fzus63 kdtx 082040
glflh 
expires:202512090445;;237791

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm est mon dec 8 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...high pressure, 30.40 inches, over central great lakes
this afternoon. the next low pressure system will track through
lake superior tonight into tuesday, leading to strong south-
southwest winds gusting to around 30 knots. an even stronger low,
29.30 inches, is on track to move through lower michigan on
wednesday bringing snow and rain.


lhz361-362-090445-
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-
340 pm est mon dec 8 2025

.tonight...south winds 10 to 15 knots increasing to 20 to
25 knots with gusts to around 30 knots. waves 1 to 3 feet
building to 6 to 9 feet. waves occasionally around 12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots late in the afternoon.
snow in the morning...then a chance of snow in the afternoon.
snow may be heavy at times in the morning. waves 8 to 12 feet.
waves occasionally around 15 feet. 
.tuesday night...west winds 10 to 15 knots becoming southwest
5 to 10 knots in the late evening and early morning...then
becoming south 10 to 15 knots after midnight. snow likely after
midnight. waves 4 to 6 feet. waves occasionally around 8 feet. 
.wednesday...northeast winds 15 to 20 knots becoming north 20 to
25 knots in the late morning and afternoon. snow likely in the
morning. waves 3 to 5 feet building to 8 to 12 feet in the late
morning and afternoon. waves occasionally around 15 feet. 
.wednesday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots in the late evening
and overnight. waves 6 to 9 feet. waves occasionally around
12 feet. 
.thursday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots
until early morning. a chance of snow. waves 4 to 6 feet building
to 6 to 9 feet in the late evening and early morning. waves
occasionally around 12 feet. 
.saturday...west winds 15 to 20 knots increasing to 20 to
25 knots until early evening...then becoming northwest 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 kdtx 082040
glflh 
expires:202512090445;;237792

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 pm est mon dec 8 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...high pressure, 30.40 inches, over central great lakes
this afternoon. the next low pressure system will track through
lake superior tonight into tuesday, leading to strong south-
southwest winds gusting to around 30 knots. an even stronger low,
29.30 inches, is on track to move through lower michigan on
wednesday bringing snow and rain.


lhz363-462>464-090445-
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-
340 pm est mon dec 8 2025

.tonight...southwest winds 10 to 15 knots becoming south 20 to
25 knots with gusts to around 30 knots. waves 1 to 3 feet
building to 5 to 7 feet. waves occasionally around 10 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots. snow in the morning...then a chance of snow in the
afternoon. snow may be heavy at times in the morning. waves 6 to
9 feet. waves occasionally around 12 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming south
10 to 15 knots after midnight. a chance of snow and rain in the
evening...then a chance of snow after midnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.wednesday...south winds 15 to 20 knots becoming north 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then increasing to 30 knots early in the
afternoon. snow in the morning...then a chance of snow in the
afternoon. waves 6 to 9 feet building to 10 to 14 feet early in
the afternoon. waves occasionally around 18 feet. 
.wednesday night...northwest winds to 30 knots with brief gusts 
to 35 knot gales decreasing to 20 to 25 knots with gusts to around
30 knots in the late evening and overnight. a chance of snow in 
the evening. waves 10 to 14 feet. waves occasionally around 18 
feet. 
.thursday...west winds 15 to 20 knots. a chance of snow late in
the morning. waves 5 to 7 feet. waves occasionally around
10 feet. 
.friday...west winds 15 to 20 knots increasing to 20 to 25 knots
in the late evening and early morning. a chance of snow. waves
4 to 6 feet building to 8 to 12 feet until early morning. waves
occasionally around 15 feet. 
.saturday...west winds 20 to 25 knots. gusts to 30 knots until
afternoon. a chance of snow. waves 8 to 12 feet. waves
occasionally around 15 feet. 


$$

fzus63 kmkx 082040
glflm 
expires:202512090430;;237821

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst mon dec 8 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 around 29.8 inches over northern north dakota will
deepen to 29.6 inches as it moves across lake superior on tuesday.
as a result, southwest gales are expected to develop for the 
north half of lake mi tonight. the winds will then gradually
weaken through the day on tuesday as the low moves away.  

a much stronger low around 29.2 inches will then track from
minnesota across southern lake mi and into lower mi tuesday night.
southwest to westerly gales may develop ahead of the low over the
south half of the lake tuesday night, followed by the potential
for northerly gales on wednesday after the low passes. a gale
watch is now in effect for the south half tuesday night and
wednesday. the brisk winds will then gradually diminish wednesday
night. a period of northwesterly gales may then return friday
night into saturday as a strong arctic front moves through the 
great lakes region. heavy freezing spray may develop. 



lmz261-362-364-366-563-565-090430-
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-
240 pm cst mon dec 8 2025

two rivers wi to manistee mi north...

