fzus63 kdtx 182041
glflh 
expires:202601190445;;118649

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm est sun jan 18 2026

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...several successive disturbances of varying magnitude
work through the central great lakes this weekend and into next
week. this results in elevated winds, waves, freezing spray, and
additional snowfall, especially once arctic air surges by monday.
gale warnings are in effect for most waters monday.


lhz361-190445-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
341 pm est sun jan 18 2026

...heavy freezing spray warning in effect from monday morning
through monday evening...

.tonight...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. numerous snow showers in the
evening...then snow showers after midnight. waves 3 to 5 feet. 
.monday...southwest winds 15 to 20 knots becoming west 20 to
25 knots late in the morning...then veering to the northwest with
gusts to around 30 knots early in the afternoon increasing to
30 knots late in the afternoon. snow showers. heavy freezing
spray in the afternoon. waves 4 to 6 feet building to 8 to
12 feet in the afternoon. waves occasionally around 15 feet. 
.monday night...west winds 20 to 25 knots. gusts to 30 knots
early in the evening. scattered snow showers in the evening.
heavy freezing spray. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.tuesday...west winds 15 to 20 knots increasing to 20 to 25 knots
in the late morning and afternoon. heavy freezing spray. waves
5 to 7 feet. waves occasionally around 10 feet. 
.tuesday night...southwest winds 15 to 20 knots decreasing to
10 to 15 knots after midnight. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.wednesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots late in the evening. a chance of snow. freezing spray
late in the evening. waves 2 to 4 feet building to 5 to 7 feet
late in the evening. waves occasionally around 10 feet. 
.thursday...west winds 20 to 25 knots decreasing to 15 to
20 knots by midnight. heavy freezing spray. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.friday...west winds 15 to 20 knots becoming northwest 10 to
15 knots by midnight. waves 4 to 6 feet. waves occasionally
around 8 feet. 


$$

fzus63 kdtx 182041
glflh 
expires:202601190445;;118650

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 pm est sun jan 18 2026

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...several successive disturbances of varying magnitude
work through the central great lakes this weekend and into next
week. this results in elevated winds, waves, freezing spray, and
additional snowfall, especially once arctic air surges by monday.
gale warnings are in effect for most waters monday.


lhz362-363-462-190445-
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-
lake huron from port austin to harbor beach beyond 5nm off shore-
341 pm est sun jan 18 2026

...heavy freezing spray warning in effect from monday morning
through monday evening...
...gale warning in effect from monday morning through monday
evening...

.tonight...southwest winds 15 to 20 knots. scattered snow showers
in the evening...then numerous snow showers after midnight. waves
4 to 6 feet. 
.monday...southwest winds 15 to 20 knots becoming west to
30 knots with gusts to 35 knot gales. numerous snow showers.
heavy freezing spray. waves 5 to 7 feet building to 10 to 14 feet
in the afternoon. waves occasionally around 18 feet. 
.monday night...west winds to 30 knots decreasing to 20 to
25 knots in the late evening and overnight. gusts to 35 knot
gales. scattered snow showers in the evening. heavy freezing
spray. waves 10 to 14 feet subsiding to 8 to 12 feet after
midnight. waves occasionally around 18 feet. 
.tuesday...west winds 20 to 25 knots. gusts to 30 knots early in
the morning. heavy freezing spray. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.tuesday night...southwest winds 20 to 25 knots decreasing to
15 to 20 knots after midnight. freezing spray. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west 20 to
25 knots with gusts to around 30 knots late in the evening. a
chance of snow. freezing spray late in the evening. waves 5 to
7 feet. waves occasionally around 10 feet. 
.thursday...west winds 20 to 25 knots. gusts to 30 knots. heavy
freezing spray. waves 8 to 12 feet. waves occasionally around
15 feet. 
.friday...west winds 15 to 20 knots. heavy freezing spray until
afternoon. waves 5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kmkx 182123
glflm 
expires:202601190430;;121867

