fzus61 kbuf 242002
glflo 
expires:202605250300;;584135

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun may 24 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 30.0 inch low and associated warm front will track 
just south of the lake tonight and to new england by monday morning. 
a 30.1 inch high will settle across the region monday through 
tuesday. a cold front associated with a 29.8 inch low over new 
england will drop south across the lake on wednesday morning. a 30.2 
inch surface high pressure over canada will start to expand south 
over the lake on thursday into friday.


loz063>065-250300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun may 24 2026

.tonight...southeast winds 15 to 20 knots becoming south 10 to
15 knots. a chance of showers early, then rain from late evening
on. patchy fog late. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots becoming west. a chance
of showers early. patchy fog in the morning. waves 2 feet or
less. 
.monday night...southwest winds 5 to 10 knots. waves 2 feet or
less. 
.tuesday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.tuesday night...southwest winds 10 to 15 knots becoming west.
waves 1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.friday...west winds 5 to 10 knots. waves 2 feet or less. 

$$

fzus61 kbuf 242002
glflo 
expires:202605250300;;584134

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun may 24 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 30.0 inch low and associated warm front will track 
just south of the lake tonight and to new england by monday morning. 
a 30.1 inch high will settle across the region monday through 
tuesday. a cold front associated with a 29.8 inch low over new 
england will drop south across the lake on wednesday morning. a 30.2 
inch surface high pressure over canada will start to expand south 
over the lake on thursday into friday.


loz062-250300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun may 24 2026

.tonight...east winds 10 knots or less becoming west. a chance of
showers early, then rain. a chance of showers late. patchy fog
after midnight. waves 2 feet or less. 
.monday...northwest winds 10 knots or less becoming southwest.
patchy fog in the morning. waves 1 foot or less. 
.monday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.tuesday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.tuesday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.wednesday...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northwest. waves
1 foot or less. 
.friday...west winds 5 to 10 knots. waves 2 feet or less. 

$$

fzus61 kcle 241954
glfle 
expires:202605250215;;583807

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt sun may 24 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...
low pressure 30.00 inches will sweep a cold front east across the
lake this evening. high pressure 30.10 inches builds into the 
region on monday and will influence lake erie through mid-week.


lez164>166-250215-
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-
354 pm edt sun may 24 2026

.tonight...northeast winds 10 knots or less becoming northwest. a
chance of showers with a slight chance of thunderstorms early,
then a slight chance of showers late this evening. waves 1 foot
or less. 
.monday...north winds 10 knots or less. patchy dense fog early.
waves 1 foot or less. 
.monday night...light and variable winds. waves 1 foot or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.tuesday night...light and variable winds becoming southwest 5 to
10 knots. waves 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.thursday...northeast winds 5 to 10 knots becoming north. waves
1 to 2 feet. 
.friday...north winds 5 to 10 knots becoming east. waves 1 to
3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 241954
glfle 
expires:202605250215;;583808

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt sun may 24 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...
low pressure 30.00 inches will sweep a cold front east across the
lake this evening. high pressure 30.10 inches builds into the 
region on monday and will influence lake erie through mid-week.


lez061-167>169-250215-
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-
354 pm edt sun may 24 2026

.tonight...northeast winds 10 knots or less becoming northwest. a
chance of showers with a slight chance of thunderstorms early,
then a chance of showers late this evening. a slight chance of
showers after midnight. patchy dense fog late. waves 1 foot or
less. 
.monday...northwest winds less than 10 knots becoming west.
patchy dense fog early. waves 1 foot or less. 
.monday night...light and variable winds. waves 1 foot or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.tuesday night...southwest winds 10 knots or less. waves 1 foot
or less. 
.wednesday...southwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.thursday...northeast winds 5 to 10 knots becoming north. waves
2 feet or less. 
.friday...northwest winds 10 knots or less becoming northeast.
waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 241954
glfle 
expires:202605250215;;583806

open lake forecast for lake erie
national weather service cleveland oh
354 pm edt sun may 24 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...
low pressure 30.00 inches will sweep a cold front east across the
lake this evening. high pressure 30.10 inches builds into the 
region on monday and will influence lake erie through mid-week.


