fzus63 kdtx 072037
glflh 
expires:202512080445;;180480

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 pm est sun dec 7 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 the midwest will
build east and reach the central great lakes monday morning. the
next low pressure system will track through the northern great
lakes monday night into tuesday. an even stronger low, 29.30
inches, is on track to move through lower michigan on on
wednesday.


lhz361-362-080445-
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-
337 pm est sun dec 7 2025

.tonight...northwest winds 20 to 25 knots with gusts to around 30
knots becoming north 10 to 15 knots after midnight...then 
becoming northwest. waves 6 to 9 feet subsiding to 3 to 5 feet 
early in the morning. waves occasionally around 12 feet. 
.monday...west winds 5 to 10 knots becoming southwest 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.monday night...south winds 15 to 20 knots increasing to
30 knots. a chance of snow after midnight. waves 4 to 6 feet
building to 10 to 14 feet in the late evening and overnight.
waves occasionally around 18 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots early in the
afternoon. snow in the morning...then a chance of snow in the
afternoon. waves 10 to 14 feet. waves occasionally around
18 feet. 
.tuesday night...southwest winds 10 to 15 knots backing to the
south after midnight. a chance of snow. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.wednesday...east winds 15 to 20 knots becoming north 20 to
25 knots late in the morning...then backing to the northwest late
in the afternoon decreasing to 15 to 20 knots late in the
evening. snow likely in the morning. a chance of snow late in the
morning. waves 6 to 9 feet. waves occasionally around 12 feet. 
.thursday...northwest winds 10 to 15 knots. a chance of snow in
the late evening and early morning. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of snow. waves 4 to 6 feet building to 6 to
9 feet until early morning. waves occasionally around 12 feet. 


$$

fzus63 kdtx 072037
glflh 
expires:202512080445;;180481

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 pm est sun dec 7 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 the midwest will
build east and reach the central great lakes monday morning. the
next low pressure system will track through the northern great
lakes monday night into tuesday. an even stronger low, 29.30
inches, is on track to move through lower michigan on on
wednesday.


lhz363-462>464-080445-
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-
337 pm est sun dec 7 2025

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


$$

fzus63 kmkx 072057
glflm 
expires:202512080430;;181121

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 pm cst sun dec 7 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...

north-northwesterly winds will slowly diminish and becoming light
and variable tonight as high pressure around 30.5 inches builds 
across the great lakes region. high pressure exits monday 
afternoon as low pressure around 29.8 inches tracks through 
northern minnesota into lake superior, bringing stiff
southwesterly winds gusting to gale force. a gale watch is in 
effect late monday night into early tuesday morning. a few gusts
near 40 kt are possible over the far northern portions of the open
waters. as low pressure exits, expect winds to shift to become
westerly through the day tuesday. 

another low around 29.0 inches from the northern plains will shift
winds to south-southwest tuesday evening, before the low crosses
near the center of lake michigan and brings strong southwesterly
winds to the southern half and light easterly winds to the
northern half overnight tuesday. winds will all shift to
northwesterly as the low exits into wednesday, with gales 
possible in the southern half throughout this time frame. winds
gradually diminish wednesday night, but remain northwesterly
through the end of the week.



lmz261-362-364-366-563-565-567-868-080430-
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-
257 pm cst sun dec 7 2025

sheboygan wi to pentwater mi north...

...gale watch in effect from monday evening through late monday
night...

.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then diminishing to 5 to 10 kt after midnight
becoming west late. chance of snow showers overnight. waves 3 to
5 ft subsiding to 1 to 3 ft. 
.monday...southwest winds 10 to 15 kt increasing to 15 to 25 kt.
slight chance of snow showers in the morning, then chance of snow
showers in the afternoon. waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft. 
.monday night...southwest winds to 30 kt increasing to gales to
35 kt. chance of snow showers in the evening, then snow
overnight. waves 6 to 9 ft occasionally to 12 ft building to
12 to 16 ft occasionally to 21 ft. 
.tuesday...west winds to 30 kt diminishing to 15 to 25 kt. snow
likely in the morning, then chance of snow and rain in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft. 
.tuesday night...south winds 15 to 25 kt backing to east to
30 kt. snow and rain. waves 5 to 8 ft occasionally to 10 ft
building to 8 to 12 ft occasionally to 16 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. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.thursday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.friday...northwest winds to 30 kt increasing to gales to 35 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 072057
glflm 
expires:202512080430;;181122

