fzus61 kbuf 120302
glflo 
expires:202512121000;;425425

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu dec 11 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 28.9 inch low will remain over the canadian maritimes 
through friday before moving into the north atlantic by saturday. a 
30.1 inch high will build from the upper ohio valley friday to off 
the mid atlantic coast saturday. a 29.6 inch low will then move from 
just east of lake superior saturday to southern quebec by sunday 
where it will weaken to a 29.9 inch trough. a strong 30.8 inch high 
will then build from the mid mississippi valley sunday to the 
southeast states monday while weakening to 30.5 inches.


loz064-065-121000-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 pm est thu dec 11 2025

.overnight...northwest winds 20 to 25 knots becoming west.
waves 7 to 10 feet subsiding to 5 to 8 feet. waves occasionally
around 13 feet. 
.friday...west winds 15 to 25 knots. a chance of snow showers.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.friday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. a chance of snow showers. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.saturday...south winds 15 to 20 knots becoming west and
increasing to 30 knots. lake effect snow showers. waves 2 to
4 feet building to 10 to 13 feet. waves occasionally around
16 feet. 
.saturday night...west winds to 30 knots diminishing to 15 to
25 knots. lake effect snow showers. waves 10 to 13 feet subsiding
to 5 to 8 feet. waves occasionally around 16 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. lake
effect snow showers during the day, then a chance of snow showers
sunday night. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 
.monday...northwest winds 15 to 25 knots becoming west to
30 knots. a chance of snow showers during the day, then snow
showers monday night. waves 2 to 4 feet building to 8 to 11 feet.
waves occasionally around 14 feet. 
.tuesday...west winds 15 to 25 knots becoming south. snow showers
likely during the day. waves 7 to 10 feet subsiding to 3 to
6 feet. waves occasionally around 13 feet. 

$$

fzus61 kbuf 120302
glflo 
expires:202512121000;;425424

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu dec 11 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 28.9 inch low will remain over the canadian maritimes 
through friday before moving into the north atlantic by saturday. a 
30.1 inch high will build from the upper ohio valley friday to off 
the mid atlantic coast saturday. a 29.6 inch low will then move from 
just east of lake superior saturday to southern quebec by sunday 
where it will weaken to a 29.9 inch trough. a strong 30.8 inch high 
will then build from the mid mississippi valley sunday to the 
southeast states monday while weakening to 30.5 inches.


loz063-121000-
lake ontario open waters from hamlin beach to sodus bay-
1002 pm est thu dec 11 2025

.overnight...northwest winds 20 to 25 knots becoming west.
a chance of snow showers. waves 5 to 9 feet. waves occasionally
around 11 feet. 
.friday...west winds 15 to 25 knots. a chance of snow showers.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.friday night...west winds 15 to 20 knots becoming southwest. a
chance of snow showers overnight. waves 3 to 6 feet subsiding to
2 to 4 feet. 
.saturday...southwest winds 15 to 20 knots becoming west and
increasing to 30 knots. lake effect snow showers likely. waves
2 to 4 feet building to 10 to 13 feet. waves occasionally around
16 feet. 
.saturday night...west winds to 30 knots. lake effect snow
showers. waves 8 to 12 feet subsiding to 5 to 9 feet. waves
occasionally around 15 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. snow
showers during the day, then a chance of snow showers sunday
night. waves 5 to 8 feet subsiding to 3 to 5 feet. waves
occasionally around 10 feet. 
.monday...northwest winds 15 to 25 knots becoming west to
30 knots. a chance of snow showers during the day, then snow
showers likely monday night. waves 2 to 4 feet building to 6 to
10 feet. waves occasionally around 13 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest. a chance
of snow showers during the day. waves 7 to 10 feet subsiding to
3 to 5 feet. waves occasionally around 13 feet. 

$$

fzus61 kbuf 120302
glflo 
expires:202512121000;;425423

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu dec 11 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 28.9 inch low will remain over the canadian maritimes 
through friday before moving into the north atlantic by saturday. a 
30.1 inch high will build from the upper ohio valley friday to off 
the mid atlantic coast saturday. a 29.6 inch low will then move from 
just east of lake superior saturday to southern quebec by sunday 
where it will weaken to a 29.9 inch trough. a strong 30.8 inch high 
will then build from the mid mississippi valley sunday to the 
southeast states monday while weakening to 30.5 inches.