...gale warning in effect from 10 pm cst this evening through
late tonight...

.tonight...south winds to 30 kt becoming southwest gales to
35 kt. chance of snow this evening, then snow and light freezing
drizzle overnight. waves 4 to 7 ft occasionally to 9 ft building
to 8 to 12 ft occasionally to 16 ft. 
.tuesday...southwest winds to 30 kt becoming west 15 to 25 kt
late in the morning, then diminishing to 10 to 20 kt early in the
afternoon becoming west 10 to 20 kt late. chance of snow and
light freezing drizzle in the morning, then slight chance of
light freezing rain in the afternoon. waves 8 to 11 ft
occasionally to 14 ft subsiding to 3 to 5 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming south late
in the evening, then becoming east 15 to 25 kt after midnight
becoming northeast to 30 kt late. chance of snow in the evening,
then snow overnight. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...north winds to 30 kt. chance of snow in the morning.
waves 8 to 11 ft occasionally to 14 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.thursday...northwest winds 10 to 20 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.thursday night...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.friday...west winds 10 to 20 kt increasing to 15 to 25 kt.
chance of snow showers. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow showers. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 082040
glflm 
expires:202512090430;;237822

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst mon dec 8 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 around 29.8 inches over northern north dakota will
deepen to 29.6 inches as it moves across lake superior on tuesday.
as a result, southwest gales are expected to develop for the 
north half of lake mi tonight. the winds will then gradually
weaken through the day on tuesday as the low moves away.  

a much stronger low around 29.2 inches will then track from
minnesota across southern lake mi and into lower mi tuesday night.
southwest to westerly gales may develop ahead of the low over the
south half of the lake tuesday night, followed by the potential
for northerly gales on wednesday after the low passes. a gale
watch is now in effect for the south half tuesday night and
wednesday. the brisk winds will then gradually diminish wednesday
night. a period of northwesterly gales may then return friday
night into saturday as a strong arctic front moves through the 
great lakes region. heavy freezing spray may develop. 



lmz567-868-090430-
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-
240 pm cst mon dec 8 2025

two rivers wi to manistee mi south to sheboygan wi to pentwater
mi...

...gale warning in effect from 10 pm cst this evening through
late tonight...
...gale watch in effect from tuesday evening through wednesday
afternoon...

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

$$

fzus63 kmkx 082040
glflm 
expires:202512090430;;237823

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst mon dec 8 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 around 29.8 inches over northern north dakota will
deepen to 29.6 inches as it moves across lake superior on tuesday.
as a result, southwest gales are expected to develop for the 
north half of lake mi tonight. the winds will then gradually
weaken through the day on tuesday as the low moves away.  

a much stronger low around 29.2 inches will then track from
minnesota across southern lake mi and into lower mi tuesday night.
southwest to westerly gales may develop ahead of the low over the
south half of the lake tuesday night, followed by the potential
for northerly gales on wednesday after the low passes. a gale
watch is now in effect for the south half tuesday night and
wednesday. the brisk winds will then gradually diminish wednesday
night. a period of northwesterly gales may then return friday
night into saturday as a strong arctic front moves through the 
great lakes region. heavy freezing spray may develop. 



lmz080-669-671-673-675-777-779-870-872-874-876-878-090430-
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-
240 pm cst mon dec 8 2025

sheboygan wi to pentwater mi south...

...gale watch in effect from tuesday evening through wednesday
afternoon...

.tonight...south winds 15 to 25 kt becoming southwest gales to
35 kt. chance of snow and light freezing rain overnight. waves
4 to 7 ft occasionally to 9 ft building to 8 to 11 ft
occasionally to 14 ft. 
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
chance of rain, snow and slight chance of light freezing rain in
the morning, then slight chance of light freezing rain in the
afternoon. waves 8 to 11 ft occasionally to 14 ft subsiding to
6 to 9 ft occasionally to 12 ft. 
.tuesday night...southwest winds to 30 kt becoming south gales to
35 kt late in the evening, then becoming southwest gales to 35 kt
after midnight becoming west late. rain and snow. waves 4 to 7 ft
occasionally to 9 ft building to 8 to 12 ft occasionally to 16 
ft.
.wednesday...northwest gales to 40 kt diminishing to gales to
35 kt. snow and rain in the morning, then chance of snow in the
afternoon. waves 12 to 16 ft occasionally to 21 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.thursday...northwest winds 10 to 20 kt. chance of snow showers
in the morning. waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft. 
.thursday night...northwest winds 10 to 20 kt becoming west.
chance of snow showers. waves 3 to 5 ft. 
.friday...west winds 15 to 25 kt increasing to 30 kt. chance of
snow showers. waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft. 
.saturday...northwest gales to 35 kt diminishing to 30 kt.
freezing spray. chance of snow showers. waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to
14 ft.  

