fzus61 kbuf 222003
glflo 
expires:202607230300;;426612

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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 29.3 inch low over northern quebec tonight will move 
northeast and into the north atlantic by thursday night. meanwhile, 
a 30.2 inch high will build into the upper great lakes tonight, then 
move east across the lower great lakes thursday. this high will 
linger from the lower great lakes to new england friday through 
saturday before weakening and drifting off the east coast sunday.


loz063>065-230300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed jul 22 2026

.tonight...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 4 to 7 feet subsiding to 1 to 2 feet. waves
occasionally around 9 feet. 
.thursday...west winds 5 to 15 knots. waves 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.friday...south winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.friday night...east winds 10 knots or less becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots becoming west 10 knots or
less. a chance of showers and thunderstorms. waves 2 feet or
less. 
.monday...west winds 10 knots or less becoming south. a chance of
showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 222003
glflo 
expires:202607230300;;426611

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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 29.3 inch low over northern quebec tonight will move 
northeast and into the north atlantic by thursday night. meanwhile, 
a 30.2 inch high will build into the upper great lakes tonight, then 
move east across the lower great lakes thursday. this high will 
linger from the lower great lakes to new england friday through 
saturday before weakening and drifting off the east coast sunday.


loz062-230300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed jul 22 2026

.tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.thursday...west winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.thursday night...southwest winds 5 to 10 knots. waves 1 foot or
less. 
.friday...southwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.friday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.saturday...south winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.sunday...southwest winds 5 to 10 knots becoming northwest. a
chance of showers and thunderstorms. waves 1 foot or less. 
.monday...west winds 5 to 10 knots becoming southwest. a chance
of showers and thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221945
glfle 
expires:202607230215;;426043

open lake forecast for lake erie
national weather service cleveland oh
345 pm 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 eastern 
great lakes through this evening. high pressure 30.20 inches
builds into the region tonight and will slowly build to the east
through saturday. a trough averaging 29.90 inches will move
across lake erie on sunday and persist into monday. 


lez164>166-230215-
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-
345 pm edt wed jul 22 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221945
glfle 
expires:202607230215;;426044

open lake forecast for lake erie
national weather service cleveland oh
345 pm 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 eastern 
great lakes through this evening. high pressure 30.20 inches
builds into the region tonight and will slowly build to the east
through saturday. a trough averaging 29.90 inches will move
across lake erie on sunday and persist into monday. 


lez061-167>169-230215-
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-
345 pm edt wed jul 22 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 221945
glfle 
expires:202607230215;;426042

open lake forecast for lake erie
national weather service cleveland oh
345 pm 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 eastern 
great lakes through this evening. high pressure 30.20 inches
builds into the region tonight and will slowly build to the east
through saturday. a trough averaging 29.90 inches will move
across lake erie on sunday and persist into monday. 


lez162-163-230215-
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-
345 pm edt wed jul 22 2026

.tonight...northwest winds 5 to 10 knots becoming north. a slight
chance of waterspouts late. waves 1 foot or less. 
.thursday...north winds 10 knots or less becoming east. a slight
chance of waterspouts early. waves 1 foot or less. 
.thursday night...southeast winds 10 knots or less becoming
south. waves 1 foot or less. 
.friday...south winds 10 knots or less becoming east. waves
1 foot or less. 
.friday night...east winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.saturday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.sunday...west winds 5 to 10 knots. a chance of showers and
thunderstorms. waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots becoming west. a chance
of showers and thunderstorms. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 221946
glfsc 
expires:202607230400;;426108

lake st clair forecast
national weather service detroit/pontiac mi
346 pm 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, 30.10 inches, over minnesota, will
slowly track east through the southern great lakes over the next
couple of days. dry weather and generally light winds can be
expected for thursday and friday.


