fzus63 kdtx 302045
glflh 
expires:202512010445;;783346

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm 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...a trailing cold front offers a period of northwest
gales over much of lake huron late this afternoon into the early
evening hours. a gale warning is in effect during this time. high
pressure, 30.50 inches, then expands over the central great lakes
tonight through monday.


lhz361-010445-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
345 pm est sun nov 30 2025

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


$$

fzus63 kdtx 302045
glflh 
expires:202512010445;;783347

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm 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...a trailing cold front offers a period of northwest
gales over much of lake huron late this afternoon into the early
evening hours. a gale warning is in effect during this time. high
pressure, 30.50 inches, then expands over the central great lakes
tonight through monday.


lhz362-363-462>464-010445-
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-
345 pm est sun nov 30 2025

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

.tonight...northwest winds to 30 knots with gusts to 35 knot
gales decreasing to 10 to 15 knots. waves 10 to 14 feet subsiding
to 6 to 9 feet early in the morning. waves occasionally around
18 feet. 
.monday...west winds 5 to 10 knots backing to the southwest late
in the morning...then increasing to 10 to 15 knots in the
afternoon. waves 4 to 6 feet subsiding to 2 to 4 feet in the
afternoon. waves occasionally around 8 feet. 
.monday night...southwest winds 15 to 20 knots. snow likely in
the evening...then a chance of snow after midnight. waves 4 to
6 feet. waves occasionally around 8 feet. 
.tuesday...west winds 10 to 15 knots. waves 3 to 5 feet. 
.tuesday night...west winds 10 to 15 knots becoming southwest
20 to 25 knots. waves 2 to 4 feet building to 5 to 7 feet after
midnight. waves occasionally around 10 feet. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots with gusts to 35 knot gales late
in the morning...then becoming west 20 to 25 knots with gusts to
around 30 knots late in the afternoon. snow likely late in the
morning. a chance of snow late in the evening. 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 8 to
12 feet. waves occasionally around 15 feet. 
.friday...southwest winds 20 to 25 knots with gusts to around
30 knots becoming south 15 to 20 knots in the late evening and
early morning. a chance of snow. waves 8 to 12 feet. waves
occasionally around 15 feet. 


$$

fzus63 kmkx 302054
glflm 
expires:202512010415;;783613

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 pm 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 southern quebec/ontario 
this afternoon will continue to rapidly move northeastward over 
the quebec province tonight. a gale warning has been extended for 
lake michigan through 6 pm for continued gales. 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.


lmz261-362-364-366-563-565-567-868-010415-
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-
254 pm cst sun nov 30 2025

sheboygan wi to pentwater mi north...

...gale warning in effect until 6 pm cst this evening...

.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt
late this evening, then diminishing to 10 to 20 kt after midnight
becoming west 10 to 15 kt late. chance of snow and slight chance
of light freezing rain this evening. waves 7 to 10 ft
occasionally to 13 ft subsiding to 2 to 4 ft. 
.monday...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. 
.monday night...southwest winds to 30 kt becoming west 15 to
25 kt, then diminishing to 10 to 20 kt late. chance of snow in
the evening. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 2 to 4 ft. 
.tuesday night...southwest winds to 30 kt increasing to gales to
35 kt. chance of snow overnight. waves 4 to 6 ft occasionally to
8 ft building to 7 to 10 ft occasionally to 13 ft. 
.wednesday...west gales to 35 kt becoming northwest to 30 kt.
snow likely. waves 8 to 11 ft occasionally to 14 ft subsiding to
7 to 10 ft occasionally to 13 ft. 
.wednesday night...northwest gales to 35 kt. freezing spray.
chance of snow. waves 6 to 9 ft occasionally to 12 ft. 
.thursday...northwest winds to 30 kt becoming west. freezing
spray. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.friday...southwest winds to 30 kt. chance of snow. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 302054
glflm 
expires:202512010415;;783614

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
254 pm 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 southern quebec/ontario 
this afternoon will continue to rapidly move northeastward over 
the quebec province tonight. a gale warning has been extended for 
lake michigan through 6 pm for continued gales. 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010415-
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-
254 pm cst sun nov 30 2025

sheboygan wi to pentwater mi south...

