fzus61 kbuf 240802
glflo 
expires:202607241500;;509917

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri jul 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 30.2 inch high over the lake this morning will 
drift east of the lake today, and linger over new england through 
saturday before weakening and drifting off the east coast sunday. a 
29.5 inch area of low pressure will develop over the western great 
lakes sunday night and move north of the lake monday and tuesday, 
with a cold front slowly easing across the lake tuesday.


loz062-241500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt fri jul 24 2026

.today...southwest winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tonight...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...south winds 10 knots or less becoming east. waves
1 foot or less. 
.saturday night...east winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 10 knots or less. a chance of showers
during the day, then a chance of showers and thunderstorms sunday
night. waves 1 foot or less. 
.monday...southwest winds 10 knots or less. a chance of showers
and thunderstorms during the day, then showers likely with a
chance of thunderstorms monday night. waves 1 foot or less. 
.tuesday...west winds 10 to 15 knots becoming north. showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms tuesday night. waves 1 to
2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 240802
glflo 
expires:202607241500;;509918

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri jul 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 30.2 inch high over the lake this morning will 
drift east of the lake today, and linger over new england through 
saturday before weakening and drifting off the east coast sunday. a 
29.5 inch area of low pressure will develop over the western great 
lakes sunday night and move north of the lake monday and tuesday, 
with a cold front slowly easing across the lake tuesday.


loz063>065-241500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri jul 24 2026

.today...southwest winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.tonight...northeast winds 5 to 10 knots becoming south. waves
1 foot or less. 
.saturday...south winds 5 to 15 knots becoming east less than
10 knots. waves 2 feet or less. 
.saturday night...east winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds 10 knots or less. a chance of showers
and thunderstorms sunday night. waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south. a chance
of showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms monday night. waves 1 foot or
less. 
.tuesday...south winds 5 to 15 knots becoming north. showers
likely with a chance of thunderstorms. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240743
glfle 
expires:202607241415;;509318

open lake forecast for lake erie
national weather service cleveland oh
343 am edt fri jul 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...
high pressure 30.20 inches continues across the region and will 
drift eastward through saturday. sunday, pressure falls to an
average of 29.90 inches as low pressure enters the great lakes 
region. a cold front moves through early tuesday.


lez164>167-241415-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
343 am edt fri jul 24 2026

.today...southeast winds 5 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet. 
.tonight...northeast winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet. 
.saturday...southwest winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...southwest winds 10 knots or less. waves 1 foot
or less. 
.sunday...west winds 5 to 10 knots becoming southwest. a chance
of showers during the day, then a chance of showers and
thunderstorms sunday night. waves 1 foot or less. 
.monday...southwest winds 5 to 15 knots increasing to 15 to
20 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 building to 2 to 4 feet. 
.tuesday...west winds 10 to 15 knots becoming north 15 to
20 knots. a chance of showers and thunderstorms during the day.
waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240743
glfle 
expires:202607241415;;509317

open lake forecast for lake erie
national weather service cleveland oh
343 am edt fri jul 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...
high pressure 30.20 inches continues across the region and will 
drift eastward through saturday. sunday, pressure falls to an
average of 29.90 inches as low pressure enters the great lakes 
region. a cold front moves through early tuesday.


lez162-163-241415-
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-
343 am edt fri jul 24 2026

.today...east winds 10 knots or less. waves 1 foot or less. 
.tonight...east winds 10 knots or less becoming west. waves
2 feet or less. 
.saturday...northwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.saturday night...south winds 5 to 10 knots becoming west. waves
1 foot or less. 
.sunday...west winds 5 to 10 knots becoming southwest. a chance
of showers during the day, then a chance of showers and
thunderstorms sunday night. waves 1 foot or less. 
.monday...southwest winds 10 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 2 feet. 
.tuesday...west winds 10 to 15 knots becoming north. a chance of
showers and thunderstorms during the day. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 240743
glfle 
expires:202607241415;;509319

open lake forecast for lake erie
national weather service cleveland oh
343 am edt fri jul 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...
high pressure 30.20 inches continues across the region and will 
drift eastward through saturday. sunday, pressure falls to an
average of 29.90 inches as low pressure enters the great lakes 
region. a cold front moves through early tuesday.


lez061-168-169-241415-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
343 am edt fri jul 24 2026