lcz460-230400-
lake st clair-
346 pm edt wed jul 22 2026

.tonight...north winds 10 to 15 knots. partly cloudy in the 
evening then clearing. waves 2 feet or less.
.thursday...north winds 5 to 10 knots in the morning becoming light
and variable. sunny. waves 2 feet or less.
.thursday night...southeast winds 5 to 10 knots becoming light and
variable. mostly clear. waves 2 feet or less.
.friday...light and variable winds becoming southeast 5 to 10 knots
early in the afternoon. mostly sunny. waves 2 feet or less.
.friday night...southeast winds 5 to 10 knots becoming light and
variable. clear. waves 2 feet or less.
.saturday...light and variable winds becoming south 5 to 10 knots in
the afternoon and evening. mostly clear. waves 2 feet or less.
.sunday...east winds 5 to 10 knots. mostly clear. a chance of
showers and thunderstorms. waves 2 feet or less.
.monday...southwest winds 10 to 15 knots. partly cloudy. a chance of
showers and thunderstorms. waves 2 feet or less.

$$

fzus63 kdtx 221946
glflh 
expires:202607230400;;426046

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm 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, 30.10 inches, over minnesota, will
slowly track east through the southern great lakes over the next
couple of days. dry weather and generally light winds can be
expected for thursday and friday.


lhz361-230400-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
346 pm edt wed jul 22 2026

.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...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet late in the afternoon. 
.thursday night...southwest winds 5 to 10 knots increasing to
10 to 15 knots after midnight. waves 1 to 3 feet. 
.friday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the southeast early in the afternoon. waves 1 to 3 feet. 
.friday night...east winds 5 to 10 knots veering to the south by
midnight...then increasing to 10 to 15 knots after midnight.
waves 3 to 5 feet subsiding to 2 to 4 feet after midnight. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the west late in
the evening. a chance of showers. waves 1 to 3 feet. 
.sunday...west winds 5 to 10 knots. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then veering to the west by
midnight. a chance of showers and thunderstorms...then a chance
of showers by midnight. waves 1 to 3 feet. 


$$

fzus63 kdtx 221946
glflh 
expires:202607230400;;426047

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm 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, 30.10 inches, over minnesota, will
slowly track east through the southern great lakes over the next
couple of days. dry weather and generally light winds can be
expected for thursday and friday.


lhz362-363-230400-
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-
346 pm edt wed jul 22 2026

.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 5 to 7 feet subsiding to 2 to 4 feet early in
the morning. waves occasionally around 10 feet. 
.thursday...west winds 5 to 10 knots backing to the south in the
afternoon. waves 1 to 3 feet. 
.thursday night...south winds 10 to 15 knots becoming southwest
5 to 10 knots in the late evening and overnight. waves 1 to
3 feet. 
.friday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the afternoon. waves 2 feet or less building to
2 to 4 feet early in the afternoon. 
.friday night...south winds 10 to 15 knots. waves 2 to 4 feet. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
late in the evening. a chance of showers late in the afternoon. a
chance of showers and thunderstorms late in the evening. waves
1 to 3 feet building to 2 to 4 feet. 
.sunday...west winds 5 to 10 knots. showers likely and a chance
of thunderstorms early in the morning. a chance of showers by
midnight. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots backing to the southeast
early in the evening...then becoming northeast 10 to 15 knots by
midnight. a chance of showers. waves 1 to 3 feet. 


$$

fzus63 kdtx 221946
glflh 
expires:202607230400;;426048

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 pm 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, 30.10 inches, over minnesota, will
slowly track east through the southern great lakes over the next
couple of days. dry weather and generally light winds can be
expected for thursday and friday.


lhz462>464-230400-
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-
346 pm edt wed jul 22 2026

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


$$

fzus63 kmkx 221953
glflm 
expires:202607230315;;426263

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm 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...

light and variable winds are expected tonight into thursday as high
pressure around 30.1 inches crosses wisconsin and southern lake
michigan. look for southerly winds to develop by friday as the
high progresses into the northeastern united states. a 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 on saturday, 
with the boundary slowly advancing south across the waters 
through saturday night, which will result in returning 
thunderstorm chances. a stationary front is expected to sit 
across lake michigan through the middle of next week, so there 
will be switches between northerly and southerly winds at times.
this front will be the focus for several rounds of
thunderstorms, possibly severe. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-230315-
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-
253 pm cdt wed jul 22 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northwest 10 to 15 kt
late this evening, then diminishing to 5 to 10 kt after midnight
and becoming northwest 5 to 10 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 2 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 3 to 5 ft. 
.friday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.saturday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 3 to 5 ft. 
.saturday night...southwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 3 to 5 ft. 
.sunday...northwest winds 10 to 20 kt veering to northeast 15 to
25 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 221953
glflm 
expires:202607230315;;426262

