fzus63 kdtx 131945
glflh 
expires:202609140345;;398909

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm edt sun sep 13 2026

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...post-frontal northwest flow becomes breezy this
afternoon through monday morning with scattered showers possible.
high pressure, 30.20 inches, then arrives monday bringing relaxed
flow and dry weather. low pressure, 29.40 inches, then tracks
across ontario tuesday which elevates wind gusts toward gale
force across north and central lake huron.


lhz361-140345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
345 pm edt sun sep 13 2026

.tonight...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots after midnight. waves 3 to
5 feet. 
.monday...northwest winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.monday night...southeast winds 10 to 15 knots becoming south
20 to 25 knots with gusts to 35 knot gales in the late evening
and overnight. showers after midnight. waves 1 to 3 feet building
to 6 to 9 feet in the late evening and overnight. waves
occasionally around 12 feet. 
.tuesday...south winds 20 to 25 knots with gusts to 35 knot gales
becoming southwest 15 to 20 knots with gusts to around 30 knots
in the late morning and afternoon. showers in the morning. waves
6 to 9 feet. waves occasionally around 12 feet. 
.tuesday night...southwest winds 10 to 15 knots veering to the
northwest by midnight...then decreasing to 5 to 10 knots after
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight. 
.wednesday...northwest winds 5 to 10 knots in the morning
becoming light and variable. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots backing to the west early
in the evening...then veering to the northwest by midnight. waves
2 feet or less. 
.friday...north winds 5 to 10 knots until afternoon becoming
light and variable...then becoming southeast 5 to 10 knots by
midnight. a chance of showers by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 131945
glflh 
expires:202609140345;;398910

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm edt sun sep 13 2026

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...post-frontal northwest flow becomes breezy this
afternoon through monday morning with scattered showers possible.
high pressure, 30.20 inches, then arrives monday bringing relaxed
flow and dry weather. low pressure, 29.40 inches, then tracks
across ontario tuesday which elevates wind gusts toward gale
force across north and central lake huron.


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-
345 pm edt sun sep 13 2026

...gale watch in effect from late monday night through tuesday
afternoon...

.tonight...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots after midnight. waves 5 to
7 feet. waves occasionally around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet in the
afternoon. 
.monday night...southeast winds 5 to 10 knots becoming south to
30 knots with gusts to 35 knot gales. a chance of showers after
midnight. waves 2 feet or less building to 8 to 12 feet. waves
occasionally around 15 feet. 
.tuesday...south winds to 30 knots becoming southwest 15 to
20 knots early in the afternoon. gusts to 35 knot gales. showers
likely. waves 10 to 14 feet. waves occasionally around 18 feet. 
.tuesday night...southwest winds 10 to 15 knots veering to the
northwest after midnight. waves 3 to 5 feet. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots increasing to 10 to
15 knots by midnight. waves 2 feet or less. 
.friday...north winds 5 to 10 knots veering to the northeast by
midnight. a chance of showers by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 131945
glflh 
expires:202609140345;;398911

open lake forecast for lake huron
national weather service detroit/pontiac mi
345 pm edt sun sep 13 2026

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...post-frontal northwest flow becomes breezy this
afternoon through monday morning with scattered showers possible.
high pressure, 30.20 inches, then arrives monday bringing relaxed
flow and dry weather. low pressure, 29.40 inches, then tracks
across ontario tuesday which elevates wind gusts toward gale
force across north and central lake huron.


