fzus63 kdtx 150834
glflh 
expires:202511151645;;440376

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 am est sat nov 15 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 tracking into the hudson bay swings a
cold front across the great lakes this evening as a secondary
area of low pressure, 29.20 inches, forms along the front near
the northern lake huron shoreline. secondary low and cold front
track into southern ontario later this evening setting up strong
northwesterly winds into the central great lakes. gale warnings
are in effect for the bulk of lake huron this evening through
sunday. high pressure, 30.20 inches, then begins to build in
starting sunday night.


lhz361>363-151645-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
334 am est sat nov 15 2025

...gale warning in effect from this afternoon through sunday
evening...

.today...south winds 15 to 20 knots veering to the west with
gusts to around 30 knots late in the afternoon. a chance of rain
in the afternoon. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tonight...northwest winds to 30 knots with gusts to 40 knot
gales. a chance of rain in the evening...then a chance of rain
and snow after midnight. waves 10 to 14 feet. waves occasionally
around 18 feet. 
.sunday...northwest winds to 30 knots increasing to 35 knot gales
in the late morning and afternoon. gusts to 40 knot gales. a
chance of snow. waves 14 to 18 feet. waves occasionally around
23 feet. a gale warning may be needed. 
.sunday night...northwest at 35 knot gales with gusts to 40 knot
gales decreasing to 20 to 25 knots with gusts to around 30 knots.
a chance of snow. waves 12 to 16 feet. waves occasionally around
19 feet. 
.monday...northwest winds 20 to 25 knots decreasing to 10 to
15 knots. waves 6 to 9 feet subsiding to 3 to 5 feet late in the
evening. waves occasionally around 12 feet. 
.tuesday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots veering to the south until
early morning. waves 2 feet or less. 


$$

fzus63 kdtx 150834
glflh 
expires:202511151645;;440377

open lake forecast for lake huron
national weather service detroit/pontiac mi
334 am est sat nov 15 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 tracking into the hudson bay swings a
cold front across the great lakes this evening as a secondary
area of low pressure, 29.20 inches, forms along the front near
the northern lake huron shoreline. secondary low and cold front
track into southern ontario later this evening setting up strong
northwesterly winds into the central great lakes. gale warnings
are in effect for the bulk of lake huron this evening through
sunday. high pressure, 30.20 inches, then begins to build in
starting sunday night.


lhz462-463-151645-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
334 am est sat nov 15 2025

...gale warning in effect from this evening through sunday
evening...

.today...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the afternoon. a chance of rain in the
afternoon. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...northwest winds 20 to 25 knots increasing to 30 knots
in the late evening and overnight. gusts to 35 knot gales. a
chance of rain. waves 6 to 9 feet building to 10 to 14 feet in
the late evening and overnight. waves occasionally around
18 feet. 
.sunday...northwest at 35 knot gales with gusts to 40 knot gales.
a chance of rain and snow in the morning...then snow likely in
the afternoon. waves 14 to 18 feet. waves occasionally around
23 feet. a gale warning may be needed. 
.sunday night...northwest at 35 knot gales with gusts to 40 knot
gales decreasing to 30 knots with gusts to 35 knot gales in the
late evening and overnight. snow likely in the evening...then a
chance of snow after midnight. waves 14 to 18 feet. waves
occasionally around 23 feet. 
.monday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. a chance of snow in the
morning. waves 6 to 9 feet subsiding to 3 to 5 feet late in the
evening. waves occasionally around 12 feet. 
.tuesday...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.wednesday...northeast winds 5 to 10 knots veering to the
southeast in the late evening and early morning. waves 2 feet or
less. 


$$

fzus63 kmkx 150840
glflm 
expires:202511151615;;440682

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 am cst sat nov 15 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...

breezy southwesterly winds early this morning will become more 
northwesterly as a secondary low pressure around 29.3 inches treks
across lake superior and northern lake michigan through the 
morning. this will drag a cold front across the lake into the 
afternoon along with stronger northwesterly winds shift into this 
evening and continuing into sunday. expecting winds gusts around 
30 kt with a few gale force gusts possible in the northern third 
of the open waters as well as along the eastern lakeshore area 
during this timeframe. still do not have high enough confidence 
for gusts exceeding 34 knots for extended period, thus will 
continue to hold off on gale headlines at this time. then winds 
begin to ease as high pressure around 30.1 inches builds into the 
upper midwest sunday night through monday. another low pressure is
expected to track from the central plains to south of lake 
michigan through midweek. 


lmz261-362-364-563-151615-
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 am cst sat nov 15 2025

sturgeon bay wi to point betsie mi north...

