fzus61 kbuf 212102
glflo 
expires:202511220400;;270598

open lake forecast for lake ontario
national weather service buffalo ny
402 pm est fri nov 21 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 29.2 inch surface low near james bay will swing a cold 
front across the lake this 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, sending 
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. the surface low will 
then track well north of the lake through wednesday.


loz063-220400-
lake ontario open waters from hamlin beach to sodus bay-
402 pm est fri nov 21 2025

.tonight...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 3 feet. 
.saturday...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...northwest winds 5 to 15 knots becoming
southwest. waves 1 to 2 feet. 
.sunday...southwest winds 15 to 25 knots becoming west. a chance
of rain. waves 1 to 3 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.sunday night...west winds 15 to 25 knots becoming northwest. a
chance of rain in the evening. waves 5 to 8 feet subsiding to
3 to 5 feet. waves occasionally around 10 feet. 
.monday...west winds 5 to 15 knots becoming south. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 10 to 15 knots becoming south. rain.
waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west to
30 knots. rain showers likely during the day, then a chance of
rain and snow showers wednesday night. waves 2 to 4 feet building
to 10 to 13 feet. waves occasionally around 16 feet. 

$$

fzus61 kbuf 212102
glflo 
expires:202511220400;;270599

open lake forecast for lake ontario
national weather service buffalo ny
402 pm est fri nov 21 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 29.2 inch surface low near james bay will swing a cold 
front across the lake this 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, sending 
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. the surface low will 
then track well north of the lake through wednesday.


loz064-065-220400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est fri nov 21 2025

.tonight...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...northwest winds 5 to 10 knots becoming
southwest. waves 2 feet or less. 
.sunday...southwest winds 15 to 25 knots becoming west. rain
likely. waves 1 to 3 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.sunday night...west winds 15 to 25 knots becoming northwest.
rain likely in the evening, then a chance of rain overnight.
waves 5 to 8 feet subsiding to 3 to 5 feet. waves occasionally
around 10 feet. 
.monday...northwest winds 5 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...southeast winds 15 to 20 knots becoming south. rain.
waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west and
increasing to 30 knots. rain showers likely during the day, then
rain and snow showers likely wednesday night. waves 3 to 5 feet
building to 9 to 13 feet. waves occasionally around 16 feet. 

$$

fzus61 kbuf 212102
glflo 
expires:202511220400;;270597

open lake forecast for lake ontario
national weather service buffalo ny
402 pm est fri nov 21 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 29.2 inch surface low near james bay will swing a cold 
front across the lake this 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, sending 
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. the surface low will 
then track well north of the lake through wednesday.


loz062-220400-
lake ontario open waters from the niagara river to hamlin beach-
402 pm est fri nov 21 2025

.tonight...northwest winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.saturday night...northwest winds 5 to 15 knots becoming
southwest. waves 2 feet or less. 
.sunday...southwest winds 15 to 25 knots becoming west. a chance
of rain. waves 1 to 3 feet building to 4 to 6 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.monday...west winds 5 to 10 knots becoming southeast. waves 1 to
3 feet subsiding to 1 foot or less. 
.tuesday...southeast winds 10 to 15 knots becoming southwest.
rain. waves 1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west and
increasing to 30 knots. a chance of rain showers during the day,
then a chance of rain and snow showers wednesday night. waves
3 to 5 feet building to 8 to 11 feet. waves occasionally around
14 feet. 

$$

fzus61 kcle 211952
glfle 
expires:202511220330;;267848

open lake forecast for lake erie
national weather service cleveland oh
252 pm est fri nov 21 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 southeast across lake erie later this 
evening. high pressure 30.20 inches will build over the great 
lakes on saturday. a warm front will lift across the lake 
saturday night, followed by another cold front passing through on
sunday. high pressure 30.30 inches will build over the lake 
sunday night into monday. 


lez162>164-220330-
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-
252 pm est fri nov 21 2025

