fzus63 kdtx 200838
glflh 
expires:202511201645;;183976

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 am est thu nov 20 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak cold front, 29.90 inches, tracks across the
region late tonight, supporting moderate preceding southwest 
winds and renewed colder northwest winds following. high pressure,
30.10 inches, then slides across the central great lakes to close
out the week.


lhz361-201645-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
338 am est thu nov 20 2025

.today...south winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. a chance of rain in the afternoon. waves 1 to
3 feet. 
.tonight...southwest winds 10 to 15 knots veering to the west
early in the morning. rain likely. waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 3 to 5 feet. 
.friday night...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight. 
.saturday...northwest winds 5 to 10 knots backing to the
southwest late in the afternoon...then increasing to 10 to
15 knots late in the evening. a chance of rain late in the
afternoon. waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots veering to the west
until early morning. waves 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming south 5 to 10 knots
until early morning. a chance of. waves 1 to 3 feet. 


$$

fzus63 kdtx 200838
glflh 
expires:202511201645;;183977

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 am est thu nov 20 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak cold front, 29.90 inches, tracks across the
region late tonight, supporting moderate preceding southwest 
winds and renewed colder northwest winds following. high pressure,
30.10 inches, then slides across the central great lakes to close
out the week.


lhz362-363-201645-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
338 am est thu nov 20 2025

.today...southwest winds 5 to 10 knots increasing to 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet
building to 2 to 4 feet in the afternoon. 
.tonight...southwest winds 15 to 20 knots. a chance of rain in
the evening. waves 3 to 5 feet. 
.friday...west winds 15 to 20 knots. waves 3 to 5 feet. 
.friday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday...northwest winds 5 to 10 knots backing to the
southwest late in the afternoon...then increasing to 10 to
15 knots late in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet late in the morning...then building to 2 to 4 feet late in
the evening. 
.sunday...southwest winds 15 to 20 knots veering to the west
early in the evening...then decreasing to 10 to 15 knots in the
late evening and early morning. waves 3 to 5 feet. 
.monday...west winds 10 to 15 knots backing to the south until
early morning. a chance of. waves 2 to 4 feet. 


$$

fzus63 kdtx 200838
glflh 
expires:202511201645;;183978

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 am est thu nov 20 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak cold front, 29.90 inches, tracks across the
region late tonight, supporting moderate preceding southwest 
winds and renewed colder northwest winds following. high pressure,
30.10 inches, then slides across the central great lakes to close
out the week.


lhz462>464-201645-
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-
338 am est thu nov 20 2025

.today...south winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. waves 2 feet or less. 
.tonight...southwest winds 10 to 15 knots. a chance of rain.
waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots. a chance of rain in the
morning. waves 2 to 4 feet. 
.friday night...northwest winds 10 to 15 knots. waves 3 to
5 feet. 
.saturday...north winds 10 to 15 knots becoming northwest 5 to
10 knots late in the morning...then backing to the southwest late
in the afternoon increasing to 10 to 15 knots late in the
evening. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots until early morning. waves 2 to 4 feet. 
.monday...west winds 10 to 15 knots backing to the south until
early morning. a chance of. waves 1 to 3 feet. 


$$

fzus63 kmkx 200848
glflm 
expires:202511201630;;184237

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 am cst thu nov 20 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...

high pressure of 30.3 inches will remain over the eastern great
lakes through today, while low pressure of 29.5 inches progresses
eastward through northern ontario and deepens to 29.4 inches
in the hudson bay overnight tonight. expect light southwesterly
winds to develop this morning, becoming breezy this afternoon and
evening. winds shift to become northwesterly and diminish
overnight as a cold front from this low progresses eastward across
the open waters. light northwest winds continue through friday, 
becoming light and variable saturday as weak high pressure around
30.0 inches passes over the lake. winds will become southwesterly
again saturday night into sunday, and westerly by sunday night as
an additional low pressure system deepens across the hudson bay
and brings another weak cold front through the lake.


lmz261-362-364-366-563-565-567-868-201630-
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-
248 am cst thu nov 20 2025

sheboygan wi to pentwater mi north...

