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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est mon dec 15 2025

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.4 inch high over the southeastern states will slide 
off the southeast coast tuesday. a 29.0 inch low over northwest 
ontario province tuesday afternoon will move east to northern quebec 
by wednesday, with a trailing cold front crossing the lake 
wednesday. another 29.0 inch low near lake superior thursday will 
move to northern quebec by friday, with a trailing strong cold front 
crossing the lake late thursday night. in its wake, a 30.1 inch high 
will slowly build across the lake friday night and early saturday, 
then will drift off the atlantic coastline later saturday and 
saturday night, with a 29.5 inch low moving across ontario and 
quebec and pushing its attendant cold front across the lake sunday.


loz062-161000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est mon dec 15 2025

.rest of tonight...west winds 15 to 25 knots. waves 5 to 8 feet
subsiding to 3 to 6 feet. waves occasionally around 10 feet. 
.tuesday...southwest winds 15 to 25 knots. waves 3 to 5 feet
building to 3 to 6 feet. 
.tuesday night...southwest winds to 30 knots. waves 5 to 8 feet
building to 9 to 12 feet. waves occasionally around 15 feet. 
.wednesday...southwest winds to 30 knots becoming west. waves
7 to 11 feet. waves occasionally around 14 feet. 
.wednesday night...west winds 15 to 20 knots becoming south.
waves 4 to 7 feet subsiding to 1 to 3 feet. waves occasionally
around 9 feet. 
.thursday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales. rain. waves 3 to 6 feet building to
10 to 14 feet. waves occasionally around 18 feet. 
.friday...west gales to 35 knots diminishing to 10 to 15 knots. a
chance of rain and snow showers during the day. waves 10 to
15 feet subsiding to 2 to 4 feet. waves occasionally around
19 feet. 
.saturday...southwest winds 15 to 20 knots becoming west. a
chance of snow and rain showers during the day, then a chance of
rain showers saturday night. waves 2 to 4 feet building to 3 to
6 feet. 

$$

fzus61 kbuf 160302
glflo 
expires:202512161000;;657501

open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est mon dec 15 2025

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.4 inch high over the southeastern states will slide 
off the southeast coast tuesday. a 29.0 inch low over northwest 
ontario province tuesday afternoon will move east to northern quebec 
by wednesday, with a trailing cold front crossing the lake 
wednesday. another 29.0 inch low near lake superior thursday will 
move to northern quebec by friday, with a trailing strong cold front 
crossing the lake late thursday night. in its wake, a 30.1 inch high 
will slowly build across the lake friday night and early saturday, 
then will drift off the atlantic coastline later saturday and 
saturday night, with a 29.5 inch low moving across ontario and 
quebec and pushing its attendant cold front across the lake sunday.


loz063-161000-
lake ontario open waters from hamlin beach to sodus bay-
1002 pm est mon dec 15 2025

.rest of tonight...west winds 15 to 25 knots becoming southwest.
lake effect snow likely late this evening, then a chance of snow
showers after midnight. waves 6 to 9 feet subsiding to 4 to
7 feet. waves occasionally around 11 feet. 
.tuesday...southwest winds 15 to 20 knots. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots increasing to
30 knots. waves 2 to 4 feet building to 8 to 11 feet. waves
occasionally around 14 feet. 
.wednesday...southwest winds to 30 knots becoming west. waves
8 to 12 feet building to 9 to 13 feet. waves occasionally around
16 feet. 
.wednesday night...west winds 15 to 25 knots becoming south 15 to
20 knots. waves 7 to 10 feet subsiding to 2 to 4 feet. waves
occasionally around 13 feet. 
.thursday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales. a chance of rain during the day,
then rain thursday night. waves 4 to 7 feet building to 11 to
15 feet. waves occasionally around 19 feet. 
.friday...west gales to 40 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of rain and snow showers
during the day. waves 13 to 17 feet subsiding to 3 to 6 feet.
waves occasionally around 22 feet. 
.saturday...southwest winds 15 to 25 knots. a chance of snow and
rain showers during the day, then a chance of rain showers
saturday night. waves 2 to 4 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

fzus61 kbuf 160302
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est mon dec 15 2025

for waters beyond five nautical miles of shore on lake ontario

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

.synopsis...a 30.4 inch high over the southeastern states will slide 
off the southeast coast tuesday. a 29.0 inch low over northwest 
ontario province tuesday afternoon will move east to northern quebec 
by wednesday, with a trailing cold front crossing the lake 
wednesday. another 29.0 inch low near lake superior thursday will 
move to northern quebec by friday, with a trailing strong cold front 
crossing the lake late thursday night. in its wake, a 30.1 inch high 
will slowly build across the lake friday night and early saturday, 
then will drift off the atlantic coastline later saturday and 
saturday night, with a 29.5 inch low moving across ontario and 
quebec and pushing its attendant cold front across the lake sunday.


loz064-065-161000-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 pm est mon dec 15 2025

