fzus61 kbuf 220902
glflo 
expires:202512221600;;016832

open lake forecast for lake ontario
national weather service buffalo ny
402 am est mon dec 22 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 large 30.6 inch high will build east across the lake 
tonight, then slide to the atlantic coastline monday. a 29.8 inch 
low just north of lake superior tuesday will pass north of the lake, 
resulting in a pair of fronts passing across the region. following 
the passage of this system, a 30.4 inch high will then build across 
the lake wednesday, sliding off the atlantic coastline thursday.


loz064-065-221600-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 am est mon dec 22 2025

.today...northwest winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of snow showers this morning. waves 2 to
4 feet building to 3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming south 10 to
15 knots. a chance of snow early, then snow from late evening on.
waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. rain
and snow in the morning, then rain likely in the afternoon. waves
1 to 3 feet building to 3 to 5 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest to
30 knots. rain showers likely in the evening, then a chance of
rain and snow showers overnight. waves 5 to 8 feet building to
8 to 12 feet. waves occasionally around 15 feet. 
.wednesday...northwest winds 15 to 25 knots becoming south and
diminishing to 5 to 15 knots. waves 7 to 10 feet subsiding to
2 feet or less. waves occasionally around 13 feet. 
.thursday...south winds 10 to 15 knots becoming east 15 to
20 knots. a chance of rain and snow showers thursday night. waves
1 to 3 feet. 
.friday...east winds 15 to 25 knots becoming north. rain and snow
showers. waves 3 to 6 feet. 

$$

fzus61 kbuf 220902
glflo 
expires:202512221600;;016831

open lake forecast for lake ontario
national weather service buffalo ny
402 am est mon dec 22 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 large 30.6 inch high will build east across the lake 
tonight, then slide to the atlantic coastline monday. a 29.8 inch 
low just north of lake superior tuesday will pass north of the lake, 
resulting in a pair of fronts passing across the region. following 
the passage of this system, a 30.4 inch high will then build across 
the lake wednesday, sliding off the atlantic coastline thursday.


loz063-221600-
lake ontario open waters from hamlin beach to sodus bay-
402 am est mon dec 22 2025

.today...west winds 15 to 20 knots. a chance of snow showers
early. waves 3 to 5 feet. 
.tonight...southwest winds 15 to 20 knots becoming south 10 to
15 knots. a chance of snow early, then snow. snow and rain late.
waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. rain in
the morning, then a chance of rain in the afternoon. waves 1 to
3 feet building to 3 to 5 feet. 
.tuesday night...west winds to 30 knots becoming northwest. a
chance of rain showers in the evening. waves 5 to 8 feet building
to 7 to 11 feet. waves occasionally around 14 feet. 
.wednesday...northwest winds 15 to 25 knots becoming south and
diminishing to 5 to 15 knots. waves 7 to 10 feet subsiding to
1 to 2 feet. waves occasionally around 13 feet. 
.thursday...west winds 5 to 15 knots becoming east 15 to
20 knots. a chance of rain and snow showers thursday night. waves
2 feet or less building to 2 to 4 feet. 
.friday...east winds 15 to 25 knots becoming northwest. rain
showers with snow showers likely. waves 3 to 6 feet building to
4 to 7 feet, then subsiding to 3 to 5 feet. waves occasionally
around 9 feet. 

$$

fzus61 kbuf 220902
glflo 
expires:202512221600;;016830

open lake forecast for lake ontario
national weather service buffalo ny
402 am est mon dec 22 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 large 30.6 inch high will build east across the lake 
tonight, then slide to the atlantic coastline monday. a 29.8 inch 
low just north of lake superior tuesday will pass north of the lake, 
resulting in a pair of fronts passing across the region. following 
the passage of this system, a 30.4 inch high will then build across 
the lake wednesday, sliding off the atlantic coastline thursday.


loz062-221600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est mon dec 22 2025

