fzus63 kdtx 301440
glflh 
expires:202511302245;;768525

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am est sun nov 30 2025

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, 29.70 inches, will lift northeast over
central lake huron sunday morning before departing for ontario by
afternoon. a period of northwest gales behind the low is expected
over much of lake huron late in the afternoon and early evening
hours. a gale warning is in effect for much of lake huron during
this time.


lhz361-302245-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 am est sun nov 30 2025

.rest of today...north winds 15 to 20 knots becoming northwest
20 to 25 knots with gusts to around 30 knots late in the
afternoon. snow late in the morning...then a chance of snow in
the afternoon. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tonight...northwest winds 20 to 25 knots with gusts to around
30 knots becoming west 5 to 10 knots. waves 5 to 7 feet subsiding
to 2 to 4 feet early in the morning. waves occasionally around
10 feet. 
.monday...west winds 5 to 10 knots becoming southwest 15 to
20 knots. a chance of snow in the afternoon. waves 1 to 3 feet
building to 3 to 5 feet early in the afternoon. 
.monday night...southwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. snow likely. waves 3 to 5 feet. 
.tuesday...west winds 10 to 15 knots becoming southwest 15 to
20 knots late in the evening. a chance of snow late in the
evening. waves 2 to 4 feet subsiding to 1 to 3 feet late in the
morning...then building to 2 to 4 feet late in the evening. 
.wednesday...southwest winds 15 to 20 knots becoming west 20 to
25 knots until early morning. a chance of snow early in the
morning...then snow until early evening. snow likely in the late
evening and early morning. waves 4 to 6 feet building to 6 to
9 feet until early morning. waves occasionally around 12 feet. 
.thursday...northwest winds 15 to 20 knots backing to the west in
the late evening and early morning. a chance of snow. waves 4 to
6 feet. waves occasionally around 8 feet. 


$$

fzus63 kdtx 301440
glflh 
expires:202511302245;;768526

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am est sun nov 30 2025

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, 29.70 inches, will lift northeast over
central lake huron sunday morning before departing for ontario by
afternoon. a period of northwest gales behind the low is expected
over much of lake huron late in the afternoon and early evening
hours. a gale warning is in effect for much of lake huron during
this time.


lhz362-363-462>464-302245-
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-
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-
940 am est sun nov 30 2025

...gale warning in effect from 2 pm est this afternoon through
this evening...

.rest of today...northeast winds 10 to 15 knots becoming north
15 to 20 knots early in the afternoon...then becoming west to
30 knots with gusts to 35 knot gales late in the afternoon. rain
and snow. waves 6 to 9 feet. waves occasionally around 12 feet. 
.tonight...northwest winds to 30 knots with gusts to 35 knot
gales becoming west 15 to 20 knots. a chance of snow in the
evening. waves 12 to 16 feet subsiding to 8 to 12 feet early in
the morning. waves occasionally around 20 feet. 
.monday...west winds 10 to 15 knots becoming southwest 15 to
20 knots early in the afternoon. waves 5 to 7 feet subsiding to
3 to 5 feet in the late morning and afternoon. waves occasionally
around 10 feet. 
.monday night...southwest winds 15 to 20 knots. snow likely.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.tuesday...west winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening. waves 3 to 5 feet building to 4 to 6 feet
late in the evening. waves occasionally around 8 feet. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots early in the evening...then
decreasing to 20 to 25 knots in the late evening and early
morning. a chance of snow early in the morning...then snow likely
until early morning. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.thursday...west winds to 30 knots decreasing to 20 to 25 knots
with gusts to around 30 knots. a chance of snow. waves 6 to
9 feet. waves occasionally around 12 feet. 


$$

fzus63 kmkx 301451
glflm 
expires:202511302230;;768758

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 am cst sun nov 30 2025

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...

low pressure of 29.6 inches located over lake huron this morning 
will continue to rapidly move northeastward over the quebec
province tonight. a gale warning remains in effect for lake
michigan through 3 pm. winds will gradually ease tonight and 
monday as high pressure around 30.6 inches builds across the great
lakes. another area of low pressure of around 29.5 inches will
quickly move across southern canada tuesday and wednesday,
bringing a cold front and a brief chance of light snow to the 
region. high pressure of 30.4 inches will then build into the 
great plains and midwest during the mid to late week time frame.


lmz261-362-364-366-563-565-567-868-302230-
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-
851 am cst sun nov 30 2025

sheboygan wi to pentwater mi north...