.today...southwest winds 15 to 25 kt becoming west late this
morning, then becoming northwest to 30 kt early this afternoon
increasing to gales to 35 kt late. chance of rain this morning,
then slight chance of rain this afternoon. waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.tonight...northwest gales to 35 kt. chance of rain in the
evening, then chance of rain and snow overnight. waves 6 to 9 ft
occasionally to 12 ft. 
.sunday...northwest gales to 35 kt. chance of snow. waves 6 to
9 ft occasionally to 12 ft subsiding to 5 to 8 ft occasionally to
10 ft. 
.sunday night...northwest gales to 35 kt diminishing to 30 kt.
chance of snow in the evening. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.monday...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...northwest winds 10 to 20 kt becoming north 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tuesday...north winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 ft or less. 
.wednesday...southeast winds 10 to 15 kt becoming south. waves
1 ft or less.  

$$

fzus63 kmkx 150840
glflm 
expires:202511151615;;440683

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 am cst sat nov 15 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...

breezy southwesterly winds early this morning will become more 
northwesterly as a secondary low pressure around 29.3 inches treks
across lake superior and northern lake michigan through the 
morning. this will drag a cold front across the lake into the 
afternoon along with stronger northwesterly winds shift into this 
evening and continuing into sunday. expecting winds gusts around 
30 kt with a few gale force gusts possible in the northern third 
of the open waters as well as along the eastern lakeshore area 
during this timeframe. still do not have high enough confidence 
for gusts exceeding 34 knots for extended period, thus will 
continue to hold off on gale headlines at this time. then winds 
begin to ease as high pressure around 30.1 inches builds into the 
upper midwest sunday night through monday. another low pressure is
expected to track from the central plains to south of lake 
michigan through midweek. 


lmz366-565-567-868-151615-
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-
240 am cst sat nov 15 2025

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

.today...southwest winds 15 to 25 kt veering to northwest to
30 kt. slight chance of rain this morning. waves 4 to 6 ft
occasionally to 8 ft. 
.tonight...northwest winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.sunday...northwest winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.sunday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 5 to 8 ft occasionally to 10 ft. 
.monday...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...northwest winds 5 to 10 kt becoming north. waves
1 to 2 ft. 
.tuesday...northeast winds 10 to 15 kt. waves 1 to 3 ft. 
.wednesday...southeast winds 5 to 10 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 150840
glflm 
expires:202511151615;;440684

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 am cst sat nov 15 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...

breezy southwesterly winds early this morning will become more 
northwesterly as a secondary low pressure around 29.3 inches treks
across lake superior and northern lake michigan through the 
morning. this will drag a cold front across the lake into the 
afternoon along with stronger northwesterly winds shift into this 
evening and continuing into sunday. expecting winds gusts around 
30 kt with a few gale force gusts possible in the northern third 
of the open waters as well as along the eastern lakeshore area 
during this timeframe. still do not have high enough confidence 
for gusts exceeding 34 knots for extended period, thus will 
continue to hold off on gale headlines at this time. then winds 
begin to ease as high pressure around 30.1 inches builds into the 
upper midwest sunday night through monday. another low pressure is
expected to track from the central plains to south of lake 
michigan through midweek. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-151615-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
240 am cst sat nov 15 2025

sheboygan wi to pentwater mi south...

.today...southwest winds to 30 kt veering to northwest 15 to
25 kt. slight chance of rain. waves 4 to 7 ft occasionally to
9 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.tonight...northwest winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft building to 10 to 14 ft occasionally to 18 ft. 
.sunday...northwest winds to 30 kt. waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 12 ft occasionally to
16 ft. 
.sunday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 8 to 11 ft occasionally to 14 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.monday...northwest winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.monday night...northeast winds 5 to 10 kt veering to east 10 to
20 kt. chance of rain. waves 1 to 3 ft. 
.tuesday...east winds 10 to 20 kt. chance of rain. waves 3 to
5 ft. 
.wednesday...east winds 10 to 15 kt becoming southeast. waves
1 to 3 ft.  

