fzus61 kbuf 271402
glflo 
expires:202610272100;;804211

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue oct 27 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 ridge averaging 30.6 inches affects the lake through 
thursday as the embedded high pressure center wobbles southeastward 
from northern ontario to north atlantic waters southeast of the 
canadian maritimes. the ridge exits eastward thursday night as a 
cold front sweeps eastward across the lake. behind the front, 
another ridge averaging 30.2 inches builds from the western great 
lakes through this saturday.


loz062-272100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt tue oct 27 2026

.this afternoon...east winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots. waves 1 to 2 feet. 
.wednesday...east winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 
.wednesday night...east winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 10 to 15 knots becoming west. a
chance of showers thursday night. waves 2 feet or less building
to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.friday...northwest winds 5 to 15 knots becoming north less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.saturday...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 

$$

fzus61 kbuf 271402
glflo 
expires:202610272100;;804212

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue oct 27 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 ridge averaging 30.6 inches affects the lake through 
thursday as the embedded high pressure center wobbles southeastward 
from northern ontario to north atlantic waters southeast of the 
canadian maritimes. the ridge exits eastward thursday night as a 
cold front sweeps eastward across the lake. behind the front, 
another ridge averaging 30.2 inches builds from the western great 
lakes through this saturday.


loz063>065-272100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt tue oct 27 2026

.this afternoon...northeast winds 10 knots or less. waves 1 to
3 feet. 
.tonight...northeast winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.wednesday...southeast winds 5 to 10 knots. waves 2 feet or less.
.wednesday night...southeast winds 5 to 15 knots becoming south.
waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming west. showers
likely thursday night. waves 1 to 3 feet building to 2 to 4 feet.
.friday...northwest winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...north winds 10 knots or less becoming southeast.
waves 1 foot or less. 

$$

fzus61 kcle 271413
glfle 
expires:202610280815;;805075

open lake forecast for lake erie
national weather service cleveland oh
1013 am edt tue oct 27 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis... 
high pressure of 30.50 inches will strengthen over the eastern 
great lakes today before moving off the new england coast 
wednesday. the next cold front slides south across lake erie 
thursday night. high pressure of 30.40 inches will build over the 
eastern great lakes again friday into saturday.


lez164>166-280815-
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-
1013 am edt tue oct 27 2026

.overnight...east winds 5 to 15 knots becoming southeast.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.wednesday night...southeast winds 10 knots or less becoming
south 10 to 15 knots. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.thursday night...southwest winds 15 to 20 knots becoming
northwest 10 to 15 knots. a chance of showers. waves 1 to 3 feet.
.friday...north winds 5 to 10 knots becoming east. waves 2 feet
or less. 
.saturday...east winds 5 to 10 knots becoming southeast. a chance
of showers saturday night. waves 1 foot or less. 
.sunday...southeast winds 10 to 15 knots becoming south. a chance
of showers. waves 2 feet or less. 

$$

fzus61 kcle 271413
glfle 
expires:202610280815;;805074

open lake forecast for lake erie
national weather service cleveland oh
1013 am edt tue oct 27 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis... 
high pressure of 30.50 inches will strengthen over the eastern 
great lakes today before moving off the new england coast 
wednesday. the next cold front slides south across lake erie 
thursday night. high pressure of 30.40 inches will build over the 
eastern great lakes again friday into saturday.


lez162-163-280815-
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-
1013 am edt tue oct 27 2026

.overnight...east winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.wednesday...south winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.wednesday night...southeast winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 10 to 15 knots. waves 1 to 2 feet. 
.thursday night...southwest winds 10 to 15 knots becoming
northwest. waves 1 to 2 feet. 
.friday...north winds 5 to 10 knots becoming east. waves 1 foot
or less. 
.saturday...east winds 5 to 10 knots becoming southeast. a chance
of showers saturday night. waves 1 foot or less. 
.sunday...southeast winds around 10 knots becoming south. a
chance of showers. waves 1 foot or less. 