...gale warning in effect until 3 pm cst this afternoon...

.rest of today...north gales to 35 kt becoming northwest to
30 kt. chance of snow through mid morning, then slight chance of
snow this afternoon. waves 5 to 8 ft occasionally to 10 ft
building to 10 to 14 ft occasionally to 18 ft. 
.tonight...northwest winds to 30 kt becoming west 10 to 15 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 2 to 4 ft. 
.monday...west winds 10 to 20 kt becoming southwest to 30 kt.
chance of snow in the afternoon. waves 1 to 3 ft building to 4 to
6 ft occasionally to 8 ft. 
.monday night...west winds to 30 kt diminishing to 15 to 25 kt.
chance of snow. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.tuesday...west winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday night...southwest winds 15 to 25 kt increasing to 30 kt.
chance of snow. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...west winds to 30 kt becoming northwest. snow. waves
6 to 9 ft occasionally to 12 ft. 
.thursday...northwest winds 15 to 25 kt becoming west to 30 kt.
chance of snow. waves 6 to 9 ft occasionally to 12 ft subsiding
to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 301451
glflm 
expires:202511302230;;768759

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 am cst sun nov 30 2025

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...

low pressure of 29.6 inches located over lake huron this morning 
will continue to rapidly move northeastward over the quebec
province tonight. a gale warning remains in effect for lake
michigan through 3 pm. winds will gradually ease tonight and 
monday as high pressure around 30.6 inches builds across the great
lakes. another area of low pressure of around 29.5 inches will
quickly move across southern canada tuesday and wednesday,
bringing a cold front and a brief chance of light snow to the 
region. high pressure of 30.4 inches will then build into the 
great plains and midwest during the mid to late week time frame.


lmz080-669-671-673-675-777-779-870-872-874-876-878-302230-
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-
851 am cst sun nov 30 2025

sheboygan wi to pentwater mi south...

...gale warning in effect until 3 pm cst this afternoon...

.rest of today...northwest gales to 35 kt. rain likely with a
chance of snow through mid morning, then chance of snow this
afternoon. waves 7 to 10 ft occasionally to 13 ft building to
10 to 14 ft occasionally to 18 ft. 
.tonight...northwest winds to 30 kt diminishing to 5 to 10 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 3 to 5 ft. 
.monday...west winds 10 to 15 kt becoming southwest 10 to 20 kt.
chance of snow in the afternoon. waves 2 to 4 ft. 
.monday night...southwest winds 10 to 20 kt becoming west. snow
in the evening, then chance of snow overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.tuesday...northwest winds 10 to 20 kt becoming west. chance of
snow in the morning. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday night...southwest winds 10 to 20 kt increasing to 30 kt.
chance of snow. waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft. 
.wednesday...southwest winds to 30 kt becoming west. chance of
snow. waves 8 to 12 ft occasionally to 16 ft. 
.thursday...northwest winds 15 to 25 kt becoming west. waves
10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft.  

$$

fzus63 kmqt 301500
glfls 
expires:202511302100;;769135

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 30 2025

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 29.7 inch low pressure over lake huron tracks across georgian bay 
this afternoon while 30.6 inch high pressure expands over the 
northern plains. as the low quickly moves to the mouth of the st 
lawrence river monday morning, the high will weaken slightly to 30.5 
inches just southwest of the great lakes. this high weakens to 30.3 
inches over the lower great lakes monday evening while a weak 30.0 
inch trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz162-302100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sun nov 30 2025 /900 am cst sun nov 30 2025/

