fzus61 kbuf 080803
glflo 
expires:202608081500;;816225

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt sat aug 8 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 29.7 inch low will send a cold front eastward across 
lake ontario tonight. 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>065-081500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt sat aug 8 2026

.today...southwest winds 10 knots or less becoming south. a
chance of showers late this morning. a chance of showers and
thunderstorms this afternoon. waves 1 foot or less. 
.tonight...south winds 5 to 10 knots becoming west. a chance of
showers and thunderstorms early, then a chance of showers. waves
2 feet or less. 
.sunday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots becoming south. waves
2 feet or less. 
.monday...south winds 5 to 10 knots becoming west. showers likely
with a chance of thunderstorms. waves 2 feet or less. 
.tuesday...west winds 5 to 10 knots. a chance of showers during
the day. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots. a chance of showers
wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 080803
glflo 
expires:202608081500;;816224

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt sat aug 8 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 29.7 inch low will send a cold front eastward across 
lake ontario tonight. 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.


loz062-081500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt sat aug 8 2026

.today...southwest winds 10 knots or less increasing to 10 to
15 knots. patchy dense fog early. a chance of showers through
early afternoon, then a chance of showers and thunderstorms late.
waves 2 feet or less. 
.tonight...southwest winds 5 to 10 knots becoming west. a chance
of showers and thunderstorms early. waves 2 feet or less. 
.sunday...northwest winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.sunday night...southwest winds 5 to 10 knots. a chance of
showers overnight. waves 1 foot or less. 
.monday...southwest winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms monday night. waves 2 feet or
less. 
.tuesday...west winds 5 to 10 knots becoming northwest. a chance
of showers during the day. waves 1 foot or less. 
.wednesday...west winds 5 to 10 knots. a chance of showers
wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080905
glfle 
expires:202608081445;;818897

open lake forecast for lake erie
national weather service cleveland oh
505 am edt sat aug 8 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 is moving through the great lakes today and will
cross the lake tonight. a ridge averaging 30.00 inches will 
build over the region for sunday. a series of weak low pressure
systems 29.90 inches will move through the region sunday night
through tuesday. high pressure 30.00 inches will build into the
region for wednesday.


lez165>167-081445-
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-
505 am edt sat aug 8 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080905
glfle 
expires:202608081445;;818896

open lake forecast for lake erie
national weather service cleveland oh
505 am edt sat aug 8 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 is moving through the great lakes today and will
cross the lake tonight. a ridge averaging 30.00 inches will 
build over the region for sunday. a series of weak low pressure
systems 29.90 inches will move through the region sunday night
through tuesday. high pressure 30.00 inches will build into the
region for wednesday.


lez162>164-081445-
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-
505 am edt sat aug 8 2026

.today...southwest winds 10 to 15 knots. a slight chance of
showers and thunderstorms early. a slight chance of showers and
thunderstorms this afternoon. waves 1 to 2 feet. 
.tonight...west winds 5 to 15 knots becoming north. waves 1 to
2 feet. 
.sunday...northeast 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 with a
chance of thunderstorms overnight. waves 2 feet or less. 
.monday...southwest winds 10 to 15 knots becoming west. showers
with a chance of thunderstorms. waves 1 to 3 feet. 
.tuesday...west winds 5 to 15 knots becoming northeast. showers
likely with a chance of thunderstorms during the day, then
showers likely tuesday night. waves 2 feet or less. 
.wednesday...southeast winds 10 knots or less becoming west. a
chance of showers and thunderstorms during the day, then a chance
of showers wednesday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 080905
glfle 
expires:202608081445;;818898

open lake forecast for lake erie
national weather service cleveland oh
505 am edt sat aug 8 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 is moving through the great lakes today and will
cross the lake tonight. a ridge averaging 30.00 inches will 
build over the region for sunday. a series of weak low pressure
systems 29.90 inches will move through the region sunday night
through tuesday. high pressure 30.00 inches will build into the
region for wednesday.


lez061-168-169-081445-
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-
505 am edt sat aug 8 2026