.tonight...west winds 10 knots or less becoming north. a chance
of rain this evening, then a slight chance of rain after
midnight. waves 2 feet or less. 
.saturday...north winds 10 knots or less becoming west. waves
2 feet or less. 
.saturday night...southwest winds 10 knots or less increasing to
15 to 20 knots. waves 1 to 3 feet. 
.sunday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 1 to 3 feet. 
.sunday night...west winds 5 to 10 knots. waves 1 foot 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 west. rain during
the day, then a chance of rain tuesday night. waves 1 to 3 feet. 
.wednesday...west winds 15 to 25 knots increasing to 30 knots.
waves 3 to 5 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 

$$

fzus61 kcle 211952
glfle 
expires:202511220330;;267849

open lake forecast for lake erie
national weather service cleveland oh
252 pm est fri nov 21 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 southeast across lake erie later this 
evening. high pressure 30.20 inches will build over the great 
lakes on saturday. a warm front will lift across the lake 
saturday night, followed by another cold front passing through on
sunday. high pressure 30.30 inches will build over the lake 
sunday night into monday. 


lez165>167-220330-
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-
252 pm est fri nov 21 2025

.tonight...west winds 5 to 10 knots becoming north. a slight
chance of rain through the early overnight. waves 2 feet or less.
.saturday...north winds 5 to 10 knots becoming northwest. waves
2 feet or less. 
.saturday night...west winds 5 to 10 knots becoming southwest and
increasing to 15 to 20 knots. waves 1 foot or less building to
3 to 5 feet. 
.sunday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.sunday night...west winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. 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 3 to
5 feet subsiding to 2 to 4 feet. 
.wednesday...west winds to 30 knots. a chance of rain. waves 5 to
8 feet building to 8 to 11 feet. waves occasionally around
14 feet. 

$$

fzus61 kcle 211952
glfle 
expires:202511220330;;267850

open lake forecast for lake erie
national weather service cleveland oh
252 pm est fri nov 21 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 southeast across lake erie later this 
evening. high pressure 30.20 inches will build over the great 
lakes on saturday. a warm front will lift across the lake 
saturday night, followed by another cold front passing through on
sunday. high pressure 30.30 inches will build over the lake 
sunday night into monday. 


lez061-168-169-220330-
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-
252 pm est fri nov 21 2025

.tonight...west winds 5 to 15 knots becoming north. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.saturday...north winds 5 to 10 knots becoming northwest. waves
1 foot or less. 
.saturday night...west winds 5 to 15 knots becoming southwest
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.sunday...southwest winds 15 to 20 knots becoming west. waves
3 to 6 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 2 feet. 
.monday...southwest winds 5 to 15 knots becoming south. a chance
of rain monday night. waves 1 to 2 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. rain.
waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...west winds 15 to 25 knots increasing to 30 knots. a
chance of rain. waves 4 to 7 feet building to 8 to 12 feet. waves
occasionally around 15 feet. 

$$

fzus63 kdtx 212038
glfsc 
expires:202511220445;;269778

lake st clair forecast
national weather service detroit/pontiac mi
338 pm est fri nov 21 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...high pressure, 30.10 inches, will build into the
central great lakes through tomorrow. low pressure tracking
through northern ontario saturday evening will track a cold front
through the region saturday night. northwest wind gusts behind
the front sunday morning will reach into the 20 to 30 knot range.


lcz460-220445-
lake st clair-
338 pm est fri nov 21 2025

.tonight...northwest winds 10 to 15 knots becoming north  after 
midnight. mostly cloudy until early morning then clearing. waves 2
feet or less.
.saturday...north winds 10 to 15 knots becoming northwest 5 to 10
knots in the late morning and early afternoon...then becoming light
and variable late in the afternoon. mostly sunny. waves 2 feet or
less.
.saturday night...southwest winds 5 to 10 knots increasing to 15 to
20 knots. partly cloudy becoming mostly cloudy in the late evening
and early morning becoming mostly clear. waves 2 feet or less.
.sunday...west winds 15 to 20 knots diminishing to 10 to 15 knots in
the late morning and afternoon. mostly sunny. waves 2 feet or less.
.sunday night...west winds 5 to 10 knots. mostly clear. waves 2 feet
or less.
.monday...south winds 5 to 10 knots increasing to 10 to 15 knots in
the evening. mostly sunny becoming partly sunny in the afternoon
becoming mostly cloudy. waves 2 feet or less.
.tuesday...southwest winds 15 to 20 knots. light rain. waves 1 to 3
feet.
.wednesday...west winds to 30 knots. partly cloudy. a chance of
light rain. waves 2 to 4 feet. a small craft advisory may be needed.

