fzus61 kbuf 082255
glflo 
expires:202604090300;;052423

open lake forecast for lake ontario
national weather service buffalo ny
655 pm edt wed apr 8 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.6 inch high will move off the coast of new england 
tonight and southeast of nova scotia thursday. a 29.5 inch low will 
move from the north shore of lake superior tonight to northern 
quebec by thursday night, with a trailing cold front crossing the 
lake thursday night and friday. a 30.5 inch high is then forecast to 
build into the central great lakes saturday, then drift east to new 
england by sunday. the cold front from a 29.4 inch low near james 
bay will track across the lake monday into tuesday.


loz063>065-090300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
655 pm edt wed apr 8 2026

.tonight...east winds 15 to 25 knots becoming south. waves 1 to
3 feet building to 3 to 5 feet. 
.thursday...south winds 15 to 25 knots. a chance of rain showers
late. waves 3 to 6 feet. 
.thursday night...south winds 15 to 25 knots becoming southwest
and diminishing to 5 to 10 knots overnight. a chance of rain
showers in the evening. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.friday...west winds 10 knots or less becoming north. rain
showers. waves 2 feet or less. 
.friday night...northwest winds 10 knots or less. rain showers in
the evening, then a chance of rain showers overnight. waves
2 feet or less. 
.saturday...northwest winds 10 knots or less becoming south.
waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 25 knots. a chance of rain showers sunday
night. waves 1 foot or less building to 3 to 6 feet. 
.monday...south winds 15 to 25 knots becoming southwest. a chance
of showers. waves 3 to 6 feet. 

$$

fzus61 kbuf 082255
glflo 
expires:202604090300;;052422

open lake forecast for lake ontario
national weather service buffalo ny
655 pm edt wed apr 8 2026

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.6 inch high will move off the coast of new england 
tonight and southeast of nova scotia thursday. a 29.5 inch low will 
move from the north shore of lake superior tonight to northern 
quebec by thursday night, with a trailing cold front crossing the 
lake thursday night and friday. a 30.5 inch high is then forecast to 
build into the central great lakes saturday, then drift east to new 
england by sunday. the cold front from a 29.4 inch low near james 
bay will track across the lake monday into tuesday.


loz062-090300-
lake ontario open waters from the niagara river to hamlin beach-
655 pm edt wed apr 8 2026

.tonight...east winds 15 to 20 knots becoming south. waves 2 to
4 feet. 
.thursday...south winds 15 to 25 knots becoming southwest. a
chance of showers late. waves 2 to 4 feet building to 3 to
6 feet. 
.thursday night...southwest winds 15 to 20 knots becoming
northwest 5 to 15 knots. a chance of rain showers. waves 3 to
6 feet subsiding to 1 to 3 feet. 
.friday...north winds less than 10 knots. rain showers. waves
1 foot or less. 
.friday night...northwest winds 10 knots or less. rain showers
likely in the evening. waves 1 foot or less. 
.saturday...northwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.sunday...east winds 5 to 15 knots becoming southwest 15 to
20 knots. a chance of rain showers sunday night. waves 2 feet or
less building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots increasing to 30 knots.
a chance of showers. waves 3 to 6 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 

$$

fzus61 kcle 081940
glfle 
expires:202604090215;;045561

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt wed apr 8 2026

for waters beyond five nautical miles of shore on lake erie

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...
pressure averaging 30.40 inches will gradually fall as high
pressure moves east away from lake erie tonight and a frontal 
boundary moves in late tomorrow. this front will stall in the 
vicinity of the lake thursday evening. it will push across as a 
cold front on friday. high pressure 30.50 inches will build over 
the great lakes on saturday.


lez061-167>169-090215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
340 pm edt wed apr 8 2026

.tonight...southeast winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers with a slight chance of
thunderstorms late. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday night...southwest winds 5 to 15 knots becoming east
less than 10 knots. a chance of rain showers. waves 1 to 3 feet. 
.friday...east winds 5 to 10 knots becoming northwest. rain
showers. waves around 1 foot. 
.friday night...northwest winds 10 knots or less becoming north.
rain showers in the evening. waves 1 foot or less. 
.saturday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.sunday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. waves 2 feet or less building to
3 to 5 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081940
glfle 
expires:202604090215;;045559

