fzus63 kdtx 090900
glflh 
expires:202512091700;;266493

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am 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...the next low pressure system will track through lake
superior today, 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.


lhz361-362-091700-
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-
400 am est tue dec 9 2025

.today...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. patchy
freezing drizzle in the afternoon. snow may be heavy at times in
the morning. waves 8 to 12 feet. waves occasionally around
15 feet. 
.tonight...west winds 10 to 15 knots becoming south 5 to 10 knots
after midnight...then increasing to 10 to 15 knots early in the
morning. a chance of snow after midnight. waves 4 to 6 feet
subsiding to 2 to 4 feet early in the morning. waves occasionally
around 8 feet. 
.wednesday...northeast winds 15 to 20 knots becoming north 20 to
25 knots with gusts to around 30 knots in the late morning and
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 early in the evening. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday...northwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the evening. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.friday...west winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of snow in the late morning and early
afternoon. snow likely until early morning. waves 3 to 5 feet
building to 5 to 7 feet in the late evening and early morning.
waves occasionally around 10 feet. 
.saturday...west winds 20 to 25 knots decreasing to 15 to
20 knots in the late evening and early morning. a chance of snow.
waves 6 to 9 feet. waves occasionally around 12 feet. 


$$

fzus63 kdtx 090900
glflh 
expires:202512091700;;266494

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 am 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...the next low pressure system will track through lake
superior today, 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>464-091700-
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-
400 am est tue dec 9 2025

.today...south winds 20 to 25 knots increasing to 30 knots late
in the morning...then becoming southwest 20 to 25 knots 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 6 to
9 feet. waves occasionally around 12 feet. 
.tonight...southwest winds 15 to 20 knots becoming south 10 to
15 knots after midnight. 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 with gusts to
35 knot gales 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 becoming west
20 to 25 knots after midnight. gusts to 35 knot gales. a chance
of snow. waves 10 to 14 feet. waves occasionally around 18 feet. 
.thursday...west winds 20 to 25 knots decreasing to 15 to
20 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 
.friday...west winds 10 to 15 knots becoming southwest 20 to
25 knots. a chance of snow in the late morning and early
afternoon. snow likely until early morning. 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 to 30 knots decreasing to 20 to 25 knots
with gusts to around 30 knots. a chance of snow. waves 8 to
12 feet. waves occasionally around 15 feet. 


$$

fzus63 kmkx 090900
glflm 
expires:202512091615;;266435

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am 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 29.7 inches over lake superior this morning
has brought southwest gales to the northern half of the lake this
morning with gale warning in effect until 12z this morning. the 
winds will gradually weaken over the next few hours to below gale 
force.

a much stronger low around 29.2 inches will then track from
minnesota across southern lake mi and into lower mi tonight. 
southwest to westerly gales will develop ahead of the low over 
the southern third of the lake tonight, followed by the potential
for northwest to northerly gales on wednesday after the low 
passes. the northwest gales will bring more widespread gales
across the southern two thirds of the lake. a gale warning is now
in effect for the south third starting mid evening tonight and
starting for the central third early wednesday morning (11z). 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.


lmz261-362-364-563-091615-
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-
300 am cst tue dec 9 2025

sturgeon bay wi to point betsie mi north...

...gale warning in effect until 6 am cst early this morning...

.today...southwest winds to 30 kt becoming west 15 to 25 kt late
this morning, then diminishing to 10 to 20 kt early this
afternoon becoming west 10 to 20 kt late. snow this morning.
waves 8 to 12 ft occasionally to 16 ft subsiding to 3 to 5 ft. 
.tonight...southwest winds 10 to 15 kt becoming south 10 to 20 kt
late in the evening, then becoming east after midnight becoming
northeast to 30 kt late. chance of snow in the evening, then snow
and slight chance of rain overnight. waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft. 
.wednesday...northeast winds to 30 kt becoming northwest. chance
of snow in the morning. waves 7 to 10 ft occasionally to 13 ft
subsiding to 4 to 7 ft occasionally to 9 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft. 
.thursday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday night...northwest winds 10 to 15 kt becoming west.
waves 1 to 3 ft. 
.friday...west winds 10 to 20 kt increasing to 30 kt. chance of
snow. waves 2 to 4 ft building to 3 to 5 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.  

$$

fzus63 kmkx 090900
glflm 
expires:202512091615;;266438

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am 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 29.7 inches over lake superior this morning
has brought southwest gales to the northern half of the lake this
morning with gale warning in effect until 12z this morning. the 
winds will gradually weaken over the next few hours to below gale 
force.

a much stronger low around 29.2 inches will then track from
minnesota across southern lake mi and into lower mi tonight. 
southwest to westerly gales will develop ahead of the low over 
the southern third of the lake tonight, followed by the potential
for northwest to northerly gales on wednesday after the low 
passes. the northwest gales will bring more widespread gales
across the southern two thirds of the lake. a gale warning is now
in effect for the south third starting mid evening tonight and
starting for the central third early wednesday morning (11z). 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.


lmz366-565-567-868-091615-
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 pentwater to manistee mi 5 nm offshore to mid
lake-
300 am cst tue dec 9 2025

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect until 6 am cst early this morning...
...gale warning in effect from late tonight through wednesday
afternoon...