loz062-121000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est thu dec 11 2025

.overnight...northwest winds 15 to 20 knots becoming west.
a chance of snow showers. waves 3 to 6 feet. 
.friday...west winds 15 to 25 knots. waves 3 to 6 feet. 
.friday night...west winds 15 to 20 knots becoming southwest
10 to 15 knots. a chance of snow showers overnight. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.saturday...southwest winds 15 to 20 knots becoming west and
increasing to 30 knots. lake effect snow showers. waves 2 to
4 feet building to 7 to 11 feet. waves occasionally around
14 feet. 
.saturday night...west winds to 30 knots. snow showers likely.
waves 6 to 10 feet subsiding to 5 to 7 feet. waves occasionally
around 13 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. snow
showers likely during the day, then a chance of snow showers
sunday night. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.monday...west winds 15 to 20 knots increasing to 30 knots. a
chance of snow showers. waves 2 to 4 feet building to 7 to
10 feet. waves occasionally around 13 feet. 
.tuesday...west winds 15 to 25 knots becoming southwest to
30 knots. waves 5 to 8 feet. waves occasionally around 10 feet. 

$$

fzus61 kcle 120238
glfle 
expires:202512120915;;424612

open lake forecast for lake erie
national weather service cleveland oh
938 pm est thu dec 11 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 ridge averaging 30.00 inches will briefly build east over the 
great lakes tonight into friday morning before low pressure 29.80
inches moves east across the ohio valley during the day friday. a
cold front will move east across lake erie saturday morning with 
high pressure 30.50 inches building southeast into the ohio 
valley on monday which will persist through tuesday. 


lez162>164-120915-
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-
938 pm est thu dec 11 2025

.rest of tonight...west winds 5 to 15 knots. a slight chance of
snow showers. waves 1 to 3 feet subsiding to 1 foot or less. 
.friday...west winds 5 to 10 knots becoming light and variable.
waves 1 foot or less. 
.friday night...southwest winds 5 to 15 knots becoming west 15 to
20 knots. a chance of snow overnight. waves 1 foot or less
building to 3 to 5 feet. 
.saturday...west winds 15 to 25 knots. a chance of snow in the
afternoon. waves 3 to 6 feet. 
.saturday night...west winds 15 to 20 knots. a chance of snow in
the evening. waves 3 to 5 feet. 
.sunday...northwest winds 15 to 25 knots becoming west. waves
3 to 6 feet subsiding to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots. waves 2 to 4 feet
building to 4 to 7 feet, then subsiding to 3 to 5 feet. waves
occasionally around 9 feet. 
.tuesday...southwest winds 15 to 25 knots increasing to 30 knots.
waves 1 to 3 feet building to 3 to 6 feet. 

$$

fzus61 kcle 120238
glfle 
expires:202512120915;;424613

open lake forecast for lake erie
national weather service cleveland oh
938 pm est thu dec 11 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 ridge averaging 30.00 inches will briefly build east over the 
great lakes tonight into friday morning before low pressure 29.80
inches moves east across the ohio valley during the day friday. a
cold front will move east across lake erie saturday morning with 
high pressure 30.50 inches building southeast into the ohio 
valley on monday which will persist through tuesday. 


lez165>167-120915-
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-
938 pm est thu dec 11 2025

.rest of tonight...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. a slight chance of snow showers. waves 3 to
6 feet subsiding to 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.friday night...southwest winds 5 to 10 knots increasing to 15 to
25 knots overnight. snow likely overnight. waves 2 feet or less
building to 5 to 8 feet. waves occasionally around 10 feet. 
.saturday...west winds to 30 knots. a chance of snow in the
morning, then snow likely in the afternoon. waves 6 to 10 feet.
waves occasionally around 13 feet. 
.saturday night...west winds 15 to 25 knots. a chance of snow.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.sunday...northwest winds to 30 knots diminishing to 15 to
20 knots. a chance of snow during the day. waves 6 to 10 feet
subsiding to 3 to 6 feet. waves occasionally around 13 feet. 
.monday...west winds 15 to 25 knots increasing to 30 knots. waves
4 to 7 feet building to 8 to 12 feet, then subsiding to 7 to
10 feet. waves occasionally around 15 feet. 
.tuesday...southwest winds 15 to 25 knots increasing to 30 knots.
waves 4 to 7 feet building to 5 to 9 feet. waves occasionally
around 11 feet. 