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt wed apr 8 2026

for waters beyond five nautical miles of shore on lake erie

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...
pressure averaging 30.40 inches will gradually fall as high
pressure moves east away from lake erie tonight and a frontal 
boundary moves in late tomorrow. this front will stall in the 
vicinity of the lake thursday evening. it will push across as a 
cold front on friday. high pressure 30.50 inches will build over 
the great lakes on saturday.


lez162-163-090215-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
340 pm edt wed apr 8 2026

.tonight...southeast winds 10 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers with a slight chance of
thunderstorms in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet. 
.thursday night...west winds 5 to 15 knots becoming east. a
chance of showers overnight. waves 2 feet or less. 
.friday...southeast winds 5 to 10 knots becoming northwest.
showers. waves 1 foot or less. 
.friday night...north winds 5 to 10 knots becoming northeast.
showers likely in the evening. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. waves 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers.
waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081940
glfle 
expires:202604090215;;045560

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt wed apr 8 2026

for waters beyond five nautical miles of shore on lake erie

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...
pressure averaging 30.40 inches will gradually fall as high
pressure moves east away from lake erie tonight and a frontal 
boundary moves in late tomorrow. this front will stall in the 
vicinity of the lake thursday evening. it will push across as a 
cold front on friday. high pressure 30.50 inches will build over 
the great lakes on saturday.


lez164>166-090215-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
340 pm edt wed apr 8 2026

.tonight...southeast winds 10 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers with a slight chance of
thunderstorms late. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday night...southwest winds 5 to 15 knots becoming
southeast. a chance of showers. waves 1 to 3 feet subsiding to
1 foot or less. 
.friday...southeast winds 5 to 10 knots becoming northwest.
showers. waves around 1 foot. 
.friday night...north winds 5 to 10 knots becoming northeast.
rain showers in the evening. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less becoming east. waves
1 foot or less. 
.sunday...southeast winds around 10 knots becoming south and
increasing to 15 to 20 knots. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 081959
glflh 
expires:202604090400;;045952

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 pm edt wed apr 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...increasing southerly winds tonight as low pressure,
29.70 inches, tracks through lake superior and ontario. brief
gusts to gales possible over northern lake huron. showers move in
tonight into thursday as the associated cold front swings
through. additional opportunities for showers and perhaps a
thunderstorm thursday night and friday, with some light snowfall
more likely for the north/central huron basin. high pressure then
builds out of the upper midwest to start the weekend, but active
weather will be possible again sunday through tuesday.


lhz462>464-090400-
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-
359 pm edt wed apr 8 2026

.tonight...south winds 15 to 20 knots with gusts to around
30 knots. waves 5 to 7 feet. waves occasionally around 10 feet. 
.thursday...south winds 15 to 20 knots with gusts to around
30 knots becoming southwest 10 to 15 knots late in the afternoon.
a chance of rain in the morning. waves 4 to 6 feet. 
.thursday night...west winds 10 to 15 knots becoming northeast
after midnight. rain and snow likely after midnight. waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight. waves occasionally around 8 feet. 
.friday...northeast winds 5 to 10 knots. rain and snow likely in
the morning. waves 2 feet or less. 
.friday night...north winds 5 to 10 knots backing to the
northwest after midnight. waves 2 feet or less. 
.saturday...northwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming northeast 5 to 10 knots late
in the afternoon veering to the southeast. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming south 20 to
25 knots with gusts to around 30 knots. a chance of rain. waves
3 to 5 feet building to 5 to 7 feet by midnight. waves
occasionally around 10 feet. 
.monday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots . a chance of rain.
rain likely by midnight. waves 5 to 7 feet. waves occasionally
around 10 feet. 


$$

fzus63 kdtx 081959
glfsc 
expires:202604090400;;045954

lake st clair forecast
national weather service detroit/pontiac mi
359 pm edt wed apr 8 2026