$$

fzus61 kcle 271413
glfle 
expires:202610280815;;805076

open lake forecast for lake erie
national weather service cleveland oh
1013 am edt tue oct 27 2026

for waters beyond five nautical miles of shore on lake erie

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

.synopsis... 
high pressure of 30.50 inches will strengthen over the eastern 
great lakes today before moving off the new england coast 
wednesday. the next cold front slides south across lake erie 
thursday night. high pressure of 30.40 inches will build over the 
eastern great lakes again friday into saturday.


lez061-167>169-280815-
ripley to buffalo ny extending from 5nm 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-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
1013 am edt tue oct 27 2026

.overnight...east winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday...south winds 5 to 10 knots becoming light and
variable. waves 2 feet or less. 
.wednesday night...southeast winds 10 knots or less becoming
south 10 to 15 knots. waves 2 feet or less. 
.thursday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.thursday night...southwest winds 15 to 20 knots becoming
northwest and diminishing to around 10 knots. a chance of
showers. waves 1 to 3 feet. 
.friday...north winds 10 knots or less becoming northeast. waves
1 to 3 feet subsiding to 1 foot or less. 
.saturday...east winds 5 to 10 knots becoming southeast. waves
1 foot or less. 
.sunday...southeast winds 10 to 15 knots becoming south. a chance
of showers. waves 2 feet or less. 

$$

fzus63 kdtx 271338
glfsc 
expires:202610272200;;803511

lake st clair forecast
national weather service detroit/pontiac mi
938 am edt tue oct 27 2026

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

.synopsis...high pressure, 30.50 inches, will settle over southern
quebec this evening. low pressure is forecast to move across
northern ontario into quebec on thursday, dragging a cold front
across the great lakes. this front will provide the next chance
for light rain.


lcz460-272200-
lake st clair-
938 am edt tue oct 27 2026

.rest of today...east winds 10 to 15 knots diminishing to 5 to 10
knots in the afternoon. partly sunny. waves 2 feet or less.
.tonight...east winds 10 to 15 knots becoming southeast 5 to 10
knots early in the morning. mostly cloudy. waves 2 feet or less.
.wednesday...south winds 5 to 10 knots. partly sunny. waves 2 feet
or less.
.wednesday night...south winds 5 to 10 knots. mostly clear. waves 2
feet or less.
.thursday...southwest winds 10 to 15 knots veering to the west in
the evening. mostly sunny becoming partly cloudy. waves 2 feet or
less.
.friday...east winds 5 to 10 knots. partly cloudy. waves 2 feet or
less.
.saturday...east winds 5 to 10 knots. mostly cloudy. waves 2 feet or
less.

$$

fzus63 kdtx 271338
glflh 
expires:202610272200;;803449

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 am edt tue oct 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, will settle over southern
quebec this evening. low pressure is forecast to move across
northern ontario into quebec on thursday, dragging a cold front
across the great lakes. this front will provide the next chance
for light rain.


lhz361-272200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
938 am edt tue oct 27 2026

.rest of today...east winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet late in the afternoon. 
.tonight...southeast winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning. 
.wednesday...south winds 10 to 15 knots becoming southeast 5 to
10 knots in the late morning and afternoon. waves 1 to 3 feet. 
.wednesday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. a chance of
rain after midnight. waves 1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the morning...then veering to the northwest late
in the afternoon. a chance of rain. waves 2 to 4 feet subsiding
to 1 to 3 feet late in the afternoon. 
.friday...west winds 10 to 15 knots becoming light and variable.
waves 2 feet or less. 
.saturday...east winds 5 to 10 knots veering to the southeast by
midnight. waves 2 feet or less. 


$$

fzus63 kdtx 271338
glflh 
expires:202610272200;;803450

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 am edt tue oct 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, will settle over southern
quebec this evening. low pressure is forecast to move across
northern ontario into quebec on thursday, dragging a cold front
across the great lakes. this front will provide the next chance
for light rain.


lhz362-363-272200-
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-
938 am edt tue oct 27 2026

