fzus63 kdtx 300821
glflh 
expires:202512301630;;483304

open lake forecast for lake huron
national weather service detroit/pontiac mi
321 am est tue dec 30 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...low pressure, 28.90 inches, continues moving away from
the great lakes to the atlantic coast today. this allows gales,
snow squalls, and freezing spray to diminish across the central
great lakes. the next weaker clipper low pressure system arrives
tonight in a persistent northwest flow pattern through mid week.


lhz362-363-301630-
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-
321 am est tue dec 30 2025

...gale warning in effect until 11 am est this morning...
...heavy freezing spray warning in effect until 11 am est this
morning...

.today...northwest at 35 knot gales with gusts to 40 knot gales
becoming west 20 to 25 knots with gusts to around 30 knots.
freezing spray. a chance of snow in the afternoon. waves 14 to
18 feet subsiding to 10 to 14 feet in the afternoon. waves
occasionally around 23 feet. 
.tonight...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots after midnight. snow likely
in the evening...then a chance of snow after midnight. waves 8 to
12 feet. waves occasionally around 15 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest 20 to
25 knots with gusts to around 30 knots early in the afternoon. a
chance of snow in the morning...then snow likely in the
afternoon. freezing spray in the afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.wednesday night...northwest winds to 30 knots decreasing to
20 to 25 knots in the late evening and overnight. a chance of
snow in the evening. freezing spray. waves 8 to 12 feet. waves
occasionally around 15 feet. 
.thursday...west winds 20 to 25 knots. gusts to 30 knots in the
morning. freezing spray. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.friday...west winds 20 to 25 knots decreasing to 15 to 20 knots.
freezing spray early in the morning. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.saturday...west winds 15 to 20 knots decreasing to 10 to
15 knots. waves 3 to 5 feet. 


$$

fzus63 kdtx 300821
glflh 
expires:202512301630;;483303

open lake forecast for lake huron
national weather service detroit/pontiac mi
321 am est tue dec 30 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...low pressure, 28.90 inches, continues moving away from
the great lakes to the atlantic coast today. this allows gales,
snow squalls, and freezing spray to diminish across the central
great lakes. the next weaker clipper low pressure system arrives
tonight in a persistent northwest flow pattern through mid week.


lhz361-301630-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
321 am est tue dec 30 2025

...gale warning in effect until 11 am est this morning...
...heavy freezing spray warning in effect until 11 am est this
morning...

.today...northwest winds 20 to 25 knots. gusts to 35 knot gales in
the morning. freezing spray. a chance of snow in the afternoon. 
waves 8 to 12 feet. waves occasionally around 15 feet. 
.tonight...northwest winds 15 to 20 knots. snow likely. waves
5 to 7 feet. waves occasionally around 10 feet. 
.wednesday...northwest winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots in the late morning and
afternoon. a chance of snow in the morning...then snow likely in
the afternoon. waves 3 to 5 feet building to 5 to 7 feet early in
the afternoon. waves occasionally around 10 feet. 
.wednesday night...northwest winds 20 to 25 knots. gusts to
30 knots early in the evening. freezing spray. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.thursday...west winds 20 to 25 knots. gusts to 30 knots.
freezing spray. a chance of snow late in the afternoon. waves
6 to 9 feet. waves occasionally around 12 feet. 
.friday...west winds 20 to 25 knots decreasing to 15 to 20 knots.
freezing spray early in the morning. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.saturday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots in the late morning and early afternoon...then becoming
west 10 to 15 knots . waves 2 to 4 feet subsiding to 1 to 3 feet.


$$

fzus63 kdtx 300821
glflh 
expires:202512301630;;483305

open lake forecast for lake huron
national weather service detroit/pontiac mi
321 am est tue dec 30 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...low pressure, 28.90 inches, continues moving away from
the great lakes to the atlantic coast today. this allows gales,
snow squalls, and freezing spray to diminish across the central
great lakes. the next weaker clipper low pressure system arrives
tonight in a persistent northwest flow pattern through mid week.


lhz462>464-301630-
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-
321 am est tue dec 30 2025

...gale warning in effect until 11 am est this morning...

