fzus61 kbuf 221403
glflo 
expires:202607222100;;411135

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt wed jul 22 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 30.2 inch high will build across the region through friday. the 
high will move off the east coast saturday. a 29.7 inch low will 
approach from the northwest through sunday.


loz062-222100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt wed jul 22 2026

.rest of today...west winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.tonight...northwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...west winds 5 to 10 knots becoming southwest. waves
1 to 2 feet. 
.thursday night...southwest winds 10 knots or less. waves 1 foot
or less. 
.friday...south winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...south winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 5 to 15 knots becoming west. a chance
of showers. waves 2 feet or less. 

$$

fzus61 kbuf 221403
glflo 
expires:202607222100;;411136

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt wed jul 22 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 30.2 inch high will build across the region through friday. the 
high will move off the east coast saturday. a 29.7 inch low will 
approach from the northwest through sunday.


loz063>065-222100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt wed jul 22 2026

.rest of today...west winds to 30 knots. a chance of showers late
this morning. waves 5 to 9 feet. waves occasionally around
11 feet. 
.tonight...west winds 15 to 25 knots diminishing to 5 to
10 knots. waves 5 to 8 feet subsiding to 1 to 2 feet. waves
occasionally around 10 feet. 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday night...west winds 5 to 10 knots becoming southwest.
waves 2 feet or less. 
.friday...south winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots. a chance of showers.
waves 2 feet or less. 

$$

fzus61 kcle 221354
glfle 
expires:202607222015;;410902

open lake forecast for lake erie
national weather service cleveland oh
954 am edt wed jul 22 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 trough averaging 29.90 inches will linger over the lower great
lakes through this evening before high pressure 30.20 inches
builds east over the region early thursday. the high will maintain
influence through friday night and drift east on saturday. a 
trough averaging 29.90 inches will move east across lake erie late
saturday into sunday.


lez164-165-222015-
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-
954 am edt wed jul 22 2026

.this afternoon...northwest winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 10 knots becoming north. a slight
chance of waterspouts late. a slight chance of showers late.
waves 1 to 2 feet. 
.thursday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.thursday night...east winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.friday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...southwest winds 10 knots or less. waves 1 foot or
less. 
.sunday...west winds 10 to 15 knots becoming southwest. a chance
of showers during the day, then a chance of showers and
thunderstorms sunday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221354
glfle 
expires:202607222015;;410903

open lake forecast for lake erie
national weather service cleveland oh
954 am edt wed jul 22 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 trough averaging 29.90 inches will linger over the lower great
lakes through this evening before high pressure 30.20 inches
builds east over the region early thursday. the high will maintain
influence through friday night and drift east on saturday. a 
trough averaging 29.90 inches will move east across lake erie late
saturday into sunday.


lez061-166>169-222015-
ripley to buffalo ny extending from 5nm 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-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-
954 am edt wed jul 22 2026

.this afternoon...northwest winds 15 to 20 knots. a slight chance
of waterspouts. a slight chance of showers. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.tonight...northwest winds 5 to 15 knots becoming north. a slight
chance of waterspouts early. a slight chance of waterspouts late.
a slight chance of showers early. a slight chance of showers
late. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday...north winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.thursday night...south winds less than 10 knots becoming
southeast. waves 1 foot or less. 
.friday...southeast winds 10 knots or less. waves 1 foot or less.
.saturday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday...southwest winds 10 to 15 knots. a chance of showers
during the day, then a chance of showers and thunderstorms sunday
night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221354
glfle 
expires:202607222015;;410901

open lake forecast for lake erie
national weather service cleveland oh
954 am edt wed jul 22 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 trough averaging 29.90 inches will linger over the lower great
lakes through this evening before high pressure 30.20 inches
builds east over the region early thursday. the high will maintain
influence through friday night and drift east on saturday. a 
trough averaging 29.90 inches will move east across lake erie late
saturday into sunday.


lez162-163-222015-
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-
954 am edt wed jul 22 2026