.rest of today...north winds 15 to 25 knots backing northwest. a
slight chance of snow showers late in the morning. waves 4 to
7 feet occasionally to 9 feet subsiding to 2 to 4 feet. 
.tonight...northwest winds 15 to 25 knots backing west by
midnight. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.monday...west winds 20 to 30 knots backing southwest. a slight
chance of snow showers in the afternoon. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of snow showers. waves
subsiding to calm to 2 feet. 
.tuesday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.tuesday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of snow showers in the evening, then
snow showers likely after midnight. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.wednesday...northwest winds 20 to 30 knots. a chance of snow
showers. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.thursday...west winds 20 to 30 knots becoming southwest gales to
35 knots. a chance of snow showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 301500
glfls 
expires:202511302100;;769136

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 30 2025

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 29.7 inch low pressure over lake huron tracks across georgian bay 
this afternoon while 30.6 inch high pressure expands over the 
northern plains. as the low quickly moves to the mouth of the st 
lawrence river monday morning, the high will weaken slightly to 30.5 
inches just southwest of the great lakes. this high weakens to 30.3 
inches over the lower great lakes monday evening while a weak 30.0 
inch trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz263-302100-
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 am est sun nov 30 2025

.rest of today...north winds 20 to 30 knots becoming northwest
15 to 25 knots by mid afternoon. a chance of snow showers. waves
5 to 8 feet occasionally to 10 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight, then increasing to 15 to 25 knots late. a
slight chance of snow showers after midnight. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.monday...west winds 20 to 30 knots becoming southwest to
30 knots with a few gale force gusts to 35 knots possible. a
slight chance of snow showers. waves building to 6 to 10 feet
occasionally to 13 feet. 
.monday night...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots veering west
after midnight. snow showers likely after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest gales to 35 knots. a chance of snow
showers. waves building to 4 to 8 feet occasionally to 10 feet. 
.thursday...west gales to 35 knots backing southwest. freezing
spray. a chance of snow showers. waves building to 6 to 10 feet
occasionally to 13 feet. 

$$

fzus63 kmqt 301500
glfls 
expires:202511302100;;769137

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 30 2025

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 29.7 inch low pressure over lake huron tracks across georgian bay 
this afternoon while 30.6 inch high pressure expands over the 
northern plains. as the low quickly moves to the mouth of the st 
lawrence river monday morning, the high will weaken slightly to 30.5 
inches just southwest of the great lakes. this high weakens to 30.3 
inches over the lower great lakes monday evening while a weak 30.0 
inch trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz264-302100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est sun nov 30 2025

.rest of today...north winds 20 to 30 knots backing northwest by
mid afternoon. a chance of snow showers. waves 4 to 7 feet
occasionally to 9 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight, then increasing to 15 to 25 knots late. a
slight chance of snow showers. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.monday...west winds to 30 knots with a few gale force gusts to
35 knots possible. a chance of snow showers. waves building to
7 to 10 feet occasionally to 13 feet. 
.monday night...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.tuesday...west winds 10 to 20 knots backing southwest in the
afternoon. a slight chance of snow showers in the morning. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of snow showers in the evening, then
snow showers likely after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...northwest gales to 35 knots. freezing spray. a
chance of snow showers. waves building to 6 to 10 feet
occasionally to 13 feet. 
.thursday...northwest gales to 35 knots backing southwest.
freezing spray. a chance of snow showers. waves subsiding to 4 to
7 feet occasionally to 9 feet, then building to 8 to 11 feet
occasionally to 14 feet. 

$$

fzus63 kmqt 301500
glfls 
expires:202511302100;;769138

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 30 2025

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 29.7 inch low pressure over lake huron tracks across georgian bay 
this afternoon while 30.6 inch high pressure expands over the 
northern plains. as the low quickly moves to the mouth of the st 
lawrence river monday morning, the high will weaken slightly to 30.5 
inches just southwest of the great lakes. this high weakens to 30.3 
inches over the lower great lakes monday evening while a weak 30.0 
inch trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz265-302100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est sun nov 30 2025

...gale warning in effect until 7 pm est this evening...