.today...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
slight chance of drizzle. waves 3 to 5 ft. 
.tonight...southwest winds 15 to 25 kt becoming west 10 to 20 kt.
slight chance of drizzle in the evening. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.friday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 ft or less building to 1 to 3 ft. 
.saturday night...southwest winds 15 to 25 kt becoming west.
waves 3 to 5 ft. 
.sunday...west winds 15 to 25 kt. waves 3 to 5 ft. 
.monday...southwest winds 10 to 20 kt becoming south. waves 1 to
3 ft.  

$$

fzus63 kmkx 200848
glflm 
expires:202511201630;;184238

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 am cst thu nov 20 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...

high pressure of 30.3 inches will remain over the eastern great
lakes through today, while low pressure of 29.5 inches progresses
eastward through northern ontario and deepens to 29.4 inches
in the hudson bay overnight tonight. expect light southwesterly
winds to develop this morning, becoming breezy this afternoon and
evening. winds shift to become northwesterly and diminish
overnight as a cold front from this low progresses eastward across
the open waters. light northwest winds continue through friday, 
becoming light and variable saturday as weak high pressure around
30.0 inches passes over the lake. winds will become southwesterly
again saturday night into sunday, and westerly by sunday night as
an additional low pressure system deepens across the hudson bay
and brings another weak cold front through the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-201630-
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-
248 am cst thu nov 20 2025

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 15 kt increasing to 10 to 20 kt.
slight chance of drizzle. waves 2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt becoming northwest 10 to
15 kt. slight chance of drizzle. waves 2 to 4 ft. 
.friday...northwest winds 10 to 15 kt becoming north 10 to 20 kt.
waves 2 to 4 ft. 
.friday night...north winds 10 to 15 kt becoming northeast. waves
2 to 4 ft. 
.saturday...east winds 5 to 10 kt veering to south 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 20 kt. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.sunday...west winds 10 to 20 kt. waves 4 to 6 ft occasionally to
8 ft. 
.monday...south winds 10 to 15 kt becoming southeast. waves 1 to
3 ft.  

$$

fzus63 kmqt 200901
glfls 
expires:202511202100;;184775

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 20 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 29.8 inch trough moves over lake superior today as a developing 
29.7 inch low over northern manitoba moves into hudson bay at 29.5 
inches tonight. a 30.1 inch ridge of high pressure over the northern 
plains and upper midwest on friday moves over the great lakes on 
saturday. another 29.8 inch trough then moves over lake superior 
saturday night into sunday before 30.1 inch high pressure rebuilds 
over the great lakes early next week.



lsz162-202100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am est thu nov 20 2025 /301 am cst thu nov 20 2025/

.early this morning...southwest winds 15 to 25 knots. a chance of
rain showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...southwest winds 15 to 25 knots veering west. a chance of
rain showers in the morning. waves subsiding to 2 to 4 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves subsiding to 1 to 3 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.saturday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$

fzus63 kmqt 200901
glfls 
expires:202511202100;;184776

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 20 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 29.8 inch trough moves over lake superior today as a developing 
29.7 inch low over northern manitoba moves into hudson bay at 29.5 
inches tonight. a 30.1 inch ridge of high pressure over the northern 
plains and upper midwest on friday moves over the great lakes on 
saturday. another 29.8 inch trough then moves over lake superior 
saturday night into sunday before 30.1 inch high pressure rebuilds 
over the great lakes early next week.



lsz263-202100-
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-
401 am est thu nov 20 2025

.early this morning...southwest winds 15 to 25 knots. a chance of
rain showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...southwest winds 15 to 25 knots veering west. a chance of
rain showers. waves building to 3 to 6 feet occasionally to
8 feet. 
.tonight...west winds 10 to 20 knots increasing to 15 to 25 knots
by midnight. waves subsiding to 3 to 5 feet occasionally to
7 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots veering southwest in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots. waves building to
2 to 4 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$

fzus63 kmqt 200901
glfls 
expires:202511202100;;184777

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 20 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 29.8 inch trough moves over lake superior today as a developing 
29.7 inch low over northern manitoba moves into hudson bay at 29.5 
inches tonight. a 30.1 inch ridge of high pressure over the northern 
plains and upper midwest on friday moves over the great lakes on 
saturday. another 29.8 inch trough then moves over lake superior 
saturday night into sunday before 30.1 inch high pressure rebuilds 
over the great lakes early next week.



lsz264-202100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am est thu nov 20 2025