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...increasing southerly winds tonight as low pressure,
29.70 inches, tracks through lake superior and ontario. brief
gusts to gales possible over northern lake huron. showers move in
tonight into thursday as the associated cold front swings
through. additional opportunities for showers and perhaps a
thunderstorm thursday night and friday, with some light snowfall
more likely for the north/central huron basin. high pressure then
builds out of the upper midwest to start the weekend, but active
weather will be possible again sunday through tuesday.


lcz460-090400-
lake st clair-
359 pm edt wed apr 8 2026

.tonight...south winds 10 to 15 knots increasing to 15 to 20 knots
early in the morning. partly cloudy. waves 1 to 3 feet.
.thursday...southwest winds 15 to 20 knots. partly sunny. a chance
of light rain early in the afternoon. waves 1 to 3 feet.
.thursday night...southwest winds 10 to 15 knots becoming north 5 to
10 knots in the late evening and overnight. partly cloudy .. then
mostly cloudy with rain likely after midnight. waves 2 feet or less.
.friday...north winds 5 to 10 knots. rain until late afternoon...
then a chance of light rain early in the afternoon. waves 2 feet or
less.
.friday night...north winds 5 to 10 knots. mostly cloudy early in
the evening becoming partly cloudy. a chance of light rain early in
the evening. waves 2 feet or less.
.saturday...northeast winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots in the
evening. partly cloudy in the morning then clearing. waves 2 feet or
less.
.sunday...south winds 15 to 20 knots. mostly cloudy with a chance of
light rain. waves 2 feet or less.
.monday...southwest winds 20 to 25 knots with gusts to 30 knots.
mostly cloudy with a chance of light rain. waves 2 to 4 feet. a
small craft advisory may be needed.

$$

fzus63 kdtx 081959
glflh 
expires:202604090400;;045951

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 pm edt wed apr 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...increasing southerly winds tonight as low pressure,
29.70 inches, tracks through lake superior and ontario. brief
gusts to gales possible over northern lake huron. showers move in
tonight into thursday as the associated cold front swings
through. additional opportunities for showers and perhaps a
thunderstorm thursday night and friday, with some light snowfall
more likely for the north/central huron basin. high pressure then
builds out of the upper midwest to start the weekend, but active
weather will be possible again sunday through tuesday.


lhz362-363-090400-
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-
359 pm edt wed apr 8 2026

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


$$

fzus63 kdtx 081959
glflh 
expires:202604090400;;045950

open lake forecast for lake huron
national weather service detroit/pontiac mi
359 pm edt wed apr 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...increasing southerly winds tonight as low pressure,
29.70 inches, tracks through lake superior and ontario. brief
gusts to gales possible over northern lake huron. showers move in
tonight into thursday as the associated cold front swings
through. additional opportunities for showers and perhaps a
thunderstorm thursday night and friday, with some light snowfall
more likely for the north/central huron basin. high pressure then
builds out of the upper midwest to start the weekend, but active
weather will be possible again sunday through tuesday.


lhz361-090400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
359 pm edt wed apr 8 2026

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


$$

fzus63 kmkx 082018
glflm 
expires:202604090345;;047467

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
318 pm cdt wed apr 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...

low pressure around 29.6 inches tracking along the northern great
plains and canadian border will track north of lake superior 
tonight into thursday morning. this will result in continued gales
into tonight across the northern 3/4 of the lake. 

much lighter westerly winds are then expected thursday in the 
wake of a cold front. light and variable winds will prevail friday 
into saturday, until breezy southerly winds return late in the 
weekend.


lmz080-777-779-878-090345-
lake michigan from michigan city in to st. joseph mi 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 st. joseph to south haven mi 5 nm offshore to
mid lake-
318 pm cdt wed apr 8 2026

winthrop harbor il to south haven mi south...