...gale warning in effect until 6 pm cst this evening...

.tonight...northwest winds 15 to 25 kt diminishing to 5 to 10 kt.
slight chance of snow this evening. waves 8 to 12 ft occasionally
to 16 ft subsiding to 3 to 5 ft. 
.monday...west winds 5 to 10 kt becoming southwest 10 to 20 kt.
slight chance of snow in the morning, then chance of snow in the
afternoon. waves 2 to 4 ft. 
.monday night...southwest winds 10 to 20 kt veering to northwest.
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. waves 3 to 5 ft. 
.tuesday night...southwest winds 15 to 25 kt increasing to 30 kt.
chance of snow in the evening. waves 4 to 7 ft occasionally to
9 ft building to 8 to 12 ft occasionally to 16 ft. 
.wednesday...southwest gales to 35 kt becoming west to 30 kt.
chance of snow in the morning, then snow likely in the afternoon.
waves 10 to 14 ft occasionally to 18 ft. 
.wednesday night...northwest winds to 30 kt. freezing spray.
chance of snow. waves 8 to 11 ft occasionally to 14 ft building
to 8 to 12 ft occasionally to 16 ft. 
.thursday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. waves 8 to 12 ft occasionally to 16 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.friday...southwest winds to 30 kt. chance of snow. waves 8 to
12 ft occasionally to 16 ft.  

$$

fzus63 kmqt 302101
glfls 
expires:202512010900;;784088

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 southern ontario this afternoon 
continues east towards the mouth of the st. lawrence river tonight. 
meanwhile, a 30.6 inch high pressure over the northern plains 
weakens slightly to 30.5 inches as it dives towards the chicago area 
late tonight. this high continues to weaken to 30.4 inches over the 
lower great lakes monday evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz162-010900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sun nov 30 2025 /300 pm cst sun nov 30 2025/

.late this afternoon...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight, then increasing to 15 to 25 knots late.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.monday...west winds 15 to 25 knots backing southwest by mid
afternoon. isolated snow showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. a slight chance of snow showers. waves
subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a slight chance of snow showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tuesday night...southwest winds 15 to 25 knots veering west
after midnight. snow showers likely. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.wednesday...northwest winds 20 to 30 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.wednesday night...northwest winds 15 to 25 knots. waves
subsiding to 2 to 4 feet. 
.thursday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. a chance of snow showers. freezing spray. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.friday...west winds 10 to 20 knots veering northwest. a chance
of snow showers. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 302101
glfls 
expires:202512010900;;784089

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 southern ontario this afternoon 
continues east towards the mouth of the st. lawrence river tonight. 
meanwhile, a 30.6 inch high pressure over the northern plains 
weakens slightly to 30.5 inches as it dives towards the chicago area 
late tonight. this high continues to weaken to 30.4 inches over the 
lower great lakes monday evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz263-010900-
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 sun nov 30 2025

.late this afternoon...northwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots backing west by
midnight, then increasing to 15 to 25 knots late. isolated 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 backing southwest by mid
afternoon. isolated snow showers. waves building to 5 to 9 feet
occasionally to 11 feet. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots by 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. a slight chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 20 to 30 knots veering west
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 winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. a chance of snow showers. freezing
spray in the afternoon. waves building to 5 to 8 feet
occasionally to 10 feet. 
.wednesday night...northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. freezing spray. a chance of snow
showers. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday...west winds 20 to 30 knots backing southwest. freezing
spray. a chance of snow showers. waves building to 6 to 10 feet
occasionally to 13 feet. 
.friday...west winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 

$$

fzus63 kmqt 302101
glfls 
expires:202512010900;;784090

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 southern ontario this afternoon 
continues east towards the mouth of the st. lawrence river tonight. 
meanwhile, a 30.6 inch high pressure over the northern plains 
weakens slightly to 30.5 inches as it dives towards the chicago area 
late tonight. this high continues to weaken to 30.4 inches over the 
lower great lakes monday evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz264-010900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est sun nov 30 2025