.this afternoon...northwest winds 5 to 15 knots. waves 1 to 3 feet
subsiding to 1 foot or less. 
.tonight...northwest winds 5 to 10 knots becoming north. a slight
chance of waterspouts late. a slight chance of showers late.
waves 1 foot or less. 
.thursday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.thursday night...southeast winds less than 10 knots becoming
south. waves 1 foot or less. 
.friday...light and variable winds. waves 1 foot or less. 
.saturday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.sunday...west winds around 10 knots becoming southwest. a chance
of showers and thunderstorms sunday night. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 221354
glfsc 
expires:202607222200;;410912

lake st clair forecast
national weather service detroit/pontiac mi
954 am edt wed jul 22 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 fills into the great lakes region today,
providing dry and subsiding northwest flow for the rest of the
week.


lcz460-222200-
lake st clair-
954 am edt wed jul 22 2026

.rest of today...northwest winds 15 to 20 knots diminishing to 10 to
15 knots in the afternoon. mostly sunny. waves 2 feet or less.
.tonight...north winds 10 to 15 knots diminishing to 5 to 10 knots
in the late evening and overnight. mostly clear. waves 2 feet or
less.
.thursday...north winds 5 to 10 knots early in the morning becoming
light and variable...then becoming east 5 to 10 knots early in the
afternoon. sunny. waves 2 feet or less.
.thursday night...southeast winds 5 to 10 knots becoming light and
variable. clear. waves 2 feet or less.
.friday...light and variable winds becoming southeast 5 to 10 knots
in the afternoon and evening. mostly sunny in the morning becoming
clear. waves 2 feet or less.
.saturday...south winds 10 to 15 knots. clear. waves 2 feet or less.
.sunday...southwest winds 10 to 15 knots. mostly clear. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 221354
glflh 
expires:202607222200;;410905

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 am edt wed jul 22 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 fills into the great lakes region today,
providing dry and subsiding northwest flow for the rest of the
week.


lhz361-222200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
954 am edt wed jul 22 2026

.rest of today...northwest winds 20 to 25 knots decreasing to
15 to 20 knots late in the afternoon. gusts to 30 knots. waves
6 to 9 feet. waves occasionally around 12 feet. 
.tonight...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late evening and
overnight. waves 3 to 5 feet subsiding to 1 to 3 feet early in
the morning. 
.thursday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday night...southwest winds 5 to 10 knots. waves 1 to
3 feet. 
.friday...southwest winds 10 to 15 knots becoming south 5 to
10 knots late in the morning...then backing to the southeast late
in the afternoon. waves 1 to 3 feet building to 3 to 5 feet late
in the afternoon. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then veering to the southwest by
midnight. a chance of showers . waves 1 to 3 feet. 
.sunday...west winds 10 to 15 knots decreasing to 5 to 10 knots
in the late morning and early afternoon...then increasing to
10 to 15 knots . a chance of showers early in the morning. a
chance of showers by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 221354
glflh 
expires:202607222200;;410906

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 am edt wed jul 22 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 fills into the great lakes region today,
providing dry and subsiding northwest flow for the rest of the
week.


lhz362-363-222200-
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-
954 am edt wed jul 22 2026

.rest of today...northwest winds 20 to 25 knots with gusts to
around 30 knots. waves 8 to 12 feet. waves occasionally around
15 feet. 
.tonight...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 10 to 15 knots after midnight. waves 4 to
6 feet. 
.thursday...west winds 5 to 10 knots backing to the south early
in the afternoon. waves 1 to 3 feet. waves occasionally around
8 feet. 
.thursday night...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late evening and overnight. waves 1 to 3 feet. 
.friday...southwest winds 5 to 10 knots becoming southeast 10 to
15 knots late in the afternoon. waves 1 to 3 feet building to
3 to 5 feet late in the afternoon. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots until early evening...then decreasing to 5 to 10 knots
by midnight. a chance of showers by midnight. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday...southwest winds 5 to 10 knots. a chance of showers
early in the morning. a chance of showers . waves 1 to 3 feet. 


$$

fzus63 kdtx 221354
glflh 
expires:202607222200;;410907

open lake forecast for lake huron
national weather service detroit/pontiac mi
954 am edt wed jul 22 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 fills into the great lakes region today,
providing dry and subsiding northwest flow for the rest of the
week.