.today...west winds 15 to 20 knots becoming southwest. waves 2 to
4 feet building to 3 to 5 feet. 
.tonight...southwest winds 15 to 20 knots becoming southeast 5 to
15 knots. a chance of snow early, then snow. snow and rain late.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming west 15 to
20 knots. rain in the morning, then a chance of rain in the
afternoon. waves 1 to 3 feet building to 3 to 5 feet. 
.tuesday night...west winds to 30 knots becoming northwest. waves
5 to 8 feet building to 6 to 9 feet. waves occasionally around
11 feet. 
.wednesday...northwest winds 15 to 25 knots becoming south and
diminishing to 10 knots or less. waves 5 to 8 feet subsiding to
1 foot or less. waves occasionally around 10 feet. 
.thursday...northwest winds 10 knots or less becoming east and
increasing to 15 to 20 knots. rain showers likely thursday night.
waves 2 feet or less building to 2 to 4 feet. 
.friday...east winds 15 to 20 knots becoming northwest 10 to
15 knots. rain showers. waves 4 to 7 feet subsiding to 2 to
4 feet. waves occasionally around 9 feet. 

$$

fzus61 kcle 220812
glfle 
expires:202512221515;;014795

open lake forecast for lake erie
national weather service cleveland oh
312 am est mon dec 22 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 30.50 inches will exit to the east today. a warm 
front moves through monday night followed by a cold front late 
tuesday. high pressure 30.30 inches returns for tuesday night into
wednesday. pressure falls to 29.60 inches friday with an
approaching area of low pressure.



lez162>164-221515-
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-
312 am est mon dec 22 2025

.today...south winds 10 to 15 knots becoming southeast. a chance
of snow late this morning. a slight chance of freezing rain and
snow early this afternoon. waves 2 feet or less. 
.tonight...southeast winds 10 to 15 knots becoming southwest. a
chance of snow early, then a chance of rain from late evening on.
waves 2 feet or less. 
.tuesday...southwest winds 10 to 15 knots becoming west. waves
2 feet or less. 
.tuesday night...west winds 5 to 15 knots becoming northwest.
waves 2 feet or less. 
.wednesday...northeast winds 10 knots or less becoming south.
rain likely wednesday night. waves 1 foot or less. 
.thursday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. a chance of rain during the day,
then rain likely thursday night. waves 2 feet or less. 
.friday...southwest winds 15 to 20 knots becoming west 5 to
15 knots. a chance of rain during the day. waves 1 to 3 feet
subsiding to 1 foot or less. 

$$

fzus61 kcle 220812
glfle 
expires:202512221515;;014796

open lake forecast for lake erie
national weather service cleveland oh
312 am est mon dec 22 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 30.50 inches will exit to the east today. a warm 
front moves through monday night followed by a cold front late 
tuesday. high pressure 30.30 inches returns for tuesday night into
wednesday. pressure falls to 29.60 inches friday with an
approaching area of low pressure.



lez165>167-221515-
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-
312 am est mon dec 22 2025

.today...southwest winds 10 to 15 knots becoming south. a chance
of snow with a slight chance of rain early this afternoon. a
slight chance of rain and snow late. waves 1 to 3 feet. 
.tonight...southeast winds 15 to 20 knots becoming southwest
10 to 15 knots. a slight chance of rain and snow early, then rain
from late evening on. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.tuesday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots becoming south. a chance
of rain wednesday night. waves 1 to 3 feet subsiding to 1 foot or
less. 
.thursday...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of rain during the day, then rain thursday
night. waves 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots becoming west and
diminishing to around 10 knots. rain likely during the day. waves
3 to 6 feet subsiding to 1 to 3 feet. 

$$

fzus61 kcle 220812
glfle 
expires:202512221515;;014797

open lake forecast for lake erie
national weather service cleveland oh
312 am est mon dec 22 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 30.50 inches will exit to the east today. a warm 
front moves through monday night followed by a cold front late 
tuesday. high pressure 30.30 inches returns for tuesday night into
wednesday. pressure falls to 29.60 inches friday with an
approaching area of low pressure.



