fzus63 kdtx 250833
glflh 
expires:202512251645;;186297

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am est thu dec 25 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, will move over the james
bay region on thursday. weaker winds will continue through
thursday morning before northerly winds increase as a low pressure
system slides east on friday with wintry precipitation.


lhz462>464-251645-
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-
333 am est thu dec 25 2025

.today...north winds 15 to 20 knots. waves 4 to 6 feet. 
.tonight...northeast winds 15 to 20 knots veering to the east
after midnight. waves 4 to 6 feet. 
.friday...southeast winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots early in the afternoon.
snow and sleet in the morning...then sleet...freezing rain and
snow in the afternoon. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.friday night...southeast winds 10 to 15 knots becoming northeast
5 to 10 knots in the late evening and overnight. waves 3 to
5 feet subsiding to 1 to 3 feet after midnight. 
.saturday...northeast winds 5 to 10 knots veering to the east
late in the morning...then becoming southeast 10 to 15 knots late
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet late
in the evening. 
.sunday...southeast winds 15 to 20 knots decreasing to 10 to
15 knots until early evening...then becoming west 20 to 25 knots
with gusts to around 30 knots by midnight. a chance of rain early
in the morning...then rain likely. a chance of snow by midnight.
waves 2 to 4 feet building to 6 to 9 feet by midnight. waves
occasionally around 12 feet. 
.monday...northwest winds to 30 knots with gusts to 40 knot gales
increasing to 35 knot gales with storm force gusts to 50 knots. a
chance of snow and rain early in the morning...then snow likely
in the late morning and early afternoon. a chance of snow . waves
12 to 16 feet building to 18 to 23 feet . waves occasionally
around 28 feet. a gale warning may be needed. 


$$

fzus63 kdtx 250833
glflh 
expires:202512251645;;186296

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am est thu dec 25 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, will move over the james
bay region on thursday. weaker winds will continue through
thursday morning before northerly winds increase as a low pressure
system slides east on friday with wintry precipitation.


lhz362-363-251645-
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-
333 am est thu dec 25 2025

.today...north winds 15 to 20 knots veering to the northeast late
in the afternoon. waves 5 to 7 feet. waves occasionally around
10 feet. 
.tonight...east winds 15 to 20 knots increasing to 20 to 25 knots
early in the morning. a chance of snow after midnight. waves 5 to
7 feet building to 6 to 9 feet early in the morning. waves
occasionally around 12 feet. 
.friday...southeast winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots early in the afternoon.
snow. waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday night...east winds 10 to 15 knots. waves 4 to 6 feet. 
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots. waves 2 to 4 feet. waves occasionally around 8 feet. 
.sunday...southeast winds 10 to 15 knots increasing to 15 to
20 knots early in the evening...then becoming northwest 20 to
25 knots with gusts to around 30 knots by midnight. a chance of
rain early in the morning. rain likely. a chance of snow by
midnight. waves 3 to 5 feet building to 6 to 9 feet by midnight.
waves occasionally around 12 feet. 
.monday...northwest at 40 knot gales with gusts to 45 knot gales.
a chance of snow early in the morning...then snow likely in the
late morning and early afternoon. a chance of snow . waves 14 to
18 feet building to 18 to 23 feet . waves occasionally around
28 feet. a gale warning may be needed. 


$$

fzus63 kdtx 250833
glflh 
expires:202512251645;;186295

open lake forecast for lake huron
national weather service detroit/pontiac mi
333 am est thu dec 25 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...high pressure, 30.50 inches, will move over the james
bay region on thursday. weaker winds will continue through
thursday morning before northerly winds increase as a low pressure
system slides east on friday with wintry precipitation.


lhz361-251645-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
333 am est thu dec 25 2025