lhz462>464-222200-
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-
954 am edt wed jul 22 2026

.rest of today...northwest winds 15 to 20 knots decreasing to
10 to 15 knots late in the afternoon. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.tonight...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the morning. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday...northwest winds 5 to 10 knots until late afternoon
becoming light and variable. waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.thursday night...south winds 5 to 10 knots increasing to 10 to
15 knots after midnight. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots backing to the southeast
late in the afternoon. waves 2 feet or less. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots by midnight. a chance of showers by midnight. waves
2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . a chance of showers early in the morning...then a
chance of showers and thunderstorms. waves 1 to 3 feet. 


$$

fzus63 kmkx 221407
glflm 
expires:202607222115;;411368

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
907 am cdt wed jul 22 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...

gusty northerly winds will remain gradually diminish today as 
high pressure around 30.1 inches will build into the northern 
mississippi river valley from the great plains. the high will 
cross southern lake michigan thursday morning and progress into 
the northeastern united states thursday night into friday. 
progression of the high will result in a south to southwest wind 
shift across the waters.

29.5 inch low pressure will move quickly from the canadian great 
plains toward quebec friday through saturday, maintaining south to
southwest winds over lake michigan. the low will attempt to pull 
a cold front into the western great lakes by sunday, with the 
boundary slowly advancing south across the waters through monday. 
the approaching/passing front will result in returning 
thunderstorm chances saturday night through monday, in addition to
a northerly wind shift by monday afternoon.


lmz080-669-671-673-675-777-779-870-872-874-876-878-222115-
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-
907 am cdt wed jul 22 2026

sheboygan wi to pentwater mi south...

.rest of today...north winds 10 to 20 kt increasing to 15 to
25 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.tonight...north winds 10 to 20 kt becoming northwest 10 to 15 kt
late in the evening, then diminishing to 5 to 10 kt after
midnight increasing to 10 to 15 kt late. waves 3 to 5 ft
subsiding to 1 to 3 ft. 
.thursday...west winds 10 to 15 kt backing to south 10 to 20 kt.
waves 1 to 3 ft. 
.thursday night...south winds 10 to 20 kt becoming southwest
10 to 15 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt becoming south 15 to 25 kt
in the afternoon. waves 1 to 3 ft building to 2 to 4 ft. 
.friday night...south winds 10 to 20 kt becoming southwest. waves
3 to 5 ft. 
.saturday...southwest winds 10 to 20 kt becoming south to 30 kt.
waves 3 to 5 ft. 
.sunday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 221407
glflm 
expires:202607222115;;411367

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
907 am cdt wed jul 22 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...

gusty northerly winds will remain gradually diminish today as 
high pressure around 30.1 inches will build into the northern 
mississippi river valley from the great plains. the high will 
cross southern lake michigan thursday morning and progress into 
the northeastern united states thursday night into friday. 
progression of the high will result in a south to southwest wind 
shift across the waters.

29.5 inch low pressure will move quickly from the canadian great 
plains toward quebec friday through saturday, maintaining south to
southwest winds over lake michigan. the low will attempt to pull 
a cold front into the western great lakes by sunday, with the 
boundary slowly advancing south across the waters through monday. 
the approaching/passing front will result in returning 
thunderstorm chances saturday night through monday, in addition to
a northerly wind shift by monday afternoon.


lmz261-362-364-366-563-565-567-868-222115-
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-
907 am cdt wed jul 22 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...west winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 1 to 3 ft. 
.thursday night...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.friday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.friday night...south winds 15 to 25 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday...southwest winds to 30 kt becoming south. chance of
showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmqt 221402
glfls 
expires:202607222000;;411061

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed jul 22 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 30.1 inches over the western part of the lake flattens and moves 
east towards new england the rest of today into early friday 
morning. while ridging of around 30.0 inches looks to remain over 
lake superior on thursday, a weak 29.9 to 30.0 inch low could move 
over the northwestern half of the lake by thursday night into friday 
morning. as a low around 29.3 inches lifts from far northern ontario 
into hudson bay friday night into saturday morning, expect troughing 
of around 29.8 inches to move into lake superior in response by 
saturday morning. troughing of at least 29.8 inches looks to remain 
over the lake for the rest of the day. while weak ridging of 29.8 to 
29.9 inches develops over lake superior sunday morning, a 29.6 inch 
low moving in from the west moves over the upper great lakes by 
monday morning. 




lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt wed jul 22 2026 /901 am cdt wed jul 22 2026/

.rest of today...west winds 5 to 15 knots backing southwest in
the afternoon, then increasing to 10 to 20 knots late. waves calm
to 2 feet building to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then becoming southwest 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.thursday night...southwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.friday...southwest winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.friday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. showers likely and a chance of
thunderstorms after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 15 to 25 knots becoming northeast
5 to 15 knots. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 

$$

fzus63 kmqt 221402
glfls 
expires:202607222000;;411062

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed jul 22 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 30.1 inches over the western part of the lake flattens and moves 
east towards new england the rest of today into early friday 
morning. while ridging of around 30.0 inches looks to remain over 
lake superior on thursday, a weak 29.9 to 30.0 inch low could move 
over the northwestern half of the lake by thursday night into friday 
morning. as a low around 29.3 inches lifts from far northern ontario 
into hudson bay friday night into saturday morning, expect troughing 
of around 29.8 inches to move into lake superior in response by 
saturday morning. troughing of at least 29.8 inches looks to remain 
over the lake for the rest of the day. while weak ridging of 29.8 to 
29.9 inches develops over lake superior sunday morning, a 29.6 inch 
low moving in from the west moves over the upper great lakes by 
monday morning. 




lsz263-222000-
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-
1001 am edt wed jul 22 2026

.rest of today...northwest winds 5 to 15 knots backing west in
the afternoon, then becoming southwest 10 to 20 knots late. waves
calm to 2 feet building to 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then increasing to 10 to 20 knots late.
waves subsiding to 1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. a slight chance of thunderstorms
through midnight. a slight chance of showers. waves subsiding to
1 to 3 feet, then building to 2 to 4 feet. 
.friday...southwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 20 to 30 knots veering southwest
after midnight. showers likely and a chance of thunderstorms
after midnight. waves building to 4 to 7 feet occasionally to
9 feet. 
.saturday...southwest winds 20 to 30 knots becoming northeast
5 to 15 knots. a chance of showers. waves subsiding to calm to
2 feet. 
.sunday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 221402
glfls 
expires:202607222000;;411063

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed jul 22 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 30.1 inches over the western part of the lake flattens and moves 
east towards new england the rest of today into early friday 
morning. while ridging of around 30.0 inches looks to remain over 
lake superior on thursday, a weak 29.9 to 30.0 inch low could move 
over the northwestern half of the lake by thursday night into friday 
morning. as a low around 29.3 inches lifts from far northern ontario 
into hudson bay friday night into saturday morning, expect troughing 
of around 29.8 inches to move into lake superior in response by 
saturday morning. troughing of at least 29.8 inches looks to remain 
over the lake for the rest of the day. while weak ridging of 29.8 to 
29.9 inches develops over lake superior sunday morning, a 29.6 inch 
low moving in from the west moves over the upper great lakes by 
monday morning. 




lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt wed jul 22 2026

.rest of today...northwest winds 5 to 15 knots backing west in
the afternoon, then increasing to 10 to 20 knots late. waves 1 to
3 feet subsiding to calm to 2 feet, then building to 1 to 3 feet.
.tonight...west winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots. waves building to
2 to 4 feet. 
.thursday night...southwest winds 10 to 20 knots. a slight chance
of thunderstorms through midnight. a slight chance of showers.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.friday...southwest winds 10 to 20 knots. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 15 to 25 knots veering southwest
after midnight. showers likely and a chance of thunderstorms
after midnight. waves building to 4 to 7 feet occasionally to
9 feet. 
.saturday...southwest winds 15 to 25 knots becoming northeast
5 to 15 knots. a chance of showers. waves subsiding to calm to
2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 221402
glfls 
expires:202607222000;;411064