lez061-168-169-221515-
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-
312 am est mon dec 22 2025

.today...southwest winds 10 to 15 knots. a slight chance of snow
early this afternoon. a chance of snow with a slight chance of
rain late. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...south winds 10 to 15 knots. a slight chance of rain
and snow early, then a chance of rain late in the evening. rain
after midnight. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of rain. waves 1 to 3 feet building to 3 to
6 feet. 
.tuesday night...west winds 15 to 20 knots becoming northwest.
waves 3 to 6 feet. 
.wednesday...northwest winds 10 to 15 knots becoming south
10 knots or less. a chance of rain wednesday night. waves 2 to
4 feet subsiding to 2 feet or less. 
.thursday...south winds 5 to 15 knots becoming southeast. rain
likely thursday night. waves 2 feet or less. 
.friday...southwest winds 15 to 20 knots becoming west and
diminishing to 5 to 10 knots. rain during the day. waves 2 to
4 feet building to 3 to 5 feet, then subsiding to 2 to 3 feet. 

$$

fzus63 kdtx 220909
glfsc 
expires:202512221715;;017605

lake st clair forecast
national weather service detroit/pontiac mi
409 am est mon dec 22 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 exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lcz460-221715-
lake st clair-
409 am est mon dec 22 2025

.today...southwest winds 5 to 10 knots becoming southeast 10 to 15
knots late in the afternoon. mostly cloudy. a chance of light snow
in the late morning and early afternoon. a chance of light rain late
in the afternoon. a chance of light freezing drizzle in the
afternoon.
.tonight...south winds 10 to 15 knots diminishing to 5 to 10 knots
early in the morning. cloudy. a chance of light snow in the
evening...then a chance of light rain after midnight. a chance of
drizzle and light freezing drizzle after midnight.
.tuesday...southwest winds 5 to 10 knots becoming west 10 to 15
knots in the late morning and afternoon. mostly cloudy. a chance of
drizzle early in the morning.
.tuesday night...west winds 10 to 15 knots becoming northwest 5 to
10 knots in the late evening and overnight. partly cloudy.
.wednesday...north winds 5 to 10 knots veering to the southeast in
the afternoon and evening. mostly cloudy. a chance of light rain in
the evening.
.thursday...southeast winds 10 to 15 knots. cloudy with a chance of
light rain.
.friday...northwest winds 15 to 20 knots. partly cloudy. light rain
likely.

waves omitted due to ice coverage.

$$

fzus63 kdtx 220908
glflh 
expires:202512221715;;017540

open lake forecast for lake huron
national weather service detroit/pontiac mi
408 am est mon dec 22 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 exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lhz462>464-221715-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
408 am est mon dec 22 2025

.today...southwest winds 10 to 15 knots increasing to 15 to
20 knots late in the morning...then becoming south 10 to 15 knots
in the afternoon. a chance of snow and rain in the afternoon.
waves 2 to 4 feet. 
.tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. a chance of rain and snow. waves
3 to 5 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the afternoon. waves 2 to 4 feet. 
.tuesday night...northwest winds 15 to 20 knots. waves 6 to
9 feet. waves occasionally around 12 feet. 
.wednesday...northwest winds 5 to 10 knots veering to the
northeast late in the morning...then becoming south 10 to
15 knots late in the afternoon. waves 5 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 10 feet. 
.thursday...south winds 5 to 10 knots backing to the northeast in
the late morning and early afternoon...then veering to the east
early in the evening becoming southeast 10 to 15 knots by
midnight. a chance of rain early in the evening. rain likely by
midnight. waves 1 to 3 feet building to 2 to 4 feet by midnight. 
.friday...southeast winds 15 to 20 knots backing to the northeast
in the late morning and early afternoon...then backing to the
north early in the evening becoming northwest 10 to 15 knots by
midnight. rain likely until afternoon. a chance of rain early in
the evening. waves 3 to 5 feet. 