lez162-163-250215-
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-
354 pm edt sun may 24 2026

.tonight...east winds 10 knots or less becoming northwest. a
chance of showers with a slight chance of thunderstorms early,
then a slight chance of showers late this evening. waves 1 foot
or less. 
.monday...north winds 10 knots or less becoming southeast. waves
1 foot or less. 
.monday night...southeast winds less than 10 knots. waves 1 foot
or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.tuesday night...south winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.wednesday...west winds 10 knots or less becoming northeast 10 to
15 knots. waves 1 foot or less. 
.thursday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.friday...north winds 10 knots or less becoming east 10 to
15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 241933
glfsc 
expires:202605250345;;583359

lake st clair forecast
national weather service detroit/pontiac mi
333 pm edt sun may 24 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...light winds prevail today across the central great
lakes. a cold front slowly sags south across lake huron monday
through tuesday, with breezy southwest winds ahead of the front.
this front moves south across the area wednesday into wednesday
night, as high pressure builds in from the north. varying winds
are expected through the end of the week.


lcz460-250345-
lake st clair-
333 pm edt sun may 24 2026

.tonight...light and variable winds becoming northwest 5 to 10 knots
after midnight. mostly cloudy becoming partly cloudy. light showers
likely early in the evening. waves 2 feet or less.
.monday...north winds 5 to 10 knots in the morning becoming light
and variable...then becoming southeast 5 to 10 knots late in the
afternoon. partly sunny. waves 2 feet or less.
.monday night...south winds 5 to 10 knots becoming light and
variable. mostly clear. waves 2 feet or less.
.tuesday...light and variable winds becoming south 5 to 10 knots in
the late morning and afternoon. mostly sunny. waves 2 feet or less.
.tuesday night...southwest winds 5 to 10 knots. partly cloudy. waves
2 feet or less.
.wednesday...light and variable winds becoming northeast 5 to 10
knots in the afternoon...then increasing to 10 to 15 knots in the
evening. mostly sunny in the morning becoming partly cloudy. waves 2
feet or less.
.thursday...northeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.friday...east winds 10 to 15 knots. mostly clear. waves 2 feet or
less.

$$

fzus63 kdtx 241933
glflh 
expires:202605250345;;583355

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 pm edt sun may 24 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...light winds prevail today across the central great
lakes. a cold front slowly sags south across lake huron monday
through tuesday, with breezy southwest winds ahead of the front.
this front moves south across the area wednesday into wednesday
night, as high pressure builds in from the north. varying winds
are expected through the end of the week.


lhz361-250345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
333 pm edt sun may 24 2026

.tonight...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming north 5 to 10 knots
early in the afternoon...then veering to the east late in the
afternoon. waves 2 feet or less. 
.monday night...southeast winds 5 to 10 knots veering to the
south after midnight. waves 2 feet or less. 
.tuesday...south winds 10 to 15 knots veering to the west in the
late morning and afternoon. waves 1 to 3 feet building to 2 to
4 feet early in the afternoon. 
.tuesday night...west winds 10 to 15 knots becoming northwest
5 to 10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.wednesday...north winds 5 to 10 knots in the morning becoming
light and variable...then becoming west 10 to 15 knots late in
the afternoon. waves 2 feet or less. 
.thursday...northeast winds 5 to 10 knots early in the morning
becoming light and variable...then becoming southwest 5 to
10 knots early in the evening veering to the west. waves 2 feet
or less. 
.friday...west winds 5 to 10 knots increasing to 10 to 15 knots
by midnight. waves 2 feet or less. 


$$

fzus63 kdtx 241933
glflh 
expires:202605250345;;583356

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 pm edt sun may 24 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...light winds prevail today across the central great
lakes. a cold front slowly sags south across lake huron monday
through tuesday, with breezy southwest winds ahead of the front.
this front moves south across the area wednesday into wednesday
night, as high pressure builds in from the north. varying winds
are expected through the end of the week.


lhz362-363-250345-
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-
333 pm edt sun may 24 2026