.today...southeast winds 10 knots or less becoming northeast
10 to 15 knots. waves 2 feet or less. 
.tonight...northeast winds 5 to 15 knots becoming south. waves
2 feet or less. 
.saturday...south winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.saturday night...southwest winds 10 knots or less. waves 1 foot
or less. 
.sunday...southwest winds 5 to 10 knots. a chance of showers and
thunderstorms sunday night. waves 1 foot or less. 
.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 building to 2 to
4 feet. 
.tuesday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers and thunderstorms during the day. waves 2 to
4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 240741
glflh 
expires:202607241545;;509174

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt fri jul 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...high pressure, 30.10 inches, drifts into the mid-
atlantic today and saturday. winds organize out of the southwest 
saturday ahead of increasing thunderstorm chances late saturday 
night into early next week. 


lhz462>464-241545-
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-
341 am edt fri jul 24 2026

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


$$

fzus63 kdtx 240741
glflh 
expires:202607241545;;509172

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt fri jul 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...high pressure, 30.10 inches, drifts into the mid-
atlantic today and saturday. winds organize out of the southwest 
saturday ahead of increasing thunderstorm chances late saturday 
night into early next week. 


lhz361-241545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
341 am edt fri jul 24 2026

.today...southwest winds 5 to 10 knots in the morning becoming
light and variable...then becoming southeast 5 to 10 knots late
in the afternoon. waves 1 to 3 feet. 
.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable...then becoming south 5 to 10 knots
after midnight. waves 3 to 5 feet subsiding to 1 to 3 feet early
in the morning. 
.saturday...south winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. a chance of showers.
waves 1 to 3 feet. 
.saturday night...light and variable winds. a chance of showers.
waves 1 to 3 feet. 
.sunday...light and variable winds becoming southeast 5 to
10 knots late in the evening. a chance of showers late in the
morning. rain showers likely and a chance of thunderstorms late
in the afternoon. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots veering to the northeast
in the late morning and early afternoon...then veering to the
southeast early in the evening veering to the southwest by
midnight. showers likely and a chance of thunderstorms. waves
2 feet or less building to 2 to 4 feet by midnight. 
.tuesday...north winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then becoming northwest 10 to 15 knots by
midnight. waves 2 to 4 feet. 


$$

fzus63 kdtx 240741
glflh 
expires:202607241545;;509173

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt fri jul 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...high pressure, 30.10 inches, drifts into the mid-
atlantic today and saturday. winds organize out of the southwest 
saturday ahead of increasing thunderstorm chances late saturday 
night into early next week. 


lhz362-363-241545-
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-
341 am edt fri jul 24 2026

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


$$

fzus63 kdtx 240741
glfsc 
expires:202607241545;;509186

lake st clair forecast
national weather service detroit/pontiac mi
341 am edt fri jul 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...high pressure, 30.10 inches, drifts into the mid-
atlantic today and saturday. winds organize out of the southwest 
saturday ahead of increasing thunderstorm chances late saturday 
night into early next week. 


lcz460-241545-
lake st clair-
341 am edt fri jul 24 2026

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

$$

fzus63 kmkx 240637
glflm 
expires:202607241515;;506641

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
137 am cdt fri jul 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...

south to southwest winds are expected to gradually weaken 
overnight, as high pressure around 30.2 inches remains to the 
southeast. south winds will increase across the lake today, as 
high pressure moves further to the east. low pressure around 29.5 
inches will move quickly east from the canadian great plains 
toward quebec through saturday, maintaining gusty south to 
southwest winds. southerly gusts up to 30 knots are expected over 
the north half of the lake. the low will pull a cold front into 
the western great lakes on saturday, with the boundary slowly 
advancing southeast across the region saturday night. this will 
result in increasing thunderstorm chances across the northern two 
thirds of the lake. the front then becomes stationary through the 
middle of next week, with switches between northerly and southerly
winds possible at times. additional rounds of storms are 
possible, and some may become severe.


lmz261-362-364-366-563-565-567-868-241515-
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-
137 am cdt fri jul 24 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 10 to 15 kt becoming south 15 to 25 kt.
waves 1 to 3 ft building to 2 to 4 ft. 
.tonight...south winds 15 to 25 kt becoming southwest. 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 diminishing to
10 to 15 kt overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of showers and thunderstorms. waves 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt becoming west. chance of
showers and thunderstorms. waves 3 to 5 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
2 to 4 ft.  