.today...northwest winds to 30 knots becoming west 20 to 25 knots
in the afternoon. gusts to 35 knot gales in the morning. freezing
spray in the morning. a chance of snow in the afternoon. waves 14
to 18 feet subsiding to 10 to 14 feet in the afternoon. waves 
occasionally around 23 feet. 
.tonight...west winds 20 to 25 knots decreasing to 15 to 20 knots
after midnight. snow likely. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.wednesday...west winds 15 to 20 knots increasing to 20 to
25 knots early in the afternoon. snow likely in the morning...
then snow in the afternoon. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.wednesday night...northwest winds 20 to 25 knots increasing to
30 knots by midnight...then decreasing to 20 to 25 knots after
midnight. a chance of snow. freezing spray. waves 8 to 12 feet.
waves occasionally around 15 feet. 
.thursday...west winds 20 to 25 knots decreasing to 15 to
20 knots late in the afternoon. freezing spray. a chance of snow
late in the afternoon. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.friday...west winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.saturday...west winds 10 to 15 knots. waves 2 to 4 feet. 


$$

fzus63 kmkx 300259
glflm 
expires:202512301015;;470169

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cst mon dec 29 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...

strong low pressure around 28.9 inches will move into eastern 
quebec overnight. northwest gales will linger overnight, before
decreasing early tuesday morning. the gale warning remains in
effect through late tonight. moderate freezing spray is expected 
into tuesday morning as well. northwest winds will remain gusty
tuesday into most of the rest of the week.

high pressure around 30.1 inches will shift southeast into the
region wednesday night into thursday, with strong low pressure
around 28.9 inches over hudson bay. this will bring stronger 
northwest winds to northern portions of the lake, with a few gale 
force gusts possible. 


lmz261-362-364-366-563-565-567-868-301015-
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-
859 pm cst mon dec 29 2025

sheboygan wi to pentwater mi north...

...gale warning in effect until 3 am cst tuesday...

.rest of tonight...northwest gales to 40 kt diminishing to 30 kt.
freezing spray. scattered snow showers through early evening,
then isolated snow showers overnight. waves 12 to 16 ft
occasionally to 21 ft subsiding to 8 to 11 ft occasionally to
14 ft. 
.tuesday...northwest winds to 30 kt becoming west 10 to 20 kt.
freezing spray in the morning. chance of snow in the morning,
then snow likely in the afternoon. waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.tuesday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 4 to 7 ft occasionally to 9 ft. 
.wednesday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday night...northwest gales to 35 kt diminishing to 30 kt.
freezing spray. waves 6 to 9 ft occasionally to 12 ft. 
.thursday...northwest winds to 30 kt becoming west. freezing
spray. waves 4 to 7 ft occasionally to 9 ft. 
.thursday night...west winds to 30 kt. freezing spray. waves 4 to
6 ft occasionally to 8 ft. 
.friday...west winds 15 to 25 kt. waves 3 to 5 ft. 
.saturday...northwest winds 10 to 15 kt becoming west. waves 1 to
3 ft.  

$$

fzus63 kmkx 300259
glflm 
expires:202512301015;;470170

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cst mon dec 29 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...

strong low pressure around 28.9 inches will move into eastern 
quebec overnight. northwest gales will linger overnight, before
decreasing early tuesday morning. the gale warning remains in
effect through late tonight. moderate freezing spray is expected 
into tuesday morning as well. northwest winds will remain gusty
tuesday into most of the rest of the week.

high pressure around 30.1 inches will shift southeast into the
region wednesday night into thursday, with strong low pressure
around 28.9 inches over hudson bay. this will bring stronger 
northwest winds to northern portions of the lake, with a few gale 
force gusts possible. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-301015-
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-
859 pm cst mon dec 29 2025

sheboygan wi to pentwater mi south...

...gale warning in effect until 3 am cst tuesday...

.rest of tonight...northwest gales to 35 kt diminishing to 30 kt.
scattered snow showers through early evening. freezing spray.
waves 14 to 18 ft occasionally to 23 ft subsiding to 12 to 16 ft
occasionally to 21 ft. 
.tuesday...northwest winds 15 to 25 kt becoming west. freezing
spray in the morning. chance of snow in the morning, then snow
likely in the afternoon. waves 7 to 10 ft occasionally to 13 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.tuesday night...west winds 15 to 25 kt becoming northwest. snow
likely in the evening. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday...northwest winds to 30 kt. chance of snow. freezing
spray in the afternoon. waves 7 to 10 ft occasionally to 13 ft
building to 8 to 11 ft occasionally to 14 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 15 to
25 kt. chance of snow in the evening. freezing spray. waves 8 to
11 ft occasionally to 14 ft subsiding to 7 to 10 ft occasionally
to 13 ft. 
.thursday...northwest winds 15 to 25 kt becoming west. freezing
spray. waves 6 to 9 ft occasionally to 12 ft subsiding to 5 to
8 ft occasionally to 10 ft. 
.thursday night...west winds 15 to 25 kt. freezing spray. waves
4 to 7 ft occasionally to 9 ft. 
.friday...west winds 10 to 20 kt becoming northwest. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.saturday...northwest winds 10 to 15 kt. waves 2 to 4 ft.  