.early this morning...southwest winds 15 to 25 knots. rain
showers likely. waves 3 to 6 feet occasionally to 8 feet. 
.today...southwest winds 15 to 25 knots veering west by mid
afternoon. rain showers likely in the morning, then a chance of
rain showers in the afternoon. waves 3 to 6 feet occasionally to
8 feet. 
.tonight...northwest winds 15 to 25 knots becoming west 10 to
20 knots by midnight, then increasing to 15 to 25 knots late.
waves subsiding to 3 to 5 feet occasionally to 7 feet, then
building to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 
.friday night...northwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots. waves building to
2 to 4 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.monday...west winds 5 to 15 knots backing south. waves subsiding
to calm to 2 feet. 

$$

fzus63 kmqt 200901
glfls 
expires:202511202100;;184778

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 20 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 29.8 inch trough moves over lake superior today as a developing 
29.7 inch low over northern manitoba moves into hudson bay at 29.5 
inches tonight. a 30.1 inch ridge of high pressure over the northern 
plains and upper midwest on friday moves over the great lakes on 
saturday. another 29.8 inch trough then moves over lake superior 
saturday night into sunday before 30.1 inch high pressure rebuilds 
over the great lakes early next week.



lsz265-202100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am est thu nov 20 2025

.early this morning...southwest winds 15 to 25 knots. a chance of
rain showers. waves 1 to 3 feet. 
.today...southwest winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then veering west by mid afternoon. a
chance of rain showers. waves building to 2 to 4 feet. 
.tonight...west winds 20 to 30 knots. a slight chance of rain
showers in the evening. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots. waves subsiding to 2 to
4 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. waves building to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 
.monday...southwest winds 10 to 20 knots backing south. waves
calm to 2 feet. 

$$

fzus63 kmqt 200901
glfls 
expires:202511202100;;184779

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 20 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 29.8 inch trough moves over lake superior today as a developing 
29.7 inch low over northern manitoba moves into hudson bay at 29.5 
inches tonight. a 30.1 inch ridge of high pressure over the northern 
plains and upper midwest on friday moves over the great lakes on 
saturday. another 29.8 inch trough then moves over lake superior 
saturday night into sunday before 30.1 inch high pressure rebuilds 
over the great lakes early next week.



lsz266-202100-
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-
401 am est thu nov 20 2025

.early this morning...southwest winds 15 to 25 knots. a chance of
rain showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...southwest winds 15 to 25 knots. a chance of rain
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots increasing to 20 to 30 knots
by midnight, then diminishing to 15 to 25 knots late. a chance of
rain showers. waves building to 4 to 7 feet occasionally to
9 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a chance of rain and snow showers.
waves building to 5 to 9 feet occasionally to 11 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of rain and snow
showers in the evening. waves subsiding to 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 15 to
25 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of rain showers. waves building to 2 to
4 feet. 
.sunday...west winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.monday...west winds 10 to 20 knots backing south. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 200901
glfls 
expires:202511202100;;184780

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 20 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 29.8 inch trough moves over lake superior today as a developing 
29.7 inch low over northern manitoba moves into hudson bay at 29.5 
inches tonight. a 30.1 inch ridge of high pressure over the northern 
plains and upper midwest on friday moves over the great lakes on 
saturday. another 29.8 inch trough then moves over lake superior 
saturday night into sunday before 30.1 inch high pressure rebuilds 
over the great lakes early next week.



lsz267-202100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am est thu nov 20 2025

.early this morning...southwest winds 15 to 25 knots. a slight
chance of rain showers. waves 3 to 5 feet occasionally to 7 feet.
.today...southwest winds 15 to 25 knots backing south by late
morning, then veering southwest by mid afternoon. a chance of
rain showers in the morning, then rain showers likely in the
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots increasing to 20 to 30 knots
late. a chance of rain showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...west winds 20 to 30 knots veering northwest. a chance
of rain showers. a chance of snow showers in the afternoon. waves
building to 5 to 9 feet occasionally to 11 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a slight chance of snow showers in
the evening. waves subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots backing south in the
afternoon. a chance of rain showers, possibly mixed with snow in
the afternoon. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of rain showers. waves building to 2 to
4 feet. 
.sunday...west winds 15 to 25 knots veering northwest. a chance
of rain showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.monday...west winds 10 to 20 knots backing south. a chance of
rain showers. waves subsiding to calm to 2 feet. 

$$