fzus63 kdtx 180258
glflh 
expires:202602181100;;817517

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 pm est tue feb 17 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...a persistent layer of marine fog resides over much of
the central great lakes through this evening. an approaching low
pressure system brings gusts to gales over the northern half of
lake huron wednesday morning. this system also produces a period
of rainfall wednesday, possibly mixed with snow over the northern
waterways. a brief lull ensues thursday, followed by potential
for additional gusts to gales over northern lake huron friday.


lhz361-362-181100-
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-
958 pm est tue feb 17 2026

...gale warning remains in effect from 4 am to 4 pm est
wednesday...

.rest of tonight...east winds 10 to 15 knots increasing to
30 knots with gusts to 35 knot gales. areas of dense fog. a
chance of snow and rain likely after midnight. waves 2 feet or
less building to 8 to 12 feet. waves occasionally around 15 feet.
.wednesday...east at 35 knot gales decreasing to 30 knots in the
afternoon. gusts to 40 knot gales. snow in the morning...then
snow and a chance of freezing rain in the afternoon. patchy fog.
areas of dense freezing fog in the afternoon. waves 12 to
16 feet. waves occasionally around 20 feet. 
.wednesday night...east winds to 30 knots with gusts to 35 knot
gales decreasing to 20 to 25 knots with gusts to around 30 knots
in the late evening and overnight. a chance of snow in the
evening. waves 10 to 14 feet. waves occasionally around 18 feet. 
.thursday...east winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.thursday night...east winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots with gusts to 35 knot gales after
midnight. a chance of rain...freezing rain and snow after
midnight. waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday...east winds to 30 knots with gusts to 35 knot gales
decreasing to 20 to 25 knots with gusts to around 30 knots late
in the morning...then decreasing to 15 to 20 knots late in the
afternoon backing to the north late in the evening. rain and snow
likely...then a chance of snow late in the afternoon. a chance of
rain late in the afternoon. waves 8 to 12 feet subsiding to 5 to
7 feet late in the evening. waves occasionally around 15 feet. 
.saturday...north winds 15 to 20 knots becoming northwest 10 to
15 knots until early evening...then increasing to 15 to 20 knots
by midnight. waves 4 to 6 feet. waves occasionally around 8 feet.
.sunday...north winds 15 to 20 knots increasing to 30 knots.
waves 8 to 12 feet. waves occasionally around 15 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 180258
glflh 
expires:202602181100;;817518

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 pm est tue feb 17 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...a persistent layer of marine fog resides over much of
the central great lakes through this evening. an approaching low
pressure system brings gusts to gales over the northern half of
lake huron wednesday morning. this system also produces a period
of rainfall wednesday, possibly mixed with snow over the northern
waterways. a brief lull ensues thursday, followed by potential
for additional gusts to gales over northern lake huron friday.


lhz363-181100-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
958 pm est tue feb 17 2026

.rest of tonight...east winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots early in the morning.
widespread dense freezing fog this evening. areas of dense fog. a
chance of rain after midnight. 
.wednesday...east winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots late in the afternoon. rain
and snow in the morning...then snow likely and a chance of rain
in the afternoon. widespread dense fog in the morning. areas of
dense fog in the afternoon. 
.wednesday night...east winds 10 to 15 knots. 
.thursday...east winds 10 to 15 knots. 
.thursday night...east winds 15 to 20 knots. a chance of rain
after midnight. 
.friday...east winds 15 to 20 knots veering to the west late in
the evening. a chance of rain. a chance of snow late in the
morning. 
.saturday...west winds 15 to 20 knots decreasing to 10 to
15 knots until early evening...then becoming northwest 15 to
20 knots by midnight. 
.sunday...north winds 15 to 20 knots increasing to 30 knots. 

waves omitted due to ice coverage.

$$

fzus63 kdtx 180258
glflh 
expires:202602181100;;817519

open lake forecast for lake huron
national weather service detroit/pontiac mi
958 pm est tue feb 17 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...a persistent layer of marine fog resides over much of
the central great lakes through this evening. an approaching low
pressure system brings gusts to gales over the northern half of
lake huron wednesday morning. this system also produces a period
of rainfall wednesday, possibly mixed with snow over the northern
waterways. a brief lull ensues thursday, followed by potential
for additional gusts to gales over northern lake huron friday.


lhz462>464-181100-
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-
958 pm est tue feb 17 2026

...dense fog advisory in effect until 10 am est wednesday...