.today...southwest winds 10 to 15 knots. showers likely with a
chance of thunderstorms early, then a chance of showers and
thunderstorms late this morning. waves 1 to 3 feet building to
2 to 4 feet. 
.tonight...southwest winds 5 to 15 knots becoming north. a chance
of showers with a slight chance of thunderstorms in the evening,
then a slight chance of showers and thunderstorms after midnight.
waves 2 to 4 feet. 
.sunday...north winds less than 10 knots becoming west. waves
2 feet or less. 
.sunday night...west winds 10 knots or less becoming southwest
10 to 15 knots. showers likely overnight. waves 2 feet or less. 
.monday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely 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 north less than
10 knots. a chance of showers and thunderstorms during the day,
then a chance of showers tuesday night. waves 1 to 3 feet. 
.wednesday...north winds 10 knots or less becoming west. a chance
of showers. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 080728
glfsc 
expires:202608081530;;815390

lake st clair forecast
national weather service detroit/pontiac mi
328 am edt sat aug 8 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.


lcz460-081530-
lake st clair-
328 am edt sat aug 8 2026

.today...southwest winds 10 to 15 knots. mostly sunny. waves 2 feet
or less.
.tonight...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 . a chance
of light showers. showers and a chance of thunderstorms after
midnight. waves 2 feet or less.
.monday...southwest winds 10 to 15 knots becoming west 5 to 10 knots
in the evening. partly cloudy. light showers in the morning. a
chance of thunderstorms. light showers likely in the afternoon and
evening. waves 2 feet or less.
.tuesday...northeast winds 5 to 10 knots. partly cloudy. showers
likely 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 080728
glflh 
expires:202608081530;;815386

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt sat aug 8 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.


lhz361-081530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
328 am edt sat aug 8 2026

.today...southwest winds 5 to 10 knots becoming west 10 to
15 knots in the late morning and afternoon. waves 1 to 3 feet. 
.tonight...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening...then becoming light and variable after
midnight becoming southwest 5 to 10 knots early in the morning.
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 080728
glflh 
expires:202608081530;;815387

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt sat aug 8 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.


lhz362-363-081530-
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-
328 am edt sat aug 8 2026

.today...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. 
.tonight...northwest winds 10 to 15 knots becoming north 5 to
10 knots late in the evening...then becoming light and variable
after midnight becoming west 5 to 10 knots early in the morning.
waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. 
.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. 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 kdtx 080728
glflh 
expires:202608081530;;815388

open lake forecast for lake huron
national weather service detroit/pontiac mi
328 am edt sat aug 8 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>464-081530-
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-
328 am edt sat aug 8 2026

.today...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. 
.tonight...north winds 5 to 10 knots in the evening 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 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. 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.
waves 2 feet or less. 


$$

fzus63 kmkx 080851
glflm 
expires:202608081600;;818281

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
351 am cdt sat aug 8 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...

no major changes to the going forecast at this time.

low pressure of 29.8 inches over lake superior early this morning 
will move east toward lake ontario dragging a cold front over the
lake. west to northwest winds behind the front early this morning 
will quickly return to southerly by this 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-081600-
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-
351 am cdt sat aug 8 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 20 kt diminishing to 10 to 15 kt. waves
2 to 4 ft. 
.tonight...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 and
thunderstorms in the afternoon. waves 1 to 2 ft building to 3 to
5 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest.
showers likely with a chance of thunderstorms. waves 3 to 5 ft
subsiding to 1 to 3 ft. 
.monday...west winds 10 to 15 kt veering to northeast. chance of
showers and thunderstorms in the morning, then chance of showers
in the afternoon. waves 1 to 3 ft. 
.monday night...northeast winds 5 to 10 kt becoming east. showers
likely with a chance of thunderstorms. waves 1 to 2 ft.
.tuesday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
chance of showers. waves 1 to 2 ft. 
.wednesday...east winds 10 to 15 kt backing to west. waves 1 ft
or less.  

$$

fzus63 kmkx 080851
glflm 
expires:202608081600;;818280

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
351 am cdt sat aug 8 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...

no major changes to the going forecast at this time.

low pressure of 29.8 inches over lake superior early this morning 
will move east toward lake ontario dragging a cold front over the
lake. west to northwest winds behind the front early this morning 
will quickly return to southerly by this 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.


lmz261-362-364-366-563-565-567-868-081600-
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-
351 am cdt sat aug 8 2026

sheboygan wi to pentwater mi north...