$$

fzus63 kmkx 240637
glflm 
expires:202607241515;;506642

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
137 am cdt fri jul 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...

south to southwest winds are expected to gradually weaken 
overnight, as high pressure around 30.2 inches remains to the 
southeast. south winds will increase across the lake today, as 
high pressure moves further to the east. low pressure around 29.5 
inches will move quickly east from the canadian great plains 
toward quebec through saturday, maintaining gusty south to 
southwest winds. southerly gusts up to 30 knots are expected over 
the north half of the lake. the low will pull a cold front into 
the western great lakes on saturday, with the boundary slowly 
advancing southeast across the region saturday night. this will 
result in increasing thunderstorm chances across the northern two 
thirds of the lake. the front then becomes stationary through the 
middle of next week, with switches between northerly and southerly
winds possible at times. additional rounds of storms are 
possible, and some may become severe.


lmz080-669-671-673-675-777-779-870-872-874-876-878-241515-
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-
137 am cdt fri jul 24 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 5 to 10 kt becoming south late this
morning, then becoming 10 to 20 kt early this afternoon becoming
south 10 to 20 kt late. waves 1 to 2 ft building to 2 to 4 ft. 
.tonight...south winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 2 to 4 ft. 
.saturday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. waves 2 to 4 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest
10 to 15 kt. waves 2 to 4 ft. 
.sunday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. chance of showers and thunderstorms. waves 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt. chance of showers and
thunderstorms. waves 3 to 5 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 240802
glfls 
expires:202607242000;;509843

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri jul 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... 

30.0 inch remnant ridging over lake superior today gives way to 29.8 
inch troughing tonight as a parent 29.3 inch low tracks across 
hudson bay tonight. weak ridging of around 29.9 inches develops over 
lake superior saturday afternoon before weakening further to 29.8 
inches by sunday morning. a 29.6 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before leaving east 
towards the st. lawrence seaway at 29.4 inches on tuesday. behind 
the clipper, weak ridging of at least 29.8 inches returns to lake 
superior on tuesday, increasing to at least 29.9 inches by wednesday 
morning.




lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri jul 24 2026 /301 am cdt fri jul 24 2026/

.early this morning...southwest winds 10 to 20 knots. waves 1 to
3 feet. 
.today...southwest winds 10 to 20 knots backing south late. waves
subsiding to calm to 2 feet. 
.tonight...south winds 15 to 25 knots veering southwest after
midnight. a chance of showers and thunderstorms. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.saturday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds 5 to 15 knots veering northeast
after midnight. a slight chance of showers after midnight. waves
calm to 2 feet. 
.sunday...east winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots backing northeast after
midnight. a chance of showers. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing north. a chance
of showers. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots backing north. waves
calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202607242000;;509844

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri jul 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... 

30.0 inch remnant ridging over lake superior today gives way to 29.8 
inch troughing tonight as a parent 29.3 inch low tracks across 
hudson bay tonight. weak ridging of around 29.9 inches develops over 
lake superior saturday afternoon before weakening further to 29.8 
inches by sunday morning. a 29.6 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before leaving east 
towards the st. lawrence seaway at 29.4 inches on tuesday. behind 
the clipper, weak ridging of at least 29.8 inches returns to lake 
superior on tuesday, increasing to at least 29.9 inches by wednesday 
morning.




lsz263-242000-
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-
401 am edt fri jul 24 2026

.early this morning...southwest winds 10 to 20 knots. waves 2 to
4 feet. 
.today...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then becoming south 10 to 20 knots
late. waves subsiding to 1 to 3 feet. 
.tonight...southwest winds 15 to 25 knots. a chance of showers
and thunderstorms. waves building to 3 to 6 feet occasionally to
8 feet. 
.saturday...southwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.saturday night...south winds 5 to 15 knots becoming east less
than 10 knots after midnight. waves calm to 2 feet. 
.sunday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots backing northeast after
midnight. a chance of showers. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing north. a chance
of showers. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots becoming north less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202607242000;;509845

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri jul 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... 