$$

fzus63 kdtx 220908
glflh 
expires:202512221715;;017539

open lake forecast for lake huron
national weather service detroit/pontiac mi
408 am est mon dec 22 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 exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lhz362-363-221715-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
408 am est mon dec 22 2025

.today...southwest winds 15 to 20 knots becoming south 10 to
15 knots late in the afternoon. a chance of rain and snow in the
afternoon. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...south winds 10 to 15 knots increasing to 15 to
20 knots by midnight...then decreasing to 10 to 15 knots early in
the morning. a chance of rain and snow. waves 3 to 5 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the afternoon. waves 3 to 5 feet building to
6 to 9 feet early in the afternoon. waves occasionally around
12 feet. 
.tuesday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots after midnight.
waves 10 to 14 feet. waves occasionally around 18 feet. 
.wednesday...north winds 5 to 10 knots veering to the northeast
late in the morning...then becoming south 10 to 15 knots late in
the afternoon. waves 5 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 10 feet. 
.thursday...southwest winds 5 to 10 knots veering to the
northeast in the late morning and early afternoon...then becoming
east 10 to 15 knots early in the evening increasing to 15 to
20 knots by midnight. a chance of rain by midnight. waves 1 to
3 feet building to 2 to 4 feet . 
.friday...east winds 15 to 20 knots backing to the north early in
the evening...then becoming northwest 10 to 15 knots by midnight.
a chance of rain and snow until afternoon...then a chance of rain
early in the evening. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 220908
glflh 
expires:202512221715;;017538

open lake forecast for lake huron
national weather service detroit/pontiac mi
408 am est mon dec 22 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 exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lhz361-221715-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
408 am est mon dec 22 2025

.today...southwest winds 10 to 15 knots decreasing to 5 to
10 knots in the afternoon. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots decreasing to 5 to 10 knots
early in the morning. a chance of drizzle in the evening. a
chance of snow. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.tuesday...south winds 5 to 10 knots becoming west 10 to 15 knots
in the late morning and early afternoon...then increasing to
15 to 20 knots with gusts to around 30 knots early in the
afternoon. waves 3 to 5 feet building to 6 to 9 feet early in the
afternoon. waves occasionally around 12 feet. 
.tuesday night...west winds to 30 knots becoming northwest 10 to
15 knots. waves 6 to 9 feet. waves occasionally around 12 feet. 
.wednesday...north winds 5 to 10 knots veering to the east late
in the morning...then veering to the south late in the afternoon.
waves 1 to 3 feet. 
.thursday...west winds 5 to 10 knots veering to the northeast in
the late morning and early afternoon...then becoming east 10 to
15 knots early in the evening increasing to 15 to 20 knots by
midnight. a chance of rain and snow early in the evening. rain
and snow likely by midnight. waves 1 to 3 feet building to 2 to
4 feet . 
.friday...east winds 15 to 20 knots backing to the north early in
the evening...then decreasing to 10 to 15 knots by midnight. rain
and snow likely early in the morning...then a chance of rain and
snow until early evening. waves 3 to 5 feet. 


$$

fzus63 kmkx 220843
glflm 
expires:202512221615;;015762

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 am cst mon dec 22 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...

high pressure of 30.4 inches around the ohio river valley will 
continue southeast through the rest of the overnight, as broad 
low pressure around 29.8 inches moves into the northern great 
plains. this will result in increasing southwest winds across the 
waters. light snow should move into northern and central portions 
of the lake this morning.

winds will shift south and continue to increase today, as the low
slowly moves east. gusts to 30 knots are possible over southern 
lake michigan, with gales not expected at this time.

southwest winds will turn west tonight into tuesday, as low 
pressure around 29.8 inches moves into ontario. winds will shift 
out of the northwest by tuesday afternoon, as high pressure around
30.4 inches moves into the northern great plains. winds will 
subside tuesday night, as the high crosses lake michigan. these 
winds will shift out of the southeast wednesday, as the high moves
east of the region.


lmz261-362-364-366-563-565-567-868-221615-
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-
243 am cst mon dec 22 2025

sheboygan wi to pentwater mi north...