.rest of tonight...west winds 15 to 25 knots. lake effect snow.
waves 6 to 10 feet subsiding to 5 to 8 feet. waves occasionally
around 13 feet. 
.tuesday...southwest winds 15 to 20 knots becoming south. lake
effect snow likely early, then a chance of snow showers. waves
3 to 6 feet. 
.tuesday night...south winds 15 to 25 knots becoming southwest to
30 knots. waves 3 to 6 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.wednesday...southwest winds to 30 knots becoming west. a chance
of rain showers. waves 8 to 12 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.wednesday night...west winds 15 to 25 knots becoming south.
waves 7 to 10 feet subsiding to 2 to 4 feet. waves occasionally
around 13 feet. 
.thursday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales. a chance of rain during the day,
then rain thursday night. waves 5 to 8 feet building to 10 to
15 feet. waves occasionally around 19 feet. 
.friday...west gales to 35 knots becoming northwest and
diminishing to 10 to 15 knots. snow and rain showers likely
during the day, then a chance of snow showers friday night. waves
13 to 17 feet subsiding to 3 to 6 feet. waves occasionally around
22 feet. 
.saturday...southwest winds 15 to 25 knots. a chance of snow and
rain showers. waves 2 to 4 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
926 pm est mon dec 15 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...
high pressure 30.20 inches will persist through tuesday before a
low pressure system 30.00 inches begins to impact the area 
tuesday night. an associated cold front will push east on 
wednesday. a very brief ridge averaging 29.90 inches will build 
over the area late wednesday before a more robust system impacts 
the area thursday. low pressure 29.20 inches will move east across
the northern great lakes region, moving a strong cold front east 
on thursday afternoon followed by a secondary front on friday. a 
trough averaging 29.90 inches lingers through friday before high 
pressure 30.40 inches builds in on saturday.


lez162-163-160915-
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-
926 pm est mon dec 15 2025

.overnight...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday night...southwest winds 20 to 25 knots. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday night...southwest winds 5 to 15 knots becoming south
and increasing to 30 knots overnight. waves 2 feet or less
building to 3 to 5 feet. 
.thursday...south winds to 30 knots becoming west. rain during
the day, then a chance of rain and snow thursday night. waves
3 to 6 feet building to 4 to 7 feet. waves occasionally around
9 feet. 
.friday...west winds to 30 knots becoming southwest 15 to
25 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.saturday...south winds 15 to 25 knots becoming west. waves 2 to
4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 160226
glfle 
expires:202512160915;;656342

open lake forecast for lake erie
national weather service cleveland oh
926 pm est mon dec 15 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...
high pressure 30.20 inches will persist through tuesday before a
low pressure system 30.00 inches begins to impact the area 
tuesday night. an associated cold front will push east on 
wednesday. a very brief ridge averaging 29.90 inches will build 
over the area late wednesday before a more robust system impacts 
the area thursday. low pressure 29.20 inches will move east across
the northern great lakes region, moving a strong cold front east 
on thursday afternoon followed by a secondary front on friday. a 
trough averaging 29.90 inches lingers through friday before high 
pressure 30.40 inches builds in on saturday.


lez164>167-160915-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-
926 pm est mon dec 15 2025

.overnight...west winds 15 to 25 knots becoming southwest
and diminishing to 10 to 15 knots. a slight chance of snow. waves
5 to 8 feet subsiding to 2 to 4 feet. waves occasionally around
10 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 30 knots.
waves 1 to 3 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 
.tuesday night...southwest winds to 30 knots. waves 6 to 10 feet.
waves occasionally around 13 feet. 
.wednesday...southwest winds to 30 knots becoming west 15 to
25 knots. waves 6 to 10 feet subsiding to 3 to 6 feet. waves
occasionally around 13 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming south
and increasing to 30 knots overnight. waves 2 to 4 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 
.thursday...south gales to 35 knots becoming west. rain during
the day, then rain with a chance of snow thursday night. waves
7 to 10 feet building to 9 to 13 feet. waves occasionally around
16 feet. 
.friday...west gales to 35 knots becoming southwest and
diminishing to 15 to 25 knots. a chance of snow during the day.
waves 10 to 13 feet subsiding to 3 to 6 feet. waves occasionally
around 16 feet. 
.saturday...south winds to 30 knots becoming west 15 to 25 knots.
waves 5 to 9 feet subsiding to 3 to 6 feet. waves occasionally
around 11 feet. 

$$

fzus61 kcle 160226
glfle 
expires:202512160915;;656343

open lake forecast for lake erie
national weather service cleveland oh
926 pm est mon dec 15 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...
high pressure 30.20 inches will persist through tuesday before a
low pressure system 30.00 inches begins to impact the area 
tuesday night. an associated cold front will push east on 
wednesday. a very brief ridge averaging 29.90 inches will build 
over the area late wednesday before a more robust system impacts 
the area thursday. low pressure 29.20 inches will move east across
the northern great lakes region, moving a strong cold front east 
on thursday afternoon followed by a secondary front on friday. a 
trough averaging 29.90 inches lingers through friday before high 
pressure 30.40 inches builds in on saturday.


lez061-168-169-160915-
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-
926 pm est mon dec 15 2025

