fzus63 kdtx 092042
glflh 
expires:202512100445;;295108

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm est tue dec 9 2025

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...low pressure, 29.30 inches, tracking through the
western great lakes tonight will move through southern lower
michigan on wednesday bringing mostly snow and some rain. a
period of gales is likely behind the low passage wednesday
afternoon into wednesday night over much of southern lake huron.


lhz361-362-100445-
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-
342 pm est tue dec 9 2025

.tonight...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the evening...then becoming south 5 to 10 knots
after midnight backing to the northeast early in the morning.
waves 5 to 7 feet subsiding to 2 to 4 feet. waves occasionally
around 10 feet. 
.wednesday...northeast winds 10 to 15 knots becoming north 15 to
20 knots with gusts to around 30 knots in the late morning and
early afternoon...then increasing to 20 to 25 knots with gusts to
around 30 knots late in the afternoon. a chance of snow 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. gusts to
30 knots until early morning. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.thursday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots in the late evening and overnight. waves 4 to
6 feet. waves occasionally around 8 feet. 
.friday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. snow likely late in the afternoon. a chance of snow
late in the evening. waves 2 to 4 feet building to 5 to 7 feet
late in the afternoon. waves occasionally around 10 feet. 
.saturday...west winds 20 to 25 knots becoming northwest 15 to
20 knots in the late evening and early morning. a chance of snow.
freezing spray until early morning. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.sunday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and early morning. a chance of snow
early in the morning. waves 4 to 6 feet. 


$$

fzus63 kdtx 092042
glflh 
expires:202512100445;;295109

open lake forecast for lake huron
national weather service detroit/pontiac mi
342 pm est tue dec 9 2025

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...low pressure, 29.30 inches, tracking through the
western great lakes tonight will move through southern lower
michigan on wednesday bringing mostly snow and some rain. a
period of gales is likely behind the low passage wednesday
afternoon into wednesday night over much of southern lake huron.


lhz363-462>464-100445-
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-
342 pm est tue dec 9 2025

...gale warning in effect from wednesday morning through late
wednesday night...

.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening...then decreasing to 5 to 10 knots
after midnight becoming southeast 10 to 15 knots early in the
morning. snow after midnight. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.wednesday...northeast winds 10 to 15 knots becoming north 20 to
25 knots with gusts to 35 knot gales in the late morning early 
afternoon...then increasing to 30 knots with gusts to 35 knot 
gales late in the afternoon. snow in the morning. waves 5 to 7 
feet building to 10 to 14 feet in the afternoon. waves 
occasionally around 18 feet. 
.wednesday night...northwest winds to 30 knots with gusts to 35 
knot gales. a chance of snow. waves 10 to 14 feet. waves 
occasionally around 18 feet. a gale warning may be needed. 
.thursday...west winds 20 to 25 knots. gusts to 30 knots until
late afternoon. a chance of snow in the afternoon. waves 6 to
9 feet. waves occasionally around 12 feet. 
.thursday night...west winds 20 to 25 knots decreasing to 15 to
20 knots in the late evening and overnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.friday...west winds 10 to 15 knots becoming southwest 20 to
25 knots. a chance of snow late in the evening. waves 3 to 5 feet
building to 6 to 9 feet. waves occasionally around 12 feet. 
.saturday...west winds to 30 knots decreasing to 20 to 25 knots
with gusts to around 30 knots. a chance of snow. waves 6 to
9 feet. waves occasionally around 12 feet. 
.sunday...west winds 20 to 25 knots becoming northwest 15 to
20 knots in the late evening and early morning. a chance of snow
until afternoon. waves 5 to 7 feet. waves occasionally around
10 feet. 


$$

fzus63 kmkx 092040
glflm 
expires:202512100415;;295104

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst tue dec 9 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 29.2 inches will track from minnesota across 
southern lake michigan and into lower michigan tonight. southwest
to westerly gales will develop ahead of the low over the southern
third of the lake tonight, followed by northwest to northerly 
gales expanding across the southern two thirds of the lake as the 
low passes early wednesday morning. 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 also develop.


lmz261-362-364-563-100415-
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 rock island passage to sturgeon bay wi-
240 pm cst tue dec 9 2025

sturgeon bay wi to point betsie mi north...

.tonight...southwest winds 5 to 10 kt backing to southeast 10 to
15 kt late this evening, then becoming east 15 to 25 kt after
midnight becoming northeast to 30 kt late. chance of snow. waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft. 
.wednesday...north winds to 30 kt becoming northwest. slight
chance of snow in the morning. waves 7 to 10 ft occasionally to
13 ft. 
.wednesday night...northwest winds to 30 kt. chance of snow in 
the evening. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 
to 7 ft occasionally to 9 ft. 
.thursday...northwest winds to 30 kt diminishing to 10 to 20 kt
in the afternoon. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 1 to 3 ft. 
.friday...west winds 10 to 20 kt. chance of snow in the
afternoon. waves 1 to 2 ft building to 3 to 5 ft. 
.friday night...west winds to 30 kt becoming northwest. chance of
snow. waves 6 to 9 ft occasionally to 12 ft. 
.saturday...northwest winds to 30 kt. chance of snow. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.sunday...northwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 092040
glflm 
expires:202512100415;;295105

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst tue dec 9 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 29.2 inches will track from minnesota across 
southern lake michigan and into lower michigan tonight. southwest
to westerly gales will develop ahead of the low over the southern
third of the lake tonight, followed by northwest to northerly 
gales expanding across the southern two thirds of the lake as the 
low passes early wednesday morning. 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 also develop.


lmz366-565-567-669-671-868-870-872-100415-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 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 pentwater to manistee mi 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-
240 pm cst tue dec 9 2025

sturgeon bay wi to point betsie mi south to north point light wi
to grand haven mi...

