fzus63 kdtx 131937
glflh 
expires:202510140345;;078901

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 pm edt mon oct 13 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 cold front tracks through the central great lakes
tonight, allowing winds to shift to the northwest. expansive high
pressure, 30.30 inches, will then build into the great lakes
region tomorrow and wednesday.


lhz361-140345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
337 pm edt mon oct 13 2025

.tonight...southeast winds 10 to 15 knots veering to the 
southwest after midnight...then becoming northwest early in the 
morning. waves 1 to 3 feet. 
.tuesday...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet late in the afternoon. 
.tuesday night...northwest winds 15 to 20 knots. waves 3 to
5 feet subsiding to 1 to 3 feet after midnight. 
.wednesday...northeast winds 5 to 10 knots backing to the
northwest early in the afternoon. waves 2 feet or less. 
.wednesday night...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.thursday...light and variable winds becoming south 5 to 10 knots
late in the evening. a chance of showers late in the afternoon.
waves 2 feet or less. 
.friday...south winds 10 to 15 knots. showers likely...then a
chance of showers in the late evening and early morning. waves
1 to 3 feet building to 3 to 5 feet. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots until early morning. a chance of showers early in the
morning...then showers likely. waves 2 to 4 feet subsiding to
1 to 3 feet in the late evening and early morning. 


$$

fzus63 kdtx 131937
glflh 
expires:202510140345;;078902

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 pm edt mon oct 13 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 cold front tracks through the central great lakes
tonight, allowing winds to shift to the northwest. expansive high
pressure, 30.30 inches, will then build into the great lakes
region tomorrow and wednesday.


lhz362-363-140345-
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-
337 pm edt mon oct 13 2025

.tonight...east winds 5 to 10 knots veering to the southwest
early in the morning. waves 1 to 3 feet. 
.tuesday...north winds 10 to 15 knots becoming northwest 15 to
20 knots in the afternoon. waves 2 to 4 feet building to 3 to
5 feet in the late morning and afternoon. 
.tuesday night...northwest winds 15 to 25 knots. waves 4 to 6 
feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 3 to 5 feet
subsiding to 1 to 3 feet early in the afternoon. waves
occasionally around 8 feet. 
.wednesday night...north winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 1 to 3 feet. 
.thursday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming south 5 to 10 knots late in
the evening. a chance of showers late in the evening. waves
2 feet or less. 
.friday...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers. waves 2 to 4 feet building to 4 to
6 feet. waves occasionally around 8 feet. 
.saturday...south winds 15 to 20 knots decreasing to 10 to
15 knots until early morning. a chance of showers until
afternoon...then showers likely until early morning. waves 3 to
5 feet. 


$$

fzus63 kdtx 131937
glflh 
expires:202510140345;;078903

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 pm edt mon oct 13 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 cold front tracks through the central great lakes
tonight, allowing winds to shift to the northwest. expansive high
pressure, 30.30 inches, will then build into the great lakes
region tomorrow and wednesday.


lhz462>464-140345-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
337 pm edt mon oct 13 2025

.tonight...northeast winds 5 to 10 knots veering to the southeast
after midnight. waves 2 feet or less. 
.tuesday...west winds 5 to 10 knots becoming northwest 10 to
15 knots in the late morning and early afternoon...then becoming
north 15 to 20 knots late in the afternoon. waves 1 to 3 feet
building to 3 to 5 feet in the late morning and afternoon. 
.tuesday night...north winds 15 to 20 knots. a chance of showers
after midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 
.wednesday...north winds 10 to 15 knots. waves 3 to 5 feet. 
.wednesday night...north winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.thursday...north winds 5 to 10 knots becoming light and
variable...then becoming southeast 5 to 10 knots late in the
evening. a chance of showers late in the evening. waves 2 feet or
less. 
.friday...south winds 10 to 15 knots increasing to 15 to 20 knots
in the late evening and early morning. a chance of showers. waves
1 to 3 feet building to 3 to 5 feet. 
.saturday...south winds 15 to 20 knots decreasing to 10 to
15 knots until early morning. a chance of showers...then showers
in the late evening and early morning. waves 2 to 4 feet. 


$$

fzus63 kmkx 131957
glflm 
expires:202510140315;;079459

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 pm cdt mon oct 13 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...