.rest of tonight...east winds 5 to 10 knots increasing to 10 to
15 knots after midnight. widespread dense fog. a chance of rain
after midnight. 
.wednesday...east winds 15 to 20 knots becoming southeast 10 to
15 knots late in the afternoon. rain in the morning...then a
chance of rain in the afternoon. widespread dense fog. 
.wednesday night...southeast winds 10 to 15 knots becoming east
5 to 10 knots by midnight...then increasing to 10 to 15 knots
after midnight. 
.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. 
.friday...southeast winds 15 to 20 knots veering to the southwest
late in the afternoon...then becoming west 10 to 15 knots late in
the evening. rain likely...then a chance of rain late in the
afternoon. 
.saturday...west winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then becoming northwest 10 to 15 knots by
midnight. 
.sunday...north winds 15 to 20 knots increasing to 30 knots. a
chance of snow until early evening. 

waves omitted due to ice coverage.

$$

fzus63 kmkx 180333
glflm 
expires:202602181015;;819025

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
933 pm cst tue feb 17 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...

east to southeast winds will increase through tonight as a 
strong, compact low pressure of 29.1 inches approaches from the 
dakotas. high-end, easterly gales are expected from midnight into 
wednesday afternoon over the northern third of the lake, where a 
gale warning remains in effect but has been extended to the entire
north half of the lake. the warmer airmass over the chilly lake 
waters should limit the mixing down of higher gusts any further
south. high winds may not reach across the entire south half but
the chances increased a tad with the latest model information.

winds will ease later wednesday into thursday and become southerly
as that low occludes and weakens to 29.5 inches over northern
minnesota. winds will increase thursday night into friday night 
as another strong low pressure system around 29.2 inches tracks
from iowa into central wisconsin. that low will cross northern or
central lake michigan friday morning and gradually weaken through
saturday. gusty northerly winds are expected sunday into monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-181015-
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-
933 pm cst tue feb 17 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds to 30 kt increasing to gales
to 35 kt. chance of rain late this evening, then rain overnight.
waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft. 
.wednesday...south winds to 30 kt becoming southwest. chance of
rain in the morning. waves 7 to 10 ft occasionally to 13 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.wednesday night...southwest winds 10 to 20 kt diminishing to
10 to 15 kt late in the evening, then becoming south 5 to 10 kt
after midnight becoming southeast 10 to 15 kt late. waves 3 to
5 ft subsiding to 1 to 3 ft. 
.thursday...southeast winds 10 to 15 kt becoming east 10 to
20 kt. chance of rain in the afternoon. waves 2 to 4 ft. 
.thursday night...east winds 10 to 20 kt becoming south 15 to
25 kt. rain in the evening, then rain likely overnight. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.friday...southwest winds to 30 kt becoming west. chance of rain
and snow in the morning. waves 7 to 10 ft occasionally to 13 ft. 
.friday night...west winds to 30 kt diminishing to 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft. 
.saturday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.sunday...northwest winds to 30 kt. chance of snow. waves 12 to
16 ft occasionally to 21 ft.  

$$

fzus63 kmkx 180333
glflm 
expires:202602181015;;819024

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
933 pm cst tue feb 17 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...

east to southeast winds will increase through tonight as a 
strong, compact low pressure of 29.1 inches approaches from the 
dakotas. high-end, easterly gales are expected from midnight into 
wednesday afternoon over the northern third of the lake, where a 
gale warning remains in effect but has been extended to the entire
north half of the lake. the warmer airmass over the chilly lake 
waters should limit the mixing down of higher gusts any further
south. high winds may not reach across the entire south half but
the chances increased a tad with the latest model information.

winds will ease later wednesday into thursday and become southerly
as that low occludes and weakens to 29.5 inches over northern
minnesota. winds will increase thursday night into friday night 
as another strong low pressure system around 29.2 inches tracks
from iowa into central wisconsin. that low will cross northern or
central lake michigan friday morning and gradually weaken through
saturday. gusty northerly winds are expected sunday into monday.


lmz261-362-364-366-563-565-567-868-181015-
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-
933 pm cst tue feb 17 2026

sheboygan wi to pentwater mi north...