$$

fzus63 kdtx 212038
glflh 
expires:202511220445;;269772

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm est fri nov 21 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...high pressure, 30.10 inches, will build into the
central great lakes through tomorrow. low pressure tracking
through northern ontario saturday evening will track a cold front
through the region saturday night. northwest wind gusts behind
the front sunday morning will reach into the 20 to 30 knot range.


lhz361>363-220445-
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-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
338 pm est fri nov 21 2025

.tonight...northwest winds 15 to 25 knots decreasing to 10 to 15 
knots after midnight. waves 4 to 6 feet. waves occasionally around
8 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and early afternoon...then backing
to the southwest late in the afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet in the afternoon. 
.saturday night...south winds 10 to 15 knots becoming southwest
15 to 20 knots in the late evening and overnight. a chance of
rain. waves 1 to 3 feet building to 3 to 5 feet in the late
evening and overnight. 
.sunday...west winds 20 to 25 knots decreasing to 15 to 20 knots
early in the afternoon. waves 4 to 6 feet. 
.sunday night...west winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. waves occasionally around 8 feet. 
.monday...southwest winds 10 to 15 knots backing to the south
late in the afternoon. rain likely late in the evening. waves
1 to 3 feet building to 2 to 4 feet late in the evening. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots in the late evening and early morning. rain likely...
then a chance of rain in the late evening and early morning.
waves 3 to 5 feet. 
.wednesday...west winds 15 to 20 knots increasing to 35 knot
gales. a chance of rain and snow...then snow likely in the late
evening and early morning. waves 4 to 6 feet building to 10 to
14 feet. waves occasionally around 18 feet. a gale warning may be
needed. 


$$

fzus63 kdtx 212038
glflh 
expires:202511220445;;269773

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm est fri nov 21 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...high pressure, 30.10 inches, will build into the
central great lakes through tomorrow. low pressure tracking
through northern ontario saturday evening will track a cold front
through the region saturday night. northwest wind gusts behind
the front sunday morning will reach into the 20 to 30 knot range.


lhz462>464-220445-
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-
338 pm est fri nov 21 2025

.tonight...northwest winds around 15 knots. waves 2 to 4 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then backing
to the west late in the afternoon. waves 2 to 4 feet subsiding to
1 to 3 feet in the afternoon. 
.saturday night...southwest winds 5 to 10 knots increasing to
15 to 20 knots in the late evening and overnight. waves 1 to
3 feet building to 3 to 5 feet after midnight. 
.sunday...west winds 15 to 20 knots. waves 3 to 5 feet. 
.sunday night...west winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight. 
.monday...southwest winds 10 to 15 knots backing to the south
late in the afternoon. rain likely late in the evening. waves
1 to 3 feet building to 2 to 4 feet late in the evening. 
.tuesday...south winds 15 to 20 knots decreasing to 10 to
15 knots until early evening...then veering to the southwest in
the late evening and early morning. rain early in the morning...
then rain likely early in the evening. a chance of rain in the
late evening and early morning. waves 3 to 5 feet. 
.wednesday...west winds 15 to 20 knots increasing to 35 knot
gales. a chance of rain. a chance of snow. waves 3 to 5 feet
building to 8 to 12 feet. waves occasionally around 15 feet. a
gale warning may be needed. 


$$

fzus63 kdtx 211435
glflh 
expires:202511212300;;255055

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 am est fri nov 21 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 early this morning, supporting moderate west-northwest
winds through the day. high pressure, 30.10 inches, then slides
across the central great lakes to close out the week.


lhz363-462-212300-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
935 am est fri nov 21 2025

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


$$

fzus63 kdtx 211435
glflh 
expires:202511212300;;255054

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 am est fri nov 21 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 early this morning, supporting moderate west-northwest
winds through the day. high pressure, 30.10 inches, then slides
across the central great lakes to close out the week.