$$

fzus61 kcle 120238
glfle 
expires:202512120915;;424614

open lake forecast for lake erie
national weather service cleveland oh
938 pm est thu dec 11 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 ridge averaging 30.00 inches will briefly build east over the 
great lakes tonight into friday morning before low pressure 29.80
inches moves east across the ohio valley during the day friday. a
cold front will move east across lake erie saturday morning with 
high pressure 30.50 inches building southeast into the ohio 
valley on monday which will persist through tuesday. 


lez061-168-169-120915-
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-
938 pm est thu dec 11 2025

.rest of tonight...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of snow showers late this evening, then
a slight chance of snow showers after midnight. waves 3 to 6 feet
subsiding to 2 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.friday night...southwest winds 5 to 15 knots increasing to 15 to
20 knots. snow likely overnight. waves 1 to 3 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.saturday...west winds to 30 knots. snow likely. waves 6 to
10 feet building to 7 to 11 feet. waves occasionally around
14 feet. 
.saturday night...west winds 15 to 25 knots. snow likely in the
evening, then a chance of snow overnight. waves 5 to 9 feet.
waves occasionally around 11 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. snow
likely during the day, then a chance of snow sunday night. waves
5 to 8 feet subsiding to 3 to 6 feet. waves occasionally around
10 feet. 
.monday...west winds 15 to 20 knots increasing to 30 knots. a
chance of snow monday night. waves 3 to 6 feet building to 8 to
12 feet. waves occasionally around 15 feet. 
.tuesday...southwest winds 15 to 20 knots increasing to 30 knots.
waves 5 to 8 feet building to 6 to 9 feet. waves occasionally
around 11 feet. 

$$

fzus63 kdtx 120254
glfsc 
expires:202512121100;;425000

lake st clair forecast
national weather service detroit/pontiac mi
954 pm est thu dec 11 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 reside over the
great lakes through friday. this is followed by low pressure,
29.70 inches, moving in from central canada into northern ontario
friday night and saturday. sporadic gale force wind gusts are
possible with this system.


lcz460-121100-
lake st clair-
954 pm est thu dec 11 2025

.rest of tonight...west winds 10 to 15 knots becoming northwest 5 to
10 knots after midnight. partly cloudy. waves 2 feet or less.
.friday...light and variable winds becoming southwest 5 to 10 knots
late in the afternoon. partly sunny. waves 2 feet or less.
.friday night...southwest winds 5 to 10 knots increasing to 20 to 25
knots. mostly cloudy with scattered light snow showers. waves 2 feet
or less building to 2 to 4 feet after midnight.
.saturday...west winds 20 to 25 knots diminishing to 15 to 20 knots
early in the afternoon. mostly cloudy. waves 2 to 4 feet subsiding
to 1 to 3 feet in the late morning and afternoon.
.saturday night...west winds 15 to 20 knots increasing to 20 to 25
knots after midnight. mostly cloudy early in the evening becoming
partly cloudy. waves 1 to 3 feet.
.sunday...west winds 20 to 25 knots becoming northwest 15 to 20
knots in the afternoon and evening. partly sunny becoming mostly
clear. waves 1 to 3 feet.
.monday...southwest winds to 30 knots. partly cloudy. waves 2 to 4
feet. a small craft advisory may be needed.
.tuesday...southwest winds to 30 knots. mostly cloudy. waves 2 to 4
feet.

$$

fzus63 kdtx 120252
glflh 
expires:202512121100;;424883

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 pm est thu dec 11 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 reside over the
great lakes through friday. this is followed by low pressure,
29.70 inches, moving in from central canada into northern ontario
friday night and saturday. sporadic gale force wind gusts are
possible with this system.


lhz363-462-121100-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
952 pm est thu dec 11 2025