29.4 inch low pressure is moving into the hudson bay this 
afternoon, resulting in generally east to southeast winds across 
the open waters of lake michigan. said low will drag a cold front 
across the lake this evening, resulting in a breezy northerly wind
shift. breezy north to northeast winds will continue tuesday 
through tuesday night as 30.4 inch high pressure builds into the 
northern great plains. the high will cross lake michigan on 
wednesday, allowing winds to taper across the waters. winds will 
turn out of the south to southeast on thursday, when 29.5 inch low
pressure is forecast to develop over the northern great plains. 
the low will deepen to near 29.3 inches near lake winnipeg 
thursday night through friday, allowing winds to increase further 
across lake michigan. gusts could approach gale force during this 
time frame, with trends being monitored through the coming 
forecasts. winds will remain breezy as they turn out of the 
southwest on saturday. winds will increase again as they turn out 
of the northwest on sunday behind a cold front. additional gales 
will be possible as this occurs.

periods of showers will accompany the series of low pressure & 
frontal passages through this weekend. peak periods of shower 
potential will be through this evening, tuesday night, and thursday 
through saturday. a few rumbles of thunder could accompany showers, 
though severe weather is not anticipated at this time.


lmz261-362-364-366-563-565-567-868-140315-
lake michigan from seul choix point to rock island passage 5 nm
offshore to mid lake-
lake michigan south of a line from seul choix point to the
mackinac bridge and north of a line from charlevoix mi to south
fox island 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
257 pm cdt mon oct 13 2025

sheboygan wi to pentwater mi north...

.tonight...west winds 5 to 10 kt becoming northwest 10 to 15 kt
late this evening, then becoming north 10 to 20 kt overnight.
chance of showers this evening. waves 2 to 4 ft. 
.tuesday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday night...north winds 10 to 20 kt becoming northeast.
chance of rain showers. waves 3 to 5 ft. 
.wednesday...northeast winds 10 to 15 kt becoming north. waves
2 to 4 ft subsiding to 1 to 2 ft. 
.wednesday night...northeast winds 10 to 15 kt becoming east.
waves 1 to 2 ft. 
.thursday...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.thursday night...south winds 10 to 20 kt increasing to 15 to
25 kt. showers likely. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.friday...south winds to 30 kt. chance of showers. waves 8 to
11 ft occasionally to 14 ft. 
.saturday...southwest winds 10 to 20 kt increasing to 15 to
25 kt. showers likely. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 131957
glflm 
expires:202510140315;;079460

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
257 pm cdt mon oct 13 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...

29.4 inch low pressure is moving into the hudson bay this 
afternoon, resulting in generally east to southeast winds across 
the open waters of lake michigan. said low will drag a cold front 
across the lake this evening, resulting in a breezy northerly wind
shift. breezy north to northeast winds will continue tuesday 
through tuesday night as 30.4 inch high pressure builds into the 
northern great plains. the high will cross lake michigan on 
wednesday, allowing winds to taper across the waters. winds will 
turn out of the south to southeast on thursday, when 29.5 inch low
pressure is forecast to develop over the northern great plains. 
the low will deepen to near 29.3 inches near lake winnipeg 
thursday night through friday, allowing winds to increase further 
across lake michigan. gusts could approach gale force during this 
time frame, with trends being monitored through the coming 
forecasts. winds will remain breezy as they turn out of the 
southwest on saturday. winds will increase again as they turn out 
of the northwest on sunday behind a cold front. additional gales 
will be possible as this occurs.

periods of showers will accompany the series of low pressure & 
frontal passages through this weekend. peak periods of shower 
potential will be through this evening, tuesday night, and thursday 
through saturday. a few rumbles of thunder could accompany showers, 
though severe weather is not anticipated at this time.


lmz080-669-671-673-675-777-779-870-872-874-876-878-140315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
257 pm cdt mon oct 13 2025

sheboygan wi to pentwater mi south...