.tonight...south winds to 30 kt becoming southwest. chance of
showers and slight chance of thunderstorms overnight. waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft. 
.thursday...southwest winds 10 to 20 kt diminishing to 10 to
15 kt late in the morning, then diminishing to 5 to 10 kt early
in the afternoon backing to southeast late. chance of rain
showers in the morning. waves 4 to 6 ft occasionally to 8 ft
subsiding to 1 to 3 ft. 
.thursday night...northeast winds 5 to 10 kt increasing to 10 to
15 kt. chance of rain showers in the evening, then rain showers
overnight. waves 1 to 2 ft. 
.friday...northeast winds 10 to 15 kt becoming north. rain
showers in the morning, then chance of rain showers in the
afternoon. waves 1 to 2 ft. 
.friday night...northeast winds 5 to 10 kt. waves 1 to 2 ft.
.saturday...east winds 5 to 10 kt becoming northeast. waves 1 ft
or less. 
.saturday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. chance of rain showers and thunderstorms. waves 1 to 2 ft
building to 2 to 4 ft. 
.sunday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers. waves 3 to 5 ft. 
.monday...southwest winds to 30 kt. chance of showers. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.  

$$

fzus63 kmkx 082018
glflm 
expires:202604090345;;047465

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
318 pm cdt wed apr 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...

low pressure around 29.6 inches tracking along the northern great
plains and canadian border will track north of lake superior 
tonight into thursday morning. this will result in continued gales
into tonight across the northern 3/4 of the lake. 

much lighter westerly winds are then expected thursday in the 
wake of a cold front. light and variable winds will prevail friday 
into saturday, until breezy southerly winds return late in the 
weekend.


lmz261-362-364-366-563-565-567-868-090345-
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-
318 pm cdt wed apr 8 2026

sheboygan wi to pentwater mi north...

...gale warning in effect through late tonight...

.tonight...south gales to 40 kt becoming southwest gales to 35 kt
after midnight, then diminishing to 15 to 25 kt late. rain
showers. waves 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft. 
.thursday...southwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft. 
.thursday night...west winds 10 to 15 kt veering to east. chance
of rain showers. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.friday...north winds 5 to 10 kt becoming northwest. waves 1 ft
or less. 
.friday night...northeast winds 5 to 10 kt veering to south.
waves 1 ft or less. 
.saturday...south winds 5 to 10 kt. waves 1 to 2 ft. 
.saturday night...southeast winds 10 to 15 kt increasing to 15 to
25 kt. rain showers likely. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.sunday...south winds to 30 kt. rain showers likely with a chance
of thunderstorms. waves 6 to 9 ft occasionally to 12 ft building
to 7 to 10 ft occasionally to 13 ft. 
.monday...southwest gales to 35 kt diminishing to 30 kt. chance
of showers. waves 8 to 12 ft occasionally to 16 ft subsiding to
8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 082018
glflm 
expires:202604090345;;047466

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
318 pm cdt wed apr 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...

low pressure around 29.6 inches tracking along the northern great
plains and canadian border will track north of lake superior 
tonight into thursday morning. this will result in continued gales
into tonight across the northern 3/4 of the lake. 

much lighter westerly winds are then expected thursday in the 
wake of a cold front. light and variable winds will prevail friday 
into saturday, until breezy southerly winds return late in the 
weekend.


lmz669-671-673-675-870-872-874-876-090345-
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-
318 pm cdt wed apr 8 2026

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

...gale warning in effect through late tonight...

.tonight...south gales to 35 kt becoming southwest to 30 kt. rain
showers likely overnight. waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.thursday...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain showers in the morning. waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft. 
.thursday night...east winds less than 10 kt increasing to 5 to
10 kt late in the evening, then increasing to 10 to 15 kt after
midnight becoming northeast late. chance of rain showers in the
evening, then rain showers overnight. waves 1 to 2 ft. 
.friday...north winds 5 to 10 kt increasing to 10 to 15 kt.
chance of rain showers in the morning. waves 1 to 2 ft. 
.friday night...northeast winds 5 to 10 kt. waves 1 to 2 ft.
.saturday...east winds 5 to 10 kt becoming southeast. waves 1 to
2 ft. 
.saturday night...southeast winds 10 to 20 kt increasing to 15 to
25 kt. chance of rain showers and thunderstorms. waves 1 to 3 ft
building to 4 to 7 ft occasionally to 9 ft. 
.sunday...south winds to 30 kt. chance of rain showers. waves
6 to 9 ft occasionally to 12 ft building to 7 to 10 ft
occasionally to 13 ft. 
.monday...southwest winds to 30 kt becoming south. chance of
showers. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 082001
glfls 
expires:202604090800;;046084

open lake forecast for lake superior
national weather service marquette mi
400 pm edt wed apr 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...