...gale warning in effect from late tonight through wednesday
afternoon...

.tonight...south winds 15 to 25 kt increasing to 30 kt late this
evening, then increasing to gales to 35 kt after midnight veering
to north late. snow and rain. waves 3 to 5 ft building to 7 to
10 ft occasionally to 13 ft. 
.wednesday...north gales to 40 kt becoming northwest gales to
35 kt. slight chance of rain and snow in the morning, then slight
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 8 to 12 ft occasionally to 16 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.thursday...northwest winds 10 to 20 kt becoming west. waves 5 to
8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.thursday night...west winds 10 to 15 kt. chance of snow
overnight. waves 2 to 4 ft. 
.friday...west winds 10 to 20 kt increasing to 30 kt in the
afternoon. chance of snow. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.friday night...west winds to 30 kt becoming northwest. freezing
spray. chance of snow. waves 8 to 12 ft occasionally to 16 ft
building to 10 to 14 ft occasionally to 18 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to
11 ft occasionally to 14 ft. 
.sunday...northwest winds to 30 kt diminishing to 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 092101
glfls 
expires:202512100900;;295819

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 9 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 29.5 inch trough of low pressure will persist over lake superior 
through wednesday morning as a 29.2 inch low currently over north 
dakota crosses southern lake michigan tonight. 29.6 to 29.7 inch 
troughing lingers over lake superior through wednesday as the low 
moves into southern quebec at 29.1 inches by wednesday night. this 
will allow 30.3 inch high pressure to rebuild over the northern 
plains late wednesday through thursday while extending weak ridging 
over lake superior. ridging breaks down slightly early friday, but 
quickly rebuilds as 30.5 inch high pressure over the northern plains 
extends back into the great lakes this weekend.



lsz162-100900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est tue dec 9 2025 /300 pm cst tue dec 9 2025/

.late this afternoon...east winds 10 to 20 knots. a slight chance
of snow. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots becoming northeast 20 to
30 knots by midnight. a chance of snow. freezing spray after
midnight. waves building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...north winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then backing northwest by mid
afternoon. freezing spray in the morning. 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 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming northwest 20 to
30 knots in the afternoon. snow showers likely. waves building to
3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 20 to 30 knots. waves building to
3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.saturday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots backing southwest. a
chance of snow showers. waves building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 092101
glfls 
expires:202512100900;;295820

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 9 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 29.5 inch trough of low pressure will persist over lake superior 
through wednesday morning as a 29.2 inch low currently over north 
dakota crosses southern lake michigan tonight. 29.6 to 29.7 inch 
troughing lingers over lake superior through wednesday as the low 
moves into southern quebec at 29.1 inches by wednesday night. this 
will allow 30.3 inch high pressure to rebuild over the northern 
plains late wednesday through thursday while extending weak ridging 
over lake superior. ridging breaks down slightly early friday, but 
quickly rebuilds as 30.5 inch high pressure over the northern plains 
extends back into the great lakes this weekend.



lsz263-100900-
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 tue dec 9 2025

...gale warning in effect from 4 am est wednesday through
wednesday morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 092101
glfls 
expires:202512100900;;295821

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 9 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 29.5 inch trough of low pressure will persist over lake superior 
through wednesday morning as a 29.2 inch low currently over north 
dakota crosses southern lake michigan tonight. 29.6 to 29.7 inch 
troughing lingers over lake superior through wednesday as the low 
moves into southern quebec at 29.1 inches by wednesday night. this 
will allow 30.3 inch high pressure to rebuild over the northern 
plains late wednesday through thursday while extending weak ridging 
over lake superior. ridging breaks down slightly early friday, but 
quickly rebuilds as 30.5 inch high pressure over the northern plains 
extends back into the great lakes this weekend.



lsz264-100900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est tue dec 9 2025

...gale warning in effect from 4 am est wednesday through
wednesday morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 092101
glfls 
expires:202512100900;;295822

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 9 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 29.5 inch trough of low pressure will persist over lake superior 
through wednesday morning as a 29.2 inch low currently over north 
dakota crosses southern lake michigan tonight. 29.6 to 29.7 inch 
troughing lingers over lake superior through wednesday as the low 
moves into southern quebec at 29.1 inches by wednesday night. this 
will allow 30.3 inch high pressure to rebuild over the northern 
plains late wednesday through thursday while extending weak ridging 
over lake superior. ridging breaks down slightly early friday, but 
quickly rebuilds as 30.5 inch high pressure over the northern plains 
extends back into the great lakes this weekend.



lsz265-100900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est tue dec 9 2025

...gale warning in effect wednesday morning...

