fzus63 kdtx 091942
glflh 
expires:202609100345;;649904

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed sep 9 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...low pressure, 29.30 inches, will track across northern
ontario today, driving a slow moving cold front across the great
lakes region. this system will provide showers and few
thunderstorms to the lakes. high pressure will expand into the
region from the west thursday into friday.


lhz361-100345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
342 pm edt wed sep 9 2026

.tonight...west winds 15 to 20 knots becoming northwest 10 to
15 knots late in the evening...then increasing to 15 to 20 knots
after midnight. gusts to 30 knots. waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots becoming light
and variable. waves 1 to 3 feet. 
.friday...light and variable winds becoming south 5 to 10 knots
in the late morning and afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 2 to
4 feet. 
.saturday...south winds 10 to 15 knots becoming southwest 5 to
10 knots late in the afternoon...then veering to the northwest
late in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the afternoon. 
.sunday...west winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet . 
.monday...north winds 5 to 10 knots becoming east 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots with gusts to 35 knot gales early in the evening
becoming southeast 20 to 25 knots with gusts to 35 knot gales by
midnight. a chance of showers early in the morning. rain showers
likely until early evening...then showers by midnight. waves
2 feet or less building to 6 to 9 feet. waves occasionally around
12 feet. 


$$

fzus63 kdtx 091942
glflh 
expires:202609100345;;649905

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed sep 9 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...low pressure, 29.30 inches, will track across northern
ontario today, driving a slow moving cold front across the great
lakes region. this system will provide showers and few
thunderstorms to the lakes. high pressure will expand into the
region from the west thursday into friday.


lhz362-363-100345-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
342 pm edt wed sep 9 2026

.tonight...southwest winds 10 to 15 knots veering to the
northwest after midnight. a chance of waterspouts in the evening.
waves 3 to 5 feet. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the afternoon...then increasing to 10 to
15 knots late in the afternoon. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots decreasing to
northwest after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.friday...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then becoming
south 10 to 15 knots early in the afternoon. waves 2 feet or
less. 
.friday night...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then decreasing to 10 to 15 knots
late in the afternoon becoming west 5 to 10 knots late in the
evening. waves 3 to 5 feet. 
.sunday...northwest winds 5 to 10 knots becoming north 10 to
15 knots . waves 1 to 3 feet building to 3 to 5 feet . 
.monday...north winds 5 to 10 knots veering to the east in the
late morning and early afternoon...then becoming southeast 15 to
20 knots with gusts to around 30 knots early in the evening
increasing to 20 to 25 knots with gusts to 40 knot gales by
midnight. a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet until early evening...then building to 4 to 6 feet by
midnight. waves occasionally around 8 feet. 


$$

fzus63 kdtx 091942
glflh 
expires:202609100345;;649906

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm edt wed sep 9 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...low pressure, 29.30 inches, will track across northern
ontario today, driving a slow moving cold front across the great
lakes region. this system will provide showers and few
thunderstorms to the lakes. high pressure will expand into the
region from the west thursday into friday.


lhz462>464-100345-
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-
342 pm edt wed sep 9 2026

.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots by midnight...then veering to the northwest early in the
morning. waves 2 to 4 feet. 
.thursday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.thursday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.friday...west winds 5 to 10 knots early in the morning becoming
light and variable...then becoming southeast 5 to 10 knots early
in the afternoon. waves 2 feet or less. 
.friday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 2 feet or
less. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening. waves 2 to 4 feet. 
.sunday...northwest winds 5 to 10 knots becoming 10 to 15 knots
by midnight. waves 1 to 3 feet building to 2 to 4 feet by
midnight. 
.monday...northeast winds 10 to 15 knots veering to the southeast
early in the evening...then becoming south 20 to 25 knots with
gusts to around 30 knots by midnight. a chance of showers by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet early in the
evening...then building to 3 to 5 feet by midnight. 


