fzus63 kdtx 172043
glflh 
expires:202602180445;;802764

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 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.


lhz361-362-180445-
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-
343 pm est tue feb 17 2026

...dense fog advisory in effect until 10 pm est this evening...
...gale warning in effect from late tonight through wednesday
afternoon...

.tonight...east winds 5 to 10 knots increasing to 30 knots with
gusts to 35 knot gales. widespread dense fog and dense freezing
fog in the evening...then areas of fog after midnight. 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 172043
glflh 
expires:202602180445;;802765

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 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.


lhz363-180445-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
343 pm est tue feb 17 2026

...dense fog advisory in effect until 10 pm est this evening...

.tonight...east winds 5 to 10 knots increasing to 15 to 20 knots
with gusts to around 30 knots. widespread dense fog and dense
freezing fog in the evening...then areas of fog after midnight. 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 172043
glflh 
expires:202602180445;;802766

open lake forecast for lake huron
national weather service detroit/pontiac mi
343 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>464-180445-
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-
343 pm est tue feb 17 2026

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

.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 172049
glflm 
expires:202602180430;;802872

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 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. the warmer airmass over the chilly
lake waters should limit the mixing down of higher gusts 
elsewhere across the lake.

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.


lmz261-362-364-563-180430-
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 rock island passage to sturgeon bay wi-
249 pm cst tue feb 17 2026

sturgeon bay wi to point betsie mi north...

...gale warning in effect from midnight cst tonight through
wednesday afternoon...

.tonight...east winds to 30 kt increasing to gales to 40 kt.
chance of light freezing rain and slight chance of rain showers
this evening, then rain showers, snow showers, freezing rain and
slight chance of sleet overnight. waves 6 to 9 ft occasionally to
12 ft building to 8 to 11 ft occasionally to 14 ft. 
.wednesday...east gales to 45 kt becoming southeast gales to
40 kt early in the afternoon, then diminishing to gales to 35 kt
late. rain showers, snow showers, freezing rain and slight chance
of light sleet in the morning, then snow showers likely, chance
of rain showers 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...east winds to 30 kt becoming southeast. chance
of snow showers and light freezing rain in the evening. 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 chance of snow and rain overnight. waves 4 to 6 ft
occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft.
.friday...east winds to 30 kt becoming north 15 to 25 kt. rain
and snow likely in the morning, then snow likely in the
afternoon. waves 7 to 10 ft occasionally to 13 ft. 
.friday night...northwest winds 10 to 20 kt. chance of snow.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.saturday...northwest winds 10 to 20 kt diminishing to 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.sunday...north winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft.  

$$

fzus63 kmkx 172049
glflm 
expires:202602180430;;802873

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 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. the warmer airmass over the chilly
lake waters should limit the mixing down of higher gusts 
elsewhere across the lake.

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.


lmz080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-180430-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
249 pm cst tue feb 17 2026

sturgeon bay wi to point betsie mi south...

.tonight...east winds 15 to 25 kt becoming southeast to 30 kt.
chance of rain showers and thunderstorms this evening, then rain
showers with a chance of thunderstorms 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 15 to 25 kt,
then diminishing to 10 to 20 kt late. chance of rain showers in
the morning. waves 7 to 10 ft occasionally to 13 ft subsiding to
4 to 7 ft occasionally to 9 ft. 
.wednesday night...southwest winds 10 to 15 kt becoming
southeast. 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 1 to 3 ft building
to 2 to 4 ft. 
.thursday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. rain likely. waves 4 to 7 ft occasionally to 9 ft building
to 5 to 8 ft occasionally to 10 ft. 
.friday...southwest winds to 30 kt becoming west. rain and snow
likely in the morning, then chance of snow and rain in the
afternoon. waves 8 to 11 ft occasionally to 14 ft. 
.friday night...west winds to 30 kt becoming northwest 15 to
25 kt. waves 8 to 11 ft occasionally to 14 ft. 
.saturday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 7 to 10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt. waves 8 to 12 ft occasionally
to 16 ft.  

$$

fzus63 kmqt 172101
glfls 
expires:202602180900;;803405

open lake forecast for lake superior
national weather service marquette mi
401 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 this afternoon 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 
wednesday 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-
401 pm est tue feb 17 2026 /301 pm cst tue feb 17 2026/

...gale warning in effect until 10 pm est /9 pm cst/ this
evening...
...storm warning in effect from 10 pm est /9 pm cst/ this evening
through wednesday evening...

.late this afternoon...east gales to 40 knots. waves 3 to 6 feet
occasionally to 8 feet building to 4 to 7 feet occasionally to
9 feet. 
.tonight...east gales to 45 knots increasing to storm force winds
to 55 knots late. a chance of snow in the evening, then snow,
possibly mixed with sleet after midnight. waves 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
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 172101
glfls 
expires:202602180900;;803406

open lake forecast for lake superior
national weather service marquette mi
401 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 this afternoon 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 
wednesday 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-
401 pm est tue feb 17 2026

...gale warning in effect from 1 am est wednesday through late
wednesday night...

.late this afternoon...east winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...east gales to 45 knots. a slight chance of snow in the
evening, then snow, possibly mixed with freezing rain and sleet
after midnight. waves 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. 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
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.

$$

fzus63 kmqt 172101
glfls 
expires:202602180900;;803407

open lake forecast for lake superior
national weather service marquette mi
401 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 this afternoon 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 
wednesday 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-
401 pm est tue feb 17 2026

...gale warning in effect from 1 am est wednesday through
thursday morning...

.late this afternoon...east winds 10 to 20 knots. waves 2 to
4 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
40 knots by midnight. freezing spray after midnight. a chance of
snow after midnight. waves 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. 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
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 172101
glfls 
expires:202602180900;;803408

open lake forecast for lake superior
national weather service marquette mi
401 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 this afternoon 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 
wednesday 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-
401 pm est tue feb 17 2026

...gale warning in effect from 1 am est wednesday through late
wednesday night...

.late this afternoon...east winds 15 to 25 knots. waves calm to
2 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
40 knots by midnight. snow likely after midnight. waves building
to 12 to 17 feet occasionally to 21 feet. 
.wednesday...east gales to 45 knots. 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 172101
glfls 
expires:202602180900;;803409

open lake forecast for lake superior
national weather service marquette mi
401 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 this afternoon 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 
wednesday 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-
401 pm est tue feb 17 2026

...gale warning in effect from 1 am est wednesday through late
wednesday night...

.late this afternoon...east winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.tonight...east winds 20 to 30 knots increasing to gales to
40 knots by midnight. freezing spray after midnight. a chance of
snow after midnight. waves 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. 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 building to
6 to 9 feet occasionally to 11 feet, then 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 172101
glfls 
expires:202602180900;;803410

open lake forecast for lake superior
national weather service marquette mi
401 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 this afternoon 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 
wednesday 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-
401 pm est tue feb 17 2026

...gale warning in effect from wednesday morning through
wednesday evening...

.late this afternoon...east winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...east winds 15 to 25 knots increasing to gales to
35 knots. freezing spray after midnight. a chance of snow after
midnight. waves building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...east gales to 40 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.

$$