fzus61 kbuf 031402
glflo 
expires:202609032100;;834464

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu sep 3 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 weak trough averaging 29.9 inches lingers over lake ontario 
through tonight. on friday through monday, a ridge averaging 30.1 
inches should affect the lake as the embedded high pressure center 
moves from northern ontario toward the mid-atlantic states. this 
ridge should then exit generally southward monday night through 
tuesday and allow a cold front to drift southward across lake 
ontario.


loz062-032100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt thu sep 3 2026

.this afternoon...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.tonight...west winds 10 knots or less becoming northwest. waves
1 foot or less. 
.friday...northwest winds less than 10 knots. waves 1 foot or
less. 
.friday night...west winds 5 to 10 knots becoming north. waves
1 foot or less. 
.saturday...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.sunday...northeast winds around 10 knots becoming light and
variable. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots.
waves 1 foot or less. 

$$

fzus61 kbuf 031402
glflo 
expires:202609032100;;834465

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt thu sep 3 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 weak trough averaging 29.9 inches lingers over lake ontario 
through tonight. on friday through monday, a ridge averaging 30.1 
inches should affect the lake as the embedded high pressure center 
moves from northern ontario toward the mid-atlantic states. this 
ridge should then exit generally southward monday night through 
tuesday and allow a cold front to drift southward across lake 
ontario.


loz063>065-032100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt thu sep 3 2026

.this afternoon...west winds 5 to 10 knots. waves 2 feet or less. 
.tonight...west winds 5 to 10 knots becoming northwest. waves
1 foot or less. 
.friday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.friday night...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.saturday...north winds 5 to 15 knots becoming northeast. waves
2 feet or less. 
.sunday...northeast winds 10 knots or less. waves 2 feet or less.
.monday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 

$$

fzus61 kcle 031414
glfle 
expires:202609032015;;835145

open lake forecast for lake erie
national weather service cleveland oh
1014 am edt thu sep 3 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 frontal boundary will oscillate along lake erie through 
tonight with pressure averaging 29.90 inches before being pushed 
south as a cold front friday. a ridge averaging 30.00 inches will 
build from the north through the weekend into early next week.


lez162-163-032015-
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-
1014 am edt thu sep 3 2026

.rest of today...southwest winds 5 to 10 knots. a slight chance
of showers and thunderstorms late this morning, then a chance of
showers and thunderstorms this afternoon. waves 1 foot or less. 
.tonight...west winds 5 to 10 knots. a chance of showers and
thunderstorms through the early overnight, then showers likely
with a chance of thunderstorms late. waves 1 foot or less. 
.friday...northwest winds 5 to 10 knots becoming north. showers
with a chance of thunderstorms in the morning. waves 1 foot or
less. 
.friday night...northeast winds 5 to 10 knots. a chance of
showers. waves 1 foot or less. 
.saturday...northeast winds 10 to 15 knots. a chance of showers
during the day. waves 2 feet or less. 
.sunday...northeast winds 5 to 15 knots becoming east. waves
2 feet or less. 
.monday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 031414
glfle 
expires:202609032015;;835146

open lake forecast for lake erie
national weather service cleveland oh
1014 am edt thu sep 3 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 frontal boundary will oscillate along lake erie through 
tonight with pressure averaging 29.90 inches before being pushed 
south as a cold front friday. a ridge averaging 30.00 inches will 
build from the north through the weekend into early next week.


lez164>167-032015-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
1014 am edt thu sep 3 2026

.rest of today...southwest winds 5 to 10 knots becoming west. a
slight chance of showers and thunderstorms, then a chance of
showers and thunderstorms late. waves 2 feet or less. 
.tonight...southwest winds 5 to 10 knots. thunderstorms likely
with a chance of showers in the evening, then a chance of showers
and thunderstorms after midnight. showers likely with a chance of
thunderstorms late. waves 1 foot or less. 
.friday...west winds 5 to 10 knots becoming north. showers likely
in the morning, then a chance of showers in the afternoon. waves
1 foot or less. 
.friday night...north winds 5 to 10 knots becoming northeast. a
chance of showers. waves 2 feet or less. 
.saturday...northeast winds 5 to 15 knots becoming east. waves
1 to 2 feet. 
.sunday...east winds 5 to 15 knots. waves 1 to 2 feet. 
.monday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 031414
glfle 
expires:202609032015;;835147

open lake forecast for lake erie
national weather service cleveland oh
1014 am edt thu sep 3 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 frontal boundary will oscillate along lake erie through 
tonight with pressure averaging 29.90 inches before being pushed 
south as a cold front friday. a ridge averaging 30.00 inches will 
build from the north through the weekend into early next week.