$$

fzus63 kmkx 091937
glflm 
expires:202609100315;;649714

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 pm cdt wed sep 9 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...

shower & embedded thunderstorm chances will continue along/ahead 
of a passing cold front over the southern third of lake michigan
through the rest of this afternoon. severe weather is not 
expected. high pressure near 30.1 inches will build in from the 
northern great plains tonight, lingering through thursday night & 
bringing light and variable winds to the waters.

a new area of low pressure near 29.2 inches will shift from
central canada toward the hudson bay friday morning through the
day saturday, bringing increasing south-southwest winds followed
by a west-northwest wind shift behind a cold front. occasional 
wind gusts near gale force are possible during this time frame, 
though whether or not they will be widespread enough to warrant 
headlines remains uncertain. trends will continue to be monitored
through the end of this week. periods of showers and storms will 
accompany the approaching/passing front, with widespread severe 
weather not currently anticipated.

high pressure near 30.1 inches will shift from the northern great
plains across lake michigan saturday night through sunday night,
bringing light and variable winds. the next area of low pressure 
& cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms. 
depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. will be providing
additional details as this portion of the period draws closer.


lmz261-362-364-366-563-565-567-868-100315-
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-
237 pm cdt wed sep 9 2026

sheboygan wi to pentwater mi north...

.tonight...west winds to 30 kt becoming northwest 10 to 20 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.thursday...northwest winds 10 to 20 kt backing to southwest.
waves 1 to 3 ft. 
.thursday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 2 ft. 
.friday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.saturday...southwest winds to 30 kt. chance of showers in the
afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming north. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 20 kt. waves 1 to 2 ft. 
.monday...southeast winds to 30 kt becoming south gales to 35 kt.
showers likely. waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 091937
glflm 
expires:202609100315;;649715

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 pm cdt wed sep 9 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...

shower & embedded thunderstorm chances will continue along/ahead 
of a passing cold front over the southern third of lake michigan
through the rest of this afternoon. severe weather is not 
expected. high pressure near 30.1 inches will build in from the 
northern great plains tonight, lingering through thursday night & 
bringing light and variable winds to the waters.

a new area of low pressure near 29.2 inches will shift from
central canada toward the hudson bay friday morning through the
day saturday, bringing increasing south-southwest winds followed
by a west-northwest wind shift behind a cold front. occasional 
wind gusts near gale force are possible during this time frame, 
though whether or not they will be widespread enough to warrant 
headlines remains uncertain. trends will continue to be monitored
through the end of this week. periods of showers and storms will 
accompany the approaching/passing front, with widespread severe 
weather not currently anticipated.

high pressure near 30.1 inches will shift from the northern great
plains across lake michigan saturday night through sunday night,
bringing light and variable winds. the next area of low pressure 
& cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms. 
depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. will be providing
additional details as this portion of the period draws closer.


lmz080-669-671-673-675-777-779-870-872-874-876-878-100315-
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-
237 pm cdt wed sep 9 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 20 kt veering to northwest.
waves 2 to 4 ft. 
.thursday...north winds 10 to 15 kt. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt veering to south.
waves 1 to 2 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...south winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday...south winds 15 to 25 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...southeast winds to 30 kt becoming south gales to 40 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft building
to 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 091957
glfls 
expires:202609100800;;650126

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 9 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...

a 29.0 inch low over hudson bay this afternoon moves into northern 
quebec by early thursday, promoting a strong pressure gradient and 
gales over lake superior. ridging to 30.0 inches and subsequent 
calmer conditions follow from early thursday morning until friday 
morning, when a trough averaging 29.5 inches tracks from the great 
plains north toward hudson bay. a cold front passes through on 
saturday with. ridging in its wake reaching 30.0 inches by sunday.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
357 pm edt wed sep 9 2026 /257 pm cdt wed sep 9 2026/

...gale warning in effect until 6 pm edt /5 pm cdt/ this
evening...