.today...north winds 15 to 20 knots becoming northeast 10 to
15 knots in the late morning and afternoon. waves 2 to 4 feet
subsiding to 1 to 3 feet late in the afternoon. 
.tonight...east winds 15 to 20 knots becoming southeast to
30 knots. snow likely after midnight. waves 3 to 5 feet building
to 6 to 9 feet after midnight. waves occasionally around 12 feet.
.friday...southeast winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots early in the afternoon.
snow. waves 8 to 12 feet. waves occasionally around 15 feet. 
.friday night...east winds 10 to 15 knots. waves 4 to 6 feet. 
.saturday...southeast winds 10 to 15 knots. a chance of rain late
in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet late
in the morning...then building to 2 to 4 feet late in the
afternoon. waves occasionally around 8 feet. 
.sunday...southeast winds 10 to 15 knots becoming northwest 20 to
25 knots with gusts to around 30 knots by midnight. a chance of
rain early in the morning. rain likely. snow likely . waves 3 to
5 feet building to 6 to 9 feet by midnight. waves occasionally
around 12 feet. 
.monday...northwest winds to 30 knots increasing to 35 knot gales
early in the evening...then decreasing to 30 knots by midnight.
gusts to 40 knot gales. snow likely until afternoon. a chance of
snow . waves 10 to 14 feet. waves occasionally around 18 feet. a
gale warning may be needed. 


$$

fzus63 kmkx 250904
glflm 
expires:202512251615;;187962

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cst thu dec 25 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...

north winds have developed early this morning as high pressure of
30.5 inches noses into the region from the north. winds will then
turn easterly this afternoon as the high moves east then 
southeasterly tonight as low pressure of 29.7 inches moves across
central illinois. 

stronger low pressure will affect the region late in the weekend
into monday, moving from the central plains into the eastern great
lakes. this will initially result in increasing southeast winds
saturday night and early sunday, followed by a good chance for
gales sunday night and monday as a strong cold front sweeps across
lake michigan. much colder air will also pose a risk for freezing
spray.


lmz261-362-364-366-563-565-567-868-251615-
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-
304 am cst thu dec 25 2025

sheboygan wi to pentwater mi north...

.today...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tonight...southeast winds 15 to 25 kt increasing to 30 kt.
slight chance of snow in the evening, then chance of rain, snow
and light freezing rain overnight. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft. 
.friday...southeast winds to 30 kt becoming east 10 to 20 kt.
rain, snow, light sleet and light freezing rain in the morning,
then chance of rain, light freezing rain and snow in the
afternoon. waves 6 to 9 ft occasionally to 12 ft subsiding to
3 to 5 ft. 
.friday night...northeast winds 5 to 10 kt becoming east. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt. chance of rain and
light freezing rain. waves 2 to 4 ft. 
.sunday...southeast winds 10 to 20 kt backing to north 15 to
25 kt. chance of rain. waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday...northwest gales to 45 kt. freezing spray. chance of
snow. waves 10 to 14 ft occasionally to 18 ft.  

$$

fzus63 kmkx 250904
glflm 
expires:202512251615;;187963

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cst thu dec 25 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...

north winds have developed early this morning as high pressure of
30.5 inches noses into the region from the north. winds will then
turn easterly this afternoon as the high moves east then 
southeasterly tonight as low pressure of 29.7 inches moves across
central illinois. 

stronger low pressure will affect the region late in the weekend
into monday, moving from the central plains into the eastern great
lakes. this will initially result in increasing southeast winds
saturday night and early sunday, followed by a good chance for
gales sunday night and monday as a strong cold front sweeps across
lake michigan. much colder air will also pose a risk for freezing
spray.


lmz080-669-671-673-675-777-779-870-872-874-876-878-251615-
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-
304 am cst thu dec 25 2025

sheboygan wi to pentwater mi south...