$$

fzus63 kmqt 082101
glfls 
expires:202512090900;;238735

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon dec 8 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 30.4 inch high over the great lakes today will shift east to 
upstate new york this evening as a 29.8 inch low over the canadian 
prairie deepens to 29.6 inches while moving over lake superior by 
tuesday morning. a stronger 29.3 inch low moving out of the canadian 
rockies will cross lake michigan at 29.2 inches tuesday night, 
resulting in 29.5 inch troughing over lake superior into wednesday. 
this low will move into new england at 29.2 inches by wednesday 
night, allowing 30.5 inch high pressure to rebuild over the northern 
plains through friday and shift east towards the great lakes during 
the weekend.



lsz162-090900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est mon dec 8 2025 /300 pm cst mon dec 8 2025/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 082101
glfls 
expires:202512090900;;238736

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon dec 8 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 30.4 inch high over the great lakes today will shift east to 
upstate new york this evening as a 29.8 inch low over the canadian 
prairie deepens to 29.6 inches while moving over lake superior by 
tuesday morning. a stronger 29.3 inch low moving out of the canadian 
rockies will cross lake michigan at 29.2 inches tuesday night, 
resulting in 29.5 inch troughing over lake superior into wednesday. 
this low will move into new england at 29.2 inches by wednesday 
night, allowing 30.5 inch high pressure to rebuild over the northern 
plains through friday and shift east towards the great lakes during 
the weekend.



lsz263-090900-
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 mon dec 8 2025

.late this afternoon...southwest winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.tonight...south winds 15 to 25 knots becoming southwest 10 to
20 knots by midnight, then veering west late. snow likely. waves
building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. a slight chance of snow showers. waves subsiding to
calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots becoming northeast
20 to 30 knots by midnight. a chance of snow showers. freezing
spray after midnight. waves building to 7 to 10 feet occasionally
to 13 feet. 
.wednesday...north gales to 35 knots becoming northwest 15 to
25 knots in the afternoon. freezing spray in the morning. a
slight chance of snow. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.thursday...north winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.thursday night...northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...northwest gales to 35 knots. freezing spray. a chance
of snow showers. waves building to 5 to 9 feet occasionally to
11 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 082101
glfls 
expires:202512090900;;238737

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon dec 8 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 30.4 inch high over the great lakes today will shift east to 
upstate new york this evening as a 29.8 inch low over the canadian 
prairie deepens to 29.6 inches while moving over lake superior by 
tuesday morning. a stronger 29.3 inch low moving out of the canadian 
rockies will cross lake michigan at 29.2 inches tuesday night, 
resulting in 29.5 inch troughing over lake superior into wednesday. 
this low will move into new england at 29.2 inches by wednesday 
night, allowing 30.5 inch high pressure to rebuild over the northern 
plains through friday and shift east towards the great lakes during 
the weekend.



lsz264-090900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est mon dec 8 2025

.late this afternoon...southwest winds 10 to 20 knots. waves 2 to
4 feet building to 3 to 5 feet occasionally to 7 feet. 
.tonight...southwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. a chance of snow. waves 3 to 5 feet
occasionally to 7 feet. 
.tuesday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by late morning, then veering north by mid afternoon. a
chance of snow showers. waves subsiding to calm to 2 feet. 
.tuesday night...northeast winds 10 to 20 knots increasing to
20 to 30 knots. a chance of snow showers. freezing spray after
midnight. waves building to 7 to 10 feet occasionally to 13 feet.
.wednesday...north gales to 35 knots becoming northwest 15 to
25 knots in the afternoon. freezing spray. a slight chance of
snow. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.wednesday night...north winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.thursday...north winds 10 to 20 knots backing northwest in the
afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...northwest winds 10 to 20 knots. waves building
to 3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 20 to 30 knots increasing to gales to
35 knots. freezing spray. a chance of snow showers. waves
building to 8 to 11 feet occasionally to 14 feet. 
.saturday...northwest gales to 35 knots diminishing to 15 to
25 knots. freezing spray. waves subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 082101
glfls 
expires:202512090900;;238738

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon dec 8 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 30.4 inch high over the great lakes today will shift east to 
upstate new york this evening as a 29.8 inch low over the canadian 
prairie deepens to 29.6 inches while moving over lake superior by 
tuesday morning. a stronger 29.3 inch low moving out of the canadian 
rockies will cross lake michigan at 29.2 inches tuesday night, 
resulting in 29.5 inch troughing over lake superior into wednesday. 
this low will move into new england at 29.2 inches by wednesday 
night, allowing 30.5 inch high pressure to rebuild over the northern 
plains through friday and shift east towards the great lakes during 
the weekend.



