fzus61 kbuf 092010
glflo 
expires:202604100300;;099270

open lake forecast for lake ontario
national weather service buffalo ny
409 pm edt thu apr 9 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 29.5 inch low will move east of james bay tonight and 
across northern quebec, with a trailing cold front crossing the lake 
tonight through tomorrow. a 30.5 inch high is then forecast to build 
into the central great lakes region saturday, then drift east to new 
england by sunday. a cold front from a 29.4 inch low near james bay 
will cross the lake monday, and then stall south of the lake before 
slowly lifting northward later tuesday as a warm front.


loz062-100300-
lake ontario open waters from the niagara river to hamlin beach-
409 pm edt thu apr 9 2026

.tonight...southwest winds 15 to 20 knots becoming north 5 to
15 knots. a chance of rain showers late. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.friday...northeast winds 5 to 10 knots becoming northwest. a
chance of rain showers early, then rain showers from late morning
on. waves around 1 foot. 
.friday night...northwest winds 5 to 15 knots. a chance of rain
showers in the evening. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.saturday night...southwest winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.sunday...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots. a chance of rain showers. waves
1 foot or less building to 4 to 7 feet. waves occasionally around
9 feet. 
.monday...southwest winds to 30 knots diminishing to 15 to
20 knots. a chance of showers. waves 5 to 8 feet subsiding to
3 to 5 feet. waves occasionally around 10 feet. 
.tuesday...southwest winds 15 to 20 knots. a chance of showers
during the day, then showers likely tuesday night. waves 2 to
4 feet. 

$$

fzus61 kbuf 092010
glflo 
expires:202604100300;;099271

open lake forecast for lake ontario
national weather service buffalo ny
409 pm edt thu apr 9 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 29.5 inch low will move east of james bay tonight and 
across northern quebec, with a trailing cold front crossing the lake 
tonight through tomorrow. a 30.5 inch high is then forecast to build 
into the central great lakes region saturday, then drift east to new 
england by sunday. a cold front from a 29.4 inch low near james bay 
will cross the lake monday, and then stall south of the lake before 
slowly lifting northward later tuesday as a warm front.


loz063>065-100300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 pm edt thu apr 9 2026

.tonight...south winds 15 to 20 knots becoming west 5 to
15 knots. rain showers likely early. waves 3 to 5 feet subsiding
to 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots. rain showers likely
early, then a chance of rain showers late in the morning. rain
showers in the afternoon. waves 1 to 2 feet. 
.friday night...northwest winds 5 to 15 knots. a chance of rain
showers. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west. waves
1 to 3 feet. 
.saturday night...west winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 5 to 15 knots becoming south and
increasing to 30 knots. a chance of rain showers. waves 2 feet or
less building to 5 to 8 feet. waves occasionally around 10 feet. 
.monday...southwest winds 15 to 25 knots. showers likely. waves
5 to 8 feet subsiding to 3 to 5 feet. waves occasionally around
10 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. a chance of showers during the day, then showers likely
tuesday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 091940
glfle 
expires:202604100215;;098062

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt thu apr 9 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...
a cold front will drop southward towards lake erie this evening
and tonight with a wave of low pressure 30.00 inches friday, and
then finally passing south late friday into friday night. high
pressure 30.60 inches builds over the lake saturday, then exits
east saturday night. a warm front pushes northeastward across the
lake sunday night and will become stationary north of lake erie
through midweek.



lez162-163-100215-
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 thu apr 9 2026

.tonight...west winds 5 to 10 knots becoming south. showers
likely with a chance of thunderstorms this evening, then a chance
of showers and thunderstorms after midnight. waves 2 feet or
less. 
.friday...southwest winds 10 to 15 knots becoming north. a chance
of showers early, then showers. a chance of showers late. waves
2 feet or less. 
.friday night...north winds 5 to 10 knots becoming northeast.
waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday night...east 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. a chance of showers sunday night.
waves 1 to 3 feet building to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots becoming south. a
chance of showers during the day, then showers likely with a
chance of thunderstorms tuesday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 091940
glfle 
expires:202604100215;;098063

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt thu apr 9 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...
a cold front will drop southward towards lake erie this evening
and tonight with a wave of low pressure 30.00 inches friday, and
then finally passing south late friday into friday night. high
pressure 30.60 inches builds over the lake saturday, then exits
east saturday night. a warm front pushes northeastward across the
lake sunday night and will become stationary north of lake erie
through midweek.