.late this afternoon...west winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet subsiding to 2 to 4 feet. 
.tonight...west winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest in the
afternoon, then becoming south 10 to 20 knots late. waves calm to
2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then becoming southwest 15 to 25 knots
late. waves building to 1 to 3 feet. 
.friday...southwest winds 20 to 30 knots. a chance of showers and
a slight chance of thunderstorms by mid afternoon. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.friday night...south winds 20 to 30 knots veering southwest
after midnight. showers and a chance of thunderstorms. waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.saturday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming east 20 to
30 knots. a chance of showers. waves building to 2 to 4 feet. 
.monday...east gales to 40 knots becoming west gales to 35 knots.
showers. waves building to 5 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 091957
glfls 
expires:202609100800;;650127

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 9 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...

a 29.0 inch low over hudson bay this afternoon moves into northern 
quebec by early thursday, promoting a strong pressure gradient and 
gales over lake superior. ridging to 30.0 inches and subsequent 
calmer conditions follow from early thursday morning until friday 
morning, when a trough averaging 29.5 inches tracks from the great 
plains north toward hudson bay. a cold front passes through on 
saturday with. ridging in its wake reaching 30.0 inches by sunday.




lsz263-100800-
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-
357 pm edt wed sep 9 2026

...gale warning in effect until 10 pm edt this evening...

.late this afternoon...west gales to 35 knots. waves 7 to 10 feet
occasionally to 13 feet subsiding to 5 to 8 feet occasionally to
10 feet. 
.tonight...west winds 20 to 30 knots becoming northwest 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
waves subsiding to 1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots becoming southwest
10 to 20 knots in the afternoon. waves subsiding to calm to
2 feet. 
.thursday night...south winds 10 to 20 knots increasing to 20 to
30 knots. waves building to 2 to 4 feet. 
.friday...southwest gales to 35 knots. a slight chance of showers
and thunderstorms by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 20 to 30 knots veering southwest
after midnight. showers and a chance of thunderstorms. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet. 
.saturday...west winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...west winds 20 to 30 knots becoming northwest
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots becoming east 15 to 25 knots.
a chance of showers. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.monday...east gales to 35 knots becoming west gales to 40 knots.
showers. waves building to 7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 091957
glfls 
expires:202609100800;;650128

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 9 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...

a 29.0 inch low over hudson bay this afternoon moves into northern 
quebec by early thursday, promoting a strong pressure gradient and 
gales over lake superior. ridging to 30.0 inches and subsequent 
calmer conditions follow from early thursday morning until friday 
morning, when a trough averaging 29.5 inches tracks from the great 
plains north toward hudson bay. a cold front passes through on 
saturday with. ridging in its wake reaching 30.0 inches by sunday.




lsz264-100800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
357 pm edt wed sep 9 2026

...gale warning in effect until 10 pm edt this evening...

.late this afternoon...west gales to 40 knots. waves 8 to 11 feet
occasionally to 14 feet subsiding to 7 to 10 feet occasionally to
13 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 
.thursday...northwest winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.friday...southwest winds 20 to 30 knots. a slight chance of
showers by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 15 to 25 knots veering southwest
after midnight. a chance of showers through midnight. showers
after midnight. waves building to 3 to 5 feet occasionally to
7 feet. 
.saturday...west winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...west gales to 35 knots becoming northwest 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...southeast gales to 40 knots veering northwest. a chance
of showers, then showers likely. waves building to 7 to 11 feet
occasionally to 14 feet. 

$$

fzus63 kmqt 091957
glfls 
expires:202609100800;;650129

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 9 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...

a 29.0 inch low over hudson bay this afternoon moves into northern 
quebec by early thursday, promoting a strong pressure gradient and 
gales over lake superior. ridging to 30.0 inches and subsequent 
calmer conditions follow from early thursday morning until friday 
morning, when a trough averaging 29.5 inches tracks from the great 
plains north toward hudson bay. a cold front passes through on 
saturday with. ridging in its wake reaching 30.0 inches by sunday.




lsz265-100800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
357 pm edt wed sep 9 2026

...gale warning in effect until midnight edt tonight...