a 29.7 inch low moves through lake winnipeg this evening before 
continuing to just north of lake superior tonight. the low 
eventually reaches james bay by thursday morning as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure lifts through the northern plains 
while the 30.5 inch high pushes off of the eastern seaboard into the 
atlantic. this low pushes east through the upper great lakes sunday 
night before continuing into northern quebec monday.



lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt wed apr 8 2026 /300 pm cdt wed apr 8 2026/

.late this afternoon...northeast winds 5 to 15 knots. rain
showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 20 to
30 knots after midnight, then veering west late. a slight chance
of rain showers through midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots veering northwest
late. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 10 to 20 knots. a chance of rain
showers through midnight. a chance of thunderstorms. rain showers
after midnight. waves building to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots becoming southwest 15 to
25 knots. rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.monday...west winds 15 to 25 knots becoming northeast gales to
35 knots. a chance of rain showers, then rain showers, possibly
mixed with snow. waves subsiding to 2 to 4 feet, then building to
9 to 12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 082001
glfls 
expires:202604090800;;046085

open lake forecast for lake superior
national weather service marquette mi
400 pm edt wed apr 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...

a 29.7 inch low moves through lake winnipeg this evening before 
continuing to just north of lake superior tonight. the low 
eventually reaches james bay by thursday morning as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure lifts through the northern plains 
while the 30.5 inch high pushes off of the eastern seaboard into the 
atlantic. this low pushes east through the upper great lakes sunday 
night before continuing into northern quebec monday.



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-
400 pm edt wed apr 8 2026

.late this afternoon...southeast winds 20 to 30 knots. rain
showers. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible after midnight,
then veering west late. a chance of rain showers through
midnight. waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.thursday...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.thursday night...west winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a chance of rain showers through
midnight, then rain showers after midnight. waves building to
3 to 5 feet occasionally to 7 feet. 
.sunday...southeast winds 15 to 25 knots becoming southwest 20 to
30 knots. rain showers and a chance of thunderstorms. waves
subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.monday...west winds 20 to 30 knots becoming northeast gales to
35 knots. a chance of rain showers, then rain showers, possibly
mixed with snow. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 10 to 14 feet occasionally to 18 feet. 

$$

fzus63 kmqt 082001
glfls 
expires:202604090800;;046087

open lake forecast for lake superior
national weather service marquette mi
400 pm edt wed apr 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...

a 29.7 inch low moves through lake winnipeg this evening before 
continuing to just north of lake superior tonight. the low 
eventually reaches james bay by thursday morning as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure lifts through the northern plains 
while the 30.5 inch high pushes off of the eastern seaboard into the 
atlantic. this low pushes east through the upper great lakes sunday 
night before continuing into northern quebec monday.



lsz265-090800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt wed apr 8 2026

.late this afternoon...southeast winds 20 to 30 knots. a chance
of rain showers. waves 6 to 9 feet occasionally to 11 feet. 
.tonight...south winds to 30 knots with a few gale force gusts to
35 knots possible becoming southwest 15 to 25 knots after
midnight, then becoming west 20 to 30 knots late. rain showers
through midnight. waves subsiding to 2 to 4 feet, then building
to 3 to 5 feet occasionally to 7 feet. 
.thursday...west winds 20 to 30 knots 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. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 10 to 20 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming southeast
10 to 20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. rain showers likely after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.sunday...southeast winds 20 to 30 knots veering south. rain
showers. a chance of thunderstorms. a chance of rain showers.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday...west winds 20 to 30 knots veering northeast. a chance
of rain showers, then rain showers, possibly mixed with snow.
waves subsiding to 2 to 4 feet, then building to 10 to 14 feet
occasionally to 18 feet. 

$$

fzus63 kmqt 082001
glfls 
expires:202604090800;;046086

open lake forecast for lake superior
national weather service marquette mi
400 pm edt wed apr 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...

a 29.7 inch low moves through lake winnipeg this evening before 
continuing to just north of lake superior tonight. the low 
eventually reaches james bay by thursday morning as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure lifts through the northern plains 
while the 30.5 inch high pushes off of the eastern seaboard into the 
atlantic. this low pushes east through the upper great lakes sunday 
night before continuing into northern quebec monday.



