fzus61 kbuf 080802
glflo 
expires:202607081500;;610537

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed jul 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 broad 30.1 inch high will remain over the lower great 
lakes through wednesday night while slowly drifting southeast toward 
the delmarva. a weak cold front will cross the lake thursday night 
through early friday, while another 30.1 inch high builds across the 
upper great lakes friday, then expands across the lower great lakes 
later friday night through the weekend.


loz062-081500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt wed jul 8 2026

.today...south winds less than 10 knots. waves 1 foot or less. 
.tonight...south winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. showers
likely with scattered thunderstorms in the afternoon. waves
1 foot or less. 
.thursday night...southwest winds 5 to 10 knots becoming west.
showers likely. waves around 1 foot. 
.friday...northwest winds 10 knots or less becoming north.
showers likely during the day. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.sunday...east winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 080802
glflo 
expires:202607081500;;610538

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed jul 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 broad 30.1 inch high will remain over the lower great 
lakes through wednesday night while slowly drifting southeast toward 
the delmarva. a weak cold front will cross the lake thursday night 
through early friday, while another 30.1 inch high builds across the 
upper great lakes friday, then expands across the lower great lakes 
later friday night through the weekend.


loz063>065-081500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed jul 8 2026

.today...south winds 10 knots or less becoming northwest. waves
2 feet or less. 
.tonight...south winds 10 knots or less becoming southwest. waves
1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. a chance
of showers in the afternoon. waves 1 foot or less. 
.thursday night...west winds 5 to 10 knots. showers likely. waves
1 foot or less. 
.friday...northwest winds 5 to 10 knots becoming north. showers
likely during the day. waves 1 foot or less. 
.saturday...northeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...south winds 10 knots or less. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081326
glfle 
expires:202607082015;;621950

open lake forecast for lake erie
national weather service cleveland oh
926 am edt wed jul 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...
weak high pressure 30.00 inches will build in today into 
thursday. a cold front will cross the lake on friday before high 
pressure 30.00 inches returns this weekend.


lez061-169-082015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
926 am edt wed jul 8 2026

.this afternoon...light and variable winds. waves 1 foot or less. 
.tonight...southwest winds 10 knots or less. waves 1 foot or
less. 
.thursday...southwest winds 5 to 10 knots. waves 2 feet or less. 
.thursday night...southwest winds 5 to 10 knots becoming west.
showers with a chance of thunderstorms. waves 1 to 2 feet. 
.friday...northwest winds 10 knots or less becoming northeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.sunday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081326
glfle 
expires:202607082015;;621949

open lake forecast for lake erie
national weather service cleveland oh
926 am edt wed jul 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...
weak high pressure 30.00 inches will build in today into 
thursday. a cold front will cross the lake on friday before high 
pressure 30.00 inches returns this weekend.


lez165>168-082015-
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-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
926 am edt wed jul 8 2026

.this afternoon...light and variable winds. waves 1 foot or less. 
.tonight...southwest winds 10 knots or less. waves 1 foot or
less. 
.thursday...southwest winds 5 to 10 knots. waves 1 to 2 feet. 
.thursday night...southwest winds 5 to 10 knots becoming west.
showers likely with a chance of thunderstorms. waves 1 to 2 feet.
.friday...northwest winds 5 to 10 knots becoming northeast. a
chance of showers during the day. waves 2 feet or less. 
.saturday...northeast winds 5 to 15 knots becoming east. waves
2 feet or less. 
.sunday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 081326
glfle 
expires:202607082015;;621948

open lake forecast for lake erie
national weather service cleveland oh
926 am edt wed jul 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...
weak high pressure 30.00 inches will build in today into 
thursday. a cold front will cross the lake on friday before high 
pressure 30.00 inches returns this weekend.


lez162>164-082015-
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-
926 am edt wed jul 8 2026

.this afternoon...light and variable winds. waves 1 foot or less. 
.tonight...southeast winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...west winds 5 to 10 knots. a chance of showers in the
afternoon. waves 1 foot or less. 
.thursday night...west winds 5 to 10 knots. showers likely with a
chance of thunderstorms. waves 1 foot or less. 
.friday...northwest winds 5 to 10 knots becoming northeast. a
chance of showers during the day. waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.sunday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 081346
glfsc 
expires:202607082200;;622483

lake st clair forecast
national weather service detroit/pontiac mi
946 am edt wed jul 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...high pressure will wash out across the appalachia
region today which will veer winds to the south and southwest
over the great lakes. a cold front will then push through the
great lakes thursday and bring increasing coverage of showers and
embedded thunderstorms. lingering shower and storm chances
continue friday across the southern great lakes.


