
20 to 25 knots after midnight. rain likely after midnight. 
.friday...southeast winds 15 to 20 knots becoming south 10 to
15 knots early in the afternoon. rain in the morning...then a
chance of rain in the afternoon. 
.friday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots after midnight. a chance of rain and snow in the
evening. 
.saturday...west winds 10 to 15 knots veering to the 10 to
15 knots late in the evening. a chance of snow late in the
afternoon. 
.sunday...north winds 10 to 15 knots increasing to 20 to
25 knots. a chance of snow. 
.monday...north winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. 

waves omitted due to ice coverage.

$$

fzus63 kdtx 190300
glflh 
expires:202602191100;;875757

open lake forecast for lake huron
national weather service detroit/pontiac mi
1000 pm est wed feb 18 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...areas of locally dense marine fog persist tonight with
decreasing precipitation chances. winds hold from the ese into
thursday with slightly weaker flow expected. potential exists for
additional gusts to gales over northern lake huron friday.


lhz363-191100-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
1000 pm est wed feb 18 2026

.rest of tonight...east winds 10 to 15 knots. 
.thursday...southeast winds 10 to 15 knots. 
.thursday night...east winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. a chance of rain
after midnight. 
.friday...east winds 20 to 25 knots becoming southeast 15 to
20 knots in the late morning and afternoon. rain in the morning...
then rain with snow likely in the afternoon. 
.friday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots after midnight. a chance of snow and rain in the
evening. 
.saturday...west winds 10 to 15 knots veering to the north. a
chance of snow late in the afternoon. 
.sunday...north winds 15 to 20 knots increasing to 20 to 25 knots
with gusts to around 30 knots by midnight. a chance of snow early
in the morning. 
.monday...north winds 20 to 25 knots with gusts to around
30 knots becoming northwest 15 to 20 knots . 

waves omitted due to ice coverage.

$$

fzus63 kmkx 190853
glflm 
expires:202602191615;;889783

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cst thu feb 19 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...

winds will ease through this morning and become southerly as low 
pressure occludes near lake superior and weakens to 29.5 inches 
over northern minnesota. winds will increase tonight into friday 
night as another strong low pressure system around 29.2 inches 
tracks from iowa into central wisconsin. that low will cross 
northern lake michigan friday morning and gradually weaken through
saturday. gale force gusts look possible during the low's 
passage friday morning into friday afternoon, and a gale watch 
has been issued for lake michigan zones south of a line from 
sheboygan to pentwater. gusty northerly winds are then expected 
sunday into monday.


lmz261-362-364-366-563-565-567-868-191615-
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-
253 am cst thu feb 19 2026

sheboygan wi to pentwater mi north...

.today...south winds to 30 kt backing to east 15 to 25 kt. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.tonight...northeast winds to 30 kt becoming east. chance of rain
in the evening, then rain with freezing rain likely overnight.
waves 4 to 6 ft occasionally to 8 ft. 
.friday...east gales to 35 kt backing to north to 30 kt. rain,
snow and freezing rain in the morning, then chance of rain, snow
and light freezing rain likely in the afternoon. waves 5 to 8 ft
occasionally to 10 ft. 
.friday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. chance of snow in the evening. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.saturday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
chance of snow in the afternoon. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.saturday night...north winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.sunday...north winds 15 to 25 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.monday...north winds to 30 kt diminishing to 15 to 25 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 8 to 11 ft
occasionally to 14 ft.  

$$

fzus63 kmkx 190853
glflm 
expires:202602191615;;889784

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cst thu feb 19 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...

winds will ease through this morning and become southerly as low 
pressure occludes near lake superior and weakens to 29.5 inches 
over northern minnesota. winds will increase tonight into friday 
night as another strong low pressure system around 29.2 inches 
tracks from iowa into central wisconsin. that low will cross 
northern lake michigan friday morning and gradually weaken through
saturday. gale force gusts look possible during the low's 
passage friday morning into friday afternoon, and a gale watch 
has been issued for lake michigan zones south of a line from 
sheboygan to pentwater. gusty northerly winds are then expected 
sunday into monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-191615-
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-
253 am cst thu feb 19 2026

sheboygan wi to pentwater mi south...

...gale watch in effect from friday morning through friday
afternoon...