$$

fzus63 kmqt 150901
glfls 
expires:202511152100;;441379

open lake forecast for lake superior
national weather service marquette mi
401 am est sat nov 15 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 29.4 inch trough extends over lake superior this morning from a 
29.2 inch low moving towards hudson bay. the trough exits into 
eastern ontario this evening and develops into a 29.1 inch low over 
new england by sunday morning, further deepening to 28.8 inches over 
the canadian maritimes sunday night into monday. troughing gradually 
weakens to 29.9 inches over lake superior through sunday night as 
this occurs. meanwhile, 30.1 inch high pressure extending from 
saskatchewan to the dakotas this weekend builds to 30.3 inches as it 
shifts east to the great lakes by tuesday night. high pressure 
persists at around 30.2 inches over the lake through late next week 
as the high shifts east to new england by thursday night.



lsz162-152100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am est sat nov 15 2025 /301 am cst sat nov 15 2025/

.early this morning...west winds 10 to 20 knots. a slight chance
of showers. waves calm to 2 feet. 
.today...west winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then veering northwest by mid afternoon. a
slight chance of rain showers in the morning. waves building to
3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...northwest winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.sunday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...north winds 5 to 15 knots veering northeast after
midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 150901
glfls 
expires:202511152100;;441380

open lake forecast for lake superior
national weather service marquette mi
401 am est sat nov 15 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 29.4 inch trough extends over lake superior this morning from a 
29.2 inch low moving towards hudson bay. the trough exits into 
eastern ontario this evening and develops into a 29.1 inch low over 
new england by sunday morning, further deepening to 28.8 inches over 
the canadian maritimes sunday night into monday. troughing gradually 
weakens to 29.9 inches over lake superior through sunday night as 
this occurs. meanwhile, 30.1 inch high pressure extending from 
saskatchewan to the dakotas this weekend builds to 30.3 inches as it 
shifts east to the great lakes by tuesday night. high pressure 
persists at around 30.2 inches over the lake through late next week 
as the high shifts east to new england by thursday night.



lsz263-152100-
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 sat nov 15 2025

.early this morning...west winds 5 to 15 knots. a chance of
showers. waves 1 to 3 feet. 
.today...northwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of rain showers in the
morning. waves building to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds 20 to 30 knots. waves subsiding to
4 to 7 feet occasionally to 9 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.monday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 150901
glfls 
expires:202511152100;;441381

open lake forecast for lake superior
national weather service marquette mi
401 am est sat nov 15 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 29.4 inch trough extends over lake superior this morning from a 
29.2 inch low moving towards hudson bay. the trough exits into 
eastern ontario this evening and develops into a 29.1 inch low over 
new england by sunday morning, further deepening to 28.8 inches over 
the canadian maritimes sunday night into monday. troughing gradually 
weakens to 29.9 inches over lake superior through sunday night as 
this occurs. meanwhile, 30.1 inch high pressure extending from 
saskatchewan to the dakotas this weekend builds to 30.3 inches as it 
shifts east to the great lakes by tuesday night. high pressure 
persists at around 30.2 inches over the lake through late next week 
as the high shifts east to new england by thursday night.



lsz264-152100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am est sat nov 15 2025

.early this morning...west winds 5 to 15 knots. a slight chance
of showers. waves 3 to 6 feet occasionally to 8 feet. 
.today...northwest winds 15 to 25 knots increasing to 20 to
30 knots. a chance of rain showers in the morning. waves building
to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. waves building to 6 to 10 feet occasionally to 13 feet.
.sunday...northwest winds 20 to 30 knots. waves subsiding to 5 to
8 feet occasionally to 10 feet. 
.sunday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northwest winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.monday night...north winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.tuesday...north winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 150901
glfls 
expires:202511152100;;441382

open lake forecast for lake superior
national weather service marquette mi
401 am est sat nov 15 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 29.4 inch trough extends over lake superior this morning from a 
29.2 inch low moving towards hudson bay. the trough exits into 
eastern ontario this evening and develops into a 29.1 inch low over 
new england by sunday morning, further deepening to 28.8 inches over 
the canadian maritimes sunday night into monday. troughing gradually 
weakens to 29.9 inches over lake superior through sunday night as 
this occurs. meanwhile, 30.1 inch high pressure extending from 
saskatchewan to the dakotas this weekend builds to 30.3 inches as it 
shifts east to the great lakes by tuesday night. high pressure 
persists at around 30.2 inches over the lake through late next week 
as the high shifts east to new england by thursday night.



lsz265-152100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am est sat nov 15 2025

...gale warning in effect from 4 pm est this afternoon through
sunday morning...