.overnight...southwest winds 15 to 25 knots diminishing to
10 to 15 knots. a chance of snow. waves 5 to 8 feet subsiding to
3 to 5 feet. waves occasionally around 10 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 15 to
25 knots. a chance of snow early. waves 2 to 4 feet building to
3 to 6 feet. 
.tuesday night...southwest winds to 30 knots increasing to
35 knot gales. waves 5 to 8 feet building to 7 to 11 feet. waves
occasionally around 14 feet. 
.wednesday...southwest winds to 30 knots becoming west 15 to
25 knots. waves 7 to 11 feet subsiding to 5 to 8 feet. waves
occasionally around 14 feet. 
.wednesday night...west winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. waves 3 to 6 feet subsiding to 3 to
5 feet. 
.thursday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales. rain during the day, then rain with
a chance of snow thursday night. waves 5 to 8 feet building to
10 to 14 feet. waves occasionally around 18 feet. 
.friday...west gales to 35 knots becoming southwest and
diminishing to 15 to 20 knots. a chance of snow during the day.
waves 10 to 14 feet subsiding to 2 to 4 feet. waves occasionally
around 18 feet. 
.saturday...south winds to 30 knots becoming southwest. a chance
of rain saturday night. waves 3 to 6 feet building to 4 to
7 feet. waves occasionally around 9 feet. 

$$

fzus63 kdtx 160251
glfsc 
expires:202512161100;;656962

lake st clair forecast
national weather service detroit/pontiac mi
951 pm est mon dec 15 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...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lcz460-161100-
lake st clair-
951 pm est mon dec 15 2025

...small craft advisory in effect from tuesday afternoon through
wednesday morning...

.rest of tonight...southwest winds 10 to 15 knots diminishing to 5
to 10 knots early in the morning. partly cloudy. waves 2 feet or
less.
.tuesday...southwest winds 5 to 10 knots becoming south 15 to 20
knots. partly sunny. waves 2 feet or less.
.tuesday night...southwest winds 20 to 25 knots diminishing to 15 to
20 knots after midnight. gusts to 30 knots. mostly clear early in
the evening becoming mostly cloudy. waves 2 to 4 feet.
.wednesday...southwest winds 15 to 20 knots becoming west 5 to 10
knots. partly sunny. waves 2 to 4 feet subsiding to 2 feet or less
in the late morning and afternoon.
.wednesday night...southwest winds 10 to 15 knots becoming south 20
to 25 knots. partly cloudy until early morning becoming mostly
cloudy. waves 1 to 3 feet.
.thursday...south winds 20 to 25 knots with gusts to 30 knots. light
rain likely in the morning...then rain in the afternoon and evening.
light snow likely in the evening. waves 2 to 4 feet. a small craft
advisory may be needed.
.friday...west winds 20 to 25 knots. mostly cloudy. waves 2 to 4
feet.
.saturday...southwest winds 15 to 20 knots. mostly cloudy. waves 1
to 3 feet.

$$

fzus63 kdtx 160249
glflh 
expires:202512161100;;656922

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 pm est mon dec 15 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...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz363-462-161100-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
949 pm est mon dec 15 2025

...gale warning in effect from tuesday afternoon through late
tuesday night...

.rest of tonight...west winds 10 to 15 knots. waves 3 to 5 feet
subsiding to 2 to 4 feet early in the morning. 
.tuesday...southwest winds 10 to 15 knots increasing to 30 knots
with gusts to 35 knot gales. waves 2 to 4 feet building to 8 to
12 feet. waves occasionally around 15 feet. 
.tuesday night...southwest winds to 30 knots decreasing to 20 to
25 knots after midnight. gusts to 40 knot gales. waves 10 to
14 feet. waves occasionally around 18 feet. 
.wednesday...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming south
to 30 knots with gusts to 35 knot gales. waves 3 to 5 feet
building to 8 to 12 feet in the late evening and overnight. waves
occasionally around 15 feet. 
.thursday...south winds to 30 knots becoming southwest at 35 knot
gales late in the evening. gusts to 40 knot gales. a chance of
rain...then rain and a chance of snow late in the afternoon.
freezing spray late in the evening. waves 12 to 16 feet. waves
occasionally around 20 feet. a gale warning may be needed. 
.friday...west at 35 knot gales becoming northwest to 30 knots
with gusts to 35 knot gales in the late morning and early
afternoon...then decreasing to 20 to 25 knots early in the
evening backing to the southwest with gusts to around 30 knots in
the late evening and early morning. freezing spray early in the
morning. waves 10 to 14 feet subsiding to 8 to 12 feet in the
late evening and early morning. waves occasionally around
18 feet. 
.saturday...south winds to 30 knots becoming southwest 20 to
25 knots with gusts to around 30 knots until early morning. a
chance of snow early in the morning. waves 8 to 12 feet. waves
occasionally around 15 feet. 


$$

fzus63 kdtx 160249
glflh 
expires:202512161100;;656923

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 pm est mon dec 15 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...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz463-464-161100-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
949 pm est mon dec 15 2025

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


$$

fzus63 kdtx 160249
glflh 
expires:202512161100;;656920

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 pm est mon dec 15 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...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz361-161100-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
949 pm est mon dec 15 2025

...gale warning in effect from late tuesday night through
wednesday morning...