.today...southwest winds to 30 kt becoming south 15 to 25 kt
early this afternoon, then diminishing to 10 to 20 kt late.
chance of snow and slight chance of rain this morning, then
chance of rain and snow this afternoon. waves 4 to 7 ft
occasionally to 9 ft. 
.tonight...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of snow and slight chance of rain in the evening,
then slight chance of light freezing rain overnight. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tuesday...west winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.tuesday night...northwest winds 15 to 25 kt becoming north 10 to
15 kt overnight. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.wednesday...southeast winds 10 to 20 kt becoming south. waves
2 to 4 ft building to 3 to 5 ft. 
.wednesday night...south winds 10 to 15 kt veering to north.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...east winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday...north winds 10 to 20 kt. chance of rain. waves 3 to
5 ft.  

$$

fzus63 kmkx 220843
glflm 
expires:202512221615;;015763

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
243 am cst mon dec 22 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...

high pressure of 30.4 inches around the ohio river valley will 
continue southeast through the rest of the overnight, as broad 
low pressure around 29.8 inches moves into the northern great 
plains. this will result in increasing southwest winds across the 
waters. light snow should move into northern and central portions 
of the lake this morning.

winds will shift south and continue to increase today, as the low
slowly moves east. gusts to 30 knots are possible over southern 
lake michigan, with gales not expected at this time.

southwest winds will turn west tonight into tuesday, as low 
pressure around 29.8 inches moves into ontario. winds will shift 
out of the northwest by tuesday afternoon, as high pressure around
30.4 inches moves into the northern great plains. winds will 
subside tuesday night, as the high crosses lake michigan. these 
winds will shift out of the southeast wednesday, as the high moves
east of the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-221615-
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-
243 am cst mon dec 22 2025

sheboygan wi to pentwater mi south...

.today...south winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of snow and rain this morning, then slight chance of rain
and snow this afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.tonight...south winds 10 to 20 kt becoming west. chance of
sprinkles and slight chance of rain in the evening. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tuesday...west winds 10 to 20 kt becoming northwest. waves 3 to
5 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming northeast
10 to 15 kt. waves 2 to 4 ft. 
.wednesday...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...south winds 10 to 15 kt becoming east 5 to
10 kt. chance of rain. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...east winds 5 to 10 kt becoming southeast 10 to 15 kt.
waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmqt 220901
glfls 
expires:202512222100;;016639

open lake forecast for lake superior
national weather service marquette mi
400 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. this will be followed by low pressure of at 
least 29.6 inches moving across the great lakes basin late thursday 
into friday.



lsz266-222100-
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-
400 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.early this morning...west winds 10 to 20 knots. waves 1 to
3 feet. 
.today...southwest winds 10 to 20 knots backing southeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south by
midnight. a slight chance of snow. a slight chance of rain after
midnight. waves building to 1 to 3 feet. 
.tuesday...west winds 20 to 30 knots increasing to gales to
40 knots by late morning, then veering northwest by mid
afternoon. waves building to 10 to 14 feet occasionally to
18 feet. 
.tuesday night...northwest gales to 35 knots becoming north 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...south winds 15 to 25 knots. waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...southwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 1 to 3 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots. snow showers likely. waves building to 5 to 8 feet
occasionally to 10 feet. 
.friday...northeast winds 20 to 30 knots becoming south 15 to
25 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 220901
glfls 
expires:202512222100;;016638

open lake forecast for lake superior
national weather service marquette mi
400 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. this will be followed by low pressure of at 
least 29.6 inches moving across the great lakes basin late thursday 
into friday.