.today...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tonight...east winds 15 to 25 kt becoming southeast to 30 kt.
rain overnight. waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft. 
.friday...southeast winds to 30 kt diminishing to 10 to 20 kt
late in the morning, then backing to northeast 10 to 15 kt early
in the afternoon becoming north late. rain in the morning, then
chance of sprinkles in the afternoon. waves 6 to 9 ft
occasionally to 12 ft subsiding to 3 to 5 ft. 
.friday night...north winds 5 to 10 kt becoming northeast. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt. chance of rain.
waves 2 to 4 ft. 
.sunday...south winds 10 to 20 kt veering to northwest to 30 kt.
chance of rain. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.monday...northwest storm force winds to 50 kt. freezing spray.
chance of snow. waves 12 to 16 ft occasionally to 21 ft.  

$$

fzus63 kmqt 250900
glfls 
expires:202512252100;;187605

open lake forecast for lake superior
national weather service marquette mi
400 am est thu dec 25 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...

30.4 inch ridging returns to lake superior today as a 30.5 inch high 
transits northern ontario. low pressure of 29.6 inches moves east 
along the southern end of the great lakes basin on friday. another 
low of 29.6 inches then lifts over lower michigan sunday while 
extending a 29.7 inch trough northward across the lake. by monday, a 
strong high pressure of at least 30.6 inches will reside over the 
great plains as the low deepens to 29.1 inches over quebec, yielding 
a tight pressure gradient across the great lakes.



lsz267-252100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est thu dec 25 2025

...gale warning in effect from late tonight through friday
afternoon...

.early this morning...north winds 20 to 30 knots. freezing spray.
waves 4 to 7 feet occasionally to 9 feet. 
.today...northeast winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then becoming east 15 to 25 knots by
mid afternoon. freezing spray in the morning. a slight chance of
snow showers in the afternoon. waves subsiding to 2 to 4 feet. 
.tonight...southeast winds 20 to 30 knots increasing to gales to
40 knots by midnight. a chance of snow showers in the evening,
then snow showers after midnight. freezing spray after midnight.
waves building to 7 to 10 feet occasionally to 13 feet. 
.friday...southeast gales to 40 knots becoming south 20 to
30 knots by late morning, then diminishing to 15 to 25 knots by
mid afternoon. snow showers in the morning, then a chance of
freezing rain and snow showers in the afternoon. waves subsiding
to 2 to 4 feet. 
.friday night...southeast winds 15 to 25 knots. waves subsiding
to 1 to 3 feet. 
.saturday...southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 2 to 4 feet. 
.saturday night...southeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a chance of rain showers in the
evening. a chance of freezing rain. rain showers, possibly mixed
with snow after midnight. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.sunday...south winds 15 to 25 knots becoming northwest storm
force winds to 50 knots. rain showers likely, then snow showers.
freezing spray. waves building to 12 to 17 feet occasionally to
21 feet. 
.monday...north storm force winds to 55 knots backing northwest.
freezing spray. snow showers. a chance of snow showers. waves
building to 15 to 20 feet occasionally to 25 feet, then subsiding
to 9 to 12 feet occasionally to 15 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250900
glfls 
expires:202512252100;;187600

open lake forecast for lake superior
national weather service marquette mi
400 am est thu dec 25 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...

30.4 inch ridging returns to lake superior today as a 30.5 inch high 
transits northern ontario. low pressure of 29.6 inches moves east 
along the southern end of the great lakes basin on friday. another 
low of 29.6 inches then lifts over lower michigan sunday while 
extending a 29.7 inch trough northward across the lake. by monday, a 
strong high pressure of at least 30.6 inches will reside over the 
great plains as the low deepens to 29.1 inches over quebec, yielding 
a tight pressure gradient across the great lakes.



lsz162-252100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est thu dec 25 2025 /300 am cst thu dec 25 2025/

