fzus63 kdtx 090125
glflh 
expires:202610090930;;767066

open lake forecast for lake huron
national weather service detroit/pontiac mi
925 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>464-090930-
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-
925 pm edt thu oct 8 2026

.rest of tonight...west winds 10 to 15 knots. 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.
waves occasionally around 8 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. 
.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 kdtx 090125
glflh 
expires:202610090930;;767065

open lake forecast for lake huron
national weather service detroit/pontiac mi
925 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.


lhz361-362-090930-
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-
925 pm edt thu oct 8 2026

.rest of tonight...west winds 10 to 15 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet early in the morning. 
.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 kmkx 090215
glflm 
expires:202610090915;;768577

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
915 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 around 30.1 inches will move across the region 
overnight. winds will become southeast on friday and south friday
night, as the high moves to the east and low pressure around 29.2
inches develops 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 to north winds to develop monday night into 
tuesday after the passage of a cold front, as high pressure around
30.1 inches builds into the upper midwest.


lmz261-362-364-366-563-565-567-868-090915-
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-
915 pm cdt thu oct 8 2026

sheboygan wi to pentwater mi north...

.rest of 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 winds to 30 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 6 ft occasionally to 8 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 090215
glflm 
expires:202610090915;;768578

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
915 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 around 30.1 inches will move across the region 
overnight. winds will become southeast on friday and south friday
night, as the high moves to the east and low pressure around 29.2
inches develops 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 to north winds to develop monday night into 
tuesday after the passage of a cold front, as high pressure around
30.1 inches builds into the upper midwest.


lmz080-669-671-673-675-777-779-870-872-874-876-878-090915-
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-
915 pm cdt thu oct 8 2026

sheboygan wi to pentwater mi south...

.rest of tonight...west winds 10 to 20 kt becoming southwest 5 to
10 kt. 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 subsiding to 4 to
7 ft occasionally to 9 ft. 
.sunday...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 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 090201
glfls 
expires:202610090800;;767692

open lake forecast for lake superior
national weather service marquette mi
1000 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...

through friday morning, a high will build to 30.2 inches south of 
the lower great lakes which will cause ridging of 30.1 inches over 
lake superior. this ridge is separating a pair of 29.4 inch lows, 
one over southern alberta and one off the labrador coast. throughout 
the day and into saturday morning, the high will build to 30.4 
inches over new york as the alberta low moves to southern 
saskatchewan. meanwhile, 29.7 inch hurricane isaias will move up the 
alabama/mississippi state line, eventually helping to kick the high 
east as it weakens. by early sunday morning, the canada low will 
split into 2 weaker 29.6 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
meanwhile, the high will shift ot the new england coastline, ushered 
east by the tropical remnants now at 29.9 inches over tennessee. for 
sunday evening, the plains low will shift to eastern colorado at 
29.6 inches, extending a 29.8 inch trough over lake superior as the 
high and tropical remnants shift further east. the colorado low 
crosses the great lakes basin early next week, followed by 30.2 inch 
high pressure for the midweek.




lsz267-090800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt thu oct 8 2026

.rest of tonight...west winds 10 to 20 knots veering northwest
after midnight. a slight chance of showers by midnight. waves
3 to 6 feet occasionally to 8 feet subsiding to 2 to 4 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 5 to 9 feet
occasionally to 11 feet. 
.saturday night...south winds 20 to 30 knots. waves subsiding to
4 to 8 feet occasionally to 10 feet. 
.sunday...south winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.sunday night...south winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. waves 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 3 to 6 feet occasionally to 8 feet. 
.tuesday...north winds 15 to 25 knots becoming northwest 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090201
glfls 
expires:202610090800;;767687

open lake forecast for lake superior
national weather service marquette mi
1000 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...

through friday morning, a high will build to 30.2 inches south of 
the lower great lakes which will cause ridging of 30.1 inches over 
lake superior. this ridge is separating a pair of 29.4 inch lows, 
one over southern alberta and one off the labrador coast. throughout 
the day and into saturday morning, the high will build to 30.4 
inches over new york as the alberta low moves to southern 
saskatchewan. meanwhile, 29.7 inch hurricane isaias will move up the 
alabama/mississippi state line, eventually helping to kick the high 
east as it weakens. by early sunday morning, the canada low will 
split into 2 weaker 29.6 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
meanwhile, the high will shift ot the new england coastline, ushered 
east by the tropical remnants now at 29.9 inches over tennessee. for 
sunday evening, the plains low will shift to eastern colorado at 
29.6 inches, extending a 29.8 inch trough over lake superior as the 
high and tropical remnants shift further east. the colorado low 
crosses the great lakes basin early next week, followed by 30.2 inch 
high pressure for the midweek.




lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt thu oct 8 2026 /900 pm cdt thu oct 8 2026/

.rest of 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 2 to 4 feet. 
.friday night...east winds 15 to 25 knots veering southeast after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday...southeast winds 10 to 20 knots becoming south 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.saturday night...south winds 20 to 30 knots becoming southwest
15 to 25 knots 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 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 090201
glfls 
expires:202610090800;;767690

open lake forecast for lake superior
national weather service marquette mi
1000 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...

through friday morning, a high will build to 30.2 inches south of 
the lower great lakes which will cause ridging of 30.1 inches over 
lake superior. this ridge is separating a pair of 29.4 inch lows, 
one over southern alberta and one off the labrador coast. throughout 
the day and into saturday morning, the high will build to 30.4 
inches over new york as the alberta low moves to southern 
saskatchewan. meanwhile, 29.7 inch hurricane isaias will move up the 
alabama/mississippi state line, eventually helping to kick the high 
east as it weakens. by early sunday morning, the canada low will 
split into 2 weaker 29.6 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
meanwhile, the high will shift ot the new england coastline, ushered 
east by the tropical remnants now at 29.9 inches over tennessee. for 
sunday evening, the plains low will shift to eastern colorado at 
29.6 inches, extending a 29.8 inch trough over lake superior as the 
high and tropical remnants shift further east. the colorado low 
crosses the great lakes basin early next week, followed by 30.2 inch 
high pressure for the midweek.