.rest of 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. 
.friday...west winds 10 to 15 knots backing to the southwest late
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in
the late morning and afternoon. 
.friday night...southwest winds 10 to 15 knots increasing to
20 to 25 knots with gusts to around 30 knots. numerous snow
showers in the evening...then scattered snow showers after
midnight. waves 3 to 5 feet building to 6 to 9 feet in the late
evening and overnight. waves occasionally around 12 feet. 
.saturday...west winds to 30 knots. freezing spray. scattered
snow showers in the afternoon. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.saturday night...west winds to 30 knots decreasing to 20 to
25 knots in the late evening and overnight. scattered snow
showers. freezing spray. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.sunday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the evening.
scattered snow showers. freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.monday...southwest winds 15 to 20 knots increasing to 30 knots
with gusts to 35 knot gales until early evening...then becoming
west 20 to 25 knots in the late evening and early morning. a
chance of snow. freezing spray in the late morning and early
afternoon. waves 5 to 7 feet building to 10 to 14 feet. waves
occasionally around 18 feet. 
.tuesday...west winds 10 to 15 knots becoming southwest 15 to
20 knots in the late morning and early afternoon...then becoming
south 20 to 25 knots with gusts to 35 knot gales early in the
evening becoming southwest at 35 knot gales in the late evening
and early morning. waves 4 to 6 feet building to 10 to 14 feet
until early morning. waves occasionally around 18 feet. a gale
warning may be needed. 


$$

fzus63 kdtx 120252
glflh 
expires:202512121100;;424882

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 pm est thu dec 11 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 reside over the
great lakes through friday. this is followed by low pressure,
29.70 inches, moving in from central canada into northern ontario
friday night and saturday. sporadic gale force wind gusts are
possible with this system.


lhz361-362-121100-
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-
952 pm est thu dec 11 2025

.rest of tonight...northwest winds 10 to 15 knots. waves 3 to
5 feet. 
.friday...west winds 10 to 15 knots backing to the southwest late
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in
the afternoon. 
.friday night...southwest winds 10 to 15 knots increasing to
20 to 25 knots. snow showers in the evening...then numerous snow
showers after midnight. waves 2 to 4 feet building to 6 to 9 feet
in the late evening and overnight. waves occasionally around
12 feet. 
.saturday...west winds to 30 knots. scattered snow showers.
freezing spray. waves 8 to 12 feet. waves occasionally around
15 feet. 
.saturday night...west winds to 30 knots becoming northwest 20 to
25 knots in the late evening and overnight. scattered snow
showers. freezing spray. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.sunday...northwest winds 20 to 25 knots decreasing to 10 to
15 knots. freezing spray. waves 6 to 9 feet subsiding to 4 to
6 feet late in the evening. waves occasionally around 12 feet. 
.monday...southwest winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots until early evening...then
becoming west 15 to 20 knots in the late evening and early
morning. a chance of snow early in the morning...then snow likely
until early evening. waves 5 to 7 feet building to 8 to 12 feet.
waves occasionally around 15 feet. 
.tuesday...west winds 10 to 15 knots becoming southwest 20 to
25 knots with gusts to around 30 knots until early morning. waves
4 to 6 feet building to 10 to 14 feet until early morning. waves
occasionally around 18 feet. 


$$

fzus63 kdtx 120252
glflh 
expires:202512121100;;424884

open lake forecast for lake huron
national weather service detroit/pontiac mi
952 pm est thu dec 11 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 reside over the
great lakes through friday. this is followed by low pressure,
29.70 inches, moving in from central canada into northern ontario
friday night and saturday. sporadic gale force wind gusts are
possible with this system.


lhz463-464-121100-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
952 pm est thu dec 11 2025

.rest of 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. 
.friday...west winds 10 to 15 knots decreasing to 5 to 10 knots
in the afternoon. waves 2 to 4 feet subsiding to 1 to 3 feet in
the late morning and afternoon. 
.friday night...southwest winds 10 to 15 knots increasing to
20 to 25 knots. scattered snow showers. waves 1 to 3 feet
building to 4 to 6 feet in the late evening and overnight. waves
occasionally around 8 feet. 
.saturday...west winds to 30 knots decreasing to 20 to 25 knots
in the late morning and afternoon. scattered snow showers in the
morning. freezing spray. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.saturday night...west winds 20 to 25 knots. gusts to 30 knots
after midnight. freezing spray. scattered snow showers after
midnight. waves 6 to 9 feet. waves occasionally around 12 feet. 
.sunday...west winds to 30 knots becoming northwest 15 to
20 knots. freezing spray. scattered snow showers. waves 8 to
12 feet. waves occasionally around 15 feet. 
.monday...west winds 15 to 20 knots becoming southwest 20 to
25 knots with gusts to around 30 knots. a chance of snow until
early evening. waves 4 to 6 feet building to 6 to 9 feet. waves
occasionally around 12 feet. 
.tuesday...west winds 15 to 20 knots becoming southwest 10 to
15 knots in the late morning and early afternoon...then becoming
south 20 to 25 knots with gusts to around 30 knots early in the
evening increasing to 30 knots in the late evening and early
morning. waves 3 to 5 feet building to 6 to 9 feet until early
morning. waves occasionally around 12 feet. 