...gale warning in effect through wednesday afternoon...

.rest of tonight...east gales to 35 kt increasing to gales to
45 kt. chance of rain and light freezing rain late this evening,
then rain, light freezing rain and snow likely overnight. waves
6 to 9 ft occasionally to 12 ft building to 8 to 12 ft
occasionally to 16 ft. 
.wednesday...southeast gales to 45 kt becoming south gales to
40 kt. rain, snow, slight chance of freezing rain and sleet in
the morning, then chance of rain and light freezing rain in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft. 
.wednesday night...southeast gales to 40 kt diminishing to 30 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.thursday...southeast winds to 30 kt becoming east. waves 3 to
5 ft. 
.thursday night...east winds to 30 kt. chance of rain in the
evening, then rain likely with a chance of light freezing rain
overnight. waves 4 to 6 ft occasionally to 8 ft. 
.friday...southeast winds to 30 kt backing to northwest 15 to
25 kt. rain and snow likely in the morning, then chance of snow
and rain in the afternoon. waves 5 to 8 ft occasionally to 10 ft.
.friday night...northwest winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.saturday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday...north winds to 30 kt. waves 8 to 11 ft occasionally to
14 ft building to 8 to 12 ft occasionally to 16 ft.  

$$

fzus63 kmqt 180301
glfls 
expires:202602180900;;817720

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue feb 17 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...

30.1 inch ridging gives way to pressure falls tonight as 29.1 inch 
low pressure ejects out of the northern plains. pressure will fall 
to at least 29.7 inches over the lake by tomorrow morning. 29.8 inch 
troughing then persists over the lake through thursday, deepening to 
29.5 inches by friday morning as a 29.3 inch low approaches upper 
michigan from the south. this feature weakens over lake huron 
saturday, but continues to extend weak 29.9 inch troughing over lake 
superior at least through saturday afternoon.



lsz264-180900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est tue feb 17 2026

...gale warning in effect through thursday morning...

.rest of tonight...east winds 20 to 30 knots increasing to gales
to 45 knots by midnight. freezing spray after midnight. a chance
of snow after midnight. waves 4 to 7 feet occasionally to 9 feet
building to 12 to 17 feet occasionally to 21 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 55 knots possible diminishing to gales to 45 knots by mid
afternoon. freezing spray. snow. waves building to 17 to 22 feet
occasionally to 28 feet, then subsiding to 15 to 20 feet
occasionally to 25 feet. 
.wednesday night...east gales to 40 knots. freezing spray in the
evening. a chance of snow showers. waves subsiding to 10 to
14 feet occasionally to 18 feet. 
.thursday...east gales to 35 knots. a chance of snow showers.
waves subsiding to 7 to 10 feet occasionally to 13 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 35 knots after midnight. a chance of snow. waves subsiding to
6 to 9 feet occasionally to 11 feet. 
.friday...east gales to 35 knots backing northeast in the
afternoon. a chance of snow. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...northeast winds 15 to 25 knots backing north
after midnight. freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.saturday...north winds 10 to 20 knots increasing to 15 to
25 knots. waves subsiding to 2 to 4 feet, then building to 5 to
8 feet occasionally to 10 feet. 
.sunday...north winds 15 to 25 knots. waves subsiding to 4 to
7 feet occasionally to 9 feet, then building to 6 to 9 feet
occasionally to 11 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202602180900;;817721

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue feb 17 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...

30.1 inch ridging gives way to pressure falls tonight as 29.1 inch 
low pressure ejects out of the northern plains. pressure will fall 
to at least 29.7 inches over the lake by tomorrow morning. 29.8 inch 
troughing then persists over the lake through thursday, deepening to 
29.5 inches by friday morning as a 29.3 inch low approaches upper 
michigan from the south. this feature weakens over lake huron 
saturday, but continues to extend weak 29.9 inch troughing over lake 
superior at least through saturday afternoon.



lsz265-180900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est tue feb 17 2026

...gale warning in effect through late wednesday night...