$$

fzus63 kmqt 300301
glfls 
expires:202512300900;;470331

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 29 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 29.0 inch low was over quebec this evening with a 30.5 inch ridge 
over the plains. the low will continue to lift north and then 
retrograde westward to the hudson bay on tuesday night into 
wednesday. as the ridge slides southeast it will extend a 30.1 inch 
ridge over lake superior on tuesday, before a 29.9 inch trough 
builds over the lake on tuesday night. the low will remain over the 
hudson bay through the rest of the week extending 29.8 inch 
troughing southwest over lake superior.



lsz265-300900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est mon dec 29 2025

...gale warning in effect until 1 am est tuesday...

.rest of tonight...northwest gales to 40 knots diminishing to
20 to 30 knots late. heavy freezing spray. a slight chance of
snow showers. waves 11 to 15 feet occasionally to 19 feet
subsiding to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray in the morning. a chance of snow showers
in the morning, then snow showers likely in the afternoon. waves
subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 20 to 30 knots increasing to
gales to 35 knots late. freezing spray. snow showers likely in
the evening. a chance of snow showers after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves building to 8 to 11 feet
occasionally to 14 feet. 
.wednesday night...northwest gales to 45 knots. heavy freezing
spray. a slight chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet. 
.thursday...northwest gales to 45 knots becoming west gales to
40 knots in the afternoon. heavy freezing spray. waves subsiding
to 7 to 10 feet occasionally to 13 feet. 
.thursday night...west gales to 40 knots veering northwest after
midnight. heavy freezing spray. a chance of snow showers. waves
subsiding to 6 to 9 feet occasionally to 11 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots. freezing spray. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 15 to 25 knots backing west. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 300301
glfls 
expires:202512300900;;470332

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 29 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 29.0 inch low was over quebec this evening with a 30.5 inch ridge 
over the plains. the low will continue to lift north and then 
retrograde westward to the hudson bay on tuesday night into 
wednesday. as the ridge slides southeast it will extend a 30.1 inch 
ridge over lake superior on tuesday, before a 29.9 inch trough 
builds over the lake on tuesday night. the low will remain over the 
hudson bay through the rest of the week extending 29.8 inch 
troughing southwest over lake superior.



lsz266-300900-
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 29 2025

...gale warning in effect until 7 am est tuesday...

.rest of tonight...north gales to 45 knots becoming northwest
gales to 40 knots by midnight. heavy freezing spray. a slight
chance of snow showers. waves 15 to 20 feet occasionally to
25 feet subsiding to 9 to 12 feet occasionally to 15 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north winds 15 to 25 knots increasing to gales
to 35 knots. freezing spray. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest gales to 40 knots. heavy freezing spray.
snow showers. waves building to 12 to 17 feet occasionally to
21 feet. 
.wednesday night...northwest gales to 45 knots. heavy freezing
spray. snow showers likely in the evening. a chance of snow
showers after midnight. waves 12 to 17 feet occasionally to
21 feet. 
.thursday...northwest gales to 45 knots backing west in the
afternoon. heavy freezing spray. a chance of snow showers. waves
subsiding to 11 to 15 feet occasionally to 19 feet. 
.thursday night...northwest gales to 45 knots. heavy freezing
spray. snow showers likely in the evening. a chance of snow
showers after midnight. waves subsiding to 9 to 12 feet
occasionally to 15 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots. freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.saturday...northwest winds 15 to 25 knots backing west. 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 300301
glfls 
expires:202512300900;;470333

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 29 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 29.0 inch low was over quebec this evening with a 30.5 inch ridge 
over the plains. the low will continue to lift north and then 
retrograde westward to the hudson bay on tuesday night into 
wednesday. as the ridge slides southeast it will extend a 30.1 inch 
ridge over lake superior on tuesday, before a 29.9 inch trough 
builds over the lake on tuesday night. the low will remain over the 
hudson bay through the rest of the week extending 29.8 inch 
troughing southwest over lake superior.



lsz267-300900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est mon dec 29 2025

...gale warning in effect until 7 am est tuesday...