.late this afternoon...west gales to 45 knots. waves 5 to 9 feet
occasionally to 11 feet. 
.tonight...west gales to 35 knots becoming northwest 20 to
30 knots after midnight, then diminishing to 15 to 25 knots late.
waves subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing southeast late. waves
subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots. waves calm to 2 feet. 
.friday...southwest winds 20 to 30 knots becoming south 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.friday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. showers likely after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday...west gales to 35 knots. waves subsiding to 2 to
4 feet. 
.saturday night...west winds 20 to 30 knots. waves subsiding to
1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots becoming east 10 to
20 knots. a chance of showers. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.monday...southeast gales to 45 knots becoming west gales to
40 knots. showers. a chance of showers. waves building to 6 to
10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 091957
glfls 
expires:202609100800;;650130

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 9 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...

a 29.0 inch low over hudson bay this afternoon moves into northern 
quebec by early thursday, promoting a strong pressure gradient and 
gales over lake superior. ridging to 30.0 inches and subsequent 
calmer conditions follow from early thursday morning until friday 
morning, when a trough averaging 29.5 inches tracks from the great 
plains north toward hudson bay. a cold front passes through on 
saturday with. ridging in its wake reaching 30.0 inches by sunday.




lsz266-100800-
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-
357 pm edt wed sep 9 2026

...gale warning in effect until midnight edt tonight...

.late this afternoon...west gales to 40 knots. waves 8 to 11 feet
occasionally to 14 feet subsiding to 7 to 10 feet occasionally to
13 feet. 
.tonight...west gales to 35 knots becoming northwest 20 to
30 knots after midnight, then diminishing to 15 to 25 knots late.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.thursday night...south winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.friday...south winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday night...south winds 20 to 30 knots. showers likely after
midnight. waves building to 5 to 8 feet occasionally to 10 feet. 
.saturday...southwest winds 20 to 30 knots veering west by mid
afternoon. a chance of showers through early afternoon. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest
after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots becoming east 10 to
20 knots. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.monday...southeast gales to 40 knots becoming west gales to
45 knots. showers. waves building to 8 to 11 feet occasionally to
14 feet. 

$$

fzus63 kmqt 091957
glfls 
expires:202609100800;;650131

open lake forecast for lake superior
national weather service marquette mi
357 pm edt wed sep 9 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...

a 29.0 inch low over hudson bay this afternoon moves into northern 
quebec by early thursday, promoting a strong pressure gradient and 
gales over lake superior. ridging to 30.0 inches and subsequent 
calmer conditions follow from early thursday morning until friday 
morning, when a trough averaging 29.5 inches tracks from the great 
plains north toward hudson bay. a cold front passes through on 
saturday with. ridging in its wake reaching 30.0 inches by sunday.




lsz267-100800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
357 pm edt wed sep 9 2026

...gale warning in effect until 2 am edt thursday...

.late this afternoon...west gales to 40 knots. waves 7 to 10 feet
occasionally to 13 feet. 
.tonight...west gales to 35 knots veering northwest after
midnight, then diminishing to 20 to 30 knots late. waves building
to 8 to 11 feet occasionally to 14 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots backing south after
midnight, then increasing to 10 to 20 knots late. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.friday...south winds 15 to 25 knots. waves building to 2 to
4 feet. 
.friday night...south winds 20 to 30 knots. waves building to
4 to 7 feet occasionally to 9 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 15 to
25 knots by mid afternoon. a chance of showers. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. waves subsiding to 2 to 4 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...southeast winds 20 to 30 knots becoming west gales to
40 knots. showers and a chance of thunderstorms. waves building
to 6 to 10 feet occasionally to 13 feet. 

$$