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-
345 pm edt sun sep 13 2026

.tonight...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots after midnight. a chance of
showers in the evening. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.monday...northwest winds 10 to 15 knots becoming light and
variable. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon. 
.monday night...northeast winds 5 to 10 knots becoming southeast
10 to 15 knots by midnight...then becoming south 20 to 25 knots
with gusts to around 30 knots after midnight. waves 1 to 3 feet
building to 5 to 7 feet after midnight. waves occasionally around
10 feet. 
.tuesday...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots early in the afternoon. a
chance of showers. waves 6 to 9 feet. waves occasionally around
12 feet. 
.tuesday night...southwest winds 10 to 15 knots decreasing to
5 to 10 knots by midnight...then becoming northwest 10 to
15 knots after midnight. a chance of showers in the evening.
waves 3 to 5 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots. a chance of showers late in the evening. waves 1 to
3 feet. 
.thursday...northeast winds 5 to 10 knots becoming north 10 to
15 knots . a chance of showers early in the morning. waves 1 to
3 feet. 
.friday...north winds 10 to 15 knots decreasing to 5 to 10 knots
until early evening...then becoming northeast 10 to 15 knots by
midnight. a chance of showers by midnight. waves 1 to 3 feet. 


$$

fzus63 kmkx 131938
glflm 
expires:202609140400;;398698

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 pm cdt sun sep 13 2026

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...

light to moderate northwest winds this afternoon and evening then
becoming light and variable late tonight and monday morning. 
winds will ease as high pressure around 30.3 inches moves across 
the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for much of 
lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northeasterly and weaken behind a cold front tuesday 
night into wednesday.


lmz261-362-364-366-563-565-567-868-140400-
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-
238 pm cdt sun sep 13 2026

sheboygan wi to pentwater mi north...

...gale watch in effect from monday evening through tuesday
afternoon...

.tonight...northwest winds 15 to 25 kt becoming north 10 to 15 
kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...north winds 5 to 10 kt veering to southeast late in the
morning, then becoming south 10 to 20 kt early in the afternoon
increasing to 15 to 25 kt late. waves 1 to 3 ft building to 3 to
5 ft. 
.monday night...south winds to 30 kt increasing to gales to
40 kt. chance of showers in the evening, then showers overnight.
waves 4 to 7 ft occasionally to 9 ft building to 10 to 14 ft
occasionally to 18 ft. 
.tuesday...southwest gales to 40 kt diminishing to gales to
35 kt. chance of showers in the morning. waves 10 to 14 ft
occasionally to 18 ft subsiding to 7 to 10 ft occasionally to
13 ft. 
.tuesday night...northwest winds to 30 kt becoming north 10 to
20 kt overnight. waves 4 to 6 ft occasionally to 8 ft subsiding
to 2 to 4 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 2 to 4 ft. 
.wednesday night...northeast winds 10 to 15 kt becoming east.
chance of showers. waves 1 to 3 ft. 
.thursday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 2 to 4 ft. 
.friday...east winds 10 to 20 kt becoming southeast. chance of
showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 131938
glflm 
expires:202609140400;;398699

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 pm cdt sun sep 13 2026

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...

light to moderate northwest winds this afternoon and evening then
becoming light and variable late tonight and monday morning. 
winds will ease as high pressure around 30.3 inches moves across 
the lake into monday morning. 

winds will then increase and veer to south-southwesterly monday 
afternoon into tuesday as low pressure around 29.4 inches 
develops over manitoba. gales appear likely monday night into the
first half of tuesday. a gale watch has been issued for much of 
lake michigan. 

periods of showers and thunderstorms will accompany the 
developing low from as early as monday evening into tuesday. winds
will trend northeasterly and weaken behind a cold front tuesday 
night into wednesday.


lmz669-671-673-675-870-872-874-876-140400-
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 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-
238 pm cdt sun sep 13 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...gale watch in effect from monday evening through tuesday
afternoon...

.tonight...northwest winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming north 10 to 15 kt after midnight
becoming northeast late. waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft. 
.monday...east winds 10 to 15 kt becoming southeast late in the
morning, then increasing to 10 to 20 kt early in the afternoon
becoming south 15 to 25 kt late. waves 2 to 4 ft building to 3 to
5 ft. 
.monday night...south winds to 30 kt increasing to gales to
40 kt. chance of showers and thunderstorms overnight. waves 4 to
7 ft occasionally to 9 ft building to 10 to 14 ft occasionally to
18 ft. 
.tuesday...southwest gales to 35 kt diminishing to 30 kt. showers
likely in the morning, then chance of showers in the afternoon.
waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming north.
chance of showers in the evening. waves 4 to 6 ft occasionally to
8 ft subsiding to 2 to 4 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers. waves 2 to 4 ft. 
.wednesday night...northeast winds 10 to 20 kt becoming east
10 to 15 kt. showers likely with a chance of thunderstorms. waves
2 to 4 ft. 
.thursday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. chance of showers. waves 2 to 4 ft. 
.friday...east winds 10 to 20 kt becoming southeast. chance of
showers. waves 3 to 5 ft.  

