fzus61 kbuf 041403
glflo 
expires:202606042100;;169415

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt thu jun 4 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 30.4 inch high will extend from the ohio valley to 
the eastern seaboard today. this high will drift off the southeast 
coast friday. a weak cold front will settle south across the lower 
great lakes saturday through saturday night. another 30.4 inch high 
will build southeast into the region monday and center near or just 
east of the lake through wednesday.


loz063>065-042100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt thu jun 4 2026

.this afternoon...southwest winds 5 to 15 knots becoming west.
waves 2 feet or less. 
.tonight...southwest winds 5 to 15 knots. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.friday night...southwest winds 5 to 15 knots becoming south. a
chance of showers overnight. waves 2 feet or less. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. showers with a chance of thunderstorms. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming northeast. a
chance of showers during the day. waves 2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 041403
glflo 
expires:202606042100;;169414

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt thu jun 4 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 30.4 inch high will extend from the ohio valley to 
the eastern seaboard today. this high will drift off the southeast 
coast friday. a weak cold front will settle south across the lower 
great lakes saturday through saturday night. another 30.4 inch high 
will build southeast into the region monday and center near or just 
east of the lake through wednesday.


loz062-042100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt thu jun 4 2026

.this afternoon...southwest winds 10 to 15 knots. waves 2 feet or
less. 
.tonight...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.friday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.friday night...southwest winds 15 to 20 knots. showers likely
overnight. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...southwest winds 15 to 20 knots becoming northwest
5 to 15 knots. showers with a chance of thunderstorms. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.sunday...northwest winds 5 to 10 knots becoming east. waves
1 foot or less. 
.monday...east winds 5 to 15 knots. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041401
glfle 
expires:202606042030;;169309

open lake forecast for lake erie
national weather service cleveland oh
1001 am edt thu jun 4 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...
high pressure ridging averaging 30.10 inches exits slowly
southeastward before a cold front sweeps southeastward across lake
erie saturday evening through saturday night. behind the front,
another ridge averaging 30.10 inches affects the lake erie region
through this tuesday as the embedded high pressure center moves
from near the northern great lakes toward the mid-atlantic states.


lez162-163-042030-
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-
1001 am edt thu jun 4 2026

.this afternoon...southwest winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.tonight...southeast winds 5 to 10 knots becoming southwest.
waves 1 foot or less. 
.friday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 2 feet. 
.friday night...southwest winds 15 to 20 knots. a chance of
showers in the evening, then showers likely with a chance of
thunderstorms overnight. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 20 knots becoming northwest
5 to 15 knots. showers with a chance of thunderstorms during the
day, then a chance of showers saturday night. waves 1 to 3 feet
subsiding to 1 foot or less. 
.sunday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.monday...east winds 10 to 15 knots becoming southeast. waves
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041401
glfle 
expires:202606042030;;169311

open lake forecast for lake erie
national weather service cleveland oh
1001 am edt thu jun 4 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...
high pressure ridging averaging 30.10 inches exits slowly
southeastward before a cold front sweeps southeastward across lake
erie saturday evening through saturday night. behind the front,
another ridge averaging 30.10 inches affects the lake erie region
through this tuesday as the embedded high pressure center moves
from near the northern great lakes toward the mid-atlantic states.


lez061-167>169-042030-
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-
1001 am edt thu jun 4 2026

.this afternoon...southwest winds 10 knots or less. waves 1 foot
or less. 
.tonight...south winds 10 knots or less becoming southwest. waves
2 feet or less. 
.friday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.friday night...southwest winds 10 to 15 knots increasing to
15 to 20 knots. showers likely overnight. waves 1 to 3 feet
building to 3 to 5 feet. 
.saturday...southwest winds 15 to 20 knots becoming northwest and
diminishing to less than 10 knots. showers likely with a chance
of thunderstorms during the day, then a chance of showers and
thunderstorms saturday night. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.sunday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.monday...east winds 5 to 15 knots becoming southeast. waves 1 to
3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041401
glfle 
expires:202606042030;;169310

open lake forecast for lake erie
national weather service cleveland oh
1001 am edt thu jun 4 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...
high pressure ridging averaging 30.10 inches exits slowly
southeastward before a cold front sweeps southeastward across lake
erie saturday evening through saturday night. behind the front,
another ridge averaging 30.10 inches affects the lake erie region
through this tuesday as the embedded high pressure center moves
from near the northern great lakes toward the mid-atlantic states.