.today...south winds 5 to 10 kt backing to east 10 to 15 kt.
chance of rain this afternoon. waves 1 to 3 ft. 
.tonight...east winds 10 to 15 kt increasing to 10 to 20 kt late
in the evening, then becoming southeast after midnight becoming
south to 30 kt late. rain and slight chance of thunderstorms in
the evening, then chance of rain and slight chance of
thunderstorms overnight. waves 1 to 3 ft building to 3 to 5 ft. 
.friday...west gales to 35 kt. rain and snow likely in the
morning. waves 5 to 8 ft occasionally to 10 ft building to 10 to
14 ft occasionally to 18 ft. 
.friday night...west winds to 30 kt diminishing to 15 to 25 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.saturday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.sunday...northwest winds to 30 kt. chance of snow. waves 6 to
9 ft occasionally to 12 ft building to 8 to 11 ft occasionally to
14 ft. 
.monday...north winds to 30 kt. waves 12 to 16 ft occasionally to
21 ft.  

$$

fzus63 kmqt 190901
glfls 
expires:202602192100;;890167

open lake forecast for lake superior
national weather service marquette mi
400 am est thu feb 19 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...

29.6 inch low over lake superior this morning weakens to 29.7 inches 
by this evening as a 29.4 inch low over the central plains deepens 
to 29.1 inches before arriving over the western great lakes friday 
morning. troughing increases to 29.6 inches over lake superior on 
friday morning as the low moves through northern lower michigan, 
before the low lifts towards ontario and weakens to 29.5 inches by 
friday evening. remnant troughing over lake superior weakens to 30.0 
inches by saturday morning as ridging builds over the northern 
plains. pressure continues to rise over lake superior saturday 
through monday as the ridging over the northern plains continues to 
push eastwards with time, eventually peaking at 30.5 inches over the 
lake late monday. behind the ridging, a deepening 29.6 inch clipper 
low moves into the northern plains on tuesday.



lsz267-192100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est thu feb 19 2026

...gale warning in effect until 1 pm est this afternoon...

.early this morning...southeast gales to 40 knots. freezing
spray. a slight chance of freezing rain and snow showers. waves
6 to 9 feet occasionally to 11 feet. 
.today...southeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. a slight chance of snow showers in the
morning. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...southeast winds 20 to 30 knots backing east by
midnight, then increasing to gales to 35 knots late. a chance of
rain and freezing rain. a chance of snow, possibly mixed with
sleet after midnight. waves 3 to 5 feet occasionally to 7 feet. 
.friday...east gales to 35 knots diminishing to 20 to 30 knots by
late morning, then backing northeast by mid afternoon. rain and
freezing rain likely in the morning. snow likely. a slight chance
of rain in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...northeast winds 15 to 25 knots veering east after
midnight. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.saturday...east winds 10 to 20 knots backing northeast in the
afternoon. a chance of snow showers. waves subsiding to calm to
2 feet. 
.saturday night...northeast winds 10 to 20 knots. waves building
to 1 to 3 feet, then subsiding to calm to 2 feet. 
.sunday...north winds 15 to 25 knots increasing to 20 to
30 knots. freezing spray. waves building to 5 to 8 feet
occasionally to 10 feet. 
.monday...north winds 15 to 25 knots diminishing to 10 to
20 knots. heavy freezing spray. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 190901
glfls 
expires:202602192100;;890162

open lake forecast for lake superior
national weather service marquette mi
400 am est thu feb 19 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...

29.6 inch low over lake superior this morning weakens to 29.7 inches 
by this evening as a 29.4 inch low over the central plains deepens 
to 29.1 inches before arriving over the western great lakes friday 
morning. troughing increases to 29.6 inches over lake superior on 
friday morning as the low moves through northern lower michigan, 
before the low lifts towards ontario and weakens to 29.5 inches by 
friday evening. remnant troughing over lake superior weakens to 30.0 
inches by saturday morning as ridging builds over the northern 
plains. pressure continues to rise over lake superior saturday 
through monday as the ridging over the northern plains continues to 
push eastwards with time, eventually peaking at 30.5 inches over the 
lake late monday. behind the ridging, a deepening 29.6 inch clipper 
low moves into the northern plains on tuesday.



lsz162-192100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est thu feb 19 2026 /300 am cst thu feb 19 2026/

...gale warning in effect until 7 am est /6 am cst/ this
morning...