.today...southwest winds to 30 kt diminishing to 10 to 20 kt.
snow likely this morning. waves 8 to 11 ft occasionally to 14 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.tonight...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 north late. snow and rain. 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. waves 7 to 10 ft occasionally to 13 ft
building to 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.
waves 2 to 4 ft. 
.friday...west winds 10 to 20 kt increasing to 30 kt. snow
likely. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.saturday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. chance of snow. waves 8 to 11 ft occasionally to
14 ft subsiding to 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 090900
glflm 
expires:202512091615;;266436

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am 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 29.7 inches over lake superior this morning
has brought southwest gales to the northern half of the lake this
morning with gale warning in effect until 12z this morning. the 
winds will gradually weaken over the next few hours to below gale 
force.

a much stronger low around 29.2 inches will then track from
minnesota across southern lake mi and into lower mi tonight. 
southwest to westerly gales will develop ahead of the low over 
the southern third of the lake tonight, followed by the potential
for northwest to northerly gales on wednesday after the low 
passes. the northwest gales will bring more widespread gales
across the southern two thirds of the lake. a gale warning is now
in effect for the south third starting mid evening tonight and
starting for the central third early wednesday morning (11z). 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.


lmz669-671-870-872-091615-
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 whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
300 am cst tue dec 9 2025

sheboygan wi to pentwater mi south to north point light wi to
grand haven mi...

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

.today...southwest winds to 30 kt diminishing to 10 to 20 kt.
chance of snow this morning. waves 8 to 11 ft occasionally to
14 ft subsiding to 6 to 9 ft occasionally to 12 ft. 
.tonight...southwest winds 15 to 25 kt becoming south to 30 kt
late in the evening, then becoming southwest gales to 35 kt after
midnight becoming west late. rain and snow. waves 4 to 6 ft
occasionally to 8 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 10 to 14 ft occasionally to 18 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. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.thursday night...northwest winds 10 to 15 kt becoming west.
chance of snow. waves 3 to 5 ft. 
.friday...west winds 15 to 25 kt increasing to 30 kt. chance of
snow. waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 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.  

$$

fzus63 kmqt 090900
glfls 
expires:202512092100;;266486

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

29.8 inc h low pressure beginning to move over lake superior deepens 
to 29.6 inches this morning while sweeping eastward. a stronger 29.3 
inch low moving out of the canadian rockies will cross lake michigan 
at 29.2 inches tonight, 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 30.3 inch high pressure to 
rebuild over the northern plains late wednesday through thursday 
while extending weak ridging over lake superior. this may break down 
slightly early friday, but then 30.5 inch ridge over the northern 
plains extends into the great lakes this weekend.



lsz162-092100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est tue dec 9 2025 /300 am cst tue dec 9 2025/

.early this morning...northwest winds 10 to 20 knots. a slight
chance of snow showers. waves 2 to 4 feet. 
.today...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. waves subsiding to calm to 2 feet. 
.tonight...east winds 10 to 20 knots becoming northeast 20 to
30 knots by 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 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...northwest winds 10 to 20 knots backing west
after midnight. a chance of snow showers after midnight. waves
calm to 2 feet. 
.friday...northwest winds 20 to 30 knots. snow showers likely.
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 090900
glfls 
expires:202512092100;;266487

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

29.8 inc h low pressure beginning to move over lake superior deepens 
to 29.6 inches this morning while sweeping eastward. a stronger 29.3 
inch low moving out of the canadian rockies will cross lake michigan 
at 29.2 inches tonight, 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 30.3 inch high pressure to 
rebuild over the northern plains late wednesday through thursday 
while extending weak ridging over lake superior. this may break down 
slightly early friday, but then 30.5 inch ridge over the northern 
plains extends into the great lakes this weekend.



lsz263-092100-
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 am est tue dec 9 2025

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

.early this morning...west winds 10 to 20 knots. snow showers.
waves 3 to 5 feet occasionally to 7 feet. 
.today...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. a slight chance of snow showers in the morning. waves
subsiding to 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 showers. 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 becoming north
10 to 20 knots after midnight. 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 gales to 35 knots veering northwest. freezing
spray. snow showers likely. 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 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 090900
glfls 
expires:202512092100;;266488

