fzus63 kdtx 182059
glflh 
expires:202602190500;;861785

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 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...gusts to gales diminish for the northern half of lake
huron this afternoon and precipitation continues to taper off as
the line of rain/snow drifts into the northern great lakes. a 
brief lull ensues thursday, followed by potential for additional 
gusts to gales over northern lake huron friday.


lhz361-362-190500-
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-
359 pm est wed feb 18 2026

...gale watch in effect from late thursday night through friday
afternoon...

.tonight...east winds to 30 knots decreasing to 20 to 25 knots
after midnight. 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 after midnight. waves 8 to 12 feet
building to 10 to 14 feet after midnight. 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. snow and a chance
of rain in the morning...then rain and snow in the afternoon.
waves 10 to 14 feet. waves occasionally around 18 feet. 
.friday night...east winds 20 to 25 knots becoming north 15 to
20 knots in the late evening and overnight. a chance of snow in
the evening. waves 8 to 12 feet. waves occasionally around
15 feet. 
.saturday...north winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then becoming northeast 15 to
20 knots late in the evening. a chance of snow late in the
evening. waves 3 to 5 feet. 
.sunday...north winds 15 to 20 knots decreasing to 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots early in the evening increasing to 20 to 25 knots
by midnight. a chance of snow early in the morning. waves 4 to
6 feet building to 6 to 9 feet by midnight. waves occasionally
around 12 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 182059
glflh 
expires:202602190500;;861786

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 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...gusts to gales diminish for the northern half of lake
huron this afternoon and precipitation continues to taper off as
the line of rain/snow drifts into the northern great lakes. a 
brief lull ensues thursday, followed by potential for additional 
gusts to gales over northern lake huron friday.


lhz363-190500-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
359 pm est wed feb 18 2026

.tonight...east winds 15 to 20 knots decreasing to 10 to 15 knots
in the late evening and overnight. 
.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 kdtx 182059
glflh 
expires:202602190500;;861787

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 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...gusts to gales diminish for the northern half of lake
huron this afternoon and precipitation continues to taper off as
the line of rain/snow drifts into the northern great lakes. a 
brief lull ensues thursday, followed by potential for additional 
gusts to gales over northern lake huron friday.


lhz462>464-190500-
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-
359 pm est wed feb 18 2026

.tonight...southeast winds 10 to 15 knots. a chance of rain in
the evening. areas of fog in the evening. 
.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 kmkx 182051
glflm 
expires:202602190430;;861652

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
251 pm cst wed feb 18 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...

gusty east winds continue into this evening across lake michigan,
with a gale warning remaining in effect until 4 pm cst across the
northern half of the open waters. currently expect that the gale
warning will be able to expire as scheduled, but will continue to
monitor trends. winds will ease later tonight into thursday and 
become southerly as low pressure occludes near lake superior 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 lake michigan friday 
morning and gradually weaken through saturday. a few gale force
gusts are possible during the low's passage, with trends being
monitored for possible headlines in coming forecasts. gusty 
northerly winds are expected sunday into monday.


lmz261-362-364-366-563-565-567-868-190430-
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-
251 pm cst wed feb 18 2026

sheboygan wi to pentwater mi north...

...gale warning in effect until 4 pm cst this afternoon...

.tonight...southeast gusts to 30 kt. slight chance of rain, light
freezing rain and snow this evening, then slight chance of light 
freezing rain overnight. waves 5 to 8 ft occasionally to 10 ft 
subsiding to 3 to 5 ft. 
.thursday...south winds 15 to 25 kt backing to east. slight
chance of rain in the afternoon. waves 2 to 4 ft subsiding to
1 to 3 ft. 
.thursday night...east winds to 30 kt. a few gales to 35 kt
possible. chance of rain in the evening, then rain with a chance 
of freezing rain overnight. waves 4 to 6 ft occasionally to 8 ft 
building to 4 to 7 ft occasionally to 9 ft. 
.friday...southeast winds to 30 kt backing to northwest to 30 kt.
a few gales to 35 kt are possible. rain likely with snow in the 
morning, then rain and snow likely in the afternoon. waves 6 to 9 
ft occasionally to 12 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of snow showers in the evening. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday...northwest winds 10 to 20 kt. waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 4 to 6 ft occasionally to 8 ft
building to 6 to 9 ft occasionally to 12 ft. 
.sunday...north winds to 30 kt. waves 7 to 10 ft occasionally to
13 ft building to 8 to 11 ft occasionally to 14 ft. 
.monday...north winds to 30 kt diminishing to 15 to 25 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft.  