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
323 pm cst sun jan 18 2026

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...

low pressure will deepen to 29.5 inches over the northern great
lakes by sunrise monday and sweep an arctic front across the lake
after midnight tonight. northwest gales will develop and last 
through monday afternoon with a gale warning in effect, while a 
heavy freezing spray warning will also go into effect and last 
through tuesday morning.

high pressure around 30.5 inches will shift across the southern
and eastern portion of the country for tuesday into wednesday,
supporting modest west to southwest winds over lake michigan.
a couple more cold frontal passages will bring a return of brisk
west to northwest winds for later wednesday through friday.  
heavy freezing spray may also return. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-190430-
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-
323 pm cst sun jan 18 2026

sheboygan wi to pentwater mi south...

...gale warning in effect from midnight cst tonight through
monday afternoon...
...heavy freezing spray warning in effect from midnight cst
tonight through tuesday morning...

.tonight...southwest winds 15 to 25 kt becoming west to 30 kt
late this evening, then increasing to gales to 40 kt after
midnight becoming northwest late. freezing spray this evening,
then heavy freezing spray overnight. snow. waves 4 to 7 ft
occasionally to 9 ft building to 8 to 12 ft occasionally to
16 ft. 
.monday...northwest gales to 40 kt becoming west to 30 kt. heavy
freezing spray. chance of snow. waves 12 to 16 ft occasionally to
21 ft. 
.monday night...west winds to 30 kt. heavy freezing spray. chance
of snow. waves 8 to 12 ft occasionally to 16 ft subsiding to 8 to
11 ft occasionally to 14 ft. 
.tuesday...west winds to 30 kt diminishing to 15 to 25 kt. chance
of snow in the morning. heavy freezing spray in the morning, then
freezing spray in the afternoon. waves 6 to 9 ft occasionally to
12 ft. 
.tuesday night...southwest winds 10 to 20 kt increasing to 15 to
25 kt. snow likely overnight. waves 4 to 7 ft occasionally to
9 ft building to 5 to 8 ft occasionally to 10 ft. 
.wednesday...southwest winds 15 to 25 kt becoming west to 30 kt.
chance of snow. waves 6 to 9 ft occasionally to 12 ft building to
7 to 10 ft occasionally to 13 ft. 
.wednesday night...west winds to 30 kt. freezing spray. waves
8 to 11 ft occasionally to 14 ft. 
.thursday...west winds to 30 kt. freezing spray. chance of snow.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.friday...northwest winds 15 to 25 kt. chance of snow. waves 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 182123
glflm 
expires:202601190430;;121866

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
323 pm cst sun jan 18 2026

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...

low pressure will deepen to 29.5 inches over the northern great
lakes by sunrise monday and sweep an arctic front across the lake
after midnight tonight. northwest gales will develop and last 
through monday afternoon with a gale warning in effect, while a 
heavy freezing spray warning will also go into effect and last 
through tuesday morning.

high pressure around 30.5 inches will shift across the southern
and eastern portion of the country for tuesday into wednesday,
supporting modest west to southwest winds over lake michigan.
a couple more cold frontal passages will bring a return of brisk
west to northwest winds for later wednesday through friday.  
heavy freezing spray may also return. 


lmz261-362-364-366-563-565-567-868-190430-
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-
323 pm cst sun jan 18 2026

sheboygan wi to pentwater mi north...

...gale warning in effect from midnight cst tonight through
monday afternoon...
...heavy freezing spray warning in effect from midnight cst
tonight through tuesday morning...

.tonight...west winds 15 to 25 kt increasing to 30 kt after
midnight, then increasing to gales to 40 kt late. snow.
visibility one quarter mile or less at times overnight. waves
4 to 6 ft occasionally to 8 ft building to 6 to 9 ft occasionally
to 12 ft. 
.monday...northwest gales to 40 kt diminishing to 30 kt. chance
of snow. visibility one quarter mile