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

29.8 inc h low pressure beginning to move over lake superior deepens 
to 29.6 inches this morning while sweeping eastward. a stronger 29.3 
inch low moving out of the canadian rockies will cross lake michigan 
at 29.2 inches tonight, 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 30.3 inch high pressure to 
rebuild over the northern plains late wednesday through thursday 
while extending weak ridging over lake superior. this may break down 
slightly early friday, but then 30.5 inch ridge over the northern 
plains extends into the great lakes this weekend.



lsz264-092100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est tue dec 9 2025

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

.early this morning...southwest winds 10 to 20 knots. snow
showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...north winds 10 to 20 knots becoming northwest 5 to
15 knots. a chance of snow showers in the morning. waves
subsiding to calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots increasing to gales to
35 knots. a slight 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 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 after midnight. 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. waves subsiding
to calm to 2 feet. 
.friday...west winds 20 to 30 knots becoming northwest gales to
35 knots. 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. 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 090900
glfls 
expires:202512092100;;266489

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

29.8 inc h low pressure beginning to move over lake superior deepens 
to 29.6 inches this morning while sweeping eastward. a stronger 29.3 
inch low moving out of the canadian rockies will cross lake michigan 
at 29.2 inches tonight, 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 30.3 inch high pressure to 
rebuild over the northern plains late wednesday through thursday 
while extending weak ridging over lake superior. this may break down 
slightly early friday, but then 30.5 inch ridge over the northern 
plains extends into the great lakes this weekend.



lsz265-092100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est tue dec 9 2025

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

.early this morning...southwest winds 15 to 25 knots. snow
showers. waves 2 to 4 feet. 
.today...west winds 15 to 25 knots becoming northwest 10 to
20 knots by mid afternoon. a chance of snow showers in the
morning. waves subsiding to 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 showers. 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 after midnight. a slight chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 15 to 25 knots. 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 20 to 30 knots becoming northwest gales to
40 knots. a chance of snow showers, then snow showers. freezing
spray. waves building to 7 to 10 feet occasionally to 13 feet. 
.saturday...northwest gales to 35 knots diminishing to 20 to
30 knots. freezing spray. snow showers likely, then a chance of
snow showers. waves subsiding to 3 to 5 feet occasionally to
7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 090900
glfls 
expires:202512092100;;266490

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

29.8 inc h low pressure beginning to move over lake superior deepens 
to 29.6 inches this morning while sweeping eastward. a stronger 29.3 
inch low moving out of the canadian rockies will cross lake michigan 
at 29.2 inches tonight, 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 30.3 inch high pressure to 
rebuild over the northern plains late wednesday through thursday 
while extending weak ridging over lake superior. this may break down 
slightly early friday, but then 30.5 inch ridge over the northern 
plains extends into the great lakes this weekend.



lsz266-092100-
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 am est tue dec 9 2025

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

.early this morning...southwest winds 15 to 25 knots. snow
showers. waves 4 to 8 feet occasionally to 10 feet. 
.today...west winds 15 to 25 knots becoming northwest 10 to
20 knots by mid afternoon. a chance of snow showers. waves
subsiding to 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 35 knots becoming north
20 to 30 knots after midnight. 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 20 to 30 knots becoming northwest gales to
35 knots. a chance of snow showers, then snow showers. freezing
spray. waves building to 10 to 14 feet occasionally to 18 feet. 
.saturday...northwest gales to 35 knots. freezing spray. snow
showers. a chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 090900
glfls 
expires:202512092100;;266491

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

29.8 inc h low pressure beginning to move over lake superior deepens 
to 29.6 inches this morning while sweeping eastward. a stronger 29.3 
inch low moving out of the canadian rockies will cross lake michigan 
at 29.2 inches tonight, 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 30.3 inch high pressure to 
rebuild over the northern plains late wednesday through thursday 
while extending weak ridging over lake superior. this may break down 
slightly early friday, but then 30.5 inch ridge over the northern 
plains extends into the great lakes this weekend.



lsz267-092100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est tue dec 9 2025

.early this morning...southwest winds 20 to 30 knots. snow
showers. waves 4 to 8 feet occasionally to 10 feet. 
.today...southwest winds 15 to 25 knots becoming west 10 to
20 knots. a chance of snow showers. waves subsiding to 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 gales to 35 knots becoming north
20 to 30 knots after midnight. 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 15 to 25 knots becoming northwest 20 to
30 knots. a chance of snow showers, then snow showers. freezing
spray. waves building to 9 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
4 to 7 feet occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$