lhz361-362-212300-
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-
935 am est fri nov 21 2025

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


$$

fzus63 kdtx 211435
glflh 
expires:202511212300;;255056

open lake forecast for lake huron
national weather service detroit/pontiac mi
935 am est fri nov 21 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 early this morning, supporting moderate west-northwest
winds through the day. high pressure, 30.10 inches, then slides
across the central great lakes to close out the week.


lhz463-464-212300-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
935 am est fri nov 21 2025

.rest of today...west winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 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
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 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon.
.monday...west winds 5 to 10 knots becoming south 10 to 15 knots.
rain likely in the late evening and early morning. waves 1 to
3 feet building to 2 to 4 feet in the late evening and early
morning. 
.tuesday...southeast winds 15 to 20 knots becoming south 10 to
15 knots until early morning. rain until afternoon...then rain
likely until early morning. waves 3 to 5 feet. 


$$

fzus63 kmkx 212038
glflm 
expires:202511220415;;269776

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 pm cst fri nov 21 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...

light to modest northwest winds will continue through this 
evening as low pressure of 29.5 inches lingers in the hudson bay 
area, and high pressure of 30.1 inches builds into wisconsin. 
high pressure builds overhead late tonight into saturday morning,
bringing light and variable winds. for saturday afternoon, expect
breezy southwest winds to develop as weak low pressure of 29.7 
inches progresses through lake superior. winds shift northwesterly
saturday night into sunday with the passage of a cold front. high
pressure briefly returns sunday night, followed by modest south 
winds developing monday and monday night, as low pressure moves 
into the upper mississippi river valley. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-220415-
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-
238 pm cst fri nov 21 2025

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 1 to 3 ft. 
.saturday...northwest winds 5 to 10 kt backing to southwest 10 to
15 kt late in the morning, then increasing to 10 to 20 kt early
in the afternoon increasing to 15 to 25 kt late. waves 1 to 3 ft
building to 3 to 5 ft. 
.saturday night...southwest winds 15 to 25 kt becoming northwest.
waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft. 
.sunday...northwest winds 15 to 25 kt becoming west 10 to 15 kt
in the afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding
to 3 to 5 ft. 
.sunday night...southwest winds 10 to 15 kt becoming south. waves
1 to 3 ft. 
.monday...south winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft. 
.monday night...south winds 10 to 20 kt. showers. waves 4 to 6 ft
occasionally to 8 ft. 
.tuesday...south winds 10 to 20 kt becoming southwest. showers
likely. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...west gales to 35 kt. waves 8 to 12 ft occasionally
to 16 ft.  

$$

fzus63 kmkx 212038
glflm 
expires:202511220415;;269775

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
238 pm cst fri nov 21 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...

light to modest northwest winds will continue through this 
evening as low pressure of 29.5 inches lingers in the hudson bay 
area, and high pressure of 30.1 inches builds into wisconsin. 
high pressure builds overhead late tonight into saturday morning,
bringing light and variable winds. for saturday afternoon, expect
breezy southwest winds to develop as weak low pressure of 29.7 
inches progresses through lake superior. winds shift northwesterly
saturday night into sunday with the passage of a cold front. high
pressure briefly returns sunday night, followed by modest south 
winds developing monday and monday night, as low pressure moves 
into the upper mississippi river valley. 


lmz261-362-364-366-563-565-567-868-220415-
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-
238 pm cst fri nov 21 2025

sheboygan wi to pentwater mi north...

.tonight...northwest winds 10 to 20 kt diminishing to 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...west winds 5 to 10 kt becoming southwest 10 to 15 kt
late in the morning, then increasing to 10 to 20 kt early in the
afternoon increasing to 30 kt late. slight chance of rain showers
in the afternoon. waves 1 to 2 ft building to 3 to 5 ft. 
.saturday night...southwest winds to 30 kt becoming northwest.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday...northwest winds to 30 kt becoming west 10 to 20 kt in
the afternoon. waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft. 
.sunday night...southwest winds 10 to 15 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt. waves 2 to 4 ft building to
3 to 5 ft. 
.monday night...south winds 10 to 20 kt. rain showers likely.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...south winds 10 to 20 kt becoming southwest. rain
showers likely. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...west winds to 30 kt increasing to gales to 35 kt.
chance of snow and rain showers. waves 7 to 10 ft occasionally to
13 ft.  

