fzus63 kdtx 100140
glflh 
expires:202610100945;;826857

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt fri oct 9 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...high pressure, 30.30 inches, will depart from the
eastern great lakes into new england tonight into tomorrow.
remnants from hurricane isaias will then work its way up into the
ohio valley tomorrow, producing breezy southeast flow across the
great lakes.


lhz361-362-100945-
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-
940 pm edt fri oct 9 2026

.rest of tonight...northeast winds 5 to 10 knots veering to the
east after midnight...then becoming southeast 10 to 15 knots
early in the morning. waves 2 feet or less. 
.saturday...southeast winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots in the 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 6 to 9 feet.
waves occasionally around 12 feet. 
.sunday...south winds 10 to 15 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.sunday night...southeast winds 10 to 15 knots becoming south
5 to 10 knots in the late evening and overnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. 
.monday...southwest winds 5 to 10 knots becoming south 10 to
15 knots late in the afternoon. rain likely late in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon. 
.tuesday...north winds 15 to 20 knots decreasing to 10 to
15 knots . waves 2 to 4 feet. 
.wednesday...north winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 100140
glflh 
expires:202610100945;;826858

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 pm edt fri oct 9 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...high pressure, 30.30 inches, will depart from the
eastern great lakes into new england tonight into tomorrow.
remnants from hurricane isaias will then work its way up into the
ohio valley tomorrow, producing breezy southeast flow across the
great lakes.


lhz363-462-100945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
940 pm edt fri oct 9 2026

.rest of tonight...east winds 5 to 10 knots becoming southeast
10 to 15 knots after midnight. waves 1 to 3 feet. 
.saturday...southeast winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then becoming south 15 to 20 knots with gusts
to around 30 knots late in the afternoon. waves 4 to 6 feet
building to 6 to 9 feet in the afternoon. waves occasionally
around 12 feet. 
.saturday night...south winds 15 to 20 knots. gusts to 30 knots
by midnight. waves 5 to 7 feet. waves occasionally around
10 feet. 
.sunday...southeast winds 10 to 15 knots. a chance of rain. waves
3 to 5 feet. 
.sunday night...southeast winds 5 to 10 knots veering to the
southwest after midnight. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots becoming southwest 15 to
20 knots. a chance of rain late in the afternoon. rain likely
late in the evening. waves 1 to 3 feet building to 2 to 4 feet
late in the afternoon. 
.tuesday...north winds 15 to 20 knots decreasing to 10 to
15 knots by midnight. rain likely early in the morning. waves
3 to 5 feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming northeast 10 to
15 knots by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet.


$$

fzus63 kmkx 100203
glflm 
expires:202610100930;;827270

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt fri oct 9 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 30.2 inches will continue to push east
overnight, while low pressure around 29.2 inches develops over the
northern plains. southeast winds will shift south overnight.

expect winds to increase for saturday, as lake michigan sits
between the two systems, and has the potential to produce 
southerly gusts up to 30 knots through early sunday morning. a 
few gale force gusts are possible across the northern portions of
the lake saturday afternoon and evening. no gale headlines are
expected at this time.

the main low pressure system weakens to around 29.6 inches 
sunday, as it lifts from ontario into the james bay region. this 
will drag a cold front across the upper great lakes later sunday 
into monday, as south to southwest winds shift north later monday
into tuesday. could see a few gale force gusts monday night into 
tuesday behind the cold frontal passage. winds should gradually 
ease through the middle of the week, as another high pressure 
system around 30.2 inches builds across the upper great lakes 
region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-100930-
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-
903 pm cdt fri oct 9 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 10 to 20 kt increasing to
30 kt. slight chance of showers through early evening. waves 2 to
4 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday...south winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday night...southeast winds to 30 kt diminishing to 10 to
20 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 2 to 4 ft. 
.sunday night...south winds 10 to 15 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 3 to 5 ft. 
.monday night...southwest winds 10 to 20 kt becoming northwest
15 to 25 kt. chance of showers and thunderstorms. waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
6 to 9 ft occasionally to 12 ft. 
.wednesday...northeast winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 100203
glflm 
expires:202610100930;;827269

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt fri oct 9 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 30.2 inches will continue to push east
overnight, while low pressure around 29.2 inches develops over the
northern plains. southeast winds will shift south overnight.

expect winds to increase for saturday, as lake michigan sits
between the two systems, and has the potential to produce 
southerly gusts up to 30 knots through early sunday morning. a 
few gale force gusts are possible across the northern portions of
the lake saturday afternoon and evening. no gale headlines are
expected at this time.

the main low pressure system weakens to around 29.6 inches 
sunday, as it lifts from ontario into the james bay region. this 
will drag a cold front across the upper great lakes later sunday 
into monday, as south to southwest winds shift north later monday
into tuesday. could see a few gale force gusts monday night into 
tuesday behind the cold frontal passage. winds should gradually 
ease through the middle of the week, as another high pressure 
system around 30.2 inches builds across the upper great lakes 
region.


lmz261-362-364-366-563-565-567-868-100930-
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-
903 pm cdt fri oct 9 2026

sheboygan wi to pentwater mi north...

