fzus61 kbuf 080203
glflo 
expires:202608080900;;801997

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt fri aug 7 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 high pressure ridge averaging 30.0 inches exits 
eastward before a cold front sweeps eastward across lake ontario 
saturday night. behind the front, a ridge averaging 30.1 inches 
builds from the western great lakes through sunday. this ridge 
begins to exit eastward sunday night and another cold front should 
sweep eastward across lake ontario monday night. behind the front, a 
trough averaging 29.8 inches should linger over the eastern great 
lakes through this wednesday.


loz062-080900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt fri aug 7 2026

.overnight...southeast winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.saturday...southwest winds 5 to 15 knots. a chance of showers
late in the morning. waves 2 feet or less. 
.saturday night...southwest winds 10 to 15 knots becoming west. a
chance of showers and thunderstorms in the evening. waves 1 to
2 feet. 
.sunday...west winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.sunday night...southwest winds 5 to 10 knots becoming south.
waves 2 feet or less. 
.monday...southwest winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms. waves 1 to 2 feet. 
.tuesday...west winds 10 knots or less becoming northwest.
showers likely during the day, then a chance of showers tuesday
night. waves 1 foot or less. 
.wednesday...northwest winds 10 knots or less becoming west.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 080203
glflo 
expires:202608080900;;801998

open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt fri aug 7 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 high pressure ridge averaging 30.0 inches exits 
eastward before a cold front sweeps eastward across lake ontario 
saturday night. behind the front, a ridge averaging 30.1 inches 
builds from the western great lakes through sunday. this ridge 
begins to exit eastward sunday night and another cold front should 
sweep eastward across lake ontario monday night. behind the front, a 
trough averaging 29.8 inches should linger over the eastern great 
lakes through this wednesday.


loz063>065-080900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt fri aug 7 2026

.overnight...southeast winds less than 10 knots becoming
south. a chance of showers. waves 1 foot or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
late in the morning. a chance of showers and thunderstorms in the
afternoon. waves 2 feet or less. 
.saturday night...southwest winds 5 to 15 knots becoming west. a
chance of showers. waves 2 feet or less building to 2 to 3 feet. 
.sunday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.monday...south winds 5 to 10 knots becoming west. 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 5 to 10 knots becoming northwest. a chance
of showers. waves 2 feet or less. 
.wednesday...northwest winds 5 to 10 knots becoming west. a
chance of showers wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080152
glfle 
expires:202608080815;;801635

open lake forecast for lake erie
national weather service cleveland oh
952 pm edt fri aug 7 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 cold front east across lake erie saturday evening and night. a 
ridge averaging 30.10 inches will briefly build over the region on
sunday before low pressure 30.00 inches lifts from the central 
plains into the lower great lakes region on monday. a stationary 
boundary will linger in the vicinity of lake erie through mid- 
week.


lez165>167-080815-
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-
952 pm edt fri aug 7 2026

.overnight...south winds 5 to 15 knots becoming southwest.
a chance of showers and thunderstorms. showers
likely with a chance of thunderstorms late. waves 1 to 3 feet. 
.saturday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms early, then a slight chance of showers and
thunderstorms late in the morning. a slight chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.saturday night...west winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.sunday...north winds 10 knots or less becoming southwest. waves
2 feet or less. 
.sunday night...south winds 10 knots or less becoming southwest
and increasing to 15 to 20 knots overnight. showers likely
overnight. waves 2 feet or less. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms during the day,
then showers with a chance of thunderstorms monday night. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots becoming west. a chance
of showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms tuesday night. waves 1 to 3 feet. 
.wednesday...northwest winds 5 to 10 knots becoming north. a
chance of showers during the day, then a chance of showers and
thunderstorms wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080152
glfle 
expires:202608080815;;801636

open lake forecast for lake erie
national weather service cleveland oh
952 pm edt fri aug 7 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 cold front east across lake erie saturday evening and night. a 
ridge averaging 30.10 inches will briefly build over the region on
sunday before low pressure 30.00 inches lifts from the central 
plains into the lower great lakes region on monday. a stationary 
boundary will linger in the vicinity of lake erie through mid- 
week.


lez061-168-169-080815-
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-
952 pm edt fri aug 7 2026