$$

fzus63 kmqt 212107
glfls 
expires:202511220515;;271211

open lake forecast for lake superior
national weather service marquette mi
407 pm est fri nov 21 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 of around 30.0 inches tonight will move into the lower 
great lakes through saturday as a 29.8 inch trough moves over lake 
superior in the afternoon and evening. 30.0 inch ridging follows 
sunday into monday. troughing of at least 29.7 inches begins to 
organize in the plains monday, then moves into the great lakes 
tuesday through wednesday.



lsz162-220515-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
407 pm est fri nov 21 2025 /307 pm cst fri nov 21 2025/

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northwest winds 5 to 15 knots backing west by
midnight, then backing south late. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots becoming southwest 15 to
25 knots by late morning, then veering west by mid afternoon. a
chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots backing southwest in the
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots backing east after
midnight. rain showers likely. waves calm to 2 feet. 
.tuesday...west winds 20 to 30 knots increasing to gales to
35 knots. rain showers likely, then a chance of snow showers.
waves building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 35 knots veering northwest. a chance
of snow showers. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 212107
glfls 
expires:202511220515;;271212

open lake forecast for lake superior
national weather service marquette mi
407 pm est fri nov 21 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 of around 30.0 inches tonight will move into the lower 
great lakes through saturday as a 29.8 inch trough moves over lake 
superior in the afternoon and evening. 30.0 inch ridging follows 
sunday into monday. troughing of at least 29.7 inches begins to 
organize in the plains monday, then moves into the great lakes 
tuesday through wednesday.



lsz263-220515-
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-
407 pm est fri nov 21 2025

.late this afternoon...northwest winds 5 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by late morning, then becoming west 15 to 25 knots by
mid afternoon. a chance of snow showers in the morning. a chance
of rain showers. snow showers likely in the afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.saturday night...west winds 15 to 25 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...west winds 15 to 25 knots. waves subsiding to 1 to
3 feet. 
.sunday night...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots backing southeast after
midnight. rain showers likely. waves calm to 2 feet. 
.tuesday...west winds 20 to 30 knots increasing to gales to
40 knots. rain showers likely, then a chance of snow showers.
waves building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...west gales to 40 knots veering northwest. a chance
of snow showers. waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 212107
glfls 
expires:202511220515;;271213

open lake forecast for lake superior
national weather service marquette mi
407 pm est fri nov 21 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 of around 30.0 inches tonight will move into the lower 
great lakes through saturday as a 29.8 inch trough moves over lake 
superior in the afternoon and evening. 30.0 inch ridging follows 
sunday into monday. troughing of at least 29.7 inches begins to 
organize in the plains monday, then moves into the great lakes 
tuesday through wednesday.



lsz264-220515-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
407 pm est fri nov 21 2025

.late this afternoon...northwest winds 10 to 20 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then becoming west less than 10 knots late.
waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 10 to
20 knots by late morning, then becoming southwest 15 to 25 knots
by mid afternoon. a chance of snow showers in the morning. a
chance of rain showers. snow showers likely in the afternoon.
waves building to 2 to 4 feet. 
.saturday night...west winds 15 to 25 knots becoming northwest
20 to 30 knots by midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.sunday...west winds 15 to 25 knots. waves subsiding to 2 to
4 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. waves calm to 2 feet. 
.monday night...south winds 5 to 15 knots backing southeast after
midnight. a chance of rain showers in the evening, then rain
showers likely after midnight. waves building to 1 to 3 feet. 
.tuesday...southeast winds 20 to 30 knots becoming west gales to
40 knots. rain showers likely. a chance of snow showers. waves
building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest gales to 40 knots. a chance of snow
showers. waves building to 7 to 11 feet occasionally to 14 feet. 