$$

fzus63 kmkx 120300
glflm 
expires:202512121030;;425290

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
900 pm cst thu dec 11 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 northwest winds will continue across into friday morning as
high pressure around 30.1 inches in western great lakes region
moves east southeast into the mid atlantic states. meanwhile low 
pressure around 29.7 inches in kansas will move northeast toward 
the ohio river valley. winds will increase friday afternoon as 
the pressure gradient tightens between these two features. friday
night into saturday, a strong arctic cold front will move across
the lake further strengthening winds. there may be a brief window
of gale force gusts behind the front. brisk conditions will likely
cause heavy freezing spray as the cold airmass moves over lake
michigan.

a strong high pressure around 30.8 inches will move southeast 
from the northern plains and through the western great lakes
region sunday. winds ease later sunday as the high approaches, 
but gusty winds may return early next week as the high exits into
the ohio river valley.



lmz261-362-364-366-563-565-567-868-121030-
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-
900 pm cst thu dec 11 2025

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 10 to 15 kt becoming west.
chance of flurries overnight. waves 1 to 2 ft. 
.friday...west winds 10 to 15 kt becoming southwest 15 to 25 kt.
slight chance of snow in the morning, then chance of snow in the
afternoon. waves 1 to 2 ft building to 3 to 5 ft.
.friday night...west winds to 30 kt becoming northwest. chance of
snow in the evening. freezing spray in the evening, then heavy
freezing spray overnight. waves 4 to 7 ft occasionally to 9 ft
building to 10 to 14 ft occasionally to 18 ft. 
.saturday...northwest winds to 30 kt. heavy freezing spray.
chance of snow. waves 8 to 12 ft occasionally to 16 ft subsiding
to 7 to 10 ft occasionally to 13 ft. 
.saturday night...northwest winds to 30 kt. heavy freezing spray.
chance of snow. waves 8 to 12 ft occasionally to 16 ft. 
.sunday...northwest winds to 30 kt. freezing spray in the
morning. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.sunday night...west winds 10 to 20 kt becoming southwest to
30 kt. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.monday...southwest gales to 40 kt becoming west. freezing spray.
chance of snow. waves 8 to 12 ft occasionally to 16 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to gales to
40 kt. waves 3 to 5 ft building to 8 to 12 ft occasionally to
16 ft.  

$$

fzus63 kmkx 120300
glflm 
expires:202512121030;;425291

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
900 pm cst thu dec 11 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 northwest winds will continue across into friday morning as
high pressure around 30.1 inches in western great lakes region
moves east southeast into the mid atlantic states. meanwhile low 
pressure around 29.7 inches in kansas will move northeast toward 
the ohio river valley. winds will increase friday afternoon as 
the pressure gradient tightens between these two features. friday
night into saturday, a strong arctic cold front will move across
the lake further strengthening winds. there may be a brief window
of gale force gusts behind the front. brisk conditions will likely
cause heavy freezing spray as the cold airmass moves over lake
michigan.

a strong high pressure around 30.8 inches will move southeast 
from the northern plains and through the western great lakes
region sunday. winds ease later sunday as the high approaches, 
but gusty winds may return early next week as the high exits into
the ohio river valley.



lmz080-669-671-673-675-777-779-870-872-874-876-878-121030-
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-
900 pm cst thu dec 11 2025

sheboygan wi to pentwater mi south...