$$

fzus63 kmkx 182051
glflm 
expires:202602190430;;861653

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
251 pm cst wed feb 18 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...

gusty east winds continue into this evening across lake michigan,
with a gale warning remaining in effect until 4 pm cst across the
northern half of the open waters. currently expect that the gale
warning will be able to expire as scheduled, but will continue to
monitor trends. winds will ease later tonight into thursday and 
become southerly as low pressure occludes near lake superior 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 lake michigan friday 
morning and gradually weaken through saturday. a few gale force
gusts are possible during the low's passage, with trends being
monitored for possible headlines in coming forecasts. gusty 
northerly winds are expected sunday into monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-190430-
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-
251 pm cst wed feb 18 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.thursday...south winds 5 to 10 kt becoming southeast late in the
morning, then becoming east 10 to 15 kt early in the afternoon
increasing to 10 to 20 kt late. chance of rain in the afternoon.
waves 1 to 3 ft. 
.thursday night...east winds 10 to 20 kt veering to south 15 to
25 kt. rain in the evening, then rain likely overnight. waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.
.friday...southwest winds to 30 kt becoming west. a few gales to
35 kt possible. chance of rain and snow likely in the morning, 
then chance of rain and snow in the afternoon. waves 8 to 11 ft 
occasionally to 14 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 12 ft occasionally to 16 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 15 to 25 kt increasing to
30 kt. chance of snow. waves 4 to 7 ft occasionally to 9 ft
building to 7 to 10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt. chance of snow. waves 10 to
14 ft occasionally to 18 ft. 
.monday...north winds to 30 kt. waves 10 to 14 ft occasionally to
18 ft subsiding to 8 to 12 ft occasionally to 16 ft.  

$$

fzus63 kmqt 182101
glfls 
expires:202602190900;;861873

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed feb 18 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...

29.7 inch troughing persists over lake superior through thursday as 
a 29.3 inch low over minnesota this afternoon moves east to upper 
michigan and weakens to 29.6 inches through thursday morning. 
pressure then falls to around 29.5 inches over the lake for friday 
as a second 29.3 inch low over missouri thursday afternoon tracks to 
northern lake michigan by friday afternoon. pressure then rises 
saturday through monday as the low pressure dissipates over the 
great lakes and high pressure descends southeast into the region. 
pressure over the lake reaches at least 30.4 inches by monday night.



lsz162-190900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est wed feb 18 2026 /300 pm cst wed feb 18 2026/

...gale warning in effect until 1 am est /midnight cst/
thursday...

.late this afternoon...east gales to 45 knots. snow showers,
possibly mixed with sleet. waves 10 to 14 feet occasionally to
18 feet subsiding to 10 to 14 feet occasionally to 18 feet. 
.tonight...east gales to 45 knots. snow showers. waves subsiding
to 7 to 10 feet occasionally to 13 feet. 
.thursday...east gales to 35 knots diminishing to 20 to 30 knots
by late morning, then backing northeast by mid afternoon. snow
showers likely in the morning, then a chance of snow showers in
the afternoon. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.thursday night...northeast winds 20 to 30 knots. a chance of
snow. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...northeast winds 20 to 30 knots. a chance of snow. waves
building to 3 to 6 feet occasionally to 8 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. a chance of snow
showers. waves subsiding to calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots. a chance of
snow showers. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots veering north. waves
calm to 2 feet. 
.monday...north winds 5 to 15 knots veering east. waves calm to
2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202602190900;;861874

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed feb 18 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...