.rest of tonight...east gales to 45 knots. a slight chance of
snow late in the evening, then snow likely after midnight. waves
3 to 5 feet occasionally to 7 feet building to 12 to 17 feet
occasionally to 21 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 55 knots possible diminishing to gales to 45 knots by mid
afternoon. snow. waves building to 15 to 20 feet occasionally to
25 feet, then subsiding to 12 to 17 feet occasionally to 21 feet.
.wednesday night...east gales to 40 knots. a chance of snow
showers. waves subsiding to 8 to 11 feet occasionally to 14 feet.
.thursday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. a chance of snow showers. waves subsiding to
5 to 8 feet occasionally to 10 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 35 knots after midnight. a chance of snow. waves 5 to 8 feet
occasionally to 10 feet. 
.friday...east gales to 35 knots backing northeast in the
afternoon. snow likely. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...northeast winds 20 to 30 knots backing northwest
after midnight. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...northwest winds 20 to 30 knots. waves subsiding to
2 to 4 feet, then building to 5 to 8 feet occasionally to
10 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 6 to
10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202602180900;;817722

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue feb 17 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...

30.1 inch ridging gives way to pressure falls tonight as 29.1 inch 
low pressure ejects out of the northern plains. pressure will fall 
to at least 29.7 inches over the lake by tomorrow morning. 29.8 inch 
troughing then persists over the lake through thursday, deepening to 
29.5 inches by friday morning as a 29.3 inch low approaches upper 
michigan from the south. this feature weakens over lake huron 
saturday, but continues to extend weak 29.9 inch troughing over lake 
superior at least through saturday afternoon.



lsz266-180900-
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 tue feb 17 2026

...gale warning in effect through late wednesday night...

.rest of tonight...east winds 20 to 30 knots increasing to gales
to 45 knots by midnight. a chance of snow. freezing spray after
midnight. waves 3 to 5 feet occasionally to 7 feet building to
12 to 17 feet occasionally to 21 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 55 knots possible diminishing to gales to 45 knots by mid
afternoon. freezing spray. a slight chance of freezing rain and
sleet in the morning. snow. waves building to 15 to 20 feet
occasionally to 25 feet. 
.wednesday night...east gales to 40 knots. freezing spray in the
evening. a chance of snow showers. waves subsiding to 10 to
14 feet occasionally to 18 feet. 
.thursday...east gales to 40 knots. a chance of snow showers.
waves subsiding to 6 to 9 feet occasionally to 11 feet. 
.thursday night...east gales to 40 knots. a chance of snow. waves
subsiding to 5 to 8 feet occasionally to 10 feet, then building
to 6 to 9 feet occasionally to 11 feet. 
.friday...east gales to 40 knots. a chance of snow in the
morning, then snow likely in the afternoon. waves subsiding to
4 to 7 feet occasionally to 9 feet. 
.friday night...east winds 20 to 30 knots backing northeast after
midnight. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...northwest winds 20 to 30 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.sunday...north winds 20 to 30 knots. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202602180900;;817723

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue feb 17 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...

30.1 inch ridging gives way to pressure falls tonight as 29.1 inch 
low pressure ejects out of the northern plains. pressure will fall 
to at least 29.7 inches over the lake by tomorrow morning. 29.8 inch 
troughing then persists over the lake through thursday, deepening to 
29.5 inches by friday morning as a 29.3 inch low approaches upper 
michigan from the south. this feature weakens over lake huron 
saturday, but continues to extend weak 29.9 inch troughing over lake 
superior at least through saturday afternoon.



lsz267-180900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est tue feb 17 2026

...gale warning in effect from 7 am est wednesday through
wednesday evening...