$$

fzus63 kmqt 212107
glfls 
expires:202511220515;;271214

open lake forecast for lake superior
national weather service marquette mi
407 pm est fri nov 21 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 of around 30.0 inches tonight will move into the lower 
great lakes through saturday as a 29.8 inch trough moves over lake 
superior in the afternoon and evening. 30.0 inch ridging follows 
sunday into monday. troughing of at least 29.7 inches begins to 
organize in the plains monday, then moves into the great lakes 
tuesday through wednesday.



lsz265-220515-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
407 pm est fri nov 21 2025

.late this afternoon...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...northwest winds 10 to 20 knots backing west late.
waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 20 to
30 knots. a chance of snow showers. a chance of rain showers in
the afternoon. waves building to 2 to 4 feet. 
.saturday night...west winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible by
midnight, then veering northwest late. waves subsiding to 1 to
3 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.sunday...west winds 20 to 30 knots diminishing to 15 to 25 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. waves calm to 2 feet. 
.monday night...south winds 10 to 20 knots backing southeast
after midnight. rain showers likely. waves calm to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming west gales to
40 knots. rain showers likely. snow showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 45 knots. snow showers likely. waves
building to 5 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 212107
glfls 
expires:202511220515;;271215

open lake forecast for lake superior
national weather service marquette mi
407 pm est fri nov 21 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 of around 30.0 inches tonight will move into the lower 
great lakes through saturday as a 29.8 inch trough moves over lake 
superior in the afternoon and evening. 30.0 inch ridging follows 
sunday into monday. troughing of at least 29.7 inches begins to 
organize in the plains monday, then moves into the great lakes 
tuesday through wednesday.



lsz266-220515-
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-
407 pm est fri nov 21 2025

.late this afternoon...northwest winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots becoming south 15 to
25 knots by late morning, then increasing to 20 to 30 knots by
mid afternoon. a slight chance of snow showers in the morning,
then rain showers, possibly mixed with snow in the afternoon.
waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...west winds 20 to 30 knots veering northwest by
midnight, then increasing to 30 knots with a few gale force gusts
to 35 knots possible late. a chance of rain showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.sunday...northwest winds 20 to 30 knots becoming west 15 to
25 knots in the afternoon. a slight chance of rain showers in the
morning. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday night...west winds 10 to 20 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.monday...south winds 10 to 20 knots. waves building to 1 to
3 feet. 
.monday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of rain showers in the evening,
then rain showers likely after midnight. waves 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming west gales to
35 knots. rain showers. snow showers likely. waves building to
6 to 9 feet occasionally to 11 feet. 
.wednesday...west gales to 40 knots veering northwest. snow
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet. 

$$

fzus63 kmqt 212107
glfls 
expires:202511220515;;271216

open lake forecast for lake superior
national weather service marquette mi
407 pm est fri nov 21 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 of around 30.0 inches tonight will move into the lower 
great lakes through saturday as a 29.8 inch trough moves over lake 
superior in the afternoon and evening. 30.0 inch ridging follows 
sunday into monday. troughing of at least 29.7 inches begins to 
organize in the plains monday, then moves into the great lakes 
tuesday through wednesday.



lsz267-220515-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
407 pm est fri nov 21 2025

.late this afternoon...northwest winds 20 to 30 knots. isolated
rain and snow showers. waves 4 to 7 feet occasionally to 9 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. isolated snow showers. waves subsiding to 1 to
3 feet. 
.saturday...west winds 10 to 20 knots becoming southwest 15 to
25 knots by late morning, then backing south by mid afternoon.
rain showers, possibly mixed with snow in the afternoon. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots veering west by
midnight, then becoming northwest to 30 knots with a few gale
force gusts to 35 knots possible late. rain showers likely in the
evening, then a chance of rain showers after midnight. waves
building to 7 to 10 feet occasionally to 13 feet. 
.sunday...northwest gales to 35 knots becoming west 15 to
25 knots in the afternoon. a chance of rain showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday night...west winds 10 to 20 knots backing southwest after
midnight. waves subsiding to 1 to 3 feet. 
.monday...south winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.monday night...south winds 10 to 20 knots backing southeast
after midnight. a chance of rain showers in the evening, then
rain showers after midnight. waves building to 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming west 20 to
30 knots. rain showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...west gales to 40 knots. rain showers. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet. 

$$