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

...gale warning in effect from 4 am edt thursday through thursday
morning...

.late this afternoon...southeast gales to 35 knots. rain showers.
waves 7 to 10 feet occasionally to 13 feet. 
.tonight...southwest gales to 35 knots diminishing to 15 to
25 knots after midnight, then becoming west gales to 35 knots
late. a chance of rain showers through midnight. waves subsiding
to 4 to 7 feet occasionally to 9 feet, then building to 6 to
9 feet occasionally to 11 feet. 
.thursday...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.thursday night...west winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots becoming southeast
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 15 to 25 knots. rain showers
likely after midnight. waves building to 4 to 7 feet occasionally
to 9 feet. 
.sunday...southeast winds 20 to 30 knots veering south. rain
showers. a chance of thunderstorms. a chance of rain showers.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday...west winds 20 to 30 knots becoming northeast gales to
35 knots. a chance of rain showers. a chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 082001
glfls 
expires:202604090800;;046088

open lake forecast for lake superior
national weather service marquette mi
400 pm edt wed apr 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...

a 29.7 inch low moves through lake winnipeg this evening before 
continuing to just north of lake superior tonight. the low 
eventually reaches james bay by thursday morning as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure lifts through the northern plains 
while the 30.5 inch high pushes off of the eastern seaboard into the 
atlantic. this low pushes east through the upper great lakes sunday 
night before continuing into northern quebec monday.



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-
400 pm edt wed apr 8 2026

...gale warning in effect until 10 pm edt this evening...

.late this afternoon...south gales to 35 knots. a chance of rain
showers. waves 7 to 11 feet occasionally to 13 feet. 
.tonight...south gales to 35 knots becoming southwest 15 to
25 knots after midnight, then increasing to gales to 35 knots
late. rain showers and a slight chance of thunderstorms through
midnight. waves subsiding to 4 to 8 feet occasionally to 10 feet.
.thursday...west gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing southeast by
mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 15 to 25 knots increasing to
gales to 35 knots after midnight. rain showers likely, possibly
mixed with snow showers after midnight. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday...southeast winds 20 to 30 knots becoming south gales to
35 knots. rain showers and a chance of thunderstorms. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.monday...west winds 20 to 30 knots becoming northeast gales to
35 knots. a chance of rain showers, then rain showers, possibly
mixed with snow. waves subsiding to 4 to 7 feet occasionally to
9 feet, then building to 10 to 14 feet occasionally to 18 feet. 

$$

fzus63 kmqt 082001
glfls 
expires:202604090800;;046089

open lake forecast for lake superior
national weather service marquette mi
400 pm edt wed apr 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...

a 29.7 inch low moves through lake winnipeg this evening before 
continuing to just north of lake superior tonight. the low 
eventually reaches james bay by thursday morning as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure lifts through the northern plains 
while the 30.5 inch high pushes off of the eastern seaboard into the 
atlantic. this low pushes east through the upper great lakes sunday 
night before continuing into northern quebec monday.



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

.late this afternoon...southeast winds to 30 knots with a few
gale force gusts to 35 knots possible. a chance of rain showers.
waves 5 to 8 feet occasionally to 10 feet. 
.tonight...southeast winds to 30 knots with a few gale force
gusts to 35 knots possible veering southwest after midnight, then
diminishing to 15 to 25 knots late. rain showers through
midnight, then a slight chance of rain showers after midnight.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...west winds 20 to 30 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible in the afternoon,
then diminishing to 20 to 30 knots late. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight, then backing west late. waves
subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing southeast by
mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a chance of rain showers, possibly
mixed with snow after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday...southeast winds 20 to 30 knots becoming south gales to
35 knots. rain showers and a chance of thunderstorms. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.monday...southwest winds 20 to 30 knots becoming east gales to
35 knots. a chance of rain showers, then rain showers, possibly
mixed with snow. waves subsiding to 4 to 7 feet occasionally to
9 feet, then building to 8 to 11 feet occasionally to 14 feet. 

$$