lez061-168-169-032015-
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-
1014 am edt thu sep 3 2026

.rest of today...southwest winds 5 to 10 knots becoming west. a
slight chance of showers and thunderstorms early this afternoon.
a chance of showers and thunderstorms late. waves 1 to 2 feet. 
.tonight...west winds 10 knots or less. showers and thunderstorms
likely in the evening, then showers likely with a chance of
thunderstorms after midnight. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming north. showers
likely. waves 1 foot or less. 
.friday night...north winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.sunday...northeast winds 5 to 15 knots becoming east. waves
2 feet or less. 
.monday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 031404
glfsc 
expires:202609032215;;834540

lake st clair forecast
national weather service detroit/pontiac mi
1004 am edt thu sep 3 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...a stalled front remains positioned over the central to
southern great lakes today into friday before the front eases
southward on saturday. light wind and thunderstorm chances
persist through this period, then high pressure brings drier
conditions this weekend.


lcz460-032215-
lake st clair-
1004 am edt thu sep 3 2026

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

$$

fzus63 kdtx 031403
glflh 
expires:202609032215;;834501

open lake forecast for lake huron
national weather service detroit/pontiac mi
1003 am edt thu sep 3 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...a stalled front remains positioned over the central to
southern great lakes today into friday before the front eases
southward on saturday. light wind and thunderstorm chances
persist through this period, then high pressure brings drier
conditions this weekend.


lhz463-464-032215-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
1003 am edt thu sep 3 2026

.rest of today...light and variable winds becoming north 5 to
10 knots late in the afternoon. a chance of showers in the
afternoon. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable. a chance of showers. waves 2 feet or
less. 
.friday...light and variable winds becoming northeast 5 to
10 knots in the late morning and afternoon. waves 2 feet or less.
.friday night...northeast winds 5 to 10 knots. waves 2 feet or
less. 
.saturday...northeast winds 5 to 10 knots becoming north 10 to
15 knots late in the afternoon...then becoming northeast 5 to
10 knots late in the evening. waves 1 to 3 feet. 
.sunday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 031403
glflh 
expires:202609032215;;834500

open lake forecast for lake huron
national weather service detroit/pontiac mi
1003 am edt thu sep 3 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...a stalled front remains positioned over the central to
southern great lakes today into friday before the front eases
southward on saturday. light wind and thunderstorm chances
persist through this period, then high pressure brings drier
conditions this weekend.


lhz363-462-032215-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
1003 am edt thu sep 3 2026

.rest of today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday...light and variable winds becoming northeast 5 to
10 knots by midnight. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 031403
glflh 
expires:202609032215;;834499

open lake forecast for lake huron
national weather service detroit/pontiac mi
1003 am edt thu sep 3 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...a stalled front remains positioned over the central to
southern great lakes today into friday before the front eases
southward on saturday. light wind and thunderstorm chances
persist through this period, then high pressure brings drier
conditions this weekend.


lhz361-362-032215-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
1003 am edt thu sep 3 2026

.rest of today...north winds 5 to 10 knots late in the morning
becoming light and variable. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...light and variable winds becoming north 5 to
10 knots after midnight. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.sunday...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots
early in the evening...then becoming southeast 10 to 15 knots by
midnight. a chance of. waves 2 feet or less. 


$$

fzus63 kmkx 031504
glflm 
expires:202609032115;;836738

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
1004 am cdt thu sep 3 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...

a frontal boundary will remain across the great lakes region 
through friday. as this frontal boundary waffles north to south 
across the lake from day to day, generally east to northeast winds
are expected north of the front, with east to southeast winds 
south of the front. on and off thunderstorms will be possible 
along and north of this frontal boundary through at least friday 
night. then high pressure around 30.1 inches builds over hudson 
bay on saturday, while low pressure around 29.6 inches moves into 
the northern great plains. similar to earlier week storms, 
widespread severe weather is not anticipated, though isolated 
stronger storms with hail and gusty winds are possible.