.tonight...southeast winds 5 to 10 knots early in the evening
becoming light and variable. a chance of showers in the evening.
waves 2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots
late in the morning...then increasing to 10 to 15 knots in the
afternoon. waves 2 feet or less. 
.monday night...south winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.tuesday night...southwest winds 5 to 10 knots veering to the
northwest after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.wednesday...north winds 5 to 10 knots increasing to 10 to
15 knots late in the evening. waves 2 feet or less. 
.thursday...north winds 10 to 15 knots decreasing to 5 to
10 knots until early evening...then backing to the west by
midnight. waves 1 to 3 feet. 
.friday...west winds 5 to 10 knots backing to the southeast by
midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 241933
glflh 
expires:202605250345;;583357

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 pm edt sun may 24 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...light winds prevail today across the central great
lakes. a cold front slowly sags south across lake huron monday
through tuesday, with breezy southwest winds ahead of the front.
this front moves south across the area wednesday into wednesday
night, as high pressure builds in from the north. varying winds
are expected through the end of the week.


lhz462>464-250345-
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-
333 pm edt sun may 24 2026

.tonight...east winds 5 to 10 knots early in the evening becoming
light and variable. a chance of showers in the evening. waves
2 feet or less. 
.monday...light and variable winds becoming south 5 to 10 knots
in the afternoon. waves 2 feet or less. 
.monday night...south winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. waves 1 to 3 feet. 
.tuesday night...southwest winds 5 to 10 knots veering to the
west after midnight. waves 2 feet or less. 
.wednesday...north winds 5 to 10 knots increasing to 10 to
15 knots late in the evening. waves 2 feet or less. 
.thursday...north winds 10 to 15 knots becoming light and
variable. waves 1 to 3 feet. 
.friday...light and variable winds becoming northwest 5 to
10 knots in the late morning and early afternoon...then veering
to the north . waves 1 to 3 feet building to 2 to 4 feet . 


$$

fzus63 kmkx 241942
glflm 
expires:202605250315;;583592

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt sun may 24 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...

developing high pressure of 30.2 inches over the lake tonight 
with mostly modest south the southwest flow, lighter toward the 
base of the low. as the high develops some fog over the lake may
develop but the drier conditions may limit the degree of fog. a
marine dense fog advisory may be needed for a time across 
southern open waters for tonight into monday morning.

the base of the higher pressure will push to the east but will
remain over the general region keeping precipitation mostly away
from the lake. there will be chances over the northern part of
the lake with a warm front in the vicinity but likely doesnt
play as much a role until later tuesday into tuesday night as
the warm front sags back south (cold front) as high pressure
around 30.1 inches develops in the northern great lake region 
that will be connected with a more substantial high pressure 
around 30.3 inches building toward eastern hudson bay.
precipitation likely tuesday into wednesday over northern and
perhaps central parts of the lake with southern parts of the
lake more uncertain into wednesday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-250315-
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-
242 pm cdt sun may 24 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 15 kt. patchy fog. waves 1 to 2 ft. 
.monday...south winds 10 to 15 kt increasing to 10 to 20 kt.
patchy fog in the morning. waves 2 to 4 ft. 
.monday night...south winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday night...south winds 10 to 20 kt diminishing to 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt becoming north 10 to
20 kt in the afternoon. waves 1 to 2 ft building to 2 to 4 ft. 
.wednesday night...north winds 10 to 20 kt becoming northeast.
waves 3 to 5 ft. 
.thursday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 2 to 4 ft. 
.friday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 241942
glflm 
expires:202605250315;;583591

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
242 pm cdt sun may 24 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...

developing high pressure of 30.2 inches over the lake tonight 
with mostly modest south the southwest flow, lighter toward the 
base of the low. as the high develops some fog over the lake may
develop but the drier conditions may limit the degree of fog. a
marine dense fog advisory may be needed for a time across 
southern open waters for tonight into monday morning.

the base of the higher pressure will push to the east but will
remain over the general region keeping precipitation mostly away
from the lake. there will be chances over the northern part of
the lake with a warm front in the vicinity but likely doesnt
play as much a role until later tuesday into tuesday night as
the warm front sags back south (cold front) as high pressure
around 30.1 inches develops in the northern great lake region 
that will be connected with a more substantial high pressure 
around 30.3 inches building toward eastern hudson bay.
precipitation likely tuesday into wednesday over northern and
perhaps central parts of the lake with southern parts of the
lake more uncertain into wednesday.