.early this morning...northeast gales to 35 knots. a chance of
snow showers. waves 7 to 10 feet occasionally to 13 feet. 
.today...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots becoming north 10 to
20 knots by midnight. a chance of snow. waves subsiding to 1 to
3 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of snow. waves building to
2 to 4 feet. 
.friday night...north winds 10 to 20 knots. a chance of snow
showers. waves subsiding to 1 to 3 feet. 
.saturday...north winds 10 to 20 knots. a chance of snow showers.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.saturday night...north winds 10 to 20 knots backing northwest
after midnight. waves calm to 2 feet. 
.sunday...north winds 15 to 25 knots. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 190901
glfls 
expires:202602192100;;890163

open lake forecast for lake superior
national weather service marquette mi
400 am est thu feb 19 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...

29.6 inch low over lake superior this morning weakens to 29.7 inches 
by this evening as a 29.4 inch low over the central plains deepens 
to 29.1 inches before arriving over the western great lakes friday 
morning. troughing increases to 29.6 inches over lake superior on 
friday morning as the low moves through northern lower michigan, 
before the low lifts towards ontario and weakens to 29.5 inches by 
friday evening. remnant troughing over lake superior weakens to 30.0 
inches by saturday morning as ridging builds over the northern 
plains. pressure continues to rise over lake superior saturday 
through monday as the ridging over the northern plains continues to 
push eastwards with time, eventually peaking at 30.5 inches over the 
lake late monday. behind the ridging, a deepening 29.6 inch clipper 
low moves into the northern plains on tuesday.



lsz263-192100-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am est thu feb 19 2026

...gale warning in effect until 7 am est this morning...

.early this morning...east gales to 35 knots. a chance of snow
showers. waves 12 to 17 feet occasionally to 21 feet subsiding to
11 to 15 feet occasionally to 19 feet. 
.today...east gales to 35 knots becoming northeast 20 to 30 knots
by mid afternoon. a chance of snow showers. waves subsiding to
6 to 9 feet occasionally to 11 feet. 
.tonight...northeast winds 15 to 25 knots backing north late. a
chance of snow. waves subsiding to 3 to 5 feet occasionally to
7 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 15 to 25 knots. snow likely in the morning,
then a chance of snow in the afternoon. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...north winds 10 to 20 knots. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.saturday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.sunday...north winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet. 
.monday...north winds 15 to 25 knots becoming south 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 190901
glfls 
expires:202602192100;;890164

open lake forecast for lake superior
national weather service marquette mi
400 am est thu feb 19 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...

29.6 inch low over lake superior this morning weakens to 29.7 inches 
by this evening as a 29.4 inch low over the central plains deepens 
to 29.1 inches before arriving over the western great lakes friday 
morning. troughing increases to 29.6 inches over lake superior on 
friday morning as the low moves through northern lower michigan, 
before the low lifts towards ontario and weakens to 29.5 inches by 
friday evening. remnant troughing over lake superior weakens to 30.0 
inches by saturday morning as ridging builds over the northern 
plains. pressure continues to rise over lake superior saturday 
through monday as the ridging over the northern plains continues to 
push eastwards with time, eventually peaking at 30.5 inches over the 
lake late monday. behind the ridging, a deepening 29.6 inch clipper 
low moves into the northern plains on tuesday.



lsz264-192100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est thu feb 19 2026

...gale warning in effect until 1 pm est this afternoon...

.early this morning...east gales to 35 knots. snow showers. waves
12 to 17 feet occasionally to 21 feet subsiding to 11 to 15 feet
occasionally to 19 feet. 
.today...east gales to 35 knots veering southeast by late
morning, then diminishing to 20 to 30 knots by mid afternoon.
snow showers likely in the morning, then a chance of snow showers
in the afternoon. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.tonight...southeast winds 15 to 25 knots backing east by
midnight. a chance of snow. a slight chance of rain after
midnight. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.friday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then backing north by mid afternoon.
snow likely in the morning, then a chance of snow in the
afternoon. freezing spray in the afternoon. waves subsiding to
4 to 7 feet occasionally to 9 feet. 
.friday night...northeast winds 10 to 20 knots. a chance of snow
showers. freezing spray after midnight. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.saturday...northeast winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.saturday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. freezing spray after midnight. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.sunday...north winds 20 to 30 knots. heavy freezing spray. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday...north winds 20 to 30 knots diminishing to 10 to
20 knots. heavy freezing spray. waves subsiding to calm to
2 feet, then building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 190901
glfls 
expires:202602192100;;890165

open lake forecast for lake superior
national weather service marquette mi
400 am est thu feb 19 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...