lsz265-090800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt thu oct 8 2026

.rest of tonight...west winds 15 to 25 knots veering northwest
after midnight, then diminishing to 10 to 20 knots late. waves
1 to 3 feet 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 4 to 7 feet occasionally to 9 feet. 
.saturday...southeast winds 20 to 30 knots veering south by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.saturday night...south winds 20 to 30 knots becoming southwest
gales to 35 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 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 1 to 3 feet. 
.monday...north winds 20 to 30 knots. a chance of showers, then
showers likely. waves building to 3 to 6 feet occasionally to
8 feet. 
.tuesday...north winds 15 to 25 knots backing northwest. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090201
glfls 
expires:202610090800;;767688

open lake forecast for lake superior
national weather service marquette mi
1000 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...

through friday morning, a high will build to 30.2 inches south of 
the lower great lakes which will cause ridging of 30.1 inches over 
lake superior. this ridge is separating a pair of 29.4 inch lows, 
one over southern alberta and one off the labrador coast. throughout 
the day and into saturday morning, the high will build to 30.4 
inches over new york as the alberta low moves to southern 
saskatchewan. meanwhile, 29.7 inch hurricane isaias will move up the 
alabama/mississippi state line, eventually helping to kick the high 
east as it weakens. by early sunday morning, the canada low will 
split into 2 weaker 29.6 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
meanwhile, the high will shift ot the new england coastline, ushered 
east by the tropical remnants now at 29.9 inches over tennessee. for 
sunday evening, the plains low will shift to eastern colorado at 
29.6 inches, extending a 29.8 inch trough over lake superior as the 
high and tropical remnants shift further east. the colorado low 
crosses the great lakes basin early next week, followed by 30.2 inch 
high pressure for the midweek.




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-
1000 pm edt thu oct 8 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
after midnight. waves 1 to 3 feet 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 6 feet occasionally to 8 feet. 
.saturday...southeast winds 15 to 25 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 building to 4 to 8 feet occasionally to
10 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 subsiding to calm to 2 feet,
then 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 090201
glfls 
expires:202610090800;;767689

open lake forecast for lake superior
national weather service marquette mi
1000 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...

through friday morning, a high will build to 30.2 inches south of 
the lower great lakes which will cause ridging of 30.1 inches over 
lake superior. this ridge is separating a pair of 29.4 inch lows, 
one over southern alberta and one off the labrador coast. throughout 
the day and into saturday morning, the high will build to 30.4 
inches over new york as the alberta low moves to southern 
saskatchewan. meanwhile, 29.7 inch hurricane isaias will move up the 
alabama/mississippi state line, eventually helping to kick the high 
east as it weakens. by early sunday morning, the canada low will 
split into 2 weaker 29.6 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
meanwhile, the high will shift ot the new england coastline, ushered 
east by the tropical remnants now at 29.9 inches over tennessee. for 
sunday evening, the plains low will shift to eastern colorado at 
29.6 inches, extending a 29.8 inch trough over lake superior as the 
high and tropical remnants shift further east. the colorado low 
crosses the great lakes basin early next week, followed by 30.2 inch 
high pressure for the midweek.




lsz264-090800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt thu oct 8 2026

.rest of tonight...northwest winds 5 to 15 knots. waves 1 to
3 feet 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 6 to 10 feet occasionally to
13 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
after midnight. waves subsiding to 4 to 8 feet occasionally to
10 feet. 
.sunday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.sunday night...southwest winds 15 to 25 knots veering north
after midnight. a chance of showers. waves subsiding to 1 to
3 feet, then 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, then subsiding to
2 to 4 feet. 
.tuesday...north winds 10 to 20 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090201
glfls 
expires:202610090800;;767691

open lake forecast for lake superior
national weather service marquette mi
1000 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...

through friday morning, a high will build to 30.2 inches south of 
the lower great lakes which will cause ridging of 30.1 inches over 
lake superior. this ridge is separating a pair of 29.4 inch lows, 
one over southern alberta and one off the labrador coast. throughout 
the day and into saturday morning, the high will build to 30.4 
inches over new york as the alberta low moves to southern 
saskatchewan. meanwhile, 29.7 inch hurricane isaias will move up the 
alabama/mississippi state line, eventually helping to kick the high 
east as it weakens. by early sunday morning, the canada low will 
split into 2 weaker 29.6 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
meanwhile, the high will shift ot the new england coastline, ushered 
east by the tropical remnants now at 29.9 inches over tennessee. for 
sunday evening, the plains low will shift to eastern colorado at 
29.6 inches, extending a 29.8 inch trough over lake superior as the 
high and tropical remnants shift further east. the colorado low 
crosses the great lakes basin early next week, followed by 30.2 inch 
high pressure for the midweek.




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-
1000 pm edt thu oct 8 2026

.rest of tonight...west winds 10 to 20 knots veering northwest
after midnight. a slight chance of showers by midnight. waves
3 to 5 feet occasionally to 7 feet 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 6 to 10 feet occasionally to
13 feet. 
.saturday night...south winds 20 to 30 knots. waves subsiding to
5 to 8 feet occasionally to 10 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 3 to 6 feet occasionally to
8 feet. 
.tuesday...north winds 20 to 30 knots becoming northwest 10 to
20 knots. waves subsiding to calm to 2 feet. 

$$