.rest of today...east winds 10 to 15 knots decreasing to 5 to
10 knots late in the afternoon. waves 1 to 3 feet. 
.tonight...southeast winds 10 to 15 knots veering to the south
early in the morning. waves 1 to 3 feet building to 2 to 4 feet
early in the morning. 
.wednesday...south winds 10 to 15 knots. waves 2 to 4 feet. 
.wednesday night...south winds 10 to 15 knots. a chance of rain
after midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the morning...then veering to the northwest late
in the evening. a chance of rain. waves 3 to 5 feet. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming north 5 to
10 knots by midnight. waves 2 to 4 feet subsiding to 2 feet or
less. 
.saturday...north winds 5 to 10 knots veering to the east. waves
2 feet or less. 


$$

fzus63 kdtx 271338
glflh 
expires:202610272200;;803451

open lake forecast for lake huron
national weather service detroit/pontiac mi
938 am edt tue oct 27 2026

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, will settle over southern
quebec this evening. low pressure is forecast to move across
northern ontario into quebec on thursday, dragging a cold front
across the great lakes. this front will provide the next chance
for light rain.


lhz462>464-272200-
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-
938 am edt tue oct 27 2026

.rest of today...east winds 5 to 10 knots. waves 1 to 3 feet. 
.tonight...east winds 5 to 10 knots becoming southeast 10 to
15 knots in the late evening and overnight. waves 1 to 3 feet
building to 2 to 4 feet early in the morning. 
.wednesday...southeast winds 10 to 15 knots becoming south 5 to
10 knots early in the afternoon. waves 1 to 3 feet. 
.wednesday night...south winds 10 to 15 knots. waves 1 to 3 feet.
.thursday...southwest winds 10 to 15 knots veering to the
northwest late in the evening. a chance of rain late in the
morning. waves 2 to 4 feet subsiding to 1 to 3 feet late in the
afternoon. 
.friday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then becoming
light and variable early in the evening becoming east 5 to
10 knots by midnight. waves 2 feet or less. 
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots by midnight. waves 2 feet or less. 


$$

fzus63 kmkx 271401
glflm 
expires:202610272130;;804182

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cdt tue oct 27 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 large area of high pressure around 30.5 inches will slowly 
track from ontario into new england through today into tomorrow
morning, while weakening low pressure will move northward across 
minnesota into canada. modest to breezy southeast winds from 15 to
20 knots today and evening will shift south late tonight through 
wednesday. some gust to 25 knots may occur tonight over the
northern third of lake michigan. moderate southerlies then
continue on wednesday.

a cold front will then gradually move across the lake on 
thursday, with winds shifting from modest to breezy southwest 
winds wednesday night to lighter northwest winds after the 
passage by thursday afternoon.


lmz080-669-671-673-675-777-779-870-872-874-876-878-272130-
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-
901 am cdt tue oct 27 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.tonight...southeast winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.wednesday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.thursday...southwest winds 15 to 25 kt becoming west 10 to
20 kt. chance of showers. waves 4 to 6 ft occasionally to 8 ft. 
.thursday night...north winds 5 to 10 kt. waves 2 to 4 ft
subsiding to 1 to 2 ft. 
.friday...northeast winds 5 to 10 kt becoming east. waves 1 to
2 ft. 
.saturday...southeast winds 10 to 20 kt. chance of showers. waves
2 to 4 ft.  

$$

fzus63 kmkx 271401
glflm 
expires:202610272130;;804181

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cdt tue oct 27 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 large area of high pressure around 30.5 inches will slowly 
track from ontario into new england through today into tomorrow
morning, while weakening low pressure will move northward across 
minnesota into canada. modest to breezy southeast winds from 15 to
20 knots today and evening will shift south late tonight through 
wednesday. some gust to 25 knots may occur tonight over the
northern third of lake michigan. moderate southerlies then
continue on wednesday.

a cold front will then gradually move across the lake on 
thursday, with winds shifting from modest to breezy southwest 
winds wednesday night to lighter northwest winds after the 
passage by thursday afternoon.


lmz261-362-364-366-563-565-567-868-272130-
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-
901 am cdt tue oct 27 2026

sheboygan wi to pentwater mi north...