lcz460-082200-
lake st clair-
946 am edt wed jul 8 2026

.rest of today...light and variable winds becoming southeast 5 to 10
knots in the afternoon. sunny. waves 2 feet or less.
.tonight...south winds 10 to 15 knots becoming southwest 5 to 10
knots by midnight...then veering to the west early in the morning.
mostly clear. waves 2 feet or less.
.thursday...southwest winds 5 to 10 knots. mostly sunny. a chance of
showers and thunderstorms early in the afternoon. waves 2 feet or
less.
.thursday night...west winds 5 to 10 knots. partly cloudy early in
the evening becoming mostly cloudy. showers likely and a chance of
thunderstorms ...then a chance of light showers after midnight.
waves 2 feet or less.
.friday...north winds 5 to 10 knots increasing to 10 to 15 knots in
the evening. partly cloudy then clearing. a chance of light showers.
waves 2 feet or less.
.saturday...northeast winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.sunday...southeast winds 5 to 10 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 080752
glflh 
expires:202607081600;;610138

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt wed jul 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...high pressure will wash out across the appalachia
region today which will veer winds to the south and southwest
over the great lakes. a cold front will then push through the
great lakes thursday and bring increasing coverage of showers and
embedded thunderstorms. lingering shower and storm chances
continue friday across the southern great lakes.


lhz361-081600-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
352 am edt wed jul 8 2026

.today...light and variable winds. a chance of showers and
thunderstorms in the afternoon. waves 2 feet or less. 
.tonight...light and variable winds becoming north 5 to 10 knots
after midnight...then becoming light and variable early in the
morning. a chance of showers and thunderstorms in the evening...
then showers likely after midnight. waves 2 feet or less. 
.thursday...north winds 5 to 10 knots until late afternoon
becoming light and variable. a chance of showers. waves 2 feet or
less. 
.thursday night...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.friday...north winds 5 to 10 knots in the morning becoming light
and variable. waves 2 feet or less. 
.saturday...light and variable winds becoming east 5 to 10 knots
early in the evening...then veering to the south by midnight.
waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots backing to the south .
waves 2 feet or less. 


$$

fzus63 kdtx 080752
glflh 
expires:202607081600;;610139

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt wed jul 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...high pressure will wash out across the appalachia
region today which will veer winds to the south and southwest
over the great lakes. a cold front will then push through the
great lakes thursday and bring increasing coverage of showers and
embedded thunderstorms. lingering shower and storm chances
continue friday across the southern great lakes.


lhz362-363-081600-
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-
352 am edt wed jul 8 2026

.today...light and variable winds becoming southeast 5 to
10 knots in the afternoon. waves 2 feet or less. 
.tonight...northeast winds 5 to 10 knots early in the evening
becoming light and variable. a chance of showers. waves 2 feet or
less. 
.thursday...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the afternoon. showers likely in the
morning...then a chance of showers in the afternoon. waves 2 feet
or less. 
.thursday night...light and variable winds becoming north 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.friday...north winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.saturday...light and variable winds. waves 2 feet or less. 
.sunday...light and variable winds becoming south 5 to 10 knots.
waves 2 feet or less. 


$$

fzus63 kdtx 080752
glflh 
expires:202607081600;;610140

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 am edt wed jul 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...high pressure will wash out across the appalachia
region today which will veer winds to the south and southwest
over the great lakes. a cold front will then push through the
great lakes thursday and bring increasing coverage of showers and
embedded thunderstorms. lingering shower and storm chances
continue friday across the southern great lakes.


lhz462>464-081600-
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-
352 am edt wed jul 8 2026

.today...light and variable winds becoming southeast 5 to
10 knots in the afternoon. patchy dense fog in the morning. waves
2 feet or less. 
.tonight...south winds 5 to 10 knots veering to the southwest
after midnight. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots backing to the south
early in the afternoon. a chance of showers in the morning...then
a chance of showers and thunderstorms in the afternoon. waves
2 feet or less. 
.thursday night...light and variable winds becoming north 5 to
10 knots after midnight. a chance of showers and thunderstorms in
the evening. waves 2 feet or less. 
.friday...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots early in the morning
becoming light and variable...then becoming north 5 to 10 knots
early in the evening veering to the northeast. waves 2 feet or
less. 
.sunday...light and variable winds becoming southeast 5 to
10 knots . waves 2 feet or less. 


$$

fzus63 kmkx 080816
glflm 
expires:202607081530;;611628

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

high pressure around 30.1 inches will shift southeast into the 
ohio valley today. modest south winds will continue today, as weak
low pressure around 29.8 inches and an accompanying cold front 
approaches from the northern great plains. modest southwest winds 
tonight will become north behind the frontal passage thursday into
thursday night. winds will become north to northeast on friday, 
as high pressure around 30.1 inches builds into the the region.
the high should continue to bring light to modest winds for the 
weekend.


lmz261-362-364-366-563-565-567-868-081530-
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-
316 am cdt wed jul 8 2026

sheboygan wi to pentwater mi north...