.overnight...south winds 5 to 15 knots becoming southwest.
a slight chance of showers and thunderstorms. a
chance of showers and thunderstorms late. waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms early, then a chance of showers and
thunderstorms late in the morning. a slight chance of showers and
thunderstorms early in the afternoon. waves 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots becoming north. a
chance of showers overnight. waves 1 to 3 feet. 
.sunday...north winds 10 knots or less becoming west. waves
2 feet or less. 
.sunday night...south winds 10 knots or less becoming southwest
10 to 15 knots. a chance of showers overnight. waves 2 feet or
less. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers and thunderstorms during the day,
then showers with a chance of thunderstorms monday night. waves
2 to 4 feet. 
.tuesday...west winds 5 to 15 knots becoming northwest. showers
likely with a chance of thunderstorms during the day, then a
chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...northwest winds 10 knots or less becoming north. a
chance of showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080152
glfle 
expires:202608080815;;801634

open lake forecast for lake erie
national weather service cleveland oh
952 pm edt fri aug 7 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 cold front east across lake erie saturday evening and night. a 
ridge averaging 30.10 inches will briefly build over the region on
sunday before low pressure 30.00 inches lifts from the central 
plains into the lower great lakes region on monday. a stationary 
boundary will linger in the vicinity of lake erie through mid- 
week.


lez162>164-080815-
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-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
952 pm edt fri aug 7 2026

.overnight...south winds 5 to 15 knots becoming southwest.
a chance of showers with a slight chance of thunderstorms.
waves 2 feet or less. 
.saturday...southwest winds 10 to 15 knots. a slight chance of
showers and thunderstorms early. a slight chance of showers and
thunderstorms in the afternoon. waves 1 to 2 feet. 
.saturday night...west winds 5 to 10 knots becoming northwest.
waves 1 to 2 feet. 
.sunday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.sunday night...south winds 5 to 15 knots becoming southwest. a
chance of showers in the evening, then showers likely overnight.
waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots. showers with a chance
of thunderstorms. waves 1 to 2 feet. 
.tuesday...west winds 5 to 15 knots. showers likely with a chance
of thunderstorms. waves 2 feet or less. 
.wednesday...northwest winds 5 to 10 knots becoming north. a
chance of showers and thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 080301
glflh 
expires:202608081115;;803784

open lake forecast for lake huron
national weather service detroit/pontiac mi
1101 pm edt fri aug 7 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lhz462>464-081115-
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-
1101 pm edt fri aug 7 2026

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


$$

fzus63 kdtx 080301
glfsc 
expires:202608081115;;803797

lake st clair forecast
national weather service detroit/pontiac mi
1101 pm edt fri aug 7 2026

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lcz460-081115-
lake st clair-
1101 pm edt fri aug 7 2026

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

$$

fzus63 kdtx 080301
glflh 
expires:202608081115;;803782

open lake forecast for lake huron
national weather service detroit/pontiac mi
1101 pm edt fri aug 7 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lhz361-081115-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1101 pm edt fri aug 7 2026

.rest of tonight...south winds 5 to 10 knots. a chance of
showers. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.saturday night...west winds 10 to 15 knots early in the evening
becoming light and variable...then becoming southwest 5 to
10 knots after midnight. waves 1 to 3 feet. 
.sunday...south winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...light and variable winds. a chance of showers.
waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.tuesday...light and variable winds becoming west 5 to 10 knots .
waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots early in the morning
becoming light and variable...then becoming west 5 to 10 knots .
waves 2 feet or less. 


$$

fzus63 kdtx 080301
glflh 
expires:202608081115;;803783

open lake forecast for lake huron
national weather service detroit/pontiac mi
1101 pm edt fri aug 7 2026

for waters beyond five nautical miles off shore on lake huron

waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.synopsis...light southerly flow will continue through the
overnight out ahead of a cold front which passes through on
saturday. winds shift to the northwest and briefly top out at or
above 20 knots over northern lake huron saturday afternoon into
the evening. high pressure, 30.00 inches, slides east through the
ohio valley saturday night, allowing winds to become southerly
once again for sunday.


lhz362-363-081115-
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-
1101 pm edt fri aug 7 2026