.tonight...northwest winds 5 to 10 kt becoming north late this
evening, then increasing to 10 to 20 kt after midnight becoming
north 10 to 20 kt late. waves 1 to 3 ft building to 2 to 4 ft. 
.tuesday...northeast winds 10 to 20 kt becoming north. waves 3 to
5 ft. 
.tuesday night...north winds 15 to 25 kt becoming northeast 10 to
20 kt. chance of showers. waves 4 to 7 ft occasionally to 9 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.wednesday night...northeast winds 10 to 15 kt becoming east.
waves 1 to 3 ft. 
.thursday...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.thursday night...southeast winds 10 to 20 kt becoming south
15 to 25 kt. chance of showers. waves 3 to 5 ft building to 5 to
8 ft occasionally to 10 ft. 
.friday...south winds to 30 kt. waves 8 to 11 ft occasionally to
14 ft. 
.saturday...southwest winds 15 to 25 kt. showers likely. waves
5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmqt 132001
glfls 
expires:202510140800;;079674

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon oct 13 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 30.5 inch high builds over the canadian prairie into tuesday, 
increasing ridging over lake superior. this high shifts east to the 
great lakes and northern ontario by wednesday at around 30.3 inches. 
ridging weakens to 30.0 inches over lake superior through thursday 
as troughing develops over the plains and the parent high moves 
east. thursday night through friday, a 29.4 inch low develops over 
the northern plains and lifts near to lake winnipeg. this low is 
projected to bring 29.5 to 29.6 inch troughing over lake superior 
this weekend as the low traverses northern ontario.



lsz162-140800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt mon oct 13 2025 /301 pm cdt mon oct 13 2025/

.late this afternoon...west winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...west winds 10 to 20 knots veering north late. waves
subsiding to calm to 2 feet. 
.tuesday...north winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots backing east after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet. 
.wednesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots. showers. waves calm
to 2 feet. 
.thursday night...south winds 10 to 20 knots. showers likely.
waves calm to 2 feet. 
.friday...south winds 10 to 20 knots veering southwest. a chance
of showers. waves building to 1 to 3 feet. 
.saturday...southwest winds 15 to 25 knots veering west. a chance
of showers. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202510140800;;079675

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon oct 13 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 30.5 inch high builds over the canadian prairie into tuesday, 
increasing ridging over lake superior. this high shifts east to the 
great lakes and northern ontario by wednesday at around 30.3 inches. 
ridging weakens to 30.0 inches over lake superior through thursday 
as troughing develops over the plains and the parent high moves 
east. thursday night through friday, a 29.4 inch low develops over 
the northern plains and lifts near to lake winnipeg. this low is 
projected to bring 29.5 to 29.6 inch troughing over lake superior 
this weekend as the low traverses northern ontario.



lsz263-140800-
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 pm edt mon oct 13 2025

.late this afternoon...west winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet. 
.tonight...west winds 15 to 25 knots becoming northwest 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.tuesday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing northwest late. waves
subsiding to calm to 2 feet. 
.tuesday night...west winds less than 10 knots veering north
late. a slight chance of showers through midnight. waves calm to
2 feet. 
.wednesday...southeast winds less than 10 knots becoming
southwest 5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds less than 10 knots increasing
to 5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots backing southeast by mid
afternoon. a chance of showers through early afternoon, then
showers by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...south winds 10 to 20 knots. showers likely.
waves 1 to 3 feet. 
.friday...south winds 15 to 25 knots veering southwest. a chance
of showers. waves building to 2 to 4 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202510140800;;079676

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon oct 13 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 30.5 inch high builds over the canadian prairie into tuesday, 
increasing ridging over lake superior. this high shifts east to the 
great lakes and northern ontario by wednesday at around 30.3 inches. 
ridging weakens to 30.0 inches over lake superior through thursday 
as troughing develops over the plains and the parent high moves 
east. thursday night through friday, a 29.4 inch low develops over 
the northern plains and lifts near to lake winnipeg. this low is 
projected to bring 29.5 to 29.6 inch troughing over lake superior 
this weekend as the low traverses northern ontario.



lsz264-140800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt mon oct 13 2025

