fzus61 kbuf 210302
glflo 
expires:202511211000;;227573

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu nov 20 2025

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 30.3 inch high over the lower great lakes will slide 
out across new england through tonight. a 29.5 inch surface low near 
james bay will swing a cold front east across tomorrow afternoon and 
evening, with a 30.1 inch high building over the ohio valley and 
lower great lakes saturday. a 29.5 inch low will then move from 
northern ontario to james bay sunday, while pushing its cold front 
across the lake through the afternoon hours. a 30.2 inch high is 
then forecast to build across the ohio valley monday. on tuesday a 
29.5 inch low to the north of lake superior will swing a cold front 
across the lake by tuesday night.


loz064-065-211000-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 pm est thu nov 20 2025

.overnight...south winds 10 to 15 knots becoming southwest
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.friday...southwest winds 15 to 25 knots becoming west. a chance
of showers late in the morning. waves 3 to 6 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.friday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet. 
.saturday night...northwest winds 5 to 10 knots becoming west.
waves 2 feet or less. 
.sunday...southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet building to
3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming southeast.
waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 15 to 25 knots becoming south. rain
likely during the day, then showers tuesday night. waves 2 to
4 feet building to 3 to 6 feet. 

$$

fzus61 kbuf 210302
glflo 
expires:202511211000;;227572

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu nov 20 2025

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 30.3 inch high over the lower great lakes will slide 
out across new england through tonight. a 29.5 inch surface low near 
james bay will swing a cold front east across tomorrow afternoon and 
evening, with a 30.1 inch high building over the ohio valley and 
lower great lakes saturday. a 29.5 inch low will then move from 
northern ontario to james bay sunday, while pushing its cold front 
across the lake through the afternoon hours. a 30.2 inch high is 
then forecast to build across the ohio valley monday. on tuesday a 
29.5 inch low to the north of lake superior will swing a cold front 
across the lake by tuesday night.


loz063-211000-
lake ontario open waters from hamlin beach to sodus bay-
1002 pm est thu nov 20 2025

.overnight...south winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 6 feet. 
.friday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...northwest winds 5 to 10 knots becoming west.
waves 1 to 2 feet. 
.sunday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming southeast.
waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 15 to 20 knots becoming south. rain
likely during the day, then showers likely tuesday night. waves
2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to
4 feet. 

$$

fzus61 kbuf 210302
glflo 
expires:202511211000;;227571

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu nov 20 2025

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 30.3 inch high over the lower great lakes will slide 
out across new england through tonight. a 29.5 inch surface low near 
james bay will swing a cold front east across tomorrow afternoon and 
evening, with a 30.1 inch high building over the ohio valley and 
lower great lakes saturday. a 29.5 inch low will then move from 
northern ontario to james bay sunday, while pushing its cold front 
across the lake through the afternoon hours. a 30.2 inch high is 
then forecast to build across the ohio valley monday. on tuesday a 
29.5 inch low to the north of lake superior will swing a cold front 
across the lake by tuesday night.


loz062-211000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est thu nov 20 2025

.overnight...southwest winds 5 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming west. waves
3 to 6 feet. 
.friday night...west winds 10 to 15 knots becoming northwest.
waves 2 to 4 feet. 
.saturday...northwest winds 5 to 15 knots. waves 1 to 2 feet. 
.saturday night...northwest winds 5 to 10 knots becoming
southwest. waves around 1 foot. 
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.monday...west winds 10 to 15 knots becoming southeast. a chance
of showers monday night. waves 1 to 3 feet. 
.tuesday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. rain during the day, then showers likely tuesday
night. waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kcle 210239
glfle 
expires:202511210915;;227141

open lake forecast for lake erie
national weather service cleveland oh
939 pm est thu nov 20 2025

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move east across lake erie late friday and 
friday evening with high pressure 30.20 inches building over the 
great lakes in its wake on saturday. a warm front lift across the 
lake late saturday into sunday, followed by another cold front on 
late sunday into early monday.


lez162>164-210915-
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-
939 pm est thu nov 20 2025

.overnight...southwest winds 5 to 15 knots. waves 2 feet or
less. 
.friday...southwest winds 5 to 10 knots becoming west. waves
2 feet or less. 
.friday night...northwest winds 5 to 15 knots becoming north.
waves 1 to 3 feet. 
.saturday...north winds 5 to 15 knots becoming northwest less
than 10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.saturday night...west winds 10 knots or less becoming southwest
10 to 15 knots. waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.monday...south winds 5 to 15 knots becoming southeast. rain
likely monday night. waves 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming southwest. rain
during the day, then a chance of rain tuesday night. waves 1 to
3 feet. 