.rest of tonight...northwest winds 5 to 10 kt veering to east.
chance of flurries overnight. waves 1 to 3 ft subsiding to 1 to
2 ft. 
.friday...south 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 becoming west late. slight chance of snow in the
morning, then chance of snow in the afternoon. waves 1 ft or less
building to 2 to 4 ft. 
.friday night...west winds to 30 kt becoming northwest gales to
35 kt. chance of snow in the evening. freezing spray. waves 4 to
7 ft occasionally to 9 ft building to 12 to 16 ft occasionally to
21 ft. 
.saturday...northwest winds to 30 kt. heavy freezing spray.
chance of snow. waves 12 to 16 ft occasionally to 21 ft. 
.saturday night...northwest gales to 35 kt diminishing to 30 kt.
heavy freezing spray. chance of snow. waves 10 to 14 ft
occasionally to 18 ft. 
.sunday...northwest winds to 30 kt. chance of snow in the
morning. freezing spray. waves 12 to 16 ft occasionally to 21 ft.
.sunday night...west winds 10 to 20 kt becoming southwest to
30 kt. waves 5 to 8 ft occasionally to 10 ft. 
.monday...southwest gales to 40 kt. freezing spray. waves 10 to
14 ft occasionally to 18 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 8 to 12 ft
occasionally to 16 ft.  

$$

fzus63 kmqt 120256
glfls 
expires:202512120900;;425028

open lake forecast for lake superior
national weather service marquette mi
956 pm est thu dec 11 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...

broad 30.1 inch ridging extends from minnesota to west virginia 
through the overnight hours into friday morning while a weak surface 
trough moves southeast from northern manitoba to northwest ontario. 
this trough deepens from 29.9 inches to 29.7 inches through the 
afternoon to evening hours of friday just northeast of lake 
superior. as this low exits to the east saturday, a 30.7 inch high 
settles over the dakotas saturday evening. this high moves over 
illinois sunday evening and towards the us southeast by monday 
morning. in its wake, a 29.9 inch trough will pass over lake 
superior monday afternoon associated with a 29.7 inch low over 
hudson bay. 30.1 inch ridging resumes over the lake monday night 
into tuesday ahead of a 29.2 inch low moving from manitoba to 
northern ontario tuesday.



lsz267-120900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
956 pm est thu dec 11 2025

...gale watch in effect from friday evening through sunday
morning...

.rest of tonight...northwest winds 10 to 20 knots. a chance of
snow showers. waves 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots backing west by late
morning, then becoming southwest 15 to 25 knots by mid afternoon.
a chance of snow showers. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.friday night...southwest winds 20 to 30 knots becoming west
gales to 40 knots by midnight. patchy fog in the evening.
freezing spray after midnight. snow showers. waves building to
9 to 12 feet occasionally to 15 feet. 
.saturday...northwest gales to 40 knots. freezing spray. snow
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet. 
.saturday night...north gales to 35 knots. freezing spray. snow
showers in the evening. a chance of snow showers after midnight.
waves subsiding to 6 to 9 feet occasionally to 11 feet. 
.sunday...north winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. freezing spray in the morning. a
chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...west winds 10 to 20 knots becoming southwest
20 to 30 knots after midnight. a chance of snow showers. freezing
spray after midnight. waves subsiding to 2 to 4 feet, then
building to 5 to 8 feet occasionally to 10 feet. 
.monday...southwest winds 20 to 30 knots becoming northwest 15 to
25 knots. freezing spray. snow showers, then a chance of snow
showers. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 2 to 4 feet. 
.tuesday...south gales to 35 knots veering southwest. a chance of
freezing drizzle. a chance of snow showers. waves building to
7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 120256
glfls 
expires:202512120900;;425023

open lake forecast for lake superior
national weather service marquette mi
956 pm est thu dec 11 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...

broad 30.1 inch ridging extends from minnesota to west virginia 
through the overnight hours into friday morning while a weak surface 
trough moves southeast from northern manitoba to northwest ontario. 
this trough deepens from 29.9 inches to 29.7 inches through the 
afternoon to evening hours of friday just northeast of lake 
superior. as this low exits to the east saturday, a 30.7 inch high 
settles over the dakotas saturday evening. this high moves over 
illinois sunday evening and towards the us southeast by monday 
morning. in its wake, a 29.9 inch trough will pass over lake 
superior monday afternoon associated with a 29.7 inch low over 
hudson bay. 30.1 inch ridging resumes over the lake monday night 
into tuesday ahead of a 29.2 inch low moving from manitoba to 
northern ontario tuesday.



lsz162-120900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
956 pm est thu dec 11 2025 /856 pm cst thu dec 11 2025/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 120256
glfls 
expires:202512120900;;425024

open lake forecast for lake superior
national weather service marquette mi
956 pm est thu dec 11 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...