.rest of tonight...west winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. waves 1 to 3 feet
building to 3 to 5 feet in the late morning and afternoon. 
.tuesday night...southwest winds 15 to 20 knots becoming west
20 to 25 knots after midnight. gusts to 35 knot gales. waves 4 to
6 feet building to 8 to 12 feet after midnight. waves
occasionally around 15 feet. 
.wednesday...west winds to 30 knots with gusts to 40 knot gales
decreasing to 10 to 15 knots. waves 8 to 12 feet subsiding to
4 to 6 feet early in the afternoon. waves occasionally around
15 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming south
15 to 20 knots with gusts to around 30 knots in the late evening
and overnight. waves 1 to 3 feet building to 6 to 9 feet in the
late evening and overnight. waves occasionally around 12 feet. 
.thursday...south winds 15 to 20 knots becoming southwest to
30 knots late in the afternoon...then veering to the west late in
the evening. gusts to 35 knot gales. rain. a chance of snow late
in the afternoon. freezing spray late in the evening. waves 8 to
12 feet. waves occasionally around 15 feet. 
.friday...northwest winds to 30 knots becoming north 15 to
20 knots in the late morning and early afternoon...then becoming
northwest 10 to 15 knots early in the evening becoming south
15 to 20 knots in the late evening and early morning. freezing
spray early in the morning. a chance of snow. waves 8 to 12 feet
subsiding to 3 to 5 feet until early morning. waves occasionally
around 15 feet. 
.saturday...south winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and early afternoon...then becoming
southwest 20 to 25 knots until early morning. a chance of snow
until afternoon. waves 6 to 9 feet. waves occasionally around
12 feet. 


$$

fzus63 kdtx 160249
glflh 
expires:202512161100;;656921

open lake forecast for lake huron
national weather service detroit/pontiac mi
949 pm est mon dec 15 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...weak high pressure, 30.20 inches will move across the
region early tuesday before a strong low, 29.10 inches, tracks
across northern ontario into the james bay late tuesday into
wednesday. gale warnings are in effect across the central and
northern portions of lake huron during this timeframe. a even
stronger system will affect the region thursday into friday.


lhz362-161100-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
949 pm est mon dec 15 2025

...gale warning in effect from tuesday afternoon through
wednesday morning...

.rest of tonight...west winds 10 to 15 knots. waves 3 to 5 feet. 
.tuesday...southwest winds 10 to 15 knots becoming south to
30 knots with gusts to 35 knot gales. waves 1 to 3 feet building
to 8 to 12 feet. waves occasionally around 15 feet. 
.tuesday night...south winds to 30 knots becoming southwest 20 to
25 knots in the late evening and overnight. gusts to 40 knot
gales. waves 10 to 14 feet. waves occasionally around 18 feet. 
.wednesday...west winds 20 to 25 knots with gusts to 35 knot
gales becoming northwest 10 to 15 knots early in the afternoon.
waves 10 to 14 feet subsiding to 6 to 9 feet early in the
afternoon. waves occasionally around 18 feet. 
.wednesday night...southwest winds 10 to 15 knots becoming south
20 to 25 knots with gusts to 35 knot gales in the late evening
and early morning...then increasing to 30 knots with gusts to
35 knot gales after midnight. waves 3 to 5 feet building to 12 to
16 feet. waves occasionally around 20 feet. 
.thursday...south at 35 knot gales decreasing to 30 knots late in
the morning...then becoming southwest at 35 knot gales late in
the evening. rain. a chance of snow late in the afternoon.
freezing spray late in the evening. waves 12 to 16 feet. waves
occasionally around 20 feet. a gale warning may be needed. 
.friday...west at 35 knot gales becoming northwest 20 to 25 knots
with gusts to around 30 knots in the late morning and early
afternoon...then decreasing to 15 to 20 knots early in the
evening becoming west 20 to 25 knots with gusts to around
30 knots in the late evening and early morning. freezing spray. a
chance of snow in the late evening and early morning. waves 12 to
16 feet subsiding to 8 to 12 feet until early morning. waves
occasionally around 20 feet. 
.saturday...south winds to 30 knots becoming southwest 20 to
25 knots early in the evening...then becoming west to 30 knots in
the late evening and early morning. a chance of snow until
afternoon. waves 10 to 14 feet. waves occasionally around
18 feet. 


$$

fzus63 kmkx 160301
glflm 
expires:202512161030;;657322

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cst mon dec 15 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...

west to southwest winds will continue to diminish overnight, as 
weak low pressure around 29.9 inches over lake superior moves 
northeast. light south to southwest winds are expected tuesday 
morning, before increasing ahead of an approaching strong low 
pressure around 29.0 inches. 

this low will move east from central saskatchewan into northern 
ontario tuesday afternoon through tuesday night. southwest winds 
will increase across the lake, with gales likely across the 
northern third of the lake, as the low passes to the north. a gale
warning is in effect for the northern third of the lake during 
this time. 

a cold front will cross the lake tuesday night, with winds 
veering to west behind the front. west to northwest winds will be
short lived, and will diminish behind the front tuesday night. 
another strong low pressure system is expected to track eastward 
along the canadian border wednesday into thursday. winds will turn
south and remain light wednesday morning before increasing. 

strong south winds will develop ahead of the low wednesday night.
strong winds will veer thursday morning, as another cold front 
crosses the lake and becomes west northwest. south gales wednesday
night and west northwest gales thursday afternoon through 
thursday night are likely.


lmz080-669-671-673-675-777-779-870-872-874-876-878-161030-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
901 pm cst mon dec 15 2025

sheboygan wi to pentwater mi south...