lez164>166-042030-
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-
1001 am edt thu jun 4 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 041337
glfsc 
expires:202606042145;;168745

lake st clair forecast
national weather service detroit/pontiac mi
937 am edt thu jun 4 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...high pressure, 30.20 inches, continues to influence
the region through thursday morning. weak plains low pressure,
29.80 inches, lifts into the great lakes friday and saturday
bringing moderate winds and chances for scattered thunderstorms.


lcz460-042145-
lake st clair-
937 am edt thu jun 4 2026

.rest of today...south winds 5 to 10 knots increasing to 10 to 15
knots late in the afternoon. mostly sunny. waves 2 feet or less.
.tonight...south winds 10 to 15 knots becoming southwest 5 to 10
knots after midnight. partly cloudy. waves 2 feet or less.
.friday...southwest winds 10 to 15 knots increasing to 15 to 20
knots early in the afternoon. partly sunny. waves 2 feet or less.
.friday night...southwest winds 15 to 20 knots. light showers and a
chance of thunderstorms ...then light showers likely after midnight.
waves 1 to 3 feet.
.saturday...west winds 10 to 15 knots veering to the north in the
evening. mostly cloudy with a chance of light showers in the
morning...then showers and a chance of thunderstorms in the
afternoon and evening. waves 2 feet or less.
.sunday...northeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.
.monday...southeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 041336
glflh 
expires:202606042145;;168741

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt thu jun 4 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, 30.20 inches, continues to influence
the region through thursday morning. weak plains low pressure,
29.80 inches, lifts into the great lakes friday and saturday
bringing moderate winds and chances for scattered thunderstorms.


lhz462>464-042145-
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-
936 am edt thu jun 4 2026

.rest of today...south winds 5 to 10 knots. waves 2 feet or less.
.tonight...south winds 5 to 10 knots increasing to 10 to
15 knots. waves 2 feet or less. 
.friday...south winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet. 
.friday night...south winds 10 to 15 knots. showers and a chance
of thunderstorms in the evening...then showers after midnight.
waves 1 to 3 feet building to 2 to 4 feet in the late evening and
overnight. 
.saturday...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then becoming light and variable late in
the afternoon. showers likely. a chance of thunderstorms late in
the morning. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots. waves 2 feet or less. 
.monday...east winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 041336
glflh 
expires:202606042145;;168740

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt thu jun 4 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, 30.20 inches, continues to influence
the region through thursday morning. weak plains low pressure,
29.80 inches, lifts into the great lakes friday and saturday
bringing moderate winds and chances for scattered thunderstorms.


lhz362-363-042145-
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-
936 am edt thu jun 4 2026

.rest of today...south winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. waves 1 to 3 feet building to 3 to
5 feet late in the afternoon. 
.tonight...south winds 10 to 15 knots decreasing to 5 to 10 knots
after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet early
in the morning. 
.friday...south winds 10 to 15 knots. a chance of showers in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet early in the
afternoon. 
.friday night...south winds 10 to 15 knots becoming southwest
5 to 10 knots after midnight. showers in the evening...then
showers likely after midnight. waves 2 to 4 feet. 
.saturday...west winds 5 to 10 knots. a chance of showers. waves
1 to 3 feet. 
.sunday...north winds 5 to 10 knots early in the morning becoming
light and variable. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 041336
glflh 
expires:202606042145;;168739

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt thu jun 4 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, 30.20 inches, continues to influence
the region through thursday morning. weak plains low pressure,
29.80 inches, lifts into the great lakes friday and saturday
bringing moderate winds and chances for scattered thunderstorms.


lhz361-042145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
936 am edt thu jun 4 2026