.late this afternoon...northwest winds 15 to 25 knots. waves 5 to
8 feet occasionally to 10 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight, then increasing to 15 to 25 knots late.
scattered 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. scattered snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots by 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. a slight chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots 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 winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. a chance of snow showers. freezing
spray in the afternoon. waves building to 7 to 10 feet
occasionally to 13 feet. 
.wednesday night...northwest gales to 35 knots. heavy freezing
spray. a chance of snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.thursday...northwest winds 20 to 30 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. 
.friday...west winds 15 to 25 knots. a chance of snow showers.
waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 302101
glfls 
expires:202512010900;;784091

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 southern ontario this afternoon 
continues east towards the mouth of the st. lawrence river tonight. 
meanwhile, a 30.6 inch high pressure over the northern plains 
weakens slightly to 30.5 inches as it dives towards the chicago area 
late tonight. this high continues to weaken to 30.4 inches over the 
lower great lakes monday evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz265-010900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est sun nov 30 2025

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

.late this afternoon...northwest gales to 35 knots. scattered
snow showers. waves 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. isolated snow
showers. waves subsiding to 2 to 4 feet. 
.monday...southwest winds 20 to 30 knots veering west by late
morning, then backing southwest by mid afternoon. waves building
to 3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.monday night...southwest winds 20 to 30 knots becoming west
15 to 25 knots by midnight. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots 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 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 2 to 4 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. snow showers. waves building to
6 to 9 feet occasionally to 11 feet. 
.wednesday night...northwest gales to 40 knots. freezing spray.
snow showers likely. waves building to 6 to 10 feet occasionally
to 13 feet. 
.thursday...west winds 20 to 30 knots backing southwest. freezing
spray. a chance of snow showers. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.friday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. a chance of snow showers. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 302101
glfls 
expires:202512010900;;784092

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 southern ontario this afternoon 
continues east towards the mouth of the st. lawrence river tonight. 
meanwhile, a 30.6 inch high pressure over the northern plains 
weakens slightly to 30.5 inches as it dives towards the chicago area 
late tonight. this high continues to weaken to 30.4 inches over the 
lower great lakes monday evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz266-010900-
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 sun nov 30 2025

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

.late this afternoon...northwest gales to 35 knots. scattered
snow showers, possibly mixed with sleet. waves 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. scattered snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday...west winds 20 to 30 knots backing southwest by late
morning, then becoming west 15 to 25 knots by mid afternoon.
scattered snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet, then building to 6 to 9 feet occasionally
to 11 feet. 
.monday night...west winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. snow showers likely after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. snow showers. freezing spray in the
afternoon. waves building to 9 to 12 feet occasionally to
15 feet. 
.wednesday night...northwest gales to 35 knots. freezing spray.
snow showers. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.
.thursday...northwest winds 20 to 30 knots backing southwest.
freezing spray. a chance of snow showers. snow showers likely.
waves subsiding to 6 to 9 feet occasionally to 11 feet, then
building to 7 to 10 feet occasionally to 13 feet. 
.friday...southwest winds 15 to 25 knots veering west. a chance
of snow showers, then snow showers likely. waves subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 302101
glfls 
expires:202512010900;;784093

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 southern ontario this afternoon 
continues east towards the mouth of the st. lawrence river tonight. 
meanwhile, a 30.6 inch high pressure over the northern plains 
weakens slightly to 30.5 inches as it dives towards the chicago area 
late tonight. this high continues to weaken to 30.4 inches over the 
lower great lakes monday evening while a weak 30.0 inch trough 
descends over lake superior from northern ontario. as the trough 
deepens to 29.9 inches on tuesday, a 29.7 inch low dives through 
southern saskatchewan into the northern plains. the low weakens 
slightly to 29.8 inches tuesday evening as it approaches lake 
superior. by wednesday afternoon, the low deepens to 29.6 inches 
south of james bay while a 30.5 inch high builds over the high 
plains. the high shifts over the central plains thursday morning 
before moving between the great lakes and ohio river valley thursday 
evening. the high arrives over the mid-atlantic states on friday as 
troughing down to 29.7 inches develops over lake superior.



lsz267-010900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est sun nov 30 2025

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

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

$$