.rest of tonight...west winds 10 to 15 kt becoming southwest.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt becoming southwest to 30 kt.
waves 3 to 5 ft building to 8 to 11 ft occasionally to 14 ft. 
.tuesday night...southwest winds to 30 kt becoming west. waves 10
to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft 
occasionally to 13 ft. 
.wednesday...northwest winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.wednesday night...south gales to 35 kt increasing to gales to
40 kt. chance of rain showers overnight. waves 8 to 12 ft
occasionally to 16 ft building to 12 to 16 ft occasionally to
21 ft. 
.thursday...south gales to 35 kt becoming west gales to 40 kt.
rain showers in the morning, then rain showers likely in the
afternoon. waves 12 to 16 ft occasionally to 21 ft. 
.thursday night...west gales to 40 kt becoming northwest.
freezing spray. chance of snow and rain. waves 12 to 16 ft
occasionally to 21 ft. 
.friday...northwest winds to 30 kt becoming west 10 to 20 kt.
waves 10 to 14 ft occasionally to 18 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.saturday...southwest winds to 30 kt. waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to
14 ft.  

$$

fzus63 kmkx 160301
glflm 
expires:202512161030;;657320

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cst mon dec 15 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...

west to southwest winds will continue to diminish overnight, as 
weak low pressure around 29.9 inches over lake superior moves 
northeast. light south to southwest winds are expected tuesday 
morning, before increasing ahead of an approaching strong low 
pressure around 29.0 inches. 

this low will move east from central saskatchewan into northern 
ontario tuesday afternoon through tuesday night. southwest winds 
will increase across the lake, with gales likely across the 
northern third of the lake, as the low passes to the north. a gale
warning is in effect for the northern third of the lake during 
this time. 

a cold front will cross the lake tuesday night, with winds 
veering to west behind the front. west to northwest winds will be
short lived, and will diminish behind the front tuesday night. 
another strong low pressure system is expected to track eastward 
along the canadian border wednesday into thursday. winds will turn
south and remain light wednesday morning before increasing. 

strong south winds will develop ahead of the low wednesday night.
strong winds will veer thursday morning, as another cold front 
crosses the lake and becomes west northwest. south gales wednesday
night and west northwest gales thursday afternoon through 
thursday night are likely.


lmz261-362-364-563-161030-
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 rock island passage to sturgeon bay wi-
901 pm cst mon dec 15 2025

sturgeon bay wi to point betsie mi north...

...gale warning in effect from tuesday morning through late
tuesday night...

.rest of tonight...west winds 10 to 15 kt becoming southwest
10 to 20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...southwest winds to 30 kt increasing to gales to 40 kt.
slight chance of rain showers in the afternoon. waves 3 to 5 ft
building to 10 to 14 ft occasionally to 18 ft. 
.tuesday night...southwest gales to 40 kt becoming west gales to
35 kt. waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.wednesday...northwest winds to 30 kt becoming southwest 10 to
20 kt in the afternoon. waves 5 to 8 ft occasionally to 10 ft
subsiding to 1 to 3 ft. 
.wednesday night...south gales to 40 kt increasing to gales to
45 kt. waves 8 to 12 ft occasionally to 16 ft building to 14 to
18 ft occasionally to 23 ft. 
.thursday...south gales to 40 kt becoming west gales to 35 kt.
rain showers. waves 14 to 18 ft occasionally to 23 ft subsiding
to 10 to 14 ft occasionally to 18 ft. 
.thursday night...northwest gales to 40 kt. freezing spray.
chance of snow. waves 8 to 11 ft occasionally to 14 ft. 
.friday...north winds to 30 kt becoming northwest 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to 4 ft. 
.saturday...southwest winds to 30 kt becoming west. waves 10 to
14 ft occasionally to 18 ft subsiding to 7 to 10 ft occasionally
to 13 ft.  

$$

fzus63 kmkx 160301
glflm 
expires:202512161030;;657321

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cst mon dec 15 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...

west to southwest winds will continue to diminish overnight, as 
weak low pressure around 29.9 inches over lake superior moves 
northeast. light south to southwest winds are expected tuesday 
morning, before increasing ahead of an approaching strong low 
pressure around 29.0 inches. 

this low will move east from central saskatchewan into northern 
ontario tuesday afternoon through tuesday night. southwest winds 
will increase across the lake, with gales likely across the 
northern third of the lake, as the low passes to the north. a gale
warning is in effect for the northern third of the lake during 
this time. 

a cold front will cross the lake tuesday night, with winds 
veering to west behind the front. west to northwest winds will be
short lived, and will diminish behind the front tuesday night. 
another strong low pressure system is expected to track eastward 
along the canadian border wednesday into thursday. winds will turn
south and remain light wednesday morning before increasing. 

strong south winds will develop ahead of the low wednesday night.
strong winds will veer thursday morning, as another cold front 
crosses the lake and becomes west northwest. south gales wednesday
night and west northwest gales thursday afternoon through 
thursday night are likely.


lmz366-565-567-868-161030-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
901 pm cst mon dec 15 2025

