fzus63 kdtx 081956
glflh 
expires:202610090400;;754572

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 pm edt thu oct 8 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...low pressure over quebec departs on friday as high
pressure builds in from the west. winds will decrease and shift
southerly once the center of the high builds into the ohio
valley. rain-free conditions expected until the remnants of
hurricane isaias arrive saturday night or sunday, along with
increasing wind speeds.


lhz361-362-090400-
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-
356 pm edt thu oct 8 2026

.tonight...west winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late evening and
overnight. waves 4 to 6 feet subsiding to 2 to 4 feet early in
the morning. waves occasionally around 8 feet. 
.friday...west winds 10 to 15 knots veering to the northwest
early in the afternoon...then becoming northwest 10 to 15 knots
late in the afternoon. waves 1 to 3 feet. 
.friday night...light and variable winds becoming east 5 to
10 knots by midnight...then becoming southeast 10 to 15 knots
after midnight. waves 2 feet or less. 
.saturday...southeast winds 15 to 20 knots increasing to 20 to
25 knots with gusts to 35 knot gales in the late morning and
afternoon. waves 3 to 5 feet building to 6 to 9 feet in the late
morning and afternoon. waves occasionally around 12 feet. 
.saturday night...south winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots with gusts to around
30 knots in the late evening and overnight. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday...south winds 10 to 15 knots increasing to 15 to 20 knots
late in the morning...then decreasing to 10 to 15 knots late in
the afternoon decreasing to 5 to 10 knots late in the evening.
waves 3 to 5 feet. 
.monday...southwest winds 5 to 10 knots increasing to 10 to
15 knots . a chance of rain early in the evening. rain likely by
midnight. waves 1 to 3 feet building to 2 to 4 feet by midnight. 
.tuesday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots by midnight. rain likely
early in the morning. waves 3 to 5 feet. 


$$

fzus63 kdtx 081956
glflh 
expires:202610090400;;754573

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 pm edt thu oct 8 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...low pressure over quebec departs on friday as high
pressure builds in from the west. winds will decrease and shift
southerly once the center of the high builds into the ohio
valley. rain-free conditions expected until the remnants of
hurricane isaias arrive saturday night or sunday, along with
increasing wind speeds.


lhz363-462>464-090400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
356 pm edt thu oct 8 2026

.tonight...west winds 15 to 20 knots decreasing to 10 to 15 knots
in the late evening and overnight. waves 3 to 5 feet subsiding to
1 to 3 feet early in the morning. 
.friday...southwest winds 10 to 15 knots becoming west 5 to
10 knots in the afternoon. waves 1 to 3 feet. 
.friday night...east winds 5 to 10 knots becoming southeast 10 to
15 knots after midnight. waves 2 feet or less. 
.saturday...southeast winds 15 to 20 knots. gusts to 30 knots
early in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.saturday night...south winds 15 to 20 knots. waves 4 to 6 feet. 
.sunday...south winds 10 to 15 knots becoming southeast 5 to
10 knots late in the evening. a chance of rain. waves 2 to 4 feet
subsiding to 1 to 3 feet late in the afternoon. waves
occasionally around 8 feet. 
.monday...southwest winds 5 to 10 knots increasing to 10 to
15 knots . a chance of rain by midnight. waves 1 to 3 feet
building to 2 to 4 feet by midnight. 
.tuesday...west winds 15 to 20 knots veering to the northwest . a
chance of rain until afternoon. waves 4 to 6 feet. 


$$

fzus63 kmkx 081950
glflm 
expires:202610090315;;754447

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
250 pm cdt thu oct 8 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...

high pressure of 30.1 inches will cross wisconsin tonight. 
winds will become southerly on friday as the high departs and 
low pressure around 29.2 inches develops in the northern plains.
the tight pressure gradient over lake michigan will produce 
breezy southerly winds up to 30 knots from friday night through 
sunday morning. a few gale force gusts may occur in the northern
half of the lake saturday afternoon and evening. 

lighter winds are expected monday as a weak low pressure trough 
around 29.7 inches slowly moves from minnesota to wisconsin. look 
for gusty northwest winds to develop monday night into 
tuesday after the passage of a cold front as high pressure of 
30.1 inches builds into the upper midwest. 


lmz261-362-364-366-563-565-567-868-090315-
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-
250 pm cdt thu oct 8 2026

sheboygan wi to pentwater mi north...