.rest of today...light and variable winds becoming northeast 5 to
10 knots in the afternoon. waves 2 feet or less. 
.tonight...east winds 5 to 10 knots in the evening becoming light
and variable...then becoming south 5 to 10 knots early in the
morning. waves 1 to 3 feet. 
.friday...south winds 5 to 10 knots backing to the southeast
early in the afternoon. a chance of showers. waves 2 feet or
less. 
.friday night...east winds 5 to 10 knots early in the evening
becoming light and variable...then becoming west 5 to 10 knots
after midnight. showers likely. waves 2 feet or less. 
.saturday...northwest winds 5 to 10 knots becoming west 10 to
15 knots late in the morning...then becoming northwest 5 to
10 knots late in the evening. showers likely in the morning...
then a chance of showers late in the morning. waves 1 to 3 feet. 
.sunday...north winds 5 to 10 knots early in the morning becoming
light and variable...then becoming southeast 5 to 10 knots by
midnight. waves 2 feet or less. 
.monday...east winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots early in the evening decreasing to 10 to 15 knots
by midnight. waves 2 feet or less building to 3 to 5 feet. 


$$

fzus63 kmkx 041342
glflm 
expires:202606042115;;168897

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
842 am cdt thu jun 4 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure of 30.2 inches over the southeastern us will drift
east toward the atlantic today into tomorrow as a low of 29.6
inches over the central plains connects to another low of 29.7
inches over southern manitoba as a cold front between the two
tracks east into friday. continue to see this low pressure track 
east across the northern great lakes through friday bringing 
prevailing southwesterly winds to lake michigan along with shower 
and thunderstorm chances tonight through friday ahead of the cold 
front. then expect the cold front to push through the region later
friday into saturday bringing additional shower and thunderstorm 
chances along with a more northwest to westerly wind shift behind 
it into saturday. then winds weaken and become more variable as 
high pressure around 30.0 inches builds across the region later 
saturday into sunday. looking ahead to the start of next week will
bring an additional low pressure system to develop over the 
plains and bring a return of southerly winds to the upper great 
lakes.


lmz080-669-671-673-675-777-779-870-872-874-876-878-042115-
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-
842 am cdt thu jun 4 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 15 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft. 
.tonight...south winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
showers likely in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 4 to 6 ft occasionally
to 8 ft. 
.friday night...southwest winds 15 to 25 kt becoming west 10 to
20 kt. showers likely with a chance of thunderstorms. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.saturday...west winds 10 to 20 kt veering to north 10 to 15 kt.
chance of showers in the morning. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.saturday night...north winds 5 to 10 kt becoming northeast.
waves 1 ft or less. 
.sunday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.monday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 041342
glflm 
expires:202606042115;;168896

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
842 am cdt thu jun 4 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

high pressure of 30.2 inches over the southeastern us will drift
east toward the atlantic today into tomorrow as a low of 29.6
inches over the central plains connects to another low of 29.7
inches over southern manitoba as a cold front between the two
tracks east into friday. continue to see this low pressure track 
east across the northern great lakes through friday bringing 
prevailing southwesterly winds to lake michigan along with shower 
and thunderstorm chances tonight through friday ahead of the cold 
front. then expect the cold front to push through the region later
friday into saturday bringing additional shower and thunderstorm 
chances along with a more northwest to westerly wind shift behind 
it into saturday. then winds weaken and become more variable as 
high pressure around 30.0 inches builds across the region later 
saturday into sunday. looking ahead to the start of next week will
bring an additional low pressure system to develop over the 
plains and bring a return of southerly winds to the upper great 
lakes.


lmz261-362-364-366-563-565-567-868-042115-
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-
842 am cdt thu jun 4 2026

sheboygan wi to pentwater mi north...