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

.rest of tonight...west winds 5 to 10 kt becoming southwest after
midnight, then increasing to 10 to 20 kt late. waves 3 to 5 ft
subsiding to 1 to 3 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt. 
slight chance of rain showers in the afternoon. waves 3 to 5 ft 
building to 10 to 14 ft occasionally to 18 ft. 
.tuesday night...southwest winds to 30 kt becoming west after
midnight, then diminishing to 15 to 25 kt late. waves 10 to 14 ft
occasionally to 18 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.wednesday...northwest winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to
4 ft. 
.wednesday night...south gales to 40 kt. chance of rain showers
overnight. waves 8 to 12 ft occasionally to 16 ft building to
14 to 18 ft occasionally to 23 ft. 
.thursday...south gales to 40 kt becoming west. rain showers in
the morning, then rain showers likely in the afternoon. waves
14 to 18 ft occasionally to 23 ft subsiding to 10 to 14 ft
occasionally to 18 ft. 
.thursday night...northwest gales to 40 kt diminishing to gales
to 35 kt. freezing spray. chance of snow. waves 10 to 14 ft
occasionally to 18 ft. 
.friday...northwest winds to 30 kt becoming west 10 to 20 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.saturday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft
occasionally to 13 ft.  

$$

fzus63 kmqt 160301
glfls 
expires:202512160900;;657274

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 15 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...

a 29.9 inch trough over the east half of the lake will exit into 
northeastern ontario this evening, followed by a weak 30.0 inch 
ridge tonight. a 29.2 inch trough crosses the lake on tuesday as the 
29.0 inch parent low tracks across northern ontario. weak ridging of 
29.9 inches then returns on wednesday. wednesday evening through 
thursday morning, a 29.0 inch alberta clipper tracks from the 
canadian prairie to western lake superior, weakening to 29.2 inches 
as it progresses. the low crosses the lake thursday, followed by 
30.1 inch ridging on friday associated with a 30.2 inch high over 
the lower mississippi valley. another low pressure of around 29.5 
inches tracks near the upper great lakes saturday with ridging to 
follow late in the weekend.



lsz162-160900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est mon dec 15 2025 /900 pm cst mon dec 15 2025/

...gale warning in effect from 7 am est /6 am cst/ tuesday
through late tuesday night...

.rest of tonight...west winds 5 to 15 knots backing southwest by
midnight, then increasing to 15 to 25 knots late. waves calm to
2 feet building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest gales to 40 knots. a slight chance of
freezing rain, snow showers and sleet in the morning. waves
building to 9 to 12 feet occasionally to 15 feet. 
.tuesday night...west gales to 40 knots becoming northwest 20 to
30 knots late. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.wednesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. a slight chance of snow showers in the
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.wednesday night...south gales to 35 knots veering southwest
after midnight. a chance of rain showers, possibly mixed with
freezing rain in the evening. a chance of snow showers. rain
showers likely after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...north gales to 45 knots. rain showers likely in the
morning. snow showers likely. freezing spray in the afternoon.
waves subsiding to 4 to 7 feet occasionally to 9 feet, then
building to 9 to 12 feet occasionally to 15 feet. 
.thursday night...north gales to 45 knots diminishing to 20 to
30 knots after midnight. heavy freezing spray in the evening.
waves subsiding to 2 to 4 feet. 
.friday...south winds 15 to 25 knots increasing to 20 to
30 knots. a chance of snow showers, then snow showers likely.
waves subsiding to calm to 2 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.saturday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160301
glfls 
expires:202512160900;;657275

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 15 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...

a 29.9 inch trough over the east half of the lake will exit into 
northeastern ontario this evening, followed by a weak 30.0 inch 
ridge tonight. a 29.2 inch trough crosses the lake on tuesday as the 
29.0 inch parent low tracks across northern ontario. weak ridging of 
29.9 inches then returns on wednesday. wednesday evening through 
thursday morning, a 29.0 inch alberta clipper tracks from the 
canadian prairie to western lake superior, weakening to 29.2 inches 
as it progresses. the low crosses the lake thursday, followed by 
30.1 inch ridging on friday associated with a 30.2 inch high over 
the lower mississippi valley. another low pressure of around 29.5 
inches tracks near the upper great lakes saturday with ridging to 
follow late in the weekend.



lsz263-160900-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 pm est mon dec 15 2025

...gale warning in effect from 7 am est tuesday through late
tuesday night...

.rest of tonight...northwest winds 5 to 15 knots becoming
southwest 10 to 20 knots by midnight, then increasing to 20 to
30 knots late. waves calm to 2 feet building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...southwest gales to 40 knots. a slight chance of
freezing rain and sleet in the morning. waves building to 10 to
14 feet occasionally to 18 feet. 
.tuesday night...west gales to 40 knots becoming northwest gales
to 35 knots late. waves building to 12 to 17 feet occasionally to
21 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.wednesday...west winds 15 to 25 knots backing southwest in the
afternoon. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.wednesday night...south gales to 35 knots veering southwest
after midnight. a chance of rain showers in the evening. a chance
of snow showers. rain showers likely after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.thursday...north gales to 40 knots increasing to storm force
winds to 55 knots in the afternoon. rain showers likely in the
morning. snow showers likely. freezing spray in the afternoon.
waves building to 15 to 20 feet occasionally to 25 feet. 
.thursday night...north storm force winds to 55 knots diminishing
to gales to 40 knots after midnight. a chance of snow showers in
the evening. heavy freezing spray. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday...north winds 15 to 25 knots becoming south gales to
35 knots. a chance of snow showers, then snow showers likely.
freezing spray. waves subsiding to 1 to 3 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.saturday...west gales to 35 knots becoming northwest 20 to
30 knots. waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160301
glfls 
expires:202512160900;;657276