.rest of today...southeast winds 10 to 20 kt. chance of sprinkles
this afternoon. waves 3 to 5 ft. 
.tonight...southeast winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.wednesday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...south winds 15 to 25 kt becoming southwest to
30 kt. chance of showers in the evening, then showers overnight.
waves 4 to 6 ft occasionally to 8 ft. 
.thursday...southwest winds to 30 kt becoming northwest 10 to
20 kt in the afternoon. chance of showers in the morning. waves
4 to 6 ft occasionally to 8 ft. 
.thursday night...northwest winds 10 to 15 kt. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.friday...north winds 5 to 10 kt backing to west. waves 1 to
2 ft. 
.saturday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 271401
glfls 
expires:202610272000;;804177

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 27 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure centered over northern ontario this morning 
shifts east to the saint lawrence seaway this evening, with 30.4 
inch ridging over lake superior weakening to 30.1 inches through 
tonight. a developing 29.8 inch colorado low lifts through the 
plains on wednesday, eventually moving across lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday, 
strengthening to 30.4 inches over the lower great lakes on saturday 
as ridging of 30.1 to 30.2 inches lingers over lake superior through 
the weekend.




lsz265-272000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt tue oct 27 2026

.rest of today...southeast winds 15 to 25 knots increasing to
20 to 30 knots late. a chance of showers. waves calm to 2 feet
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...south winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. a chance of showers through midnight.
waves subsiding to 1 to 3 feet. 
.wednesday...south winds 10 to 20 knots becoming west 5 to
15 knots in the afternoon, then backing east late. waves
subsiding to calm to 2 feet. 
.wednesday night...south winds 15 to 25 knots becoming west 20 to
30 knots after midnight. a slight chance of thunderstorms through
midnight. showers. waves building to 2 to 4 feet. 
.thursday...west winds 20 to 30 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.thursday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.friday...west winds 5 to 15 knots backing southeast. waves calm
to 2 feet. 
.saturday...southeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202610272000;;804178

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 27 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure centered over northern ontario this morning 
shifts east to the saint lawrence seaway this evening, with 30.4 
inch ridging over lake superior weakening to 30.1 inches through 
tonight. a developing 29.8 inch colorado low lifts through the 
plains on wednesday, eventually moving across lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday, 
strengthening to 30.4 inches over the lower great lakes on saturday 
as ridging of 30.1 to 30.2 inches lingers over lake superior through 
the weekend.




lsz266-272000-
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-
1001 am edt tue oct 27 2026

.rest of today...southeast winds 10 to 20 knots increasing to
20 to 30 knots. a chance of showers. waves calm to 2 feet
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...southeast winds 20 to 30 knots veering south after
midnight, then diminishing to 15 to 25 knots late. a chance of
showers through midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...south winds 15 to 25 knots becoming southwest 10 to
20 knots in the afternoon, then backing south late. waves
subsiding to calm to 2 feet. 
.wednesday night...south winds 15 to 25 knots becoming west 20 to
30 knots after midnight. showers. a slight chance of
thunderstorms after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.friday...northwest winds 5 to 15 knots veering east. waves
subsiding to calm to 2 feet. 
.saturday...southeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202610272000;;804175

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 27 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure centered over northern ontario this morning 
shifts east to the saint lawrence seaway this evening, with 30.4 
inch ridging over lake superior weakening to 30.1 inches through 
tonight. a developing 29.8 inch colorado low lifts through the 
plains on wednesday, eventually moving across lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday, 
strengthening to 30.4 inches over the lower great lakes on saturday 
as ridging of 30.1 to 30.2 inches lingers over lake superior through 
the weekend.




lsz263-272000-
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-
1001 am edt tue oct 27 2026