.rest of tonight...east winds 10 to 15 kt becoming southeast to
30 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.saturday...southeast winds to 30 kt becoming south. waves 4 to
7 ft occasionally to 9 ft building to 7 to 10 ft occasionally to
13 ft. 
.saturday night...south winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.sunday...south winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest. waves
2 to 4 ft. 
.monday...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.monday night...northwest winds 15 to 25 kt becoming north.
showers likely. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft. 
.wednesday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827216

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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...

lake superior is currently between a 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz264-100800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt fri oct 9 2026

.rest of tonight...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves 2 to 4 feet building to 4 to
7 feet occasionally to 9 feet. 
.saturday...southeast winds to 30 knots with a few gale force
gusts to 40 knots possible becoming south 20 to 30 knots late.
waves building to 5 to 9 feet occasionally to 11 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
after midnight, then diminishing to 15 to 25 knots late. waves
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 1 to 3 feet. 
.sunday night...northeast winds 10 to 20 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
subsiding to calm to 2 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.monday...northeast gales to 35 knots. a chance of showers
through early afternoon, then showers likely 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. 
.monday night...northeast winds 15 to 25 knots. a chance of
showers. waves subsiding to 2 to 4 feet. 
.tuesday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots becoming southeast
10 to 20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827217

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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...

lake superior is currently between a 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz265-100800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt fri oct 9 2026

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

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827218

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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...

lake superior is currently between a 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz266-100800-
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 fri oct 9 2026

.rest of tonight...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves 1 to 3 feet building to 4 to
7 feet occasionally to 9 feet. 
.saturday...southeast winds to 30 knots with a few gale force
gusts to 35 knots possible veering south in the afternoon. waves
building to 6 to 9 feet occasionally to 11 feet. 
.saturday night...south winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots late.
waves subsiding to 4 to 7 feet occasionally to 9 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 becoming southwest
20 to 30 knots after midnight. a chance of showers after
midnight. waves subsiding to 1 to 3 feet, then building to 3 to
6 feet occasionally to 8 feet. 
.monday...northeast winds 20 to 30 knots. a chance of showers.
waves building to 5 to 8 feet occasionally to 10 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.wednesday...north winds 10 to 20 knots becoming southeast 15 to
25 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827219

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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...

lake superior is currently between a 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz267-100800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt fri oct 9 2026

.rest of tonight...southeast winds 10 to 20 knots increasing to
20 to 30 knots late. waves calm to 2 feet building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southeast winds to 30 knots with a few gale force
gusts to 40 knots possible becoming south to 30 knots with a few
gale force gusts to 35 knots possible late. 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. waves 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 1 to 3 feet. 
.sunday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers after
midnight. waves 1 to 3 feet. 
.monday...northeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. a chance of showers. waves building to
5 to 8 feet occasionally to 10 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a chance of showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.wednesday...north winds 10 to 20 knots veering southeast. waves
building to 1 to 3 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827214

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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...

lake superior is currently between a 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt fri oct 9 2026 /900 pm cdt fri oct 9 2026/

.rest of tonight...east winds 15 to 25 knots veering southeast
after midnight, then diminishing to 10 to 20 knots late. waves
3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.saturday...southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then becoming south 20 to 30 knots
late. waves subsiding to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
after midnight, then diminishing to 15 to 25 knots late. waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 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...northeast winds 10 to 20 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.monday...northeast gales to 35 knots. a chance of showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. showers likely through midnight.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots. waves subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827215

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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...

lake superior is currently between a 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz263-100800-
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 fri oct 9 2026

.rest of tonight...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves 3 to 6 feet occasionally to
8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...southeast winds 15 to 25 knots veering south in the
afternoon, then increasing to 20 to 30 knots late. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
late. waves building 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 calm to 2 feet. 
.sunday night...northeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.monday...northeast gales to 35 knots. a chance of showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a chance of rain showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...north winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 

$$