lez164>167-100215-
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-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
340 pm edt thu apr 9 2026

.tonight...southwest winds 5 to 10 knots becoming south. a chance
of showers with a slight chance of thunderstorms through the
early overnight, then a slight chance of showers late. waves 1 to
3 feet. 
.friday...south winds 10 to 15 knots becoming northwest. a slight
chance of showers early, then showers from late morning on. waves
1 to 3 feet. 
.friday night...northwest winds 5 to 10 knots becoming north. a
chance of rain showers in the evening. waves 1 to 2 feet. 
.saturday...north winds 5 to 10 knots becoming east. waves 1 foot
or less. 
.saturday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.sunday...southeast winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. waves 1 to 3 feet building to 3 to
6 feet. 
.monday...southwest winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet subsiding to 3 to 5 feet. waves occasionally
around 9 feet. 
.tuesday...southwest winds 15 to 20 knots. a chance of showers
during the day, then showers likely with a chance of
thunderstorms tuesday night. waves 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 091940
glfle 
expires:202604100215;;098064

open lake forecast for lake erie
national weather service cleveland oh
340 pm edt thu apr 9 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...
a cold front will drop southward towards lake erie this evening
and tonight with a wave of low pressure 30.00 inches friday, and
then finally passing south late friday into friday night. high
pressure 30.60 inches builds over the lake saturday, then exits
east saturday night. a warm front pushes northeastward across the
lake sunday night and will become stationary north of lake erie
through midweek.



lez061-168-169-100215-
ripley to buffalo ny extending from 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 thu apr 9 2026

.tonight...south winds 5 to 10 knots. a chance of showers with a
slight chance of thunderstorms through the early overnight, then
a chance of showers late. waves 1 to 3 feet. 
.friday...southeast winds 5 to 10 knots becoming west. a slight
chance of rain showers early, then a chance of rain showers late
in the morning. rain showers in the afternoon. waves 1 to 2 feet.
.friday night...north winds 10 knots or less. waves 1 to 2 feet. 
.saturday...north winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...light and variable winds. waves 1 foot or less.
.sunday...southeast winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. waves 1 to 3 feet building to 3 to
5 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 3 to 6 feet subsiding to
2 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms during the day, then showers likely tuesday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 091950
glfsc 
expires:202604100400;;098275

lake st clair forecast
national weather service detroit/pontiac mi
350 pm edt thu apr 9 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...surface low pressure exits into james bay while its
cold front stalls over the southern great lakes. briefly dry
conditions give way to additional opportunities for showers and
perhaps a couple thunderstorms tonight and friday as an upper
level disturbance from the high plains moves into the great
lakes. some light snowfall is possible for the north/central
huron basin. high pressure then builds out of the upper midwest
to start the weekend with drier and calmer conditions. active
weather will be possible again sunday through tuesday due to
several passing disturbances.


lcz460-100400-
lake st clair-
350 pm edt thu apr 9 2026

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

$$

fzus63 kdtx 091949
glflh 
expires:202604100400;;098272

open lake forecast for lake huron
national weather service detroit/pontiac mi
349 pm edt thu apr 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...surface low pressure exits into james bay while its
cold front stalls over the southern great lakes. briefly dry
conditions give way to additional opportunities for showers and
perhaps a couple thunderstorms tonight and friday as an upper
level disturbance from the high plains moves into the great
lakes. some light snowfall is possible for the north/central
huron basin. high pressure then builds out of the upper midwest
to start the weekend with drier and calmer conditions. active
weather will be possible again sunday through tuesday due to
several passing disturbances.


lhz462>464-100400-
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-
349 pm edt thu apr 9 2026

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


$$

fzus63 kdtx 091949
glflh 
expires:202604100400;;098271

open lake forecast for lake huron
national weather service detroit/pontiac mi
349 pm edt thu apr 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...surface low pressure exits into james bay while its
cold front stalls over the southern great lakes. briefly dry
conditions give way to additional opportunities for showers and
perhaps a couple thunderstorms tonight and friday as an upper
level disturbance from the high plains moves into the great
lakes. some light snowfall is possible for the north/central
huron basin. high pressure then builds out of the upper midwest
to start the weekend with drier and calmer conditions. active
weather will be possible again sunday through tuesday due to
several passing disturbances.