.rest of today...southeast winds 10 to 20 knots increasing to
15 to 25 knots late. rain showers. waves 1 to 3 feet building to
2 to 4 feet. 
.tonight...southeast winds 10 to 20 knots veering southwest late.
a slight chance of showers. waves 2 to 4 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers
by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots veering northwest
after midnight. showers and a slight chance of thunderstorms
through midnight, then a slight chance of showers after midnight.
waves building to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east. waves calm to
2 feet. 
.saturday...southeast winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202610272000;;804174

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 27 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure centered over northern ontario this morning 
shifts east to the saint lawrence seaway this evening, with 30.4 
inch ridging over lake superior weakening to 30.1 inches through 
tonight. a developing 29.8 inch colorado low lifts through the 
plains on wednesday, eventually moving across lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday, 
strengthening to 30.4 inches over the lower great lakes on saturday 
as ridging of 30.1 to 30.2 inches lingers over lake superior through 
the weekend.




lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt tue oct 27 2026 /901 am cdt tue oct 27 2026/

.rest of today...east winds 15 to 25 knots. showers. waves 2 to
4 feet building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.tonight...southeast winds 10 to 20 knots becoming southwest 5 to
15 knots after midnight. a slight chance of showers. waves
subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing east late. a chance of
showers by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. showers and a slight chance of
thunderstorms through midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds less than 10 knots becoming east 5 to
15 knots. waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202610272000;;804179

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 27 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure centered over northern ontario this morning 
shifts east to the saint lawrence seaway this evening, with 30.4 
inch ridging over lake superior weakening to 30.1 inches through 
tonight. a developing 29.8 inch colorado low lifts through the 
plains on wednesday, eventually moving across lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday, 
strengthening to 30.4 inches over the lower great lakes on saturday 
as ridging of 30.1 to 30.2 inches lingers over lake superior through 
the weekend.




lsz267-272000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt tue oct 27 2026

.rest of today...southeast winds 10 to 20 knots increasing to
20 to 30 knots. waves calm to 2 feet building to 3 to 6 feet
occasionally to 8 feet. 
.tonight...southeast winds 20 to 30 knots veering south after
midnight. a slight chance of showers through midnight. waves
subsiding to 2 to 4 feet. 
.wednesday...south winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.wednesday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. a chance of showers through
midnight, then showers and a slight chance of thunderstorms after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday...west winds 20 to 30 knots veering northwest by mid
afternoon. a slight chance of showers through early afternoon.
waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday night...northwest winds 15 to 25 knots. waves subsiding
to 2 to 4 feet. 
.friday...northwest winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.saturday...southeast winds 10 to 20 knots. waves calm to 2 feet.

$$

fzus63 kmqt 271401
glfls 
expires:202610272000;;804176

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue oct 27 2026

for waters beyond 5 nautical miles of shore on lake superior.

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

.synopsis...

30.5 inch high pressure centered over northern ontario this morning 
shifts east to the saint lawrence seaway this evening, with 30.4 
inch ridging over lake superior weakening to 30.1 inches through 
tonight. a developing 29.8 inch colorado low lifts through the 
plains on wednesday, eventually moving across lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday, 
strengthening to 30.4 inches over the lower great lakes on saturday 
as ridging of 30.1 to 30.2 inches lingers over lake superior through 
the weekend.




lsz264-272000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt tue oct 27 2026

.rest of today...southeast winds 5 to 15 knots increasing to
15 to 25 knots. a slight chance of rain showers by late morning,
then rain showers by mid afternoon. waves calm to 2 feet building
to 3 to 5 feet occasionally to 7 feet. 
.tonight...southeast winds 15 to 25 knots veering south after
midnight, then becoming southwest 10 to 20 knots late. a chance
of showers. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 
.wednesday...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots veering northwest
after midnight. showers through midnight, then a chance of
showers after midnight. waves building to 1 to 3 feet. 
.thursday...west winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east. waves calm to
2 feet. 
.saturday...southeast winds 5 to 15 knots veering south. a chance
of showers. waves calm to 2 feet. 

$$