$$

fzus61 kcle 210239
glfle 
expires:202511210915;;227142

open lake forecast for lake erie
national weather service cleveland oh
939 pm est thu nov 20 2025

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move east across lake erie late friday and 
friday evening with high pressure 30.20 inches building over the 
great lakes in its wake on saturday. a warm front lift across the 
lake late saturday into sunday, followed by another cold front on 
late sunday into early monday.


lez165>167-210915-
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-
939 pm est thu nov 20 2025

.overnight...southwest winds 10 to 15 knots increasing to
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.friday...southwest winds 10 to 15 knots becoming west. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...northwest winds 10 to 15 knots becoming north.
waves 1 to 3 feet. 
.saturday...north winds 5 to 15 knots becoming northwest. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.saturday night...west winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.sunday...southwest winds 15 to 20 knots becoming west 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming southeast. rain
likely monday night. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. rain
during the day, then a chance of rain tuesday night. waves 2 to
4 feet building to 3 to 5 feet. 

$$

fzus61 kcle 210239
glfle 
expires:202511210915;;227143

open lake forecast for lake erie
national weather service cleveland oh
939 pm est thu nov 20 2025

for waters beyond five nautical miles of shore on lake erie

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

.synopsis...
a cold front will move east across lake erie late friday and 
friday evening with high pressure 30.20 inches building over the 
great lakes in its wake on saturday. a warm front lift across the 
lake late saturday into sunday, followed by another cold front on 
late sunday into early monday.


lez061-168-169-210915-
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-
939 pm est thu nov 20 2025

.overnight...southwest winds 10 to 15 knots increasing to
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 5 feet. 
.friday night...west winds 10 to 15 knots becoming north. waves
2 to 4 feet subsiding to 1 to 2 feet. 
.saturday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet subsiding to 1 foot or less. 
.saturday night...northwest winds 5 to 15 knots becoming
southwest. waves 2 feet or less. 
.sunday...southwest winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.monday...west winds 5 to 15 knots becoming southeast. a chance
of rain monday night. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. rain. waves 2 to 4 feet building to 3 to 5 feet. 

$$

fzus63 kdtx 210254
glfsc 
expires:202511211100;;227213

lake st clair forecast
national weather service detroit/pontiac mi
954 pm est thu nov 20 2025

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 cold front, 29.90 inches, tracks across the
region tonight into early friday morning, supporting moderate
west-northwest winds for the day friday. high pressure, 30.10
inches, then slides across the central great lakes to close out
the week.


lcz460-211100-
lake st clair-
954 pm est thu nov 20 2025

.rest of tonight...southwest winds 5 to 10 knots. mostly cloudy.
waves 2 feet or less.
.friday...west winds 5 to 10 knots veering to the northwest late in
the afternoon. partly sunny. waves 2 feet or less.
.friday night...north winds 5 to 10 knots increasing to 10 to 15
knots after midnight. partly cloudy becoming mostly cloudy in the
late evening and early morning becoming partly cloudy. waves 2 feet
or less.
.saturday...north winds 10 to 15 knots becoming northwest 5 to 10
knots in the late morning and afternoon. mostly sunny. waves 2 feet
or less.
.saturday night...light and variable winds becoming southwest 10 to
15 knots. partly cloudy. waves 2 feet or less.
.sunday...west winds 10 to 15 knots. mostly clear. waves 2 feet or
less.
.monday...southeast winds 10 to 15 knots. partly cloudy. a chance of
light rain. waves 2 feet or less.
.tuesday...southwest winds 15 to 20 knots. light rain. waves 1 to 3
feet.

$$

fzus63 kdtx 210253
glflh 
expires:202511211100;;227210

open lake forecast for lake huron
national weather service detroit/pontiac mi
953 pm est thu nov 20 2025

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 weak cold front, 29.90 inches, tracks across the
region tonight into early friday morning, supporting moderate
west-northwest winds for the day friday. high pressure, 30.10
inches, then slides across the central great lakes to close out
the week.


lhz363-462-211100-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
953 pm est thu nov 20 2025