.today...northwest winds 10 to 20 kt backing to southwest. waves
2 to 4 ft subsiding to 1 to 2 ft. 
.tonight...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.
waves 2 to 4 ft building to 3 to 5 ft. 
.sunday night...southwest winds 10 to 20 kt becoming west 10 to
15 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.monday...north winds 10 to 15 kt becoming northwest. waves 1 to
3 ft. 
.monday night...southwest winds 10 to 15 kt veering to northeast.
chance of showers. waves 1 ft or less. 
.tuesday...east winds 5 to 10 kt veering to southwest 10 to
15 kt. waves 1 ft or less. 
.wednesday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 ft or less.  

$$

fzus63 kmqt 080801
glfls 
expires:202608082000;;816104

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 8 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 29.8 inch trough continues to move east of lake superior early 
this morning. by daybreak, the up will be situated between a 29.5 
inch quebec low and a 30.0 inch four corners high. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
through monday night. weak ridging of 30.0 inches, extending between 
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.




lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat aug 8 2026 /300 am cdt sat aug 8 2026/

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet. 
.today...west winds 10 to 20 knots backing southwest in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then veering north late. a chance of
showers. a slight chance of thunderstorms after midnight. waves
subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. a slight chance of
showers through early afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots. 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 north after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202608082000;;816107

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 8 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 29.8 inch trough continues to move east of lake superior early 
this morning. by daybreak, the up will be situated between a 29.5 
inch quebec low and a 30.0 inch four corners high. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
through monday night. weak ridging of 30.0 inches, extending between 
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.




lsz265-082000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sat aug 8 2026

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet. 
.today...west winds 15 to 25 knots diminishing to 10 to 20 knots
late. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots veering west late. a
chance of showers after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots becoming east 5 to
15 knots in the afternoon. a chance of showers. waves calm to
2 feet. 
.sunday night...southeast winds 5 to 15 knots veering west after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202608082000;;816106

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 8 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 29.8 inch trough continues to move east of lake superior early 
this morning. by daybreak, the up will be situated between a 29.5 
inch quebec low and a 30.0 inch four corners high. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
through monday night. weak ridging of 30.0 inches, extending between 
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.




lsz264-082000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sat aug 8 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...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. 
.tonight...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 southwest late. a
slight chance of showers through early afternoon. waves calm to
2 feet. 
.sunday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...west winds less than 10 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds less than 10 knots backing southwest. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202608082000;;816109

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 8 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 29.8 inch trough continues to move east of lake superior early 
this morning. by daybreak, the up will be situated between a 29.5 
inch quebec low and a 30.0 inch four corners high. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
through monday night. weak ridging of 30.0 inches, extending between 
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.




lsz267-082000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sat aug 8 2026

.early this morning...west winds 10 to 20 knots. areas of dense
fog. waves calm to 2 feet. 
.today...west winds 10 to 20 knots diminishing to 5 to 15 knots
late. areas of dense fog through early afternoon. waves calm to
2 feet. 
.tonight...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...west winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon, then backing northeast late. 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...northwest winds 5 to 15 knots backing west by mid
afternoon. 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 080801
glfls 
expires:202608082000;;816105

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 8 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 29.8 inch trough continues to move east of lake superior early 
this morning. by daybreak, the up will be situated between a 29.5 
inch quebec low and a 30.0 inch four corners high. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
through monday night. weak ridging of 30.0 inches, extending between 
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.




lsz263-082000-
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 am edt sat aug 8 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots becoming southwest 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.tonight...southwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. a chance of showers. a slight chance of
thunderstorms after midnight. waves subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots veering west in the
afternoon, then backing southwest late. a 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...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...southwest 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 080801
glfls 
expires:202608082000;;816108

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat aug 8 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 29.8 inch trough continues to move east of lake superior early 
this morning. by daybreak, the up will be situated between a 29.5 
inch quebec low and a 30.0 inch four corners high. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
through monday night. weak ridging of 30.0 inches, extending between 
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.




lsz266-082000-
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 am edt sat aug 8 2026

.early this morning...northwest winds 10 to 20 knots. patchy fog.
waves calm to 2 feet. 
.today...west winds 10 to 20 knots. patchy fog through early
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering west late. a chance of
showers after midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon, then backing northeast late. a chance
of showers. waves calm to 2 feet. 
.sunday night...east winds 5 to 15 knots backing north after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots. waves calm to 2 feet.

$$