broad 30.1 inch ridging extends from minnesota to west virginia 
through the overnight hours into friday morning while a weak surface 
trough moves southeast from northern manitoba to northwest ontario. 
this trough deepens from 29.9 inches to 29.7 inches through the 
afternoon to evening hours of friday just northeast of lake 
superior. as this low exits to the east saturday, a 30.7 inch high 
settles over the dakotas saturday evening. this high moves over 
illinois sunday evening and towards the us southeast by monday 
morning. in its wake, a 29.9 inch trough will pass over lake 
superior monday afternoon associated with a 29.7 inch low over 
hudson bay. 30.1 inch ridging resumes over the lake monday night 
into tuesday ahead of a 29.2 inch low moving from manitoba to 
northern ontario tuesday.



lsz263-120900-
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-
956 pm est thu dec 11 2025

...gale watch in effect from friday evening through sunday
morning...

.rest of tonight...northwest winds 5 to 15 knots backing west by
midnight. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots increasing to 20 to 30 knots.
a chance of snow showers in the morning, then snow showers in the
afternoon. waves building to 4 to 7 feet occasionally to 9 feet. 
.friday night...northwest gales to 35 knots. heavy freezing
spray. a chance of snow showers. waves building to 6 to 9 feet
occasionally to 11 feet. 
.saturday...northwest gales to 35 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.saturday night...northwest gales to 35 knots veering north after
midnight. heavy freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 15 to 25 knots backing west in the
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.sunday night...southwest gales to 35 knots. a chance of snow
showers. freezing spray after midnight. waves building to 7 to
10 feet occasionally to 13 feet. 
.monday...west gales to 35 knots becoming northwest 10 to
20 knots. freezing spray. waves subsiding to calm to 2 feet. 
.tuesday...southwest gales to 40 knots veering west. waves
building to 6 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 120256
glfls 
expires:202512120900;;425025

open lake forecast for lake superior
national weather service marquette mi
956 pm est thu dec 11 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...

broad 30.1 inch ridging extends from minnesota to west virginia 
through the overnight hours into friday morning while a weak surface 
trough moves southeast from northern manitoba to northwest ontario. 
this trough deepens from 29.9 inches to 29.7 inches through the 
afternoon to evening hours of friday just northeast of lake 
superior. as this low exits to the east saturday, a 30.7 inch high 
settles over the dakotas saturday evening. this high moves over 
illinois sunday evening and towards the us southeast by monday 
morning. in its wake, a 29.9 inch trough will pass over lake 
superior monday afternoon associated with a 29.7 inch low over 
hudson bay. 30.1 inch ridging resumes over the lake monday night 
into tuesday ahead of a 29.2 inch low moving from manitoba to 
northern ontario tuesday.



lsz264-120900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
956 pm est thu dec 11 2025

...gale watch in effect from friday evening through sunday
morning...

.rest of tonight...northwest winds 5 to 15 knots. a slight chance
of snow showers after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots becoming southwest 15 to
25 knots by late morning, then becoming west 20 to 30 knots by
mid afternoon. a chance of snow showers in the morning, then snow
showers in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday night...northwest winds 20 to 30 knots increasing to
gales to 40 knots by midnight. patchy dense fog in the evening.
heavy freezing spray. snow showers likely in the evening. a
chance of snow showers after midnight. waves building to 7 to
10 feet occasionally to 13 feet. 
.saturday...northwest gales to 40 knots. heavy freezing spray. a
chance of snow showers in the morning. snow showers likely in the
afternoon. waves subsiding to 6 to 9 feet occasionally to
11 feet. 
.saturday night...north gales to 35 knots. heavy freezing spray.
a chance of snow showers. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.sunday...northwest winds 20 to 30 knots becoming west 10 to
20 knots in the afternoon. freezing spray in the morning. waves
subsiding to 1 to 3 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. a chance of snow showers.
freezing spray after midnight. waves building to 7 to 10 feet
occasionally to 13 feet. 
.monday...west gales to 35 knots becoming northwest 15 to
25 knots. freezing spray. a chance of snow showers. waves
building to 8 to 11 feet occasionally to 14 feet, then subsiding
to calm to 2 feet. 
.tuesday...south gales to 35 knots veering west. a chance of
freezing drizzle. waves building to 7 to 11 feet occasionally to
14 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 120256
glfls 
expires:202512120900;;425026

open lake forecast for lake superior
national weather service marquette mi
956 pm est thu dec 11 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...