.tonight...northwest winds 10 to 20 kt becoming west. waves 2 to
4 ft subsiding to 1 to 3 ft. 
.friday...northwest winds 10 to 15 kt veering to southeast. waves
1 to 2 ft. 
.friday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. waves 1 to 3 ft building to 4 to 7 ft occasionally to
9 ft. 
.saturday...south winds to 30 kt. waves 6 to 9 ft occasionally to
12 ft building to 7 to 10 ft occasionally to 13 ft. 
.saturday night...south gales to 35 kt. waves 7 to 10 ft
occasionally to 13 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.sunday...south winds to 30 kt. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.sunday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.tuesday...north winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.  

$$

fzus63 kmkx 081950
glflm 
expires:202610090315;;754448

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
250 pm cdt thu oct 8 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...

high pressure of 30.1 inches will cross wisconsin tonight. 
winds will become southerly on friday as the high departs and 
low pressure around 29.2 inches develops in the northern plains.
the tight pressure gradient over lake michigan will produce 
breezy southerly winds up to 30 knots from friday night through 
sunday morning. a few gale force gusts may occur in the northern
half of the lake saturday afternoon and evening. 

lighter winds are expected monday as a weak low pressure trough 
around 29.7 inches slowly moves from minnesota to wisconsin. look 
for gusty northwest winds to develop monday night into 
tuesday after the passage of a cold front as high pressure of 
30.1 inches builds into the upper midwest. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-090315-
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-
250 pm cdt thu oct 8 2026

sheboygan wi to pentwater mi south...

.tonight...west winds 10 to 20 kt diminishing to 10 to 15 kt
after midnight, then becoming southwest late. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.friday...southwest winds 5 to 10 kt becoming southeast. waves
1 to 3 ft. 
.friday night...southeast winds 10 to 20 kt becoming south 15 to
25 kt. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft. 
.saturday...south winds to 30 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.saturday night...south winds to 30 kt diminishing to 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.sunday night...south winds 10 to 15 kt becoming southwest. waves
2 to 4 ft subsiding to 1 to 2 ft. 
.monday...southwest winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.tuesday...north winds 15 to 25 kt. waves 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmqt 082002
glfls 
expires:202610090800;;754811

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu oct 8 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...

ridging continues to build to 30.0 inches inches tonight as the 30.1 
inch parent high digs from the northern plains into the mid-
atlantic. a 29.2 inch clipper over southern alberta on friday night 
splits and creates a 29.5 inch low over the northern plains and 
canadian prairies by saturday. this low is expected to bring a 
gradient of 29.7 to 30.1 inch troughing back over lake superior on 
saturday, which flattens out to around 29.8 inch troughing by sunday 
evening as the low weakens to 29.7 inches near lake winnipeg by the 
end of the weekend. a subtle 29.7 inch shortwave low moves over the 
lake sunday night and remains through monday evening. an area of 
high pressure builds over the northern plains monday night into 
tuesday morning and is expected to move into the area tuesday 
afternoon, building to 30.2 inches by wednesday morning.




lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt thu oct 8 2026 /301 pm cdt thu oct 8 2026/

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

$$

fzus63 kmqt 082002
glfls 
expires:202610090800;;754812

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu oct 8 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...

ridging continues to build to 30.0 inches inches tonight as the 30.1 
inch parent high digs from the northern plains into the mid-
atlantic. a 29.2 inch clipper over southern alberta on friday night 
splits and creates a 29.5 inch low over the northern plains and 
canadian prairies by saturday. this low is expected to bring a 
gradient of 29.7 to 30.1 inch troughing back over lake superior on 
saturday, which flattens out to around 29.8 inch troughing by sunday 
evening as the low weakens to 29.7 inches near lake winnipeg by the 
end of the weekend. a subtle 29.7 inch shortwave low moves over the 
lake sunday night and remains through monday evening. an area of 
high pressure builds over the northern plains monday night into 
tuesday morning and is expected to move into the area tuesday 
afternoon, building to 30.2 inches by wednesday morning.




lsz263-090800-
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 thu oct 8 2026

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

$$

fzus63 kmqt 082002
glfls 
expires:202610090800;;754813

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu oct 8 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...

ridging continues to build to 30.0 inches inches tonight as the 30.1 
inch parent high digs from the northern plains into the mid-
atlantic. a 29.2 inch clipper over southern alberta on friday night 
splits and creates a 29.5 inch low over the northern plains and 
canadian prairies by saturday. this low is expected to bring a 
gradient of 29.7 to 30.1 inch troughing back over lake superior on 
saturday, which flattens out to around 29.8 inch troughing by sunday 
evening as the low weakens to 29.7 inches near lake winnipeg by the 
end of the weekend. a subtle 29.7 inch shortwave low moves over the 
lake sunday night and remains through monday evening. an area of 
high pressure builds over the northern plains monday night into 
tuesday morning and is expected to move into the area tuesday 
afternoon, building to 30.2 inches by wednesday morning.




lsz264-090800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt thu oct 8 2026

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

$$

fzus63 kmqt 082002
glfls 
expires:202610090800;;754814

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu oct 8 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...