.late this afternoon...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...north winds 10 to 20 knots veering northeast by
midnight, then increasing to 20 to 30 knots late. a chance of
snow. waves building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...north gales to 40 knots becoming northwest gales to
35 knots by mid afternoon. a chance of snow showers. waves
building to 6 to 10 feet occasionally to 13 feet. 
.wednesday night...northwest gales to 35 knots diminishing to
20 to 30 knots by 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 slight chance of
snow showers. waves subsiding to 1 to 3 feet. 
.thursday night...northwest winds 10 to 20 knots backing west
after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. a chance of snow showers in the morning, then
snow showers likely in the afternoon. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday night...northwest gales to 40 knots. freezing spray. snow
showers likely. waves building to 7 to 10 feet occasionally to
13 feet. 
.saturday...northwest gales to 40 knots. freezing spray. snow
showers likely. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.sunday...northwest winds 20 to 30 knots becoming west 15 to
25 knots. a chance of snow showers. waves subsiding to 1 to
3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 092101
glfls 
expires:202512100900;;295823

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 9 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 29.5 inch trough of low pressure will persist over lake superior 
through wednesday morning as a 29.2 inch low currently over north 
dakota crosses southern lake michigan tonight. 29.6 to 29.7 inch 
troughing lingers over lake superior through wednesday as the low 
moves into southern quebec at 29.1 inches by wednesday night. this 
will allow 30.3 inch high pressure to rebuild over the northern 
plains late wednesday through thursday while extending weak ridging 
over lake superior. ridging breaks down slightly early friday, but 
quickly rebuilds as 30.5 inch high pressure over the northern plains 
extends back into the great lakes this weekend.



lsz266-100900-
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 tue dec 9 2025

...gale warning in effect from wednesday morning through
wednesday evening...

.late this afternoon...northwest winds 10 to 20 knots. a slight
chance of snow showers. waves 1 to 3 feet. 
.tonight...north winds 10 to 20 knots becoming northeast 15 to
25 knots by midnight, then increasing to gales to 35 knots late.
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 40 knots backing northwest by mid
afternoon. freezing spray. a chance of snow showers. waves
building to 8 to 11 feet occasionally to 14 feet. 
.wednesday night...northwest gales to 40 knots becoming north
20 to 30 knots late. freezing spray in the evening. snow showers
likely in the evening, then a chance of snow showers after
midnight. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...north winds 15 to 25 knots backing northwest in the
afternoon. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.thursday night...northwest winds 10 to 20 knots. a chance of
snow showers. waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. a chance of snow showers in the morning, then
snow showers likely in the afternoon. waves building to 4 to
7 feet occasionally to 9 feet. 
.friday night...northwest gales to 40 knots. freezing spray. snow
showers likely. waves building to 10 to 14 feet occasionally to
18 feet. 
.saturday...northwest gales to 35 knots. freezing spray. snow
showers likely. waves subsiding to 5 to 8 feet occasionally to
10 feet. 
.sunday...northwest winds 20 to 30 knots becoming west 15 to
25 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 092101
glfls 
expires:202512100900;;295824

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 9 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 29.5 inch trough of low pressure will persist over lake superior 
through wednesday morning as a 29.2 inch low currently over north 
dakota crosses southern lake michigan tonight. 29.6 to 29.7 inch 
troughing lingers over lake superior through wednesday as the low 
moves into southern quebec at 29.1 inches by wednesday night. this 
will allow 30.3 inch high pressure to rebuild over the northern 
plains late wednesday through thursday while extending weak ridging 
over lake superior. ridging breaks down slightly early friday, but 
quickly rebuilds as 30.5 inch high pressure over the northern plains 
extends back into the great lakes this weekend.



lsz267-100900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est tue dec 9 2025

.late this afternoon...west winds 10 to 20 knots. a slight chance
of snow showers. waves 1 to 3 feet. 
.tonight...west winds 10 to 20 knots backing east by midnight,
then becoming northeast 20 to 30 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...northeast winds 20 to 30 knots becoming north to
30 knots with a few gale force gusts to 35 knots possible by late
morning, then backing northwest by mid afternoon. freezing spray
in the morning. a chance of snow showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.wednesday night...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible becoming north 20 to 30 knots by
midnight. freezing spray in the evening. a chance of snow
showers. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...north winds 15 to 25 knots backing northwest in the
afternoon. a chance of snow showers. waves subsiding to 2 to
4 feet. 
.thursday night...northwest winds 10 to 20 knots. a chance of
snow showers. waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots backing southwest in the
afternoon. a chance of snow showers in the morning, then snow
showers likely in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...west winds 20 to 30 knots becoming northwest
gales to 35 knots after midnight. snow showers likely. freezing
spray after midnight. waves building to 9 to 12 feet occasionally
to 15 feet. 
.saturday...northwest gales to 35 knots diminishing to 20 to
30 knots. freezing spray. snow showers likely. waves subsiding to
4 to 7 feet occasionally to 9 feet. 
.sunday...northwest winds 15 to 25 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.

$$