.early this morning...southwest winds 10 to 20 knots. a slight
chance of showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.today...west winds 15 to 25 knots becoming northwest gales to
40 knots. a chance of rain showers in the morning. waves building
to 5 to 8 feet occasionally to 10 feet. 
.tonight...northwest gales to 40 knots. a slight chance of snow
showers after midnight. waves building to 6 to 10 feet
occasionally to 13 feet. 
.sunday...northwest gales to 40 knots. a slight chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.sunday 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. 
.monday...northwest winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 
.monday night...northwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.tuesday...north winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 150901
glfls 
expires:202511152100;;441383

open lake forecast for lake superior
national weather service marquette mi
401 am est sat nov 15 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 29.4 inch trough extends over lake superior this morning from a 
29.2 inch low moving towards hudson bay. the trough exits into 
eastern ontario this evening and develops into a 29.1 inch low over 
new england by sunday morning, further deepening to 28.8 inches over 
the canadian maritimes sunday night into monday. troughing gradually 
weakens to 29.9 inches over lake superior through sunday night as 
this occurs. meanwhile, 30.1 inch high pressure extending from 
saskatchewan to the dakotas this weekend builds to 30.3 inches as it 
shifts east to the great lakes by tuesday night. high pressure 
persists at around 30.2 inches over the lake through late next week 
as the high shifts east to new england by thursday night.



lsz266-152100-
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 sat nov 15 2025

...gale warning in effect from 2 pm est this afternoon through
sunday evening...

.early this morning...south winds 15 to 25 knots. a slight chance
of showers. waves 4 to 7 feet occasionally to 9 feet subsiding to
3 to 6 feet occasionally to 8 feet. 
.today...west winds 15 to 25 knots becoming northwest gales to
40 knots. a chance of rain showers. waves subsiding to 3 to
5 feet occasionally to 7 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.tonight...northwest gales to 40 knots. a slight chance of rain
showers in the evening. a chance of snow showers. waves building
to 10 to 14 feet occasionally to 18 feet. 
.sunday...northwest gales to 40 knots. a chance of snow showers.
waves 10 to 14 feet occasionally to 18 feet. 
.sunday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.monday...northwest winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...north winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. a
chance of rain showers. waves calm to 2 feet. 

$$

fzus63 kmqt 150901
glfls 
expires:202511152100;;441384

open lake forecast for lake superior
national weather service marquette mi
401 am est sat nov 15 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 29.4 inch trough extends over lake superior this morning from a 
29.2 inch low moving towards hudson bay. the trough exits into 
eastern ontario this evening and develops into a 29.1 inch low over 
new england by sunday morning, further deepening to 28.8 inches over 
the canadian maritimes sunday night into monday. troughing gradually 
weakens to 29.9 inches over lake superior through sunday night as 
this occurs. meanwhile, 30.1 inch high pressure extending from 
saskatchewan to the dakotas this weekend builds to 30.3 inches as it 
shifts east to the great lakes by tuesday night. high pressure 
persists at around 30.2 inches over the lake through late next week 
as the high shifts east to new england by thursday night.



lsz267-152100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am est sat nov 15 2025

...gale warning in effect from 2 pm est this afternoon through
sunday evening...

.early this morning...south winds 20 to 30 knots. a slight chance
of showers. waves 4 to 8 feet occasionally to 10 feet. 
.today...south winds 15 to 25 knots becoming northwest gales to
40 knots. a chance of rain showers. waves subsiding to 2 to
4 feet, then building to 9 to 12 feet occasionally to 15 feet. 
.tonight...northwest gales to 40 knots. a chance of rain showers,
possibly mixed with snow in the evening, then snow showers likely
after midnight. waves building to 10 to 14 feet occasionally to
18 feet. 
.sunday...northwest gales to 40 knots. snow showers. waves 10 to
14 feet occasionally to 18 feet. 
.sunday night...northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. snow showers likely in the evening, then
a chance of snow showers after midnight. waves subsiding to 5 to
8 feet occasionally to 10 feet. 
.monday...northwest winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...northwest winds 10 to 20 knots veering north
after midnight. a chance of snow showers in the evening. waves
subsiding to calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.wednesday...south winds 10 to 20 knots. a chance of rain
showers. waves calm to 2 feet. 

$$