lhz362-363-100400-
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-
349 pm edt thu apr 9 2026

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


$$

fzus63 kdtx 091949
glflh 
expires:202604100400;;098270

open lake forecast for lake huron
national weather service detroit/pontiac mi
349 pm edt thu apr 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...surface low pressure exits into james bay while its
cold front stalls over the southern great lakes. briefly dry
conditions give way to additional opportunities for showers and
perhaps a couple thunderstorms tonight and friday as an upper
level disturbance from the high plains moves into the great
lakes. some light snowfall is possible for the north/central
huron basin. high pressure then builds out of the upper midwest
to start the weekend with drier and calmer conditions. active
weather will be possible again sunday through tuesday due to
several passing disturbances.


lhz361-100400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
349 pm edt thu apr 9 2026

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


$$

fzus63 kmkx 091930
glflm 
expires:202604100300;;097598

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

low pressure around 29.6 inches has pushed east of st james bay
this afternoon with high pressure of 30. inches building in over
the lake. rain and perhaps a few rumbles of thunder possible
over the south half of the lake tonight as a warm front lifts
into the southern half of the lake with a weak low pressure
region developing south of the lake. winds will remain more
northerly across the lake but fairly light. high pressure will
push this system back south and build in over the eastern great
lakes region to around 30.4 inches. overall light and variable
winds will continue through much of saturday before breezy
southerly winds return late weekend through as late as mid next
week.

southerly gales are possible over the north half sunday into 
monday morning with periods early to mid next week featuring
chances for storms, possibly some storms being strong.


lmz080-669-671-673-675-777-779-870-872-874-876-878-100300-
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-
230 pm cdt thu apr 9 2026

sheboygan wi to pentwater mi south...

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

$$

fzus63 kmkx 091930
glflm 
expires:202604100300;;097597

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

low pressure around 29.6 inches has pushed east of st james bay
this afternoon with high pressure of 30. inches building in over
the lake. rain and perhaps a few rumbles of thunder possible
over the south half of the lake tonight as a warm front lifts
into the southern half of the lake with a weak low pressure
region developing south of the lake. winds will remain more
northerly across the lake but fairly light. high pressure will
push this system back south and build in over the eastern great
lakes region to around 30.4 inches. overall light and variable
winds will continue through much of saturday before breezy
southerly winds return late weekend through as late as mid next
week.

southerly gales are possible over the north half sunday into 
monday morning with periods early to mid next week featuring
chances for storms, possibly some storms being strong.


lmz261-362-364-366-563-565-567-868-100300-
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-
230 pm cdt thu apr 9 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 15 kt backing to northeast. chance
of rain and snow showers overnight. waves 1 to 3 ft subsiding to
1 to 2 ft. 
.friday...north winds 10 to 15 kt becoming northwest 10 to 20 kt.
waves 1 to 3 ft. 
.friday night...north winds 10 to 15 kt backing to southwest.
waves 1 to 2 ft subsiding to 1 ft or less. 
.saturday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.saturday night...southeast winds 10 to 15 kt increasing to 15 to
25 kt overnight. chance of rain showers in the evening, then rain
showers overnight. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.sunday...south winds to 30 kt increasing to gales to 35 kt. rain
showers in the morning, then rain showers likely in the
afternoon. waves 6 to 9 ft occasionally to 12 ft building to 8 to
11 ft occasionally to 14 ft. 
.sunday night...southwest gales to 40 kt. rain showers likely.
waves 10 to 14 ft occasionally to 18 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
chance of rain showers. waves 8 to 12 ft occasionally to 16 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.tuesday...northeast winds to 30 kt diminishing to 10 to 20 kt.
rain showers likely. waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmqt 092001
glfls 
expires:202604100800;;098557

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

a 30.2 inch high pressure over the northern plains builds into the 
upper great lakes through tonight. 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. another low will take shape 
over the central plains on monday, deepening to 29.5 inches on 
tuesday with a weak 29.8 inch trough extending through the upper 
great lakes.