.late this afternoon...west winds 20 to 30 knots. waves 5 to
8 feet occasionally to 10 feet. 
.tonight...west winds 15 to 25 knots veering northwest after
midnight, then diminishing to 10 to 20 knots late. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon, then backing northwest late. waves
subsiding to calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots veering north
after midnight, then diminishing to less than 10 knots late.
waves calm to 2 feet. 
.wednesday...southwest winds less than 10 knots. waves calm to
2 feet. 
.wednesday night...south winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots becoming southeast 15 to
25 knots by mid afternoon. showers likely by mid afternoon. waves
building to 2 to 4 feet. 
.thursday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.friday...south winds 10 to 20 knots. showers likely, then a
chance of showers. waves 2 to 4 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202510140800;;079677

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon oct 13 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 30.5 inch high builds over the canadian prairie into tuesday, 
increasing ridging over lake superior. this high shifts east to the 
great lakes and northern ontario by wednesday at around 30.3 inches. 
ridging weakens to 30.0 inches over lake superior through thursday 
as troughing develops over the plains and the parent high moves 
east. thursday night through friday, a 29.4 inch low develops over 
the northern plains and lifts near to lake winnipeg. this low is 
projected to bring 29.5 to 29.6 inch troughing over lake superior 
this weekend as the low traverses northern ontario.



lsz265-140800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt mon oct 13 2025

.late this afternoon...west winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...west winds 15 to 25 knots veering northwest after
midnight. waves 2 to 4 feet. 
.tuesday...northwest winds 15 to 25 knots becoming north 10 to
20 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...north winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.wednesday...north winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. showers likely by mid afternoon. waves
calm to 2 feet. 
.thursday night...south winds 15 to 25 knots. showers. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.friday...south winds 15 to 25 knots. showers likely. waves calm
to 2 feet. 
.saturday...west winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202510140800;;079678

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon oct 13 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 30.5 inch high builds over the canadian prairie into tuesday, 
increasing ridging over lake superior. this high shifts east to the 
great lakes and northern ontario by wednesday at around 30.3 inches. 
ridging weakens to 30.0 inches over lake superior through thursday 
as troughing develops over the plains and the parent high moves 
east. thursday night through friday, a 29.4 inch low develops over 
the northern plains and lifts near to lake winnipeg. this low is 
projected to bring 29.5 to 29.6 inch troughing over lake superior 
this weekend as the low traverses northern ontario.



lsz266-140800-
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 pm edt mon oct 13 2025

.late this afternoon...west winds 15 to 25 knots. waves 4 to
8 feet occasionally to 10 feet. 
.tonight...west winds 15 to 25 knots veering northwest after
midnight. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...north winds 15 to 25 knots backing northwest in the
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...north winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.wednesday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots backing south
after midnight. waves calm to 2 feet. 
.thursday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers. waves building to
2 to 4 feet. 
.thursday night...south winds 20 to 30 knots. showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...south winds 20 to 30 knots. showers. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.saturday...southwest winds 10 to 20 knots veering west. a chance
of showers. waves 2 to 4 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202510140800;;079679

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon oct 13 2025

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

a 30.5 inch high builds over the canadian prairie into tuesday, 
increasing ridging over lake superior. this high shifts east to the 
great lakes and northern ontario by wednesday at around 30.3 inches. 
ridging weakens to 30.0 inches over lake superior through thursday 
as troughing develops over the plains and the parent high moves 
east. thursday night through friday, a 29.4 inch low develops over 
the northern plains and lifts near to lake winnipeg. this low is 
projected to bring 29.5 to 29.6 inch troughing over lake superior 
this weekend as the low traverses northern ontario.



lsz267-140800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt mon oct 13 2025

.late this afternoon...west winds 10 to 20 knots. a chance of
showers. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...northwest winds 15 to 25 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots backing northwest by
mid afternoon. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet. 
.thursday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...south winds 20 to 30 knots diminishing to 15 to
25 knots. showers. waves subsiding to 2 to 4 feet. 
.saturday...south winds 10 to 20 knots veering west. showers
likely. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 

$$