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm 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...

light and variable winds are expected tonight into thursday as high
pressure around 30.1 inches crosses wisconsin and southern lake
michigan. look for southerly winds to develop by friday as the
high progresses into the northeastern united states. a 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 on saturday, 
with the boundary slowly advancing south across the waters 
through saturday night, which will result in returning 
thunderstorm chances. a stationary front is expected to sit 
across lake michigan through the middle of next week, so there 
will be switches between northerly and southerly winds at times.
this front will be the focus for several rounds of
thunderstorms, possibly severe. 


lmz261-362-364-366-563-565-567-868-230315-
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-
253 pm cdt wed jul 22 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 10 to 20 kt. waves 2 to 4 ft subsiding to
1 to 3 ft. 
.thursday...west winds 10 to 20 kt increasing to 15 to 25 kt late
in the morning, then becoming southwest early in the afternoon. 
waves 2 to 4 ft. 
.thursday night...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.friday...southwest winds 10 to 20 kt becoming south to 30 kt in
the afternoon. waves 2 to 4 ft building to 3 to 5 ft. 
.friday night...south winds to 30 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday...southwest winds to 30 kt becoming south. waves 4 to
6 ft occasionally to 8 ft. 
.saturday night...southwest winds to 30 kt veering to northwest
10 to 20 kt. chance of showers. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft. 
.sunday...north winds 10 to 15 kt backing to west 15 to 25 kt.
waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmqt 222001
glfls 
expires:202607230800;;426511

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 inch high pressure will continue to move through the midwest 
through 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. 




lsz264-230800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt wed jul 22 2026

.late this afternoon...west winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.tonight...west winds 10 to 20 knots increasing to 15 to 25 knots
late. waves building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots. a slight chance of
showers by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.thursday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots late. a chance of showers and a slight chance of
thunderstorms through midnight. 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
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday night...south winds 20 to 30 knots veering southwest
after midnight. showers after midnight. waves building to 4 to
7 feet occasionally to 9 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. a chance of showers through early
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...north winds 5 to 15 knots becoming northeast
less than 10 knots after midnight. waves subsiding to calm to
2 feet. 
.sunday...southeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots veering north. waves calm
to 2 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202607230800;;426512

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 inch high pressure will continue to move through the midwest 
through 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. 




lsz265-230800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt wed jul 22 2026

.late this afternoon...west winds 15 to 25 knots. waves calm to
2 feet. 
.tonight...west winds 15 to 25 knots increasing to 20 to 30 knots
late. waves building to 1 to 3 feet. 
.thursday...west winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. 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 15 to 25 knots becoming south 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 15 to 25 knots becoming southwest
gales to 35 knots after midnight. a chance of showers after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. showers likely through early
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots becoming south 10 to 20 knots.
a chance of showers and thunderstorms. waves calm to 2 feet. 
.monday...north winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202607230800;;426509

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 inch high pressure will continue to move through the midwest 
through 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. 




lsz162-230800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt wed jul 22 2026 /300 pm cdt wed jul 22 2026/

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

$$

fzus63 kmqt 222001
glfls 
expires:202607230800;;426514

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 inch high pressure will continue to move through the midwest 
through 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. 




lsz267-230800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt wed jul 22 2026

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

$$

fzus63 kmqt 222001
glfls 
expires:202607230800;;426513

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 inch high pressure will continue to move through the midwest 
through 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. 




lsz266-230800-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 pm edt wed jul 22 2026

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

$$

fzus63 kmqt 222001
glfls 
expires:202607230800;;426510

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 inch high pressure will continue to move through the midwest 
through 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. 




lsz263-230800-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 pm edt wed jul 22 2026

.late this afternoon...southwest winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...southwest winds 15 to 25 knots becoming west 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding 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 showers through
midnight. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.friday...southwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday night...southwest winds 20 to 30 knots. showers after
midnight. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.saturday...southwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. a chance of showers through early
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast. a chance of
showers. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$