.rest of tonight...east winds 15 to 25 knots increasing to gales
to 40 knots by midnight. freezing spray after midnight. a chance
of snow after midnight. waves 2 to 4 feet building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday...east gales to 45 knots. freezing spray. a slight
chance of sleet in the morning. snow. waves building to 7 to
11 feet occasionally to 14 feet. 
.wednesday night...east gales to 35 knots. freezing spray. a
chance of snow showers. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.thursday...east gales to 35 knots becoming southeast 20 to
30 knots in the afternoon. a slight chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday night...east gales to 35 knots. a chance of snow. waves
3 to 6 feet occasionally to 8 feet. 
.friday...east gales to 35 knots. a chance of snow in the
morning, then snow likely in the afternoon. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.friday night...east winds 15 to 25 knots. a chance of snow
showers. waves 3 to 5 feet occasionally to 7 feet. 
.saturday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 
.sunday...north winds 15 to 25 knots. waves building to 5 to
8 feet occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202602180900;;817718

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue feb 17 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...

30.1 inch ridging gives way to pressure falls tonight as 29.1 inch 
low pressure ejects out of the northern plains. pressure will fall 
to at least 29.7 inches over the lake by tomorrow morning. 29.8 inch 
troughing then persists over the lake through thursday, deepening to 
29.5 inches by friday morning as a 29.3 inch low approaches upper 
michigan from the south. this feature weakens over lake huron 
saturday, but continues to extend weak 29.9 inch troughing over lake 
superior at least through saturday afternoon.



lsz162-180900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est tue feb 17 2026 /900 pm cst tue feb 17 2026/

...storm warning in effect through wednesday evening...

.rest of tonight...east gales to 45 knots increasing to storm
force winds to 55 knots by midnight. a chance of snow late in the
evening. a slight chance of sleet. snow after midnight. waves
6 to 9 feet occasionally to 11 feet building to 7 to 10 feet
occasionally to 13 feet. 
.wednesday...east storm force winds to 55 knots diminishing to
gales to 45 knots by mid afternoon. snow. rain likely in the
afternoon. waves 7 to 10 feet occasionally to 13 feet. 
.wednesday night...east gales to 45 knots. snow showers likely.
waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...east gales to 35 knots becoming northeast 20 to
30 knots in the afternoon. a chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday night...northeast winds 20 to 30 knots. a chance of
snow. waves subsiding to 2 to 4 feet. 
.friday...northeast winds 20 to 30 knots. a chance of snow. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.friday night...north winds 15 to 25 knots backing northwest
after midnight. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots veering north. waves
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202602180900;;817719

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue feb 17 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...

30.1 inch ridging gives way to pressure falls tonight as 29.1 inch 
low pressure ejects out of the northern plains. pressure will fall 
to at least 29.7 inches over the lake by tomorrow morning. 29.8 inch 
troughing then persists over the lake through thursday, deepening to 
29.5 inches by friday morning as a 29.3 inch low approaches upper 
michigan from the south. this feature weakens over lake huron 
saturday, but continues to extend weak 29.9 inch troughing over lake 
superior at least through saturday afternoon.



lsz263-180900-
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 tue feb 17 2026

...gale warning in effect through late wednesday night...

.rest of tonight...east gales to 45 knots increasing to gales to
45 knots with a few storm force gusts to 55 knots possible late.
a slight chance of snow late in the evening, then snow, possibly
mixed with freezing rain and sleet after midnight. waves 3 to
6 feet occasionally to 8 feet building to 12 to 17 feet
occasionally to 21 feet. 
.wednesday...east gales to 45 knots with a few storm force gusts
to 50 knots possible diminishing to gales to 45 knots. snow. rain
likely in the afternoon. waves building to 17 to 22 feet
occasionally to 28 feet, then subsiding to 15 to 20 feet
occasionally to 25 feet. 
.wednesday night...east gales to 45 knots. a chance of snow
showers. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.thursday...east gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. a chance of snow showers. a slight chance of
rain showers in the afternoon. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.thursday night...east winds 20 to 30 knots becoming northeast
gales to 35 knots after midnight. a chance of snow. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.friday...northeast winds 20 to 30 knots. a chance of snow. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 15 to 25 knots. a chance of snow
showers. waves 3 to 6 feet occasionally to 8 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet.
.sunday...northwest winds 10 to 20 knots veering north. 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.

$$