.rest of tonight...southwest winds 15 to 20 knots. sprinkles.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.friday...west winds 10 to 15 knots. waves 3 to 5 feet. 
.friday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 3 to 5 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the afternoon. 
.saturday night...southwest winds 5 to 10 knots increasing to
15 to 20 knots. waves 1 to 3 feet building to 3 to 5 feet after
midnight. 
.sunday...west winds 15 to 20 knots decreasing to 5 to 10 knots.
waves 3 to 5 feet. 
.monday...west winds 5 to 10 knots backing to the southwest in
the late morning and early afternoon...then becoming south 10 to
15 knots until early morning. a chance of rain in the late
evening and early morning. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday...southeast winds 10 to 15 knots becoming south 15 to
20 knots until early evening...then veering to the southwest in
the late evening and early morning. a chance of rain early in the
morning...then rain likely until early evening. a chance of rain
in the late evening and early morning. waves 2 to 4 feet building
to 3 to 5 feet. 


$$

fzus63 kdtx 210253
glflh 
expires:202511211100;;227211

open lake forecast for lake huron
national weather service detroit/pontiac mi
953 pm est thu nov 20 2025

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 weak cold front, 29.90 inches, tracks across the
region tonight into early friday morning, supporting moderate
west-northwest winds for the day friday. high pressure, 30.10
inches, then slides across the central great lakes to close out
the week.


lhz463-464-211100-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
953 pm est thu nov 20 2025

.rest of tonight...southwest winds 10 to 15 knots. sprinkles.
waves 2 to 4 feet. 
.friday...west winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...northwest winds 10 to 15 knots. waves 2 to 4 feet
building to 3 to 5 feet in the late evening and overnight. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet early in the afternoon. 
.saturday night...west winds 5 to 10 knots becoming southwest
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet building to 2 to 4 feet after midnight. 
.sunday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
late in the evening. waves 2 to 4 feet. 
.monday...west winds 5 to 10 knots becoming south 10 to 15 knots
until early evening...then backing to the southeast in the late
evening and early morning. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots veering to the southwest in
the late evening and early morning. rain until afternoon...then
rain likely early in the evening. a chance of rain in the late
evening and early morning. waves 2 to 4 feet. 


$$

fzus63 kdtx 210253
glflh 
expires:202511211100;;227209

open lake forecast for lake huron
national weather service detroit/pontiac mi
953 pm est thu nov 20 2025

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 weak cold front, 29.90 inches, tracks across the
region tonight into early friday morning, supporting moderate
west-northwest winds for the day friday. high pressure, 30.10
inches, then slides across the central great lakes to close out
the week.


lhz361-362-211100-
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-
953 pm est thu nov 20 2025

.rest of tonight...southwest winds 15 to 20 knots. a chance of
showers. waves 4 to 6 feet. waves occasionally around 8 feet. 
.friday...west winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.friday night...northwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday...northwest winds 5 to 10 knots backing to the west
early in the afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon. 
.saturday night...southwest winds 5 to 10 knots increasing to
10 to 15 knots in the late evening and overnight. a chance of
rain in the evening. waves 1 to 3 feet building to 3 to 5 feet
after midnight. 
.sunday...west winds 15 to 20 knots becoming northwest 5 to
10 knots. waves 3 to 5 feet. 
.monday...west winds 5 to 10 knots backing to the southwest in
the late morning and early afternoon...then becoming south 10 to
15 knots until early morning. a chance of rain in the late
evening and early morning. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday...southeast winds 10 to 15 knots. rain likely...then a
chance of rain in the late evening and early morning. waves 1 to
3 feet building to 3 to 5 feet. 


$$

fzus63 kmkx 210241
glflm 
expires:202511211015;;227163

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
841 pm cst thu nov 20 2025

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 weak cold front over western wisconsin this evening will slowly
move across lake michigan tonight. modest southwest winds will 
shift northwesterly and continue through friday. light to modest 
north winds friday night will become light and variable saturday 
morning when high pressure moves across the region. winds will 
become southwesterly again saturday afternoon and evening, then 
westerly late saturday night and sunday with the passage of 
another weak canadian cold front.


lmz080-669-671-673-675-777-779-870-872-874-876-878-211015-
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-
841 pm cst thu nov 20 2025

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 10 to 20 kt becoming
northwest. slight chance of drizzle through early evening. waves
2 to 4 ft. 
.friday...northwest winds 10 to 20 kt becoming north 10 to 15 kt.
slight chance of drizzle in the afternoon. waves 2 to 4 ft. 
.friday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 2 to 4 ft. 
.saturday...north winds 5 to 10 kt backing to southwest 10 to
20 kt in the afternoon. waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 20 kt becoming west.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds 10 to 20 kt. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft. 
.sunday night...southwest winds 5 to 10 kt becoming south 10 to
15 kt. waves 1 to 3 ft. 
.monday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt becoming southwest. rain
likely. waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 210241
glflm 
expires:202511211015;;227162

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
841 pm cst thu nov 20 2025

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 weak cold front over western wisconsin this evening will slowly
move across lake michigan tonight. modest southwest winds will 
shift northwesterly and continue through friday. light to modest 
north winds friday night will become light and variable saturday 
morning when high pressure moves across the region. winds will 
become southwesterly again saturday afternoon and evening, then 
westerly late saturday night and sunday with the passage of 
another weak canadian cold front.


lmz261-362-364-366-563-565-567-868-211015-
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-
841 pm cst thu nov 20 2025

sheboygan wi to pentwater mi north...