.early this morning...northeast winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...east winds 15 to 25 knots. a chance of snow showers.
waves building to 4 to 7 feet occasionally to 9 feet. 
.tonight...southeast winds 15 to 25 knots becoming south 10 to
20 knots late. snow showers, possibly mixed with sleet and
freezing rain likely. rain showers likely after midnight. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...southwest winds 5 to 15 knots veering west. a chance of
rain showers, possibly mixed with snow and sleet in the morning.
waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of rain showers. waves calm
to 2 feet. 
.saturday night...south winds 10 to 20 knots veering southwest
after midnight. a chance of rain showers. waves calm to 2 feet. 
.sunday...northwest gales to 45 knots. a chance of rain showers.
a chance of snow showers. heavy freezing spray. waves building to
5 to 8 feet occasionally to 10 feet. 
.monday...northwest gales to 40 knots. heavy freezing spray.
waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250900
glfls 
expires:202512252100;;187601

open lake forecast for lake superior
national weather service marquette mi
400 am est thu dec 25 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...

30.4 inch ridging returns to lake superior today as a 30.5 inch high 
transits northern ontario. low pressure of 29.6 inches moves east 
along the southern end of the great lakes basin on friday. another 
low of 29.6 inches then lifts over lower michigan sunday while 
extending a 29.7 inch trough northward across the lake. by monday, a 
strong high pressure of at least 30.6 inches will reside over the 
great plains as the low deepens to 29.1 inches over quebec, yielding 
a tight pressure gradient across the great lakes.



lsz263-252100-
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 thu dec 25 2025

.early this morning...northeast winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...northeast winds 15 to 25 knots veering east. a slight
chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tonight...southeast winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by midnight,
then becoming south 20 to 30 knots late. a chance of snow showers
in the evening, then snow showers, possibly mixed with rain and
sleet likely after midnight. waves building to 6 to 10 feet
occasionally to 13 feet. 
.friday...south winds 15 to 25 knots becoming west 5 to 15 knots.
a chance of rain showers, possibly mixed with snow and sleet in
the morning. waves subsiding to 2 to 4 feet. 
.friday night...southwest winds less than 10 knots becoming south
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...south winds 5 to 15 knots. a chance of rain
showers. waves 1 to 3 feet. 
.sunday...northwest gales to 45 knots. a chance of rain showers.
a chance of snow showers. freezing spray. waves building to 10 to
14 feet occasionally to 18 feet. 
.monday...northwest storm force winds to 50 knots diminishing to
gales to 45 knots. heavy freezing spray. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250900
glfls 
expires:202512252100;;187602

open lake forecast for lake superior
national weather service marquette mi
400 am est thu dec 25 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...

30.4 inch ridging returns to lake superior today as a 30.5 inch high 
transits northern ontario. low pressure of 29.6 inches moves east 
along the southern end of the great lakes basin on friday. another 
low of 29.6 inches then lifts over lower michigan sunday while 
extending a 29.7 inch trough northward across the lake. by monday, a 
strong high pressure of at least 30.6 inches will reside over the 
great plains as the low deepens to 29.1 inches over quebec, yielding 
a tight pressure gradient across the great lakes.



lsz264-252100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est thu dec 25 2025

...gale warning in effect from late tonight through friday
afternoon...

.early this morning...northeast winds 15 to 25 knots. freezing
spray. waves 3 to 6 feet occasionally to 8 feet. 
.today...northeast winds 15 to 25 knots becoming east 10 to
20 knots by late morning, then becoming southeast 15 to 25 knots
by mid afternoon. freezing spray in the morning. a slight chance
of snow showers in the morning, then snow showers likely in the
afternoon. waves subsiding to 3 to 6 feet occasionally to 8 feet.
.tonight...southeast winds 20 to 30 knots increasing to gales to
35 knots by midnight, then veering south late. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet. 
.friday...south gales to 35 knots becoming southwest 15 to
25 knots by late morning, then becoming west 5 to 15 knots by mid
afternoon. snow showers, possibly mixed with rain and sleet
likely in the morning. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...south winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...south winds 10 to 20 knots becoming southeast 15 to
25 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of rain showers. waves building
to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest gales to 35 knots becoming north storm force
winds to 55 knots. a chance of rain showers. a chance of snow
showers. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 12 to 17 feet occasionally to 21 feet. 
.monday...north storm force winds to 55 knots backing northwest.
heavy freezing spray. waves building to 15 to 20 feet
occasionally to 25 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250900
glfls 
expires:202512252100;;187603

open lake forecast for lake superior
national weather service marquette mi
400 am est thu dec 25 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...