.rest of tonight...north gales to 45 knots becoming northwest
gales to 40 knots by midnight. heavy freezing spray. a chance of
snow showers. waves 15 to 20 feet occasionally to 25 feet
subsiding to 9 to 12 feet occasionally to 15 feet. 
.tuesday...northwest gales to 35 knots diminishing to 15 to
25 knots. freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north winds 20 to 30 knots. freezing spray. snow
showers likely in the evening. a chance of snow showers after
midnight. waves building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...north gales to 35 knots becoming northwest gales to
40 knots in the afternoon. heavy freezing spray. snow showers.
waves building to 11 to 15 feet occasionally to 19 feet. 
.wednesday night...northwest gales to 40 knots. heavy freezing
spray. snow showers likely in the evening. a chance of snow
showers after midnight. waves building to 12 to 17 feet
occasionally to 21 feet. 
.thursday...northwest gales to 40 knots backing west in the
afternoon. heavy freezing spray. snow showers likely. waves
subsiding to 12 to 17 feet occasionally to 21 feet. 
.thursday night...west gales to 40 knots veering northwest after
midnight. freezing spray. snow showers likely. waves subsiding to
9 to 12 feet occasionally to 15 feet. 
.friday...northwest winds 20 to 30 knots. freezing spray. a
chance of snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.saturday...northwest winds 15 to 25 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 300301
glfls 
expires:202512300900;;470330

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 29 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 29.0 inch low was over quebec this evening with a 30.5 inch ridge 
over the plains. the low will continue to lift north and then 
retrograde westward to the hudson bay on tuesday night into 
wednesday. as the ridge slides southeast it will extend a 30.1 inch 
ridge over lake superior on tuesday, before a 29.9 inch trough 
builds over the lake on tuesday night. the low will remain over the 
hudson bay through the rest of the week extending 29.8 inch 
troughing southwest over lake superior.



lsz264-300900-
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 29 2025

.rest of tonight...north winds to 30 knots with a few gale force
gusts to 35 knots possible becoming northwest 20 to 30 knots
late. heavy freezing spray. waves 10 to 14 feet occasionally to
18 feet subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. freezing spray in the morning. a chance of snow
showers. waves subsiding to 1 to 3 feet. 
.tuesday night...north winds 15 to 25 knots increasing to
30 knots with a few gale force gusts to 35 knots possible late.
heavy freezing spray. a chance of snow showers. waves building to
6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest gales to 40 knots. heavy freezing spray. a
slight chance of snow showers. waves building to 7 to 11 feet
occasionally to 14 feet. 
.wednesday night...northwest gales to 40 knots. heavy freezing
spray. waves building to 9 to 12 feet occasionally to 15 feet. 
.thursday...northwest gales to 45 knots becoming west gales to
40 knots in the afternoon. heavy freezing spray. waves subsiding
to 8 to 11 feet occasionally to 14 feet. 
.thursday night...west gales to 40 knots becoming northwest gales
to 35 knots after midnight. heavy freezing spray. waves subsiding
to 6 to 9 feet occasionally to 11 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots. heavy freezing spray. waves subsiding to 2 to 4 feet. 
.saturday...northwest winds 10 to 20 knots backing west. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 300301
glfls 
expires:202512300900;;470329

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 29 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 29.0 inch low was over quebec this evening with a 30.5 inch ridge 
over the plains. the low will continue to lift north and then 
retrograde westward to the hudson bay on tuesday night into 
wednesday. as the ridge slides southeast it will extend a 30.1 inch 
ridge over lake superior on tuesday, before a 29.9 inch trough 
builds over the lake on tuesday night. the low will remain over the 
hudson bay through the rest of the week extending 29.8 inch 
troughing southwest over lake superior.



lsz263-300900-
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 29 2025

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 300301
glfls 
expires:202512300900;;470328

open lake forecast for lake superior
national weather service marquette mi
1000 pm est mon dec 29 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 29.0 inch low was over quebec this evening with a 30.5 inch ridge 
over the plains. the low will continue to lift north and then 
retrograde westward to the hudson bay on tuesday night into 
wednesday. as the ridge slides southeast it will extend a 30.1 inch 
ridge over lake superior on tuesday, before a 29.9 inch trough 
builds over the lake on tuesday night. the low will remain over the 
hudson bay through the rest of the week extending 29.8 inch 
troughing southwest over lake superior.



lsz162-300900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est mon dec 29 2025 /900 pm cst mon dec 29 2025/

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

note, wave height forecasts are for ice free areas.

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