29.7 inch troughing persists over lake superior through thursday as 
a 29.3 inch low over minnesota this afternoon moves east to upper 
michigan and weakens to 29.6 inches through thursday morning. 
pressure then falls to around 29.5 inches over the lake for friday 
as a second 29.3 inch low over missouri thursday afternoon tracks to 
northern lake michigan by friday afternoon. pressure then rises 
saturday through monday as the low pressure dissipates over the 
great lakes and high pressure descends southeast into the region. 
pressure over the lake reaches at least 30.4 inches by monday night.



lsz263-190900-
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 pm est wed feb 18 2026

...gale warning in effect until 1 am est thursday...

.late this afternoon...east gales to 45 knots. snow showers,
possibly mixed with rain. waves 15 to 20 feet occasionally to
25 feet. 
.tonight...east gales to 45 knots. a chance of snow showers in
the evening, then snow showers after midnight. waves subsiding to
11 to 15 feet occasionally to 19 feet. 
.thursday...east gales to 35 knots diminishing to 20 to 30 knots.
snow showers in the morning, then a chance of snow showers in the
afternoon. waves subsiding to 8 to 11 feet occasionally to
14 feet. 
.thursday night...east winds 20 to 30 knots becoming northeast
gales to 35 knots late. a chance of snow. a slight chance of
freezing rain after midnight. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday...northeast winds 20 to 30 knots. a chance of snow. waves
subsiding to 5 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 10 to 20 knots backing northwest in the
afternoon. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.saturday night...northwest winds 10 to 20 knots veering north
after midnight. a chance of snow showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.sunday...northwest winds 10 to 20 knots veering north. waves
building to 3 to 6 feet occasionally to 8 feet. 
.monday...north winds 5 to 15 knots veering east. 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 182101
glfls 
expires:202602190900;;861875

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed feb 18 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...

29.7 inch troughing persists over lake superior through thursday as 
a 29.3 inch low over minnesota this afternoon moves east to upper 
michigan and weakens to 29.6 inches through thursday morning. 
pressure then falls to around 29.5 inches over the lake for friday 
as a second 29.3 inch low over missouri thursday afternoon tracks to 
northern lake michigan by friday afternoon. pressure then rises 
saturday through monday as the low pressure dissipates over the 
great lakes and high pressure descends southeast into the region. 
pressure over the lake reaches at least 30.4 inches by monday night.



lsz264-190900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est wed feb 18 2026

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

.late this afternoon...east gales to 45 knots. freezing spray.
snow showers. waves 15 to 20 feet occasionally to 25 feet. 
.tonight...east gales to 45 knots. snow showers. waves subsiding
to 11 to 15 feet occasionally to 19 feet. 
.thursday...east gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. snow showers in the morning, then a chance of
snow showers in the afternoon. waves subsiding to 8 to 11 feet
occasionally to 14 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 35 knots by midnight. a chance of snow. a slight chance of
freezing rain after midnight. waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.friday...east gales to 35 knots backing northeast in the
afternoon. a chance of snow. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.friday night...northeast winds 15 to 25 knots backing north
after midnight. freezing spray after midnight. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.saturday...north winds 10 to 20 knots. waves subsiding to 2 to
4 feet. 
.saturday night...north winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of snow showers. freezing spray
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...north winds 15 to 25 knots. heavy freezing spray. waves
building to 5 to 9 feet occasionally to 11 feet. 
.monday...north winds 15 to 25 knots diminishing to 10 to
20 knots. heavy freezing spray. 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 182101
glfls 
expires:202602190900;;861876

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed feb 18 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...

29.7 inch troughing persists over lake superior through thursday as 
a 29.3 inch low over minnesota this afternoon moves east to upper 
michigan and weakens to 29.6 inches through thursday morning. 
pressure then falls to around 29.5 inches over the lake for friday 
as a second 29.3 inch low over missouri thursday afternoon tracks to 
northern lake michigan by friday afternoon. pressure then rises 
saturday through monday as the low pressure dissipates over the 
great lakes and high pressure descends southeast into the region. 
pressure over the lake reaches at least 30.4 inches by monday night.



lsz265-190900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est wed feb 18 2026