.rest of tonight...west winds 15 to 25 kt becoming northwest
10 to 20 kt. slight chance of rain and drizzle through early
evening. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.friday...west winds 10 to 20 kt becoming northwest. waves 2 to
4 ft. 
.friday night...northwest winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft. 
.saturday night...southwest winds 15 to 25 kt becoming west.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday...west winds 10 to 20 kt. waves 3 to 5 ft subsiding to
1 to 3 ft. 
.sunday night...west winds 10 to 15 kt becoming southwest 5 to
10 kt. waves 1 to 2 ft. 
.monday...south winds 10 to 20 kt. waves 1 to 3 ft building to
2 to 4 ft. 
.tuesday...south winds 10 to 20 kt. rain likely. waves 3 to 5 ft.
 

$$

fzus63 kmqt 210323
glfls 
expires:202511211130;;228768

open lake forecast for lake superior
national weather service marquette mi
1023 pm est thu nov 20 2025

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...

weak ridging over the lake this evening will build to 30.1 inches 
through satuday morning as a ridge of high pressure over the 
northern plains and upper midwest builds into the western great 
lakes. the ridge will push east saturday afternoon as a 29.8 inch 
trough moves over lake superior saturday night into sunday. 
thereafter a 30.1 inch high pressure rebuilds over the great lakes 
on sunday night into monday, ahead of a 29.7 low that will arrive 
tuesday.



lsz267-211130-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1023 pm est thu nov 20 2025

.rest of tonight...west winds 20 to 30 knots veering northwest by
midnight, then backing west late. a chance of rain showers late
in the evening. waves 3 to 6 feet occasionally to 8 feet building
to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible. a chance of
rain showers, possibly mixed with snow. waves building to 5 to
9 feet occasionally to 11 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. a slight chance of snow showers in
the evening. waves subsiding to 1 to 3 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. a chance of rain showers, possibly mixed with snow in
the afternoon. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of rain showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...northwest winds 10 to 20 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 10 to 20 knots backing southeast. a chance
of rain showers. waves building to 1 to 3 feet. 
.tuesday...southeast winds 15 to 25 knots becoming southwest
20 to 30 knots. rain showers. waves building to 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 210323
glfls 
expires:202511211130;;228763

open lake forecast for lake superior
national weather service marquette mi
1023 pm est thu nov 20 2025

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...

weak ridging over the lake this evening will build to 30.1 inches 
through satuday morning as a ridge of high pressure over the 
northern plains and upper midwest builds into the western great 
lakes. the ridge will push east saturday afternoon as a 29.8 inch 
trough moves over lake superior saturday night into sunday. 
thereafter a 30.1 inch high pressure rebuilds over the great lakes 
on sunday night into monday, ahead of a 29.7 low that will arrive 
tuesday.



lsz162-211130-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1023 pm est thu nov 20 2025 /923 pm cst thu nov 20 2025/

.rest of tonight...west winds 15 to 25 knots. waves 1 to 3 feet
building to 3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 10 to 20 knots. waves subsiding to calm
to 2 feet. 
.friday night...northwest winds 5 to 15 knots backing southwest
late. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. a slight chance of rain showers in the
afternoon. waves calm to 2 feet. 
.saturday night...west winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots backing southeast. a chance
of rain showers. waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain showers. a chance of snow showers.
waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 210323
glfls 
expires:202511211130;;228764

open lake forecast for lake superior
national weather service marquette mi
1023 pm est thu nov 20 2025

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...

weak ridging over the lake this evening will build to 30.1 inches 
through satuday morning as a ridge of high pressure over the 
northern plains and upper midwest builds into the western great 
lakes. the ridge will push east saturday afternoon as a 29.8 inch 
trough moves over lake superior saturday night into sunday. 
thereafter a 30.1 inch high pressure rebuilds over the great lakes 
on sunday night into monday, ahead of a 29.7 low that will arrive 
tuesday.



lsz263-211130-
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-
1023 pm est thu nov 20 2025