.rest of today...north gales to 35 knots backing northwest by mid
afternoon. snow showers likely late in the morning, then a chance
of snow showers in the afternoon. waves 8 to 11 feet occasionally
to 14 feet subsiding to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight, then backing west late. a slight chance of
snow showers. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.monday...southwest winds 20 to 30 knots. a chance of snow
showers. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.monday night...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a chance of snow showers. waves 2 to
4 feet. 
.tuesday...west winds 15 to 25 knots backing southwest in the
afternoon. a slight chance of snow showers in the morning. waves
subsiding to calm to 2 feet. 
.tuesday night...southwest winds 15 to 25 knots veering west
after midnight. snow showers likely after midnight. waves
building to 2 to 4 feet. 
.wednesday...northwest gales to 40 knots. snow showers. freezing
spray. waves building to 6 to 10 feet occasionally to 13 feet. 
.thursday...west gales to 35 knots backing southwest. a chance of
snow showers. waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 301500
glfls 
expires:202511302100;;769139

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 30 2025

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 29.7 inch low pressure over lake huron tracks across georgian bay 
this afternoon while 30.6 inch high pressure expands over the 
northern plains. as the low quickly moves to the mouth of the st 
lawrence river monday morning, the high will weaken slightly to 30.5 
inches just southwest of the great lakes. this high weakens to 30.3 
inches over the lower great lakes monday evening while a weak 30.0 
inch trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz266-302100-
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 am est sun nov 30 2025

...gale warning in effect until 9 pm est this evening...

.rest of today...north gales to 40 knots backing northwest by mid
afternoon. a chance of snow showers. waves 8 to 11 feet
occasionally to 14 feet subsiding to 7 to 10 feet occasionally to
13 feet. 
.tonight...northwest gales to 35 knots diminishing to 15 to
25 knots by midnight, then backing west late. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday...west winds 20 to 30 knots backing southwest. a chance
of snow showers. waves building to 7 to 10 feet occasionally to
13 feet. 
.monday night...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots backing southwest in the
afternoon. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.tuesday night...southwest winds 15 to 25 knots. snow showers
likely after midnight. waves building to 4 to 7 feet occasionally
to 9 feet. 
.wednesday...northwest gales to 40 knots. freezing spray. snow
showers. waves building to 10 to 14 feet occasionally to 18 feet.
.thursday...northwest gales to 35 knots backing southwest.
freezing spray. a chance of snow showers. waves subsiding to 6 to
9 feet occasionally to 11 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

$$

fzus63 kmqt 301500
glfls 
expires:202511302100;;769140

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 30 2025

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 29.7 inch low pressure over lake huron tracks across georgian bay 
this afternoon while 30.6 inch high pressure expands over the 
northern plains. as the low quickly moves to the mouth of the st 
lawrence river monday morning, the high will weaken slightly to 30.5 
inches just southwest of the great lakes. this high weakens to 30.3 
inches over the lower great lakes monday evening while a weak 30.0 
inch trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz267-302100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est sun nov 30 2025

...gale warning in effect until 7 pm est this evening...

.rest of today...north gales to 35 knots. a chance of snow
showers. waves 5 to 9 feet occasionally to 11 feet, then
subsiding to 5 to 8 feet occasionally to 10 feet. 
.tonight...north winds 20 to 30 knots becoming northwest 15 to
25 knots by midnight, then becoming west 10 to 20 knots late. a
chance of snow showers. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.monday night...southwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. snow showers likely. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest 10 to
20 knots in the afternoon. snow showers likely in the morning,
then a chance of snow showers in the afternoon. waves subsiding
to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of snow showers in the
evening, then snow showers likely after midnight. waves building
to 3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest gales to 35 knots. snow showers. freezing
spray. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet. 
.thursday...northwest winds 20 to 30 knots backing southwest.
freezing spray. snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

$$