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


$$

fzus63 kmkx 080152
glflm 
expires:202608080930;;801629

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cdt fri aug 7 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...

low pressure of 29.8 inches over lake superior this evening will
move east toward lake ontario. an associated cold front will move
east across the lake tonight with scattered showers and storms
possible. west to northwest winds behind the front early saturday
will quickly return to southerly by saturday evening ahead of the
next approaching low pressure system. an unsettled weather 
pattern will set up over the upper great lakes next week where 
weak waves of low pressure will cross the region and produce 
rounds of thunderstorms at times.


lmz261-362-364-366-563-565-567-868-080930-
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-
852 pm cdt fri aug 7 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds 15 to 25 kt becoming west 10 to
20 kt. chance of showers and thunderstorms through early evening,
then chance of showers and slight chance of thunderstorms
overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt backing to southwest.
patchy dense fog in the morning. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.saturday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.sunday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers in the afternoon. waves 1 to 3 ft building to
3 to 5 ft. 
.sunday night...southwest winds 10 to 20 kt veering to northwest
5 to 10 kt overnight. chance of showers. waves 3 to 5 ft. 
.monday...north winds 10 to 20 kt veering to south. waves 1 to
3 ft. 
.monday night...south winds 10 to 15 kt backing to northeast.
waves 1 to 2 ft. 
.tuesday...northeast winds 10 to 15 kt becoming north. chance of
showers. waves 1 ft or less. 
.wednesday...northwest winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 080152
glflm 
expires:202608080930;;801630

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
852 pm cdt fri aug 7 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...

low pressure of 29.8 inches over lake superior this evening will
move east toward lake ontario. an associated cold front will move
east across the lake tonight with scattered showers and storms
possible. west to northwest winds behind the front early saturday
will quickly return to southerly by saturday evening ahead of the
next approaching low pressure system. an unsettled weather 
pattern will set up over the upper great lakes next week where 
weak waves of low pressure will cross the region and produce 
rounds of thunderstorms at times.


lmz080-669-671-673-675-777-779-870-872-874-876-878-080930-
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-
852 pm cdt fri aug 7 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 10 to 20 kt becoming west. waves
2 to 4 ft. 
.saturday...west winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...south winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 to 2 ft. 
.sunday...south winds 10 to 20 kt. chance of showers. waves 3 to
5 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. showers likely with a chance of thunderstorms. waves 3 to
5 ft subsiding to 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt becoming south. chance of
showers and thunderstorms. waves 1 to 3 ft. 
.monday night...southeast winds 10 to 20 kt backing to north
10 to 15 kt. showers likely with a chance of thunderstorms. waves
1 to 2 ft. 
.tuesday...northeast winds 10 to 15 kt becoming north. chance of
showers. waves 1 to 2 ft. 
.wednesday...northeast winds 5 to 10 kt becoming north 10 to
20 kt. waves 1 ft or less.  

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801943

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz266-080800-
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-
1002 pm edt fri aug 7 2026

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

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801944

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz267-080800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1002 pm edt fri aug 7 2026

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

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801939

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 pm edt fri aug 7 2026 /902 pm cdt fri aug 7 2026/

.rest of tonight...northwest winds 10 to 20 knots backing west
late. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. a chance of showers and a slight chance of
thunderstorms. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering north. waves calm
to 2 feet. 

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801941

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz264-080800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1002 pm edt fri aug 7 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
late. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing southwest late. waves building to
1 to 3 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a chance of showers after midnight.
waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southwest winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801940

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz263-080800-
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-
1002 pm edt fri aug 7 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
after midnight, then backing west late. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight, then backing southwest late. a
chance of showers. a slight chance of thunderstorms after
midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801942

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt fri aug 7 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 passing cold front brings 29.8 inch troughing to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz265-080800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1002 pm edt fri aug 7 2026

.rest of tonight...southwest winds 10 to 20 knots veering west
after midnight, then increasing to 15 to 25 knots late. a chance
of showers and a slight chance of thunderstorms by midnight.
waves calm to 2 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
15 to 25 knots late. a chance of showers and a slight chance of
thunderstorms after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.sunday night...south winds 5 to 15 knots veering west after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$