.today...south winds 10 to 15 kt becoming southwest 10 to 20 kt.
chance of showers and slight chance of thunderstorms this
morning, then chance of showers and thunderstorms this afternoon.
waves 1 to 2 ft. 
.tonight...southwest winds 10 to 20 kt diminishing to 10 to 15 kt
late in the evening, then veering to northwest 5 to 10 kt after
midnight becoming north late. showers with a chance of
thunderstorms in the evening, then showers likely with slight
chance of thunderstorms overnight. waves 1 to 3 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
chance of showers in the morning. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.friday...northeast winds 10 to 15 kt becoming north 15 to 25 kt
in the afternoon. waves 1 to 2 ft building to 1 to 3 ft. 
.friday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 5 to 10 kt becoming southwest 10 to
15 kt. waves 1 ft or less. 
.sunday...southwest winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 080816
glflm 
expires:202607081530;;611629

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

high pressure around 30.1 inches will shift southeast into the 
ohio valley today. modest south winds will continue today, as weak
low pressure around 29.8 inches and an accompanying cold front 
approaches from the northern great plains. modest southwest winds 
tonight will become north behind the frontal passage thursday into
thursday night. winds will become north to northeast on friday, 
as high pressure around 30.1 inches builds into the the region.
the high should continue to bring light to modest winds for the 
weekend.


lmz080-669-671-673-675-777-779-870-872-874-876-878-081530-
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-
316 am cdt wed jul 8 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 5 to 10 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.tonight...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of showers and thunderstorms. waves 1 to 3 ft.
.thursday...southwest winds 10 to 15 kt veering to north 10 to
20 kt. chance of showers. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. chance of showers in the evening. waves 1 to 2 ft. 
.friday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft building to 2 to 4 ft. 
.friday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 2 to 4 ft. 
.saturday...east winds 5 to 10 kt becoming north 10 to 15 kt.
waves 1 to 2 ft. 
.sunday...southeast winds 10 to 15 kt veering to southwest 10 to
20 kt. waves 1 ft or less.  

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610443

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...east winds 5 to 15 knots increasing to 10 to 20 knots in
the afternoon. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming southwest 10 to
20 knots. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610442

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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 wed jul 8 2026

.early this morning...west winds less than 10 knots. a slight
chance of showers. waves calm to 2 feet. 
.today...west winds less than 10 knots backing south in the
afternoon. a chance of showers through early afternoon. waves
calm to 2 feet. 
.tonight...southwest winds less than 10 knots veering west after
midnight. waves calm to 2 feet. 
.thursday...west winds less than 10 knots. waves calm to 2 feet. 
.thursday night...west winds less than 10 knots veering northwest
after midnight. waves calm to 2 feet. 
.friday...east winds less than 10 knots veering southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 1 to
3 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610441

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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 wed jul 8 2026

.early this morning...west winds less than 10 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...northeast winds 5 to 15 knots. a chance of showers and a
slight chance of thunderstorms through early afternoon. waves
calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.thursday...west winds less than 10 knots veering north in the
afternoon, then becoming southwest 5 to 15 knots late. waves calm
to 2 feet. 
.thursday night...east winds less than 10 knots veering west
after midnight. waves calm to 2 feet. 
.friday...east winds less than 10 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots becoming west less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610444

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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 wed jul 8 2026

.early this morning...south winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.today...east winds 5 to 15 knots. showers likely through early
afternoon. a slight chance of thunderstorms. a slight chance of
showers by mid afternoon. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots backing north after
midnight, then backing northwest late. a slight chance of showers
through midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots veering north
after midnight. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610440

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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

.early this morning...northwest winds 5 to 15 knots. showers and
a slight chance of thunderstorms. waves calm to 2 feet. 
.today...north winds 5 to 15 knots veering northeast in the
afternoon, then veering south late. a chance of showers and a
slight chance of thunderstorms through early afternoon. waves
calm to 2 feet. 
.tonight...north winds less than 10 knots. waves calm to 2 feet. 
.thursday...north winds less than 10 knots. waves calm to 2 feet.
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots becoming north less
than 10 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610445

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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

.early this morning...east winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.today...east winds 5 to 15 knots backing northeast in the
afternoon. showers likely through early afternoon, then a chance
of showers and a slight chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots backing northwest late. a
slight chance of showers through midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$