lmz261-362-364-366-563-565-567-868-250315-
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-
242 pm cdt sun may 24 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 15 kt increasing to 10 to 20 kt.
patchy fog this evening, then areas of dense fog overnight. waves
1 to 2 ft. 
.monday...south winds 10 to 20 kt increasing to 15 to 25 kt.
patchy fog in the morning. waves 2 to 4 ft. 
.monday night...south winds 15 to 25 kt becoming southwest to
30 kt. waves 3 to 5 ft. 
.tuesday...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming west 5 to
10 kt overnight. waves 2 to 4 ft. 
.wednesday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.wednesday night...north winds 10 to 20 kt becoming northeast.
waves 3 to 5 ft. 
.thursday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.friday...southwest winds 5 to 10 kt becoming south 10 to 15 kt.
waves 1 to 2 ft.  

$$

fzus63 kmqt 242001
glfls 
expires:202605250800;;584007

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun may 24 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 off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. this will keep weak ridging of 29.9 inches over 
lake superior. a 30.1 inch ridge forms monday over the lower great 
lakes as the trough retreats to alberta. monday night, a 29.7 inch 
trough will be over northern ontario, extending 29.9 inch troughing 
over the lake. by tuesday night, a 30.2 inch high over the western 
shores of hudson bay will extend weak ridging over lake superior 
with 29.4 inch troughing forming in the lee of the northern us 
rockies. pressure rises over the lake as the high shifts southeast 
over northern ontario while low pressure over the west weakens on 
wednesday and thursday.



lsz264-250800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt sun may 24 2026

.late this afternoon...southwest winds 5 to 15 knots. areas of
dense fog. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots. patchy dense fog. waves
calm to 2 feet. 
.monday...south winds 5 to 15 knots. patchy fog through early
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west 10 to
20 knots after midnight. a slight chance of thunderstorms through
midnight. a chance of showers. waves building to 1 to 3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming west less than
10 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...east winds less than 10 knots becoming northeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...northeast winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming south less than
10 knots. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots backing east. waves calm to
2 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202605250800;;584008

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun may 24 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 off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. this will keep weak ridging of 29.9 inches over 
lake superior. a 30.1 inch ridge forms monday over the lower great 
lakes as the trough retreats to alberta. monday night, a 29.7 inch 
trough will be over northern ontario, extending 29.9 inch troughing 
over the lake. by tuesday night, a 30.2 inch high over the western 
shores of hudson bay will extend weak ridging over lake superior 
with 29.4 inch troughing forming in the lee of the northern us 
rockies. pressure rises over the lake as the high shifts southeast 
over northern ontario while low pressure over the west weakens on 
wednesday and thursday.



lsz265-250800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sun may 24 2026

.late this afternoon...southeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering southwest late.
a slight chance of rain showers through midnight. patchy fog.
waves calm to 2 feet. 
.monday...southwest winds 10 to 20 knots backing south in the
afternoon, then diminishing to 5 to 15 knots late. a slight
chance of showers and thunderstorms by mid afternoon. waves calm
to 2 feet. 
.monday night...south winds 5 to 15 knots becoming southwest
15 to 25 knots after midnight, then veering west late. a slight
chance of thunderstorms through midnight. a slight chance of
showers. waves building to 1 to 3 feet. 
.tuesday...northwest winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...southeast winds 5 to 15 knots backing northeast
after midnight. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...northeast winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202605250800;;584005

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun may 24 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 off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. this will keep weak ridging of 29.9 inches over 
lake superior. a 30.1 inch ridge forms monday over the lower great 
lakes as the trough retreats to alberta. monday night, a 29.7 inch 
trough will be over northern ontario, extending 29.9 inch troughing 
over the lake. by tuesday night, a 30.2 inch high over the western 
shores of hudson bay will extend weak ridging over lake superior 
with 29.4 inch troughing forming in the lee of the northern us 
rockies. pressure rises over the lake as the high shifts southeast 
over northern ontario while low pressure over the west weakens on 
wednesday and thursday.



lsz162-250800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sun may 24 2026 /300 pm cdt sun may 24 2026/