broad 30.1 inch ridging extends from minnesota to west virginia 
through the overnight hours into friday morning while a weak surface 
trough moves southeast from northern manitoba to northwest ontario. 
this trough deepens from 29.9 inches to 29.7 inches through the 
afternoon to evening hours of friday just northeast of lake 
superior. as this low exits to the east saturday, a 30.7 inch high 
settles over the dakotas saturday evening. this high moves over 
illinois sunday evening and towards the us southeast by monday 
morning. in its wake, a 29.9 inch trough will pass over lake 
superior monday afternoon associated with a 29.7 inch low over 
hudson bay. 30.1 inch ridging resumes over the lake monday night 
into tuesday ahead of a 29.2 inch low moving from manitoba to 
northern ontario tuesday.



lsz265-120900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
956 pm est thu dec 11 2025

...gale watch in effect from friday evening through sunday
morning...

.rest of tonight...northwest winds 10 to 20 knots backing west
late. a slight chance of snow showers late in the evening. waves
calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming southwest 15 to
25 knots by late morning, then becoming west 20 to 30 knots by
mid afternoon. a slight chance of snow showers in the morning,
then snow showers likely in the afternoon. waves building to 2 to
4 feet. 
.friday night...west gales to 35 knots becoming northwest gales
to 45 knots by midnight. freezing spray. snow showers. waves
building to 6 to 9 feet occasionally to 11 feet. 
.saturday...northwest gales to 45 knots. heavy freezing spray.
snow showers. waves subsiding to 5 to 8 feet occasionally to
10 feet. 
.saturday night...northwest gales to 45 knots becoming north
gales to 40 knots after midnight. freezing spray. snow showers
likely in the evening. a chance of snow 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. freezing spray in the morning. a
chance of snow showers. waves subsiding to 2 to 4 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.monday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. a chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to calm to 2 feet. 
.tuesday...south winds 20 to 30 knots becoming west gales to
35 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 120256
glfls 
expires:202512120900;;425027

open lake forecast for lake superior
national weather service marquette mi
956 pm est thu dec 11 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...

broad 30.1 inch ridging extends from minnesota to west virginia 
through the overnight hours into friday morning while a weak surface 
trough moves southeast from northern manitoba to northwest ontario. 
this trough deepens from 29.9 inches to 29.7 inches through the 
afternoon to evening hours of friday just northeast of lake 
superior. as this low exits to the east saturday, a 30.7 inch high 
settles over the dakotas saturday evening. this high moves over 
illinois sunday evening and towards the us southeast by monday 
morning. in its wake, a 29.9 inch trough will pass over lake 
superior monday afternoon associated with a 29.7 inch low over 
hudson bay. 30.1 inch ridging resumes over the lake monday night 
into tuesday ahead of a 29.2 inch low moving from manitoba to 
northern ontario tuesday.



lsz266-120900-
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-
956 pm est thu dec 11 2025

...gale watch in effect from friday evening through sunday
morning...

.rest of tonight...northwest winds 10 to 20 knots. a slight
chance of snow showers. waves 1 to 3 feet. 
.friday...west winds 10 to 20 knots backing southwest by late
morning, then increasing to 15 to 25 knots by mid afternoon. a
chance of snow showers. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.friday night...west gales to 35 knots becoming northwest gales
to 45 knots by midnight. patchy fog in the evening. freezing
spray. snow showers. waves building to 9 to 12 feet occasionally
to 15 feet. 
.saturday...northwest gales to 45 knots. heavy freezing spray.
snow showers. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 9 to 12 feet occasionally to 15 feet. 
.saturday night...north gales to 40 knots. freezing spray. snow
showers in the evening. a chance of snow showers after midnight.
waves 9 to 12 feet occasionally to 15 feet. 
.sunday...north winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. freezing spray in the morning. a
chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of snow showers. freezing
spray after midnight. waves subsiding to 2 to 4 feet, then
building to 5 to 8 feet occasionally to 10 feet. 
.monday...west winds 20 to 30 knots veering northwest. freezing
spray. a chance of snow showers. waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 2 to 4 feet. 
.tuesday...south gales to 40 knots becoming southwest gales to
35 knots. a chance of freezing drizzle and snow showers. waves
building to 7 to 11 feet occasionally to 14 feet. 

note, wave height forecasts are for ice free areas.

$$