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 pm cst sun dec 7 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...

north-northwesterly winds will slowly diminish and becoming light
and variable tonight as high pressure around 30.5 inches builds 
across the great lakes region. high pressure exits monday 
afternoon as low pressure around 29.8 inches tracks through 
northern minnesota into lake superior, bringing stiff
southwesterly winds gusting to gale force. a gale watch is in 
effect late monday night into early tuesday morning. a few gusts
near 40 kt are possible over the far northern portions of the open
waters. as low pressure exits, expect winds to shift to become
westerly through the day tuesday. 

another low around 29.0 inches from the northern plains will shift
winds to south-southwest tuesday evening, before the low crosses
near the center of lake michigan and brings strong southwesterly
winds to the southern half and light easterly winds to the
northern half overnight tuesday. winds will all shift to
northwesterly as the low exits into wednesday, with gales 
possible in the southern half throughout this time frame. winds
gradually diminish wednesday night, but remain northwesterly
through the end of the week.



lmz080-669-671-673-675-777-779-870-872-874-876-878-080430-
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-
257 pm cst sun dec 7 2025

sheboygan wi to pentwater mi south...

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

$$

fzus63 kmqt 072101
glfls 
expires:202512080900;;181382

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 7 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 30.5 inch high becoming centered over minnesota this afternoon 
slides over the great lakes basin tonight into monday as it weakens 
to 30.4 inches. by monday afternoon, a 29.7 inch low develops over 
north dakota, eventually moving over lake superior tuesday morning 
as it deepens to 29.5 inches. a second, stronger clipper low forms 
tuesday over the montana/canada border, absorbing the previous low 
tuesday night at 29.2 inches as it approaches lake michigan. the low 
lifts through southern ontario on wednesday while weak 30.1 inch 
ridging traverses the plains. the low quickly ejects past the st. 
lawrence seaway on thursday as high pressure over the canadian 
rockies builds to 30.9 inches, eventually dropping into the northern 
plains on friday.



lsz162-080900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sun dec 7 2025 /300 pm cst sun dec 7 2025/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 072101
glfls 
expires:202512080900;;181383

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 7 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 30.5 inch high becoming centered over minnesota this afternoon 
slides over the great lakes basin tonight into monday as it weakens 
to 30.4 inches. by monday afternoon, a 29.7 inch low develops over 
north dakota, eventually moving over lake superior tuesday morning 
as it deepens to 29.5 inches. a second, stronger clipper low forms 
tuesday over the montana/canada border, absorbing the previous low 
tuesday night at 29.2 inches as it approaches lake michigan. the low 
lifts through southern ontario on wednesday while weak 30.1 inch 
ridging traverses the plains. the low quickly ejects past the st. 
lawrence seaway on thursday as high pressure over the canadian 
rockies builds to 30.9 inches, eventually dropping into the northern 
plains on friday.



lsz263-080900-
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 dec 7 2025

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 072101
glfls 
expires:202512080900;;181384

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 7 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 30.5 inch high becoming centered over minnesota this afternoon 
slides over the great lakes basin tonight into monday as it weakens 
to 30.4 inches. by monday afternoon, a 29.7 inch low develops over 
north dakota, eventually moving over lake superior tuesday morning 
as it deepens to 29.5 inches. a second, stronger clipper low forms 
tuesday over the montana/canada border, absorbing the previous low 
tuesday night at 29.2 inches as it approaches lake michigan. the low 
lifts through southern ontario on wednesday while weak 30.1 inch 
ridging traverses the plains. the low quickly ejects past the st. 
lawrence seaway on thursday as high pressure over the canadian 
rockies builds to 30.9 inches, eventually dropping into the northern 
plains on friday.



lsz264-080900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est sun dec 7 2025

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 072101
glfls 
expires:202512080900;;181385

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 7 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 30.5 inch high becoming centered over minnesota this afternoon 
slides over the great lakes basin tonight into monday as it weakens 
to 30.4 inches. by monday afternoon, a 29.7 inch low develops over 
north dakota, eventually moving over lake superior tuesday morning 
as it deepens to 29.5 inches. a second, stronger clipper low forms 
tuesday over the montana/canada border, absorbing the previous low 
tuesday night at 29.2 inches as it approaches lake michigan. the low 
lifts through southern ontario on wednesday while weak 30.1 inch 
ridging traverses the plains. the low quickly ejects past the st. 
lawrence seaway on thursday as high pressure over the canadian 
rockies builds to 30.9 inches, eventually dropping into the northern 
plains on friday.