.late this afternoon...south winds 5 to 15 knots. patchy fog. a
slight chance of showers and thunderstorms. waves calm to 2 feet.
.tonight...southeast winds 5 to 15 knots backing northeast after
midnight, then veering southwest late. patchy fog through
midnight. a slight chance of rain showers. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers and thunderstorms by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of showers and thunderstorms through
midnight. waves calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.wednesday...northeast winds 10 to 20 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots backing north. waves
calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202605250800;;584010

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun may 24 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 off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. this will keep weak ridging of 29.9 inches over 
lake superior. a 30.1 inch ridge forms monday over the lower great 
lakes as the trough retreats to alberta. monday night, a 29.7 inch 
trough will be over northern ontario, extending 29.9 inch troughing 
over the lake. by tuesday night, a 30.2 inch high over the western 
shores of hudson bay will extend weak ridging over lake superior 
with 29.4 inch troughing forming in the lee of the northern us 
rockies. pressure rises over the lake as the high shifts southeast 
over northern ontario while low pressure over the west weakens on 
wednesday and thursday.



lsz267-250800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt sun may 24 2026

...dense fog advisory in effect until 8 am edt monday...

.late this afternoon...southwest winds 5 to 15 knots. areas of
dense fog. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight. areas of dense fog. waves calm to
2 feet. 
.monday...south winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then increasing to 10 to 20 knots late. patchy
fog through early afternoon. waves calm to 2 feet. 
.monday night...south winds 15 to 25 knots veering southwest
after midnight, then becoming west 10 to 20 knots late. a slight
chance of showers and thunderstorms. waves building to 2 to
4 feet. 
.tuesday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.tuesday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots becoming northwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering east. waves calm to
2 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202605250800;;584009

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun may 24 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 off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. this will keep weak ridging of 29.9 inches over 
lake superior. a 30.1 inch ridge forms monday over the lower great 
lakes as the trough retreats to alberta. monday night, a 29.7 inch 
trough will be over northern ontario, extending 29.9 inch troughing 
over the lake. by tuesday night, a 30.2 inch high over the western 
shores of hudson bay will extend weak ridging over lake superior 
with 29.4 inch troughing forming in the lee of the northern us 
rockies. pressure rises over the lake as the high shifts southeast 
over northern ontario while low pressure over the west weakens on 
wednesday and thursday.



lsz266-250800-
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 sun may 24 2026

...dense fog advisory in effect until 8 am edt monday...

.late this afternoon...southeast winds 5 to 15 knots. areas of
dense fog. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
a slight chance of rain showers through midnight. patchy dense
fog. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots increasing to 10 to 20 knots
late. patchy fog through early afternoon. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.monday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight, then becoming west 10 to 20 knots
late. a slight chance of thunderstorms through midnight. a chance
of showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.tuesday...northwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.tuesday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots becoming north 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots veering east. waves calm
to 2 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202605250800;;584006

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun may 24 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 off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. this will keep weak ridging of 29.9 inches over 
lake superior. a 30.1 inch ridge forms monday over the lower great 
lakes as the trough retreats to alberta. monday night, a 29.7 inch 
trough will be over northern ontario, extending 29.9 inch troughing 
over the lake. by tuesday night, a 30.2 inch high over the western 
shores of hudson bay will extend weak ridging over lake superior 
with 29.4 inch troughing forming in the lee of the northern us 
rockies. pressure rises over the lake as the high shifts southeast 
over northern ontario while low pressure over the west weakens on 
wednesday and thursday.



lsz263-250800-
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 sun may 24 2026

.late this afternoon...southwest winds 10 to 20 knots. patchy
dense fog. a slight chance of rain showers. waves 1 to 3 feet. 
.tonight...south winds 5 to 15 knots veering southwest late.
patchy fog. a slight chance of thunderstorms through midnight. a
slight chance of rain showers. waves subsiding to calm to 2 feet.
.monday...southwest winds 5 to 15 knots. patchy dense fog through
early afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. a chance of showers and a slight chance of
thunderstorms through midnight. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots becoming east less than
10 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots backing northeast after
midnight. waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...east winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming southwest less than
10 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$