lsz265-222100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots backing south by late
morning, then becoming southeast 10 to 20 knots by mid afternoon.
waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering southwest late.
a slight chance of snow. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday...west gales to 40 knots veering northwest by mid
afternoon. waves building to 6 to 10 feet occasionally to
13 feet. 
.tuesday night...northwest winds 20 to 30 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.wednesday night...southwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots. rain and snow showers likely. waves building to 5 to
8 feet occasionally to 10 feet. 
.friday...north winds 15 to 25 knots veering south. a chance of
snow showers. waves subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 220901
glfls 
expires:202512222100;;016637

open lake forecast for lake superior
national weather service marquette mi
400 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. this will be followed by low pressure of at 
least 29.6 inches moving across the great lakes basin late thursday 
into friday.



lsz264-222100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south by
midnight, then becoming southwest 10 to 20 knots late. a slight
chance of snow. a chance of rain after midnight. waves building
to 1 to 3 feet. 
.tuesday...west winds 20 to 30 knots increasing to gales to
35 knots by late morning, then veering northwest by mid
afternoon. waves building to 7 to 11 feet occasionally to
14 feet. 
.tuesday night...north winds 20 to 30 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots veering north after
midnight. waves 1 to 3 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots. snow showers likely. waves building to 5 to 8 feet
occasionally to 10 feet. 
.friday...northeast winds 15 to 25 knots becoming south 10 to
20 knots. a chance of snow showers. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 220901
glfls 
expires:202512222100;;016635

open lake forecast for lake superior
national weather service marquette mi
400 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. this will be followed by low pressure of at 
least 29.6 inches moving across the great lakes basin late thursday 
into friday.



lsz162-222100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est mon dec 22 2025 /300 am cst mon dec 22 2025/

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...southeast winds 5 to 15 knots backing east by late
morning, then increasing to 10 to 20 knots by mid afternoon.
waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots veering south by midnight,
then veering west late. a slight chance of snow. waves building
to 1 to 3 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...north winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 10 to 20 knots becoming northeast 15 to
25 knots. a chance of rain and snow showers, then snow showers,
possibly mixed with rain. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 10 to 20 knots veering south. a chance of
snow showers. waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 220901
glfls 
expires:202512222100;;016636

open lake forecast for lake superior
national weather service marquette mi
400 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. this will be followed by low pressure of at 
least 29.6 inches moving across the great lakes basin late thursday 
into friday.



lsz263-222100-
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-
400 am est mon dec 22 2025

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...south winds 5 to 15 knots backing east by mid afternoon.
waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south by
midnight, then becoming southwest 10 to 20 knots late. a slight
chance of snow. waves building to 2 to 4 feet. 
.tuesday...west winds 20 to 30 knots veering northwest by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...north winds 15 to 25 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 15 to 25 knots. snow showers, possibly
mixed with rain. waves building to 5 to 8 feet occasionally to
10 feet. 
.friday...northeast winds 15 to 25 knots becoming south 10 to
20 knots. a chance of rain showers. a chance of snow showers.
waves subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 220901
glfls 
expires:202512222100;;016640

open lake forecast for lake superior
national weather service marquette mi
400 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. this will be followed by low pressure of at 
least 29.6 inches moving across the great lakes basin late thursday 
into friday.



lsz267-222100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.early this morning...southwest winds 10 to 20 knots. waves 1 to
3 feet. 
.today...southwest winds 10 to 20 knots backing south by mid
afternoon. waves subsiding to calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south by
midnight. a chance of snow. a chance of rain after midnight.
waves building to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west gales to
35 knots by late morning, then becoming northwest gales to
40 knots by mid afternoon. a slight chance of rain and snow
showers. waves building to 11 to 15 feet occasionally to 19 feet.
.tuesday night...northwest gales to 35 knots becoming north 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...south winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.wednesday night...south winds 10 to 20 knots veering northwest
after midnight. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.thursday...east winds 10 to 20 knots increasing to 20 to
30 knots. snow showers likely. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...east winds 15 to 25 knots veering south. a chance of
snow showers. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$