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 15 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...

a 29.9 inch trough over the east half of the lake will exit into 
northeastern ontario this evening, followed by a weak 30.0 inch 
ridge tonight. a 29.2 inch trough crosses the lake on tuesday as the 
29.0 inch parent low tracks across northern ontario. weak ridging of 
29.9 inches then returns on wednesday. wednesday evening through 
thursday morning, a 29.0 inch alberta clipper tracks from the 
canadian prairie to western lake superior, weakening to 29.2 inches 
as it progresses. the low crosses the lake thursday, followed by 
30.1 inch ridging on friday associated with a 30.2 inch high over 
the lower mississippi valley. another low pressure of around 29.5 
inches tracks near the upper great lakes saturday with ridging to 
follow late in the weekend.



lsz264-160900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est mon dec 15 2025

...gale warning in effect from 7 am est tuesday through wednesday
morning...

.rest of tonight...northwest winds 5 to 15 knots backing
southwest by midnight, then increasing to 15 to 25 knots late.
waves 1 to 3 feet subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.tuesday...southwest gales to 40 knots. a chance of freezing
rain, snow showers, sleet and rain showers in the morning. waves
building to 10 to 14 feet occasionally to 18 feet. 
.tuesday night...west gales to 45 knots becoming northwest gales
to 40 knots late. a slight chance of rain showers in the evening.
a slight chance of snow showers after midnight. waves building to
12 to 17 feet occasionally to 21 feet, then subsiding to 10 to
14 feet occasionally to 18 feet. 
.wednesday...northwest winds 20 to 30 knots becoming southwest
15 to 25 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.wednesday night...south winds 20 to 30 knots increasing to gales
to 35 knots after midnight. a chance of rain showers in the
evening. a chance of snow showers. rain showers likely after
midnight. waves building to 8 to 12 feet occasionally to 15 feet.
.thursday...north gales to 40 knots increasing to storm force
winds to 55 knots in the afternoon. rain showers in the morning.
snow showers. heavy freezing spray in the afternoon. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet. 
.thursday night...north storm force winds to 55 knots diminishing
to gales to 45 knots after midnight. heavy freezing spray. a
chance of snow showers. waves subsiding to 8 to 11 feet
occasionally to 14 feet. 
.friday...north winds 15 to 25 knots becoming south gales to
35 knots. freezing spray. snow showers likely. waves subsiding to
2 to 4 feet, then building to 8 to 11 feet occasionally to
14 feet. 
.saturday...west gales to 35 knots veering northwest. freezing
spray. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160301
glfls 
expires:202512160900;;657277

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 15 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...

a 29.9 inch trough over the east half of the lake will exit into 
northeastern ontario this evening, followed by a weak 30.0 inch 
ridge tonight. a 29.2 inch trough crosses the lake on tuesday as the 
29.0 inch parent low tracks across northern ontario. weak ridging of 
29.9 inches then returns on wednesday. wednesday evening through 
thursday morning, a 29.0 inch alberta clipper tracks from the 
canadian prairie to western lake superior, weakening to 29.2 inches 
as it progresses. the low crosses the lake thursday, followed by 
30.1 inch ridging on friday associated with a 30.2 inch high over 
the lower mississippi valley. another low pressure of around 29.5 
inches tracks near the upper great lakes saturday with ridging to 
follow late in the weekend.



lsz265-160900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est mon dec 15 2025

...gale warning in effect from tuesday afternoon through
wednesday morning...

.rest of tonight...northwest winds 10 to 20 knots backing
southwest by midnight. waves 1 to 3 feet subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest gales to
35 knots. a chance of sleet, rain showers, freezing rain and snow
showers in the morning. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...west gales to 45 knots veering northwest late. a
slight chance of rain and snow showers after midnight. waves
building to 10 to 14 feet occasionally to 18 feet, then subsiding
to 9 to 12 feet occasionally to 15 feet. 
.wednesday...northwest gales to 35 knots becoming south 15 to
25 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.wednesday night...south gales to 40 knots. a chance of rain and
snow showers. waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.thursday...south gales to 40 knots becoming north storm force
winds to 55 knots in the afternoon. rain showers in the morning,
then snow showers in the afternoon. freezing spray in the
afternoon. waves subsiding to 5 to 8 feet occasionally to
10 feet, then building to 15 to 20 feet occasionally to 25 feet. 
.thursday night...north storm force winds to 55 knots diminishing
to gales to 45 knots after midnight. freezing spray. snow showers
likely in the evening. a chance of snow showers after midnight.
waves building to 20 to 25 feet occasionally to 31 feet, then
subsiding to 10 to 14 feet occasionally to 18 feet. 
.friday...north winds 20 to 30 knots becoming south gales to
35 knots. a chance of snow showers, then snow showers likely.
freezing spray. waves subsiding to 2 to 4 feet, then building to
5 to 8 feet occasionally to 10 feet. 
.saturday...west gales to 40 knots veering northwest. a chance of
snow showers. waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160301
glfls 
expires:202512160900;;657278

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 15 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...