lsz265-090900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est mon dec 8 2025

.late this afternoon...southwest winds 15 to 25 knots. waves 1 to
3 feet. 
.tonight...southwest winds 20 to 30 knots diminishing to 15 to
25 knots late. a slight chance of snow in the evening, then snow
likely after midnight. waves building to 2 to 4 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. a chance of snow showers. waves
subsiding to calm to 2 feet. 
.tuesday night...north winds 10 to 20 knots veering northeast by
midnight, then increasing to 20 to 30 knots late. a chance of
snow showers in the evening, then snow likely after midnight.
waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...north gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. a chance of snow. waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.wednesday night...northwest winds 20 to 30 knots. a chance of
snow showers. waves subsiding to 2 to 4 feet. 
.thursday...northwest winds 15 to 25 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 15 to 25 knots backing west
after midnight. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.friday...west gales to 35 knots becoming northwest gales to
40 knots. snow showers likely. freezing spray. waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 8 to
11 feet occasionally to 14 feet. 
.saturday...northwest gales to 35 knots diminishing to 20 to
30 knots. freezing spray. a chance of snow showers. waves
subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 082101
glfls 
expires:202512090900;;238739

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon dec 8 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 30.4 inch high over the great lakes today will shift east to 
upstate new york this evening as a 29.8 inch low over the canadian 
prairie deepens to 29.6 inches while moving over lake superior by 
tuesday morning. a stronger 29.3 inch low moving out of the canadian 
rockies will cross lake michigan at 29.2 inches tuesday night, 
resulting in 29.5 inch troughing over lake superior into wednesday. 
this low will move into new england at 29.2 inches by wednesday 
night, allowing 30.5 inch high pressure to rebuild over the northern 
plains through friday and shift east towards the great lakes during 
the weekend.



lsz266-090900-
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 mon dec 8 2025

.late this afternoon...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...southwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. a
chance of snow in the evening, then snow likely after midnight.
waves building to 6 to 9 feet occasionally to 11 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday...west winds 15 to 25 knots veering northwest by late
morning, then diminishing to 10 to 20 knots by mid afternoon.
snow showers likely in the morning, then a slight chance of snow
showers in the afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northeast winds 10 to 20 knots increasing to
20 to 30 knots. a chance of snow showers. waves subsiding to calm
to 2 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...north gales to 35 knots. freezing spray in the
morning. a chance of snow. waves building to 6 to 10 feet
occasionally to 13 feet. 
.wednesday night...northwest winds 20 to 30 knots. snow showers
likely in the evening. a chance of snow showers after midnight.
waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.thursday...north winds 15 to 25 knots backing northwest in the
afternoon. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.thursday night...northwest winds 15 to 25 knots. snow showers
likely. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday...west gales to 35 knots veering northwest. a chance of
snow showers, then snow showers. freezing spray. waves building
to 11 to 15 feet occasionally to 19 feet, then subsiding to 10 to
14 feet occasionally to 18 feet. 
.saturday...northwest gales to 35 knots diminishing to 20 to
30 knots. freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 082101
glfls 
expires:202512090900;;238740

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon dec 8 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 30.4 inch high over the great lakes today will shift east to 
upstate new york this evening as a 29.8 inch low over the canadian 
prairie deepens to 29.6 inches while moving over lake superior by 
tuesday morning. a stronger 29.3 inch low moving out of the canadian 
rockies will cross lake michigan at 29.2 inches tuesday night, 
resulting in 29.5 inch troughing over lake superior into wednesday. 
this low will move into new england at 29.2 inches by wednesday 
night, allowing 30.5 inch high pressure to rebuild over the northern 
plains through friday and shift east towards the great lakes during 
the weekend.



lsz267-090900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est mon dec 8 2025

.late this afternoon...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...southwest winds 20 to 30 knots backing south by
midnight, then veering southwest late. a chance of snow in the
evening, then snow likely after midnight. waves building to 4 to
8 feet occasionally to 10 feet. 
.tuesday...southwest winds 15 to 25 knots veering west. snow
showers in the morning, then a chance of snow showers in the
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots backing east by
midnight, then becoming northeast 15 to 25 knots late. a chance
of snow showers. waves subsiding to calm to 2 feet, then building
to 3 to 5 feet occasionally to 7 feet. 
.wednesday...north winds 20 to 30 knots. a chance of snow. waves
building to 5 to 8 feet occasionally to 10 feet. 
.wednesday night...north 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. 
.thursday...north winds 15 to 25 knots backing northwest in the
afternoon. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...west winds 15 to 25 knots becoming northwest 20 to
30 knots. snow showers. freezing spray. waves building to 8 to
12 feet occasionally to 15 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray. snow showers likely. waves subsiding to
3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$