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed jul 22 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 30.1 inches over the western part of the lake flattens and moves 
east towards new england the rest of today into early friday 
morning. while ridging of around 30.0 inches looks to remain over 
lake superior on thursday, a weak 29.9 to 30.0 inch low could move 
over the northwestern half of the lake by thursday night into friday 
morning. as a low around 29.3 inches lifts from far northern ontario 
into hudson bay friday night into saturday morning, expect troughing 
of around 29.8 inches to move into lake superior in response by 
saturday morning. troughing of at least 29.8 inches looks to remain 
over the lake for the rest of the day. while weak ridging of 29.8 to 
29.9 inches develops over lake superior sunday morning, a 29.6 inch 
low moving in from the west moves over the upper great lakes by 
monday morning. 




lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt wed jul 22 2026

.rest of today...northwest winds 15 to 25 knots becoming west
10 to 20 knots late. waves 1 to 3 feet subsiding to calm to
2 feet. 
.tonight...west winds 10 to 20 knots increasing to 15 to 25 knots
after midnight. waves building to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots becoming southwest 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 1 to 3 feet. 
.friday...southwest winds 10 to 20 knots backing south by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. a chance of showers after
midnight. waves building to 2 to 4 feet. 
.saturday...southwest winds 10 to 20 knots veering north. a
chance of showers. waves subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots veering southeast. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 221402
glfls 
expires:202607222000;;411065

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed jul 22 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 30.1 inches over the western part of the lake flattens and moves 
east towards new england the rest of today into early friday 
morning. while ridging of around 30.0 inches looks to remain over 
lake superior on thursday, a weak 29.9 to 30.0 inch low could move 
over the northwestern half of the lake by thursday night into friday 
morning. as a low around 29.3 inches lifts from far northern ontario 
into hudson bay friday night into saturday morning, expect troughing 
of around 29.8 inches to move into lake superior in response by 
saturday morning. troughing of at least 29.8 inches looks to remain 
over the lake for the rest of the day. while weak ridging of 29.8 to 
29.9 inches develops over lake superior sunday morning, a 29.6 inch 
low moving in from the west moves over the upper great lakes by 
monday morning. 




lsz266-222000-
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-
1001 am edt wed jul 22 2026

.rest of today...northwest winds 15 to 25 knots backing west
late. waves 2 to 4 feet. 
.tonight...west winds 10 to 20 knots increasing to 15 to 25 knots
late. waves subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots backing southwest in the
afternoon. waves building to 2 to 4 feet. 
.thursday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. a slight chance of showers and
thunderstorms after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.friday...southwest winds 10 to 20 knots backing south by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet. 
.friday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 10 to 20 knots becoming north 5 to
15 knots. showers. a chance of thunderstorms. waves subsiding to
calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 221402
glfls 
expires:202607222000;;411066

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed jul 22 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 30.1 inches over the western part of the lake flattens and moves 
east towards new england the rest of today into early friday 
morning. while ridging of around 30.0 inches looks to remain over 
lake superior on thursday, a weak 29.9 to 30.0 inch low could move 
over the northwestern half of the lake by thursday night into friday 
morning. as a low around 29.3 inches lifts from far northern ontario 
into hudson bay friday night into saturday morning, expect troughing 
of around 29.8 inches to move into lake superior in response by 
saturday morning. troughing of at least 29.8 inches looks to remain 
over the lake for the rest of the day. while weak ridging of 29.8 to 
29.9 inches develops over lake superior sunday morning, a 29.6 inch 
low moving in from the west moves over the upper great lakes by 
monday morning. 




lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt wed jul 22 2026

.rest of today...northwest winds 15 to 25 knots backing west
late. waves 3 to 5 feet occasionally to 7 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday night...south winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. a slight chance of showers after
midnight. waves building to 1 to 3 feet. 
.friday...southwest winds 5 to 15 knots backing south by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.saturday...southwest winds 10 to 20 knots veering northwest.
showers. a chance of showers. waves subsiding to calm to 2 feet. 
.sunday...north winds 10 to 20 knots becoming southeast 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$