30.0 inch remnant ridging over lake superior today gives way to 29.8 
inch troughing tonight as a parent 29.3 inch low tracks across 
hudson bay tonight. weak ridging of around 29.9 inches develops over 
lake superior saturday afternoon before weakening further to 29.8 
inches by sunday morning. a 29.6 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before leaving east 
towards the st. lawrence seaway at 29.4 inches on tuesday. behind 
the clipper, weak ridging of at least 29.8 inches returns to lake 
superior on tuesday, increasing to at least 29.9 inches by wednesday 
morning.




lsz264-242000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri jul 24 2026

.early this morning...southwest winds 10 to 20 knots. waves 2 to
4 feet. 
.today...southwest winds 10 to 20 knots backing south late. waves
subsiding to 1 to 3 feet. 
.tonight...south winds 10 to 20 knots becoming southwest 15 to
25 knots after midnight. a chance of showers through midnight. a
chance of thunderstorms. showers likely 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 in the afternoon, then becoming southwest 5 to 15 knots
late. a slight chance of showers and thunderstorms through early
afternoon. waves subsiding to 1 to 3 feet. 
.saturday night...south winds 5 to 15 knots becoming east less
than 10 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering southeast by mid
afternoon. waves calm to 2 feet. 
.sunday night...east winds less than 10 knots backing northeast
after midnight. a chance of showers. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots backing north. a chance of
thunderstorms. a chance of showers. waves calm to 2 feet. 
.tuesday...north winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 240802
glfls 
expires:202607242000;;509846

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri jul 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... 

30.0 inch remnant ridging over lake superior today gives way to 29.8 
inch troughing tonight as a parent 29.3 inch low tracks across 
hudson bay tonight. weak ridging of around 29.9 inches develops over 
lake superior saturday afternoon before weakening further to 29.8 
inches by sunday morning. a 29.6 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before leaving east 
towards the st. lawrence seaway at 29.4 inches on tuesday. behind 
the clipper, weak ridging of at least 29.8 inches returns to lake 
superior on tuesday, increasing to at least 29.9 inches by wednesday 
morning.




lsz265-242000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri jul 24 2026

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

$$

fzus63 kmqt 240802
glfls 
expires:202607242000;;509847

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri jul 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... 

30.0 inch remnant ridging over lake superior today gives way to 29.8 
inch troughing tonight as a parent 29.3 inch low tracks across 
hudson bay tonight. weak ridging of around 29.9 inches develops over 
lake superior saturday afternoon before weakening further to 29.8 
inches by sunday morning. a 29.6 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before leaving east 
towards the st. lawrence seaway at 29.4 inches on tuesday. behind 
the clipper, weak ridging of at least 29.8 inches returns to lake 
superior on tuesday, increasing to at least 29.9 inches by wednesday 
morning.




lsz266-242000-
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-
401 am edt fri jul 24 2026

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

$$

fzus63 kmqt 240802
glfls 
expires:202607242000;;509848

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri jul 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... 

30.0 inch remnant ridging over lake superior today gives way to 29.8 
inch troughing tonight as a parent 29.3 inch low tracks across 
hudson bay tonight. weak ridging of around 29.9 inches develops over 
lake superior saturday afternoon before weakening further to 29.8 
inches by sunday morning. a 29.6 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before leaving east 
towards the st. lawrence seaway at 29.4 inches on tuesday. behind 
the clipper, weak ridging of at least 29.8 inches returns to lake 
superior on tuesday, increasing to at least 29.9 inches by wednesday 
morning.




lsz267-242000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri jul 24 2026

.early this morning...southwest winds 10 to 20 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.today...southwest winds 5 to 15 knots backing southeast late.
waves calm to 2 feet. 
.tonight...south winds 15 to 25 knots. a slight chance of showers
after midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.saturday...south winds 15 to 25 knots becoming southwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. a chance of showers and a slight chance of thunderstorms.
waves subsiding to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots backing south
after midnight. a slight chance of showers through midnight.
waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots. a chance of showers by
mid afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots becoming east 10 to
20 knots after midnight. a chance of showers. waves calm to
2 feet. 
.monday...north winds 5 to 15 knots increasing to 10 to 20 knots.
a chance of showers and thunderstorms. waves calm to 2 feet. 
.tuesday...northwest winds 10 to 20 knots becoming north 5 to
15 knots. waves calm to 2 feet. 

$$