lmz080-669-671-673-675-777-779-870-872-874-876-878-032115-
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-
1004 am cdt thu sep 3 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 20 kt backing to east 10 to
15 kt. isolated showers and thunderstorms late this morning, then
chance of showers and thunderstorms this afternoon. waves 1 ft or
less. 
.tonight...southeast winds 10 to 15 kt. chance of thunderstorms
and slight chance of showers in the evening, then showers likely
with a chance of thunderstorms overnight. waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt backing to northeast 5 to
10 kt. chance of showers and thunderstorms in the morning. waves
1 to 2 ft. 
.friday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of showers and thunderstorms. waves 1 to 2 ft.
.saturday...east winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...east winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...southeast winds 10 to 15 kt becoming east. waves 2 to
4 ft. 
.monday...southeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 031504
glflm 
expires:202609032115;;836737

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
1004 am cdt thu sep 3 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...

a frontal boundary will remain across the great lakes region 
through friday. as this frontal boundary waffles north to south 
across the lake from day to day, generally east to northeast winds
are expected north of the front, with east to southeast winds 
south of the front. on and off thunderstorms will be possible 
along and north of this frontal boundary through at least friday 
night. then high pressure around 30.1 inches builds over hudson 
bay on saturday, while low pressure around 29.6 inches moves into 
the northern great plains. similar to earlier week storms, 
widespread severe weather is not anticipated, though isolated 
stronger storms with hail and gusty winds are possible.


lmz261-362-364-366-563-565-567-868-032115-
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-
1004 am cdt thu sep 3 2026

sheboygan wi to pentwater mi north...

.rest of today...east winds 5 to 10 kt increasing to 10 to 15 kt.
scattered showers and thunderstorms late this morning, then
chance of showers and thunderstorms this afternoon. waves 1 ft or
less. 
.tonight...northeast winds 5 to 10 kt becoming east. chance of
showers and slight chance of thunderstorms in the evening, then
chance of showers and thunderstorms overnight. waves 1 ft or
less. 
.friday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. chance of showers. waves 1 to 2 ft. 
.saturday...east winds 10 to 15 kt becoming northeast. waves 1 to
2 ft. 
.saturday night...east winds 10 to 15 kt becoming southeast.
waves 1 to 3 ft. 
.sunday...southeast winds 10 to 15 kt becoming south. waves 1 to
3 ft. 
.monday...south winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834421

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz264-032000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt thu sep 3 2026

.rest of today...northeast winds less than 10 knots increasing to
5 to 15 knots in the afternoon, then veering east late. patchy
fog. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. patchy fog. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southeast winds 5 to 15 knots increasing to 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.monday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers, then showers likely. waves
building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834422

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz265-032000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt thu sep 3 2026

.rest of today...northeast winds 5 to 15 knots becoming east
10 to 20 knots late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. patchy fog after midnight.
waves calm to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a slight chance of showers through early
afternoon. waves building to 1 to 3 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...southeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.monday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers, then showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834423

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz266-032000-
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-
1000 am edt thu sep 3 2026

.rest of today...north winds 5 to 15 knots veering northeast in
the afternoon. patchy fog. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight. patchy fog through midnight, then areas of dense fog
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots veering south. waves
calm to 2 feet. 
.monday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834424

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz267-032000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt thu sep 3 2026

.rest of today...northwest winds 5 to 15 knots veering north
late. patchy fog. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering east late. patchy
fog. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing north late. waves calm
to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots becoming
southeast 10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots veering south. waves
calm to 2 feet. 
.monday...east winds 10 to 20 knots becoming southeast 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834419

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz162-032000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt thu sep 3 2026 /900 am cdt thu sep 3 2026/

.rest of today...northeast winds 10 to 20 knots becoming east
15 to 25 knots in the afternoon, then becoming northeast 20 to
30 knots late. waves calm to 2 feet building to 2 to 4 feet. 
.tonight...east winds 15 to 25 knots becoming northeast 10 to
20 knots after midnight. a slight chance of showers and
thunderstorms. waves subsiding to 1 to 3 feet. 
.friday...northeast winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of showers through early
afternoon. waves building to 2 to 4 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers and thunderstorms. waves calm to
2 feet. 
.monday...east gales to 35 knots. a chance of showers. showers
likely. waves building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834420

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz263-032000-
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-
1000 am edt thu sep 3 2026

.rest of today...northeast winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon, then becoming east 20 to
30 knots late. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers and
thunderstorms. patchy fog after midnight. waves subsiding to calm
to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves building to 2 to 4 feet. 
.friday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. a slight chance of showers through
midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of showers. waves building to 1 to 3 feet. 
.monday...east winds 20 to 30 knots veering southeast. a chance
of showers. showers likely. waves building to 4 to 7 feet
occasionally to 9 feet. 

$$