a 29.9 inch trough over the east half of the lake will exit into 
northeastern ontario this evening, followed by a weak 30.0 inch 
ridge tonight. a 29.2 inch trough crosses the lake on tuesday as the 
29.0 inch parent low tracks across northern ontario. weak ridging of 
29.9 inches then returns on wednesday. wednesday evening through 
thursday morning, a 29.0 inch alberta clipper tracks from the 
canadian prairie to western lake superior, weakening to 29.2 inches 
as it progresses. the low crosses the lake thursday, followed by 
30.1 inch ridging on friday associated with a 30.2 inch high over 
the lower mississippi valley. another low pressure of around 29.5 
inches tracks near the upper great lakes saturday with ridging to 
follow late in the weekend.



lsz266-160900-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 pm est mon dec 15 2025

...gale warning in effect from 10 am est tuesday through
wednesday morning...

.rest of tonight...northwest winds 10 to 20 knots backing west by
midnight, then becoming southwest 15 to 25 knots late. waves 3 to
5 feet occasionally to 7 feet subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.tuesday...south gales to 35 knots veering southwest by mid
afternoon. a chance of freezing rain, possibly mixed with sleet,
rain and snow showers in the morning. waves building to 10 to
14 feet occasionally to 18 feet. 
.tuesday night...southwest gales to 40 knots becoming northwest
gales to 45 knots late. a chance of snow showers, possibly mixed
with rain. waves building to 15 to 20 feet occasionally to
25 feet. 
.wednesday...northwest gales to 35 knots becoming southwest 20 to
30 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...south gales to 40 knots. a chance of rain and
snow showers. waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.
.thursday...south gales to 40 knots becoming north storm force
winds to 55 knots in the afternoon. rain showers in the morning,
then snow showers in the afternoon. freezing spray in the
afternoon. waves subsiding to 9 to 12 feet occasionally to
15 feet, then building to 17 to 22 feet occasionally to 28 feet. 
.thursday night...north storm force winds to 55 knots diminishing
to gales to 45 knots after midnight. heavy freezing spray. snow
showers in the evening. a chance of snow showers after midnight.
waves building to 20 to 25 feet occasionally to 31 feet, then
subsiding to 12 to 17 feet occasionally to 21 feet. 
.friday...north winds 20 to 30 knots becoming south gales to
40 knots. freezing spray. a chance of snow showers. snow showers.
waves subsiding to 3 to 5 feet occasionally to 7 feet, then
building to 10 to 14 feet occasionally to 18 feet. 
.saturday...west gales to 40 knots veering northwest. a chance of
snow showers. freezing spray. waves subsiding to 8 to 11 feet
occasionally to 14 feet, then building to 10 to 14 feet
occasionally to 18 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 160301
glfls 
expires:202512160900;;657279

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 15 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...

a 29.9 inch trough over the east half of the lake will exit into 
northeastern ontario this evening, followed by a weak 30.0 inch 
ridge tonight. a 29.2 inch trough crosses the lake on tuesday as the 
29.0 inch parent low tracks across northern ontario. weak ridging of 
29.9 inches then returns on wednesday. wednesday evening through 
thursday morning, a 29.0 inch alberta clipper tracks from the 
canadian prairie to western lake superior, weakening to 29.2 inches 
as it progresses. the low crosses the lake thursday, followed by 
30.1 inch ridging on friday associated with a 30.2 inch high over 
the lower mississippi valley. another low pressure of around 29.5 
inches tracks near the upper great lakes saturday with ridging to 
follow late in the weekend.



lsz267-160900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est mon dec 15 2025

...gale warning in effect from 10 am est tuesday through
wednesday morning...

.rest of tonight...northwest winds 10 to 20 knots backing west by
midnight, then becoming southwest 15 to 25 knots late. waves 3 to
5 feet occasionally to 7 feet subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.tuesday...south winds 20 to 30 knots increasing to gales to
40 knots by late morning, then veering southwest by mid
afternoon. a chance of freezing rain and snow showers in the
morning. a chance of rain showers. waves building to 8 to 11 feet
occasionally to 14 feet. 
.tuesday night...southwest gales to 35 knots becoming northwest
gales to 45 knots late. a chance of rain showers. a chance of
snow showers after midnight. waves subsiding to 7 to 10 feet
occasionally to 13 feet, then building to 15 to 20 feet
occasionally to 25 feet. 
.wednesday...northwest gales to 40 knots becoming west 15 to
25 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...south gales to 40 knots. a chance of freezing
rain in the evening. a chance of rain showers, possibly mixed
with snow. waves building to 9 to 12 feet occasionally to
15 feet. 
.thursday...south gales to 35 knots becoming north gales to
40 knots in the afternoon. rain showers. snow showers in the
afternoon. waves subsiding to 7 to 10 feet occasionally to
13 feet, then building to 11 to 15 feet occasionally to 19 feet. 
.thursday night...north gales to 45 knots. heavy freezing spray.
snow showers in the evening. a chance of snow showers after
midnight. waves building to 12 to 17 feet occasionally to
21 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.
.friday...north winds 20 to 30 knots becoming south gales to
35 knots. freezing spray. a chance of snow showers. snow showers.
waves subsiding to 1 to 3 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.saturday...west gales to 35 knots veering northwest. snow
showers likely, then a chance of snow showers. freezing spray.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$