.rest of tonight...west winds 10 to 20 knots increasing to 15 to
25 knots by midnight. waves 3 to 5 feet occasionally to 7 feet
building to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots becoming west less
than 10 knots late. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. a chance of rain showers, possibly
mixed with snow in the afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots. waves building to
2 to 4 feet. 
.sunday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.sunday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots. a chance of rain showers.
waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming west gales to
35 knots. a chance of rain showers. a chance of snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 210323
glfls 
expires:202511211130;;228765

open lake forecast for lake superior
national weather service marquette mi
1023 pm est thu nov 20 2025

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...

weak ridging over the lake this evening will build to 30.1 inches 
through satuday morning as a ridge of high pressure over the 
northern plains and upper midwest builds into the western great 
lakes. the ridge will push east saturday afternoon as a 29.8 inch 
trough moves over lake superior saturday night into sunday. 
thereafter a 30.1 inch high pressure rebuilds over the great lakes 
on sunday night into monday, ahead of a 29.7 low that will arrive 
tuesday.



lsz264-211130-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1023 pm est thu nov 20 2025

.rest of tonight...northwest winds 10 to 20 knots becoming west
15 to 25 knots by midnight. waves 3 to 5 feet occasionally to
7 feet building to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.friday night...northwest winds 5 to 15 knots becoming west less
than 10 knots late. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 10 to
20 knots in the afternoon. a chance of rain showers, possibly
mixed with snow in the afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a slight chance of rain showers in the
evening. waves building to 3 to 5 feet occasionally to 7 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 5 to 15 knots. a chance of rain showers.
waves building to 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming west gales to
35 knots. a chance of rain showers, then rain showers, possibly
mixed with snow. waves building to 6 to 9 feet occasionally to
11 feet. 

$$

fzus63 kmqt 210323
glfls 
expires:202511211130;;228766

open lake forecast for lake superior
national weather service marquette mi
1023 pm est thu nov 20 2025

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...

weak ridging over the lake this evening will build to 30.1 inches 
through satuday morning as a ridge of high pressure over the 
northern plains and upper midwest builds into the western great 
lakes. the ridge will push east saturday afternoon as a 29.8 inch 
trough moves over lake superior saturday night into sunday. 
thereafter a 30.1 inch high pressure rebuilds over the great lakes 
on sunday night into monday, ahead of a 29.7 low that will arrive 
tuesday.



lsz265-211130-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1023 pm est thu nov 20 2025

.rest of tonight...northwest winds 20 to 30 knots backing west by
midnight. waves 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.friday night...northwest winds 10 to 20 knots becoming west 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 10 to
20 knots in the afternoon. a slight chance of rain showers,
possibly mixed with snow in the afternoon. waves calm to 2 feet. 
.saturday night...west winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a slight chance of rain showers in the
evening. waves building to 2 to 4 feet. 
.sunday...west winds 20 to 30 knots diminishing to 10 to 20 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 10 to 20 knots backing southwest after
midnight. waves calm to 2 feet. 
.monday...south winds 10 to 20 knots. a chance of rain showers.
waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming west gales to
35 knots. rain showers likely. snow showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 210323
glfls 
expires:202511211130;;228767

open lake forecast for lake superior
national weather service marquette mi
1023 pm est thu nov 20 2025

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...

weak ridging over the lake this evening will build to 30.1 inches 
through satuday morning as a ridge of high pressure over the 
northern plains and upper midwest builds into the western great 
lakes. the ridge will push east saturday afternoon as a 29.8 inch 
trough moves over lake superior saturday night into sunday. 
thereafter a 30.1 inch high pressure rebuilds over the great lakes 
on sunday night into monday, ahead of a 29.7 low that will arrive 
tuesday.



lsz266-211130-
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-
1023 pm est thu nov 20 2025

.rest of tonight...northwest winds 20 to 30 knots backing west
late. a slight chance of rain showers late in the evening. waves
3 to 6 feet occasionally to 8 feet building to 4 to 7 feet
occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. a slight chance of rain showers in the
morning. a slight chance of snow showers. waves building to 5 to
8 feet occasionally to 10 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. a slight chance of snow showers in the
evening. waves subsiding to 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 15 to
25 knots in the afternoon. a chance of rain showers, possibly
mixed with snow in the afternoon. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. a slight chance of rain showers in the evening.
waves building to 3 to 5 feet occasionally to 7 feet. 
.sunday...northwest winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.monday...south winds 10 to 20 knots. a chance of rain showers.
waves building to 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest 20 to
30 knots. rain showers likely. snow showers. waves building to
6 to 9 feet occasionally to 11 feet. 

$$