$$

fzus63 kmqt 132001
glfls 
expires:202609140800;;399366

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 13 2026

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...

30.0 inch ridging strengthens to 30.2 inches tonight into monday. a 
low around 29.3 inches skirts by lake winnipeg into northern ontario 
monday night, bringing 29.7 inch troughing over lake superior. in 
its stead, 30.2 inch high pressure ridging develops over the 
northern plains on tuesday, which strengthens to 30.4 inches as it 
cross the upper great lakes by wednesday. the high pressure ridging 
looks to remain through the rest of the workweek. 




lsz162-140800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun sep 13 2026 /301 pm cdt sun sep 13 2026/

...gale watch in effect from late monday night through tuesday
afternoon...

.late this afternoon...west winds 10 to 20 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon, then increasing to 15 to 25 knots
late. a chance of showers and a slight chance of thunderstorms by
mid afternoon. waves calm to 2 feet. 
.monday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots late. showers through midnight, then a slight
chance of showers after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...west gales to 40 knots. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots veering northeast. waves
calm to 2 feet. 
.friday...southeast winds 5 to 15 knots becoming east 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202609140800;;399367

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 13 2026

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...

30.0 inch ridging strengthens to 30.2 inches tonight into monday. a 
low around 29.3 inches skirts by lake winnipeg into northern ontario 
monday night, bringing 29.7 inch troughing over lake superior. in 
its stead, 30.2 inch high pressure ridging develops over the 
northern plains on tuesday, which strengthens to 30.4 inches as it 
cross the upper great lakes by wednesday. the high pressure ridging 
looks to remain through the rest of the workweek. 




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 sun sep 13 2026

...gale watch in effect from monday evening through tuesday
evening...

.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...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming southeast 15 to 25 knots late. a
slight chance of showers by mid afternoon. waves calm to 2 feet. 
.monday night...south gales to 35 knots veering southwest late.
showers and a slight chance of thunderstorms through midnight,
then a chance of showers after midnight. waves building to 5 to
8 feet occasionally to 10 feet. 
.tuesday...west gales to 45 knots. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southeast. waves
calm to 2 feet. 
.friday...south winds 5 to 15 knots increasing to 10 to 20 knots.
a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202609140800;;399368

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 13 2026

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...

30.0 inch ridging strengthens to 30.2 inches tonight into monday. a 
low around 29.3 inches skirts by lake winnipeg into northern ontario 
monday night, bringing 29.7 inch troughing over lake superior. in 
its stead, 30.2 inch high pressure ridging develops over the 
northern plains on tuesday, which strengthens to 30.4 inches as it 
cross the upper great lakes by wednesday. the high pressure ridging 
looks to remain through the rest of the workweek. 




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 sun sep 13 2026

...gale watch in effect from monday evening through tuesday
evening...

.late this afternoon...northwest winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south in the
afternoon, then becoming southeast 20 to 30 knots late. waves
building to 2 to 4 feet. 
.monday night...southeast winds 20 to 30 knots becoming south
gales to 35 knots after midnight. showers. waves building to 6 to
10 feet occasionally to 13 feet. 
.tuesday...southwest gales to 45 knots veering west by mid
afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.tuesday night...west winds 20 to 30 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds less than 10 knots backing south by
mid afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southeast. waves
calm to 2 feet. 
.friday...south winds 5 to 15 knots increasing to 10 to 20 knots.
a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202609140800;;399369

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 13 2026

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...