ridging continues to build to 30.0 inches inches tonight as the 30.1 
inch parent high digs from the northern plains into the mid-
atlantic. a 29.2 inch clipper over southern alberta on friday night 
splits and creates a 29.5 inch low over the northern plains and 
canadian prairies by saturday. this low is expected to bring a 
gradient of 29.7 to 30.1 inch troughing back over lake superior on 
saturday, which flattens out to around 29.8 inch troughing by sunday 
evening as the low weakens to 29.7 inches near lake winnipeg by the 
end of the weekend. a subtle 29.7 inch shortwave low moves over the 
lake sunday night and remains through monday evening. an area of 
high pressure builds over the northern plains monday night into 
tuesday morning and is expected to move into the area tuesday 
afternoon, building to 30.2 inches by wednesday morning.




lsz265-090800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt thu oct 8 2026

.late this afternoon...west winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots veering northwest after
midnight, then diminishing to 10 to 20 knots late. waves
subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots veering east in the
afternoon, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.friday night...southeast winds 15 to 25 knots increasing to
30 knots with a few gale force gusts to 35 knots possible. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday...southeast winds 20 to 30 knots veering south by mid
afternoon. waves subsiding to 3 to 5 feet occasionally to 7 feet.
.saturday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. waves subsiding to 2 to 4 feet.
.sunday...southwest winds 15 to 25 knots becoming south 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.sunday night...south winds 15 to 25 knots veering west after
midnight. waves building to 2 to 4 feet. 
.monday...north winds 20 to 30 knots. a chance of showers, then
showers likely. waves building to 5 to 8 feet occasionally to
10 feet. 
.tuesday...north winds 15 to 25 knots backing northwest. waves
subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 082002
glfls 
expires:202610090800;;754815

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu oct 8 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...

ridging continues to build to 30.0 inches inches tonight as the 30.1 
inch parent high digs from the northern plains into the mid-
atlantic. a 29.2 inch clipper over southern alberta on friday night 
splits and creates a 29.5 inch low over the northern plains and 
canadian prairies by saturday. this low is expected to bring a 
gradient of 29.7 to 30.1 inch troughing back over lake superior on 
saturday, which flattens out to around 29.8 inch troughing by sunday 
evening as the low weakens to 29.7 inches near lake winnipeg by the 
end of the weekend. a subtle 29.7 inch shortwave low moves over the 
lake sunday night and remains through monday evening. an area of 
high pressure builds over the northern plains monday night into 
tuesday morning and is expected to move into the area tuesday 
afternoon, building to 30.2 inches by wednesday morning.




lsz266-090800-
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 thu oct 8 2026

.late this afternoon...northwest winds 20 to 30 knots. waves 5 to
9 feet occasionally to 11 feet. 
.tonight...west winds 15 to 25 knots becoming northwest 10 to
20 knots after midnight. a slight chance of showers through
midnight. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots veering east late. waves
subsiding to calm to 2 feet. 
.friday night...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...southeast winds 20 to 30 knots veering south by mid
afternoon. waves building to 4 to 8 feet occasionally to 10 feet.
.saturday night...south winds 20 to 30 knots. waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.sunday...south winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.sunday night...south winds 15 to 25 knots veering southwest
after midnight. waves 2 to 4 feet. 
.monday...north winds 20 to 30 knots. a chance of showers, then
showers likely. waves building to 5 to 8 feet occasionally to
10 feet. 
.tuesday...north winds 20 to 30 knots becoming northwest 10 to
20 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 082002
glfls 
expires:202610090800;;754816

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu oct 8 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...

ridging continues to build to 30.0 inches inches tonight as the 30.1 
inch parent high digs from the northern plains into the mid-
atlantic. a 29.2 inch clipper over southern alberta on friday night 
splits and creates a 29.5 inch low over the northern plains and 
canadian prairies by saturday. this low is expected to bring a 
gradient of 29.7 to 30.1 inch troughing back over lake superior on 
saturday, which flattens out to around 29.8 inch troughing by sunday 
evening as the low weakens to 29.7 inches near lake winnipeg by the 
end of the weekend. a subtle 29.7 inch shortwave low moves over the 
lake sunday night and remains through monday evening. an area of 
high pressure builds over the northern plains monday night into 
tuesday morning and is expected to move into the area tuesday 
afternoon, building to 30.2 inches by wednesday morning.




lsz267-090800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt thu oct 8 2026

.late this afternoon...northwest winds 20 to 30 knots. waves 6 to
10 feet occasionally to 13 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers through
midnight. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering east late. waves
subsiding to calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots increasing to 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday...southeast gales to 35 knots becoming south 20 to
30 knots by mid afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...south 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...south winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 
.sunday night...south winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. waves building to 2 to 4 feet. 
.monday...north winds 15 to 25 knots increasing to 20 to
30 knots. a chance of showers, then showers likely. waves
building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...north winds 15 to 25 knots becoming northwest 10 to
20 knots. waves subsiding to 2 to 4 feet. 

$$