.rest of today...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft. 
.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. slight chance of showers in the evening, then chance of
showers overnight. waves 4 to 6 ft occasionally to 8 ft subsiding
to 3 to 5 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers. waves 4 to 6 ft occasionally to 8 ft. 
.friday night...southwest winds 10 to 20 kt becoming west 10 to
15 kt. showers likely with a chance of thunderstorms in the
evening, then showers likely overnight. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.saturday...north winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...north winds 5 to 10 kt becoming northeast.
waves 1 to 2 ft. 
.sunday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.monday...southeast winds 10 to 20 kt becoming east. waves 2 to
4 ft.  

$$

fzus63 kmqt 041401
glfls 
expires:202606042000;;169292

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 4 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... 

high pressure of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz162-042000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt thu jun 4 2026 /900 am cdt thu jun 4 2026/

.rest of today...south winds 5 to 15 knots. a chance of showers.
a slight chance of thunderstorms by mid afternoon. waves calm to
2 feet. 
.tonight...south winds 5 to 15 knots veering southwest after
midnight. a slight chance of thunderstorms through midnight. a
chance of rain showers. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.friday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northeast winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.monday...northeast winds 10 to 20 knots becoming east 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202606042000;;169297

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 4 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... 

high pressure of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz267-042000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt thu jun 4 2026

.rest of today...south winds 10 to 20 knots. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.tonight...south winds 10 to 20 knots. a chance of showers and a
slight chance of thunderstorms. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.friday...south winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing southeast late. a slight chance of
showers. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots veering northwest after
midnight. a chance of rain showers. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 
.monday...southeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202606042000;;169293

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 4 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... 

high pressure of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz263-042000-
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 am edt thu jun 4 2026

.rest of today...south winds 5 to 15 knots. a chance of showers
and a slight chance of thunderstorms. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west late. a slight
chance of thunderstorms through midnight. a chance of rain
showers. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.friday night...southwest winds 5 to 15 knots veering north after
midnight. a slight chance of rain showers through midnight. waves
calm to 2 feet. 
.saturday...north winds less than 10 knots veering east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots. waves calm to 2 feet.
.sunday...northeast winds 10 to 20 knots veering southeast. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots veering southeast. a chance of
showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202606042000;;169294

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 4 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... 

high pressure of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz264-042000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt thu jun 4 2026

.rest of today...southwest winds 5 to 15 knots backing south in
the afternoon. a slight chance of showers. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest late. a
slight chance of thunderstorms through midnight. a chance of rain
showers. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then backing south late. a slight
chance of rain showers. waves calm to 2 feet. 
.friday night...southeast winds less than 10 knots backing north
after midnight. a slight chance of rain showers. waves calm to
2 feet. 
.saturday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.saturday night...northwest winds less than 10 knots veering east
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.monday...southeast winds 10 to 20 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202606042000;;169295

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 4 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... 

high pressure of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz265-042000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt thu jun 4 2026

.rest of today...south winds 10 to 20 knots backing southeast
late. a slight chance of showers. a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south after
midnight, then becoming southwest 5 to 15 knots late. a slight
chance of thunderstorms through midnight. a chance of showers.
waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing east in the
afternoon. a chance of showers. a slight chance of thunderstorms
by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing north after
midnight. a slight chance of showers. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots. waves calm to 2 feet.
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 041401
glfls 
expires:202606042000;;169296

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu jun 4 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... 

high pressure of 30.2 inches over the ohio river valley shifts 
southeast and weakens to 30.1 inches today. meanwhile, 30.0 inch 
troughing over lake superior deepens to 29.8 inches through tonight 
as a 29.7 inch low approaches from the northwest. troughing persists 
over the lake and gradually deepens to 29.7 inches through friday 
night. weak ridging near 29.9 inches returns on saturday extending 
from a weak high of 30.0 inches over eastern hudson bay. sunday, the 
high builds to 30.1 inches over quebec while 29.4 inch low pressure 
spins over northern saskatchewan. monday, the high builds to 30.3 
inches over the mouth of the st. lawrence river while a 29.6 inch 
low over northern manitoba extends troughing south over the great 
plains. 




lsz266-042000-
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 am edt thu jun 4 2026

.rest of today...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing southeast late. a slight
chance of showers by mid afternoon. waves 1 to 3 feet subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.tonight...south winds 10 to 20 knots becoming southwest 5 to
15 knots late. a slight chance of thunderstorms through midnight.
a chance of showers. waves 1 to 3 feet. 
.friday...south winds 5 to 15 knots backing east late. a chance
of showers. a slight chance of thunderstorms by mid afternoon.
waves subsiding to calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots backing north after
midnight. a chance of rain showers. waves calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southeast winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$