30.0 inch ridging strengthens to 30.2 inches tonight into monday. a 
low around 29.3 inches skirts by lake winnipeg into northern ontario 
monday night, bringing 29.7 inch troughing over lake superior. in 
its stead, 30.2 inch high pressure ridging develops over the 
northern plains on tuesday, which strengthens to 30.4 inches as it 
cross the upper great lakes by wednesday. the high pressure ridging 
looks to remain through the rest of the workweek. 




lsz265-140800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sun sep 13 2026

...gale watch in effect from monday evening through tuesday
evening...

.late this afternoon...northwest gales to 35 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...southwest winds 10 to 20 knots backing southeast in the
afternoon, then increasing to 20 to 30 knots late. waves building
to 2 to 4 feet. 
.monday night...south gales to 40 knots. a slight chance of
thunderstorms through midnight. showers likely. waves building to
6 to 9 feet occasionally to 11 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.tuesday...southwest gales to 45 knots veering west by mid
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.tuesday night...west winds 20 to 30 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots becoming
southwest 5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots backing southeast. waves
calm to 2 feet. 
.friday...southeast winds 10 to 20 knots becoming south 15 to
25 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202609140800;;399370

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 13 2026

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...

30.0 inch ridging strengthens to 30.2 inches tonight into monday. a 
low around 29.3 inches skirts by lake winnipeg into northern ontario 
monday night, bringing 29.7 inch troughing over lake superior. in 
its stead, 30.2 inch high pressure ridging develops over the 
northern plains on tuesday, which strengthens to 30.4 inches as it 
cross the upper great lakes by wednesday. the high pressure ridging 
looks to remain through the rest of the workweek. 




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 sun sep 13 2026

...gale watch in effect from monday evening through tuesday
evening...

.late this afternoon...northwest winds 20 to 30 knots. a slight
chance of showers. waves 4 to 8 feet occasionally to 10 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming south 10 to
20 knots in the afternoon, then becoming southeast 20 to 30 knots
late. waves subsiding to calm to 2 feet, then building to 2 to
4 feet. 
.monday night...south gales to 40 knots. a slight chance of
thunderstorms through midnight. showers. waves building to 8 to
11 feet occasionally to 14 feet. 
.tuesday...southwest gales to 40 knots veering west by mid
afternoon. waves subsiding to 6 to 9 feet occasionally to
11 feet, then building to 9 to 12 feet occasionally to 15 feet. 
.tuesday night...west winds 20 to 30 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 5 to 15 knots veering north by mid
afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering
southwest after midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots veering north. waves calm
to 2 feet. 
.friday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 132001
glfls 
expires:202609140800;;399371

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun sep 13 2026

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...

30.0 inch ridging strengthens to 30.2 inches tonight into monday. a 
low around 29.3 inches skirts by lake winnipeg into northern ontario 
monday night, bringing 29.7 inch troughing over lake superior. in 
its stead, 30.2 inch high pressure ridging develops over the 
northern plains on tuesday, which strengthens to 30.4 inches as it 
cross the upper great lakes by wednesday. the high pressure ridging 
looks to remain through the rest of the workweek. 




lsz267-140800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sun sep 13 2026

...gale watch in effect from monday evening through tuesday
evening...

.late this afternoon...northwest winds 20 to 30 knots. a slight
chance of showers. waves 4 to 7 feet occasionally to 9 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 
.monday...west winds 5 to 15 knots backing south in the
afternoon, then backing southeast late. waves subsiding to calm
to 2 feet. 
.monday night...south winds 20 to 30 knots increasing to gales to
40 knots after midnight. showers. waves building to 7 to 10 feet
occasionally to 13 feet. 
.tuesday...southwest gales to 35 knots becoming west 20 to
30 knots by mid afternoon. a slight chance of showers through
early afternoon. waves subsiding to 4 to 7 feet occasionally to
9 feet, then building to 7 to 10 feet occasionally to 13 feet. 
.tuesday night...west winds 20 to 30 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots veering northwest. waves
calm to 2 feet. 
.friday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$