29.6 inch low over lake superior this morning weakens to 29.7 inches 
by this evening as a 29.4 inch low over the central plains deepens 
to 29.1 inches before arriving over the western great lakes friday 
morning. troughing increases to 29.6 inches over lake superior on 
friday morning as the low moves through northern lower michigan, 
before the low lifts towards ontario and weakens to 29.5 inches by 
friday evening. remnant troughing over lake superior weakens to 30.0 
inches by saturday morning as ridging builds over the northern 
plains. pressure continues to rise over lake superior saturday 
through monday as the ridging over the northern plains continues to 
push eastwards with time, eventually peaking at 30.5 inches over the 
lake late monday. behind the ridging, a deepening 29.6 inch clipper 
low moves into the northern plains on tuesday.



lsz265-192100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est thu feb 19 2026

...gale warning in effect until 7 am est this morning...

.early this morning...southeast gales to 35 knots. a chance of
snow showers. waves 8 to 11 feet occasionally to 14 feet
subsiding to 7 to 10 feet occasionally to 13 feet. 
.today...southeast winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.tonight...southeast winds 15 to 25 knots backing northeast late.
a chance of snow. waves subsiding to 1 to 3 feet, then building
to 3 to 6 feet occasionally to 8 feet. 
.friday...northeast winds 20 to 30 knots backing north by mid
afternoon. snow. waves building to 4 to 8 feet occasionally to
10 feet. 
.friday night...north winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday...north winds 15 to 25 knots. a chance of snow showers.
waves subsiding to 2 to 4 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.sunday...north winds 20 to 30 knots increasing to gales to
35 knots. waves building to 7 to 10 feet occasionally to 13 feet.
.monday...north winds 20 to 30 knots becoming southwest 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 190901
glfls 
expires:202602192100;;890166

open lake forecast for lake superior
national weather service marquette mi
400 am est thu feb 19 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...

29.6 inch low over lake superior this morning weakens to 29.7 inches 
by this evening as a 29.4 inch low over the central plains deepens 
to 29.1 inches before arriving over the western great lakes friday 
morning. troughing increases to 29.6 inches over lake superior on 
friday morning as the low moves through northern lower michigan, 
before the low lifts towards ontario and weakens to 29.5 inches by 
friday evening. remnant troughing over lake superior weakens to 30.0 
inches by saturday morning as ridging builds over the northern 
plains. pressure continues to rise over lake superior saturday 
through monday as the ridging over the northern plains continues to 
push eastwards with time, eventually peaking at 30.5 inches over the 
lake late monday. behind the ridging, a deepening 29.6 inch clipper 
low moves into the northern plains on tuesday.



lsz266-192100-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am est thu feb 19 2026

...gale warning in effect until 1 pm est this afternoon...

.early this morning...southeast gales to 35 knots. a chance of
snow showers. waves 11 to 15 feet occasionally to 19 feet
subsiding to 10 to 14 feet occasionally to 18 feet. 
.today...southeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. a chance of snow showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.tonight...southeast winds 20 to 30 knots backing east by
midnight. a chance of snow. a chance of rain and freezing rain
after midnight. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.friday...east gales to 35 knots becoming northeast 20 to
30 knots by mid afternoon. snow likely. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...northeast winds 20 to 30 knots becoming east
15 to 25 knots after midnight. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday...east winds 15 to 25 knots backing northeast in the
afternoon. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.saturday night...northeast winds 15 to 25 knots backing north
after midnight. a chance of snow showers. waves 2 to 4 feet. 
.sunday...north winds 20 to 30 knots increasing to gales to
35 knots. freezing spray. waves building to 8 to 11 feet
occasionally to 14 feet. 
.monday...north winds 20 to 30 knots diminishing to 10 to
20 knots. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$