30.4 inch ridging returns to lake superior today as a 30.5 inch high 
transits northern ontario. low pressure of 29.6 inches moves east 
along the southern end of the great lakes basin on friday. another 
low of 29.6 inches then lifts over lower michigan sunday while 
extending a 29.7 inch trough northward across the lake. by monday, a 
strong high pressure of at least 30.6 inches will reside over the 
great plains as the low deepens to 29.1 inches over quebec, yielding 
a tight pressure gradient across the great lakes.



lsz265-252100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est thu dec 25 2025

.early this morning...north winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet. 
.today...northeast winds 20 to 30 knots becoming east 15 to
25 knots by late morning, then becoming southeast 20 to 30 knots
by mid afternoon. a chance of snow showers in the afternoon.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tonight...southeast winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by midnight.
snow showers. waves building to 8 to 11 feet occasionally to
14 feet. 
.friday...south winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then becoming southwest 10 to 20 knots
by mid afternoon. snow showers likely, possibly mixed with
freezing rain and sleet in the morning, then a slight chance of
rain showers, possibly mixed with snow in the afternoon. waves
subsiding to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots backing south after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.saturday night...south winds 15 to 25 knots. a chance of rain
showers. waves subsiding to 1 to 3 feet. 
.sunday...west gales to 35 knots becoming northwest storm force
winds to 60 knots. rain showers likely. snow showers. freezing
spray. waves building to 15 to 20 feet occasionally to 25 feet. 
.monday...northwest storm force winds to 60 knots. heavy freezing
spray. snow showers likely. a chance of snow showers. waves
subsiding to 6 to 9 feet occasionally to 11 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250900
glfls 
expires:202512252100;;187604

open lake forecast for lake superior
national weather service marquette mi
400 am est thu dec 25 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...

30.4 inch ridging returns to lake superior today as a 30.5 inch high 
transits northern ontario. low pressure of 29.6 inches moves east 
along the southern end of the great lakes basin on friday. another 
low of 29.6 inches then lifts over lower michigan sunday while 
extending a 29.7 inch trough northward across the lake. by monday, a 
strong high pressure of at least 30.6 inches will reside over the 
great plains as the low deepens to 29.1 inches over quebec, yielding 
a tight pressure gradient across the great lakes.



lsz266-252100-
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 thu dec 25 2025

...gale warning in effect from late tonight through friday
afternoon...

.early this morning...north winds 20 to 30 knots. freezing spray.
waves 5 to 8 feet occasionally to 10 feet. 
.today...northeast winds 20 to 30 knots becoming east 15 to
25 knots. freezing spray in the morning. a chance of snow showers
in the afternoon. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.tonight...southeast winds 20 to 30 knots increasing to gales to
35 knots by midnight. freezing spray in the evening. snow
showers. waves building to 10 to 14 feet occasionally to 18 feet.
.friday...south gales to 35 knots diminishing to 10 to 20 knots.
snow showers, possibly mixed with sleet in the morning. a chance
of freezing rain. a chance of snow showers, possibly mixed with
rain in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...south winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.saturday...south winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...south winds 15 to 25 knots. a chance of rain
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday...south gales to 35 knots becoming northwest storm force
winds to 55 knots. snow showers, possibly mixed with rain.
freezing spray. waves subsiding to 2 to 4 feet, then building to
17 to 22 feet occasionally to 28 feet. 
.monday...north storm force winds to 60 knots backing northwest.
heavy freezing spray. a chance of snow showers. waves building to
20 to 25 feet occasionally to 31 feet, then subsiding to 10 to
14 feet occasionally to 18 feet. 

note, wave height forecasts are for ice free areas.

$$