lsz265-080900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est sun dec 7 2025

.late this afternoon...northwest winds 15 to 25 knots. flurries.
waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to
4 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight. flurries. waves subsiding to calm to
2 feet. 
.monday...southwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 1 to 3 feet. 
.monday night...southwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight, then veering west late. snow showers.
waves building to 2 to 4 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. a 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 after midnight. snow showers likely. 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 showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.wednesday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.thursday...northwest winds 15 to 25 knots. snow showers likely.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.friday...northwest winds 20 to 30 knots increasing to gales to
40 knots. snow showers. freezing spray. waves building to 7 to
11 feet occasionally to 14 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 072101
glfls 
expires:202512080900;;181386

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 7 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 30.5 inch high becoming centered over minnesota this afternoon 
slides over the great lakes basin tonight into monday as it weakens 
to 30.4 inches. by monday afternoon, a 29.7 inch low develops over 
north dakota, eventually moving over lake superior tuesday morning 
as it deepens to 29.5 inches. a second, stronger clipper low forms 
tuesday over the montana/canada border, absorbing the previous low 
tuesday night at 29.2 inches as it approaches lake michigan. the low 
lifts through southern ontario on wednesday while weak 30.1 inch 
ridging traverses the plains. the low quickly ejects past the st. 
lawrence seaway on thursday as high pressure over the canadian 
rockies builds to 30.9 inches, eventually dropping into the northern 
plains on friday.



lsz266-080900-
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 dec 7 2025

...gale watch in effect from monday evening through late monday
night...

.late this afternoon...northwest winds 20 to 30 knots. a slight
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 late. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.monday...southwest winds 10 to 20 knots increasing to 20 to
30 knots. flurries in the morning. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday night...southwest gales to 35 knots diminishing to 20 to
30 knots by midnight. a chance of snow showers in the evening,
then snow showers 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 becoming northwest 10 to
20 knots in the afternoon. snow showers in the morning, then a
chance of snow showers in the afternoon. waves subsiding to 2 to
4 feet. 
.tuesday night...northeast winds 10 to 20 knots increasing to
20 to 30 knots after midnight. snow showers. waves subsiding to
1 to 3 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 showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday night...northwest 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...northwest winds 15 to 25 knots. a chance of snow
showers, then snow showers likely. waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots increasing to 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. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 072101
glfls 
expires:202512080900;;181387

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 7 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 30.5 inch high becoming centered over minnesota this afternoon 
slides over the great lakes basin tonight into monday as it weakens 
to 30.4 inches. by monday afternoon, a 29.7 inch low develops over 
north dakota, eventually moving over lake superior tuesday morning 
as it deepens to 29.5 inches. a second, stronger clipper low forms 
tuesday over the montana/canada border, absorbing the previous low 
tuesday night at 29.2 inches as it approaches lake michigan. the low 
lifts through southern ontario on wednesday while weak 30.1 inch 
ridging traverses the plains. the low quickly ejects past the st. 
lawrence seaway on thursday as high pressure over the canadian 
rockies builds to 30.9 inches, eventually dropping into the northern 
plains on friday.



lsz267-080900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est sun dec 7 2025

.late this afternoon...northwest winds 20 to 30 knots. a chance
of snow showers. waves 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.monday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. a chance of snow showers in the morning. waves building
to 3 to 6 feet occasionally to 8 feet. 
.monday night...southwest winds 20 to 30 knots. snow showers.
waves building to 4 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 15 to 25 knots. snow showers. waves
subsiding to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. snow showers likely. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...north winds 20 to 30 knots. a chance of snow
showers. waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday night...northwest winds 15 to 25 knots. a chance of
snow showers. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.thursday...northwest winds 15 to 25 knots veering north. a
chance of snow showers, then snow showers likely. waves subsiding
to 2 to 4 feet, then building to 3 to 5 feet occasionally to
7 feet. 
.friday...northwest winds 15 to 25 knots becoming north 20 to
30 knots. snow showers likely. freezing spray. waves building to
7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$