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

.late this afternoon...west winds 10 to 20 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...west winds 5 to 15 knots becoming northwest less than
10 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 diminishing to less than
10 knots late. 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 10 to 20 knots increasing to
20 to 30 knots after midnight. a chance of rain showers through
midnight, then rain showers after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.sunday...southeast winds 20 to 30 knots becoming south 15 to
25 knots by mid afternoon. rain showers. waves building to 5 to
8 feet occasionally to 10 feet. 
.sunday night...west winds 10 to 20 knots veering northwest after
midnight. rain showers likely through midnight, then a chance of
rain showers after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 4 to 7 feet occasionally
to 9 feet. 
.monday...north winds 10 to 20 knots becoming northeast 20 to
30 knots. a chance of rain showers. waves subsiding to 1 to
3 feet, then building to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northeast winds 20 to 30 knots veering east. a chance
of rain showers, possibly mixed with snow. waves subsiding to
3 to 5 feet occasionally to 7 feet, then building to 5 to 8 feet
occasionally to 10 feet. 

$$

fzus63 kmqt 092001
glfls 
expires:202604100800;;098558

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

a 30.2 inch high pressure over the northern plains builds into the 
upper great lakes through tonight. 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. another low will take shape 
over the central plains on monday, deepening to 29.5 inches on 
tuesday with a weak 29.8 inch trough extending through the upper 
great lakes.



lsz265-100800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt thu apr 9 2026

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

$$

fzus63 kmqt 092001
glfls 
expires:202604100800;;098555

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

a 30.2 inch high pressure over the northern plains builds into the 
upper great lakes through tonight. 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. another low will take shape 
over the central plains on monday, deepening to 29.5 inches on 
tuesday with a weak 29.8 inch trough extending through the upper 
great lakes.



lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt thu apr 9 2026 /300 pm cdt thu apr 9 2026/

.late this afternoon...west winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing east by mid
afternoon. a slight chance of rain showers, possibly mixed with
snow by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 10 to 20 knots. rain showers. waves
building to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots backing northeast by mid
afternoon. rain showers. a chance of thunderstorms by mid
afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 10 to 20 knots. rain showers likely
through midnight. waves building to 2 to 4 feet. 
.monday...east winds 5 to 15 knots becoming northeast 20 to
30 knots. rain showers likely. waves subsiding to calm to 2 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northeast winds 20 to 30 knots. a chance of rain
showers, possibly mixed with snow. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 6 to 9 feet occasionally
to 11 feet. 

$$

fzus63 kmqt 092001
glfls 
expires:202604100800;;098560

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

a 30.2 inch high pressure over the northern plains builds into the 
upper great lakes through tonight. 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. another low will take shape 
over the central plains on monday, deepening to 29.5 inches on 
tuesday with a weak 29.8 inch trough extending through the upper 
great lakes.



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

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

$$

fzus63 kmqt 092001
glfls 
expires:202604100800;;098559

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

a 30.2 inch high pressure over the northern plains builds into the 
upper great lakes through tonight. 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. another low will take shape 
over the central plains on monday, deepening to 29.5 inches on 
tuesday with a weak 29.8 inch trough extending through the upper 
great lakes.



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-
400 pm edt thu apr 9 2026

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

$$

fzus63 kmqt 092001
glfls 
expires:202604100800;;098556

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

a 30.2 inch high pressure over the northern plains builds into the 
upper great lakes through tonight. 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. another low will take shape 
over the central plains on monday, deepening to 29.5 inches on 
tuesday with a weak 29.8 inch trough extending through the upper 
great lakes.



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-
400 pm edt thu apr 9 2026

.late this afternoon...west winds 10 to 20 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...west winds 5 to 15 knots becoming northwest less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest late. waves
calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots late. waves calm to 2 feet. 
.saturday...south winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. a slight chance of rain showers by mid
afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots. rain showers.
waves building to 3 to 5 feet occasionally to 7 feet. 
.sunday...southeast winds 10 to 20 knots becoming south 5 to
15 knots by mid afternoon. rain showers. a chance of
thunderstorms by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...southwest winds 10 to 20 knots veering west after
midnight. rain showers likely through midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.monday...north winds 10 to 20 knots becoming northeast 20 to
30 knots. rain showers likely. waves subsiding to 1 to 3 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northeast winds 20 to 30 knots. a chance of rain
showers, possibly mixed with snow. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 

$$