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

.late this afternoon...east gales to 45 knots. snow showers,
possibly mixed with freezing rain. waves 15 to 20 feet
occasionally to 25 feet. 
.tonight...east gales to 40 knots. a chance of snow showers,
possibly mixed with freezing rain in the evening, then snow
showers likely after midnight. waves subsiding to 8 to 11 feet
occasionally to 14 feet. 
.thursday...east gales to 35 knots veering southeast by late
morning, then becoming east 20 to 30 knots by mid afternoon. snow
showers likely in the morning, then a slight chance of rain and
snow showers in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 35 knots by midnight. a slight chance of rain in the evening.
a chance of snow, possibly mixed with freezing rain. waves
building to 6 to 9 feet occasionally to 11 feet. 
.friday...east gales to 35 knots backing northeast in the
afternoon. snow likely. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 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. 
.saturday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.saturday night...northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots. waves building to 7 to
10 feet occasionally to 13 feet. 
.monday...north winds 15 to 25 knots becoming northwest 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202602190900;;861877

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed feb 18 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...

29.7 inch troughing persists over lake superior through thursday as 
a 29.3 inch low over minnesota this afternoon moves east to upper 
michigan and weakens to 29.6 inches through thursday morning. 
pressure then falls to around 29.5 inches over the lake for friday 
as a second 29.3 inch low over missouri thursday afternoon tracks to 
northern lake michigan by friday afternoon. pressure then rises 
saturday through monday as the low pressure dissipates over the 
great lakes and high pressure descends southeast into the region. 
pressure over the lake reaches at least 30.4 inches by monday night.



lsz266-190900-
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 pm est wed feb 18 2026

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

.late this afternoon...east gales to 45 knots. freezing spray.
snow showers, possibly mixed with freezing rain and sleet. waves
15 to 20 feet occasionally to 25 feet. 
.tonight...east gales to 45 knots. a slight chance of freezing
rain 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. a
slight chance of rain showers in the afternoon. waves subsiding
to 6 to 9 feet occasionally to 11 feet. 
.thursday night...east gales to 40 knots. a chance of freezing
rain and snow, possibly mixed with rain. 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. freezing rain likely, possibly
mixed with rain in the morning. snow likely. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.friday night...east winds 20 to 30 knots backing northeast after
midnight. a chance of snow showers. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.saturday...north winds 20 to 30 knots backing northwest in the
afternoon. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.saturday night...northwest winds 20 to 30 knots veering north
after midnight. a chance of snow showers. freezing spray after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.sunday...north winds 20 to 30 knots. heavy freezing spray. waves
building to 7 to 11 feet occasionally to 14 feet. 
.monday...north winds 15 to 25 knots. heavy freezing spray. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202602190900;;861878

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed feb 18 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...

29.7 inch troughing persists over lake superior through thursday as 
a 29.3 inch low over minnesota this afternoon moves east to upper 
michigan and weakens to 29.6 inches through thursday morning. 
pressure then falls to around 29.5 inches over the lake for friday 
as a second 29.3 inch low over missouri thursday afternoon tracks to 
northern lake michigan by friday afternoon. pressure then rises 
saturday through monday as the low pressure dissipates over the 
great lakes and high pressure descends southeast into the region. 
pressure over the lake reaches at least 30.4 inches by monday night.



lsz267-190900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est wed feb 18 2026

...gale warning in effect until 1 am est thursday...

.late this afternoon...east gales to 40 knots. freezing spray.
snow showers. waves 8 to 11 feet occasionally to 14 feet. 
.tonight...east gales to 40 knots veering southeast by midnight,
then backing east late. freezing spray. a slight chance of
freezing rain in the evening. a chance of snow showers. waves
subsiding to 6 to 9 feet occasionally to 11 feet. 
.thursday...east gales to 35 knots becoming southeast 20 to
30 knots. a chance of snow showers. a slight chance of rain
showers in the afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday night...east winds 20 to 30 knots increasing to gales
to 40 knots by midnight. a chance of rain, possibly mixed with
snow and freezing rain. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...east gales to 35 knots. freezing rain likely, possibly
mixed with rain in the morning. snow likely. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.friday night...east winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 2 to 4 feet. 
.saturday...northeast winds 15 to 25 knots backing northwest in
the afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves building to 2 to 4 feet. 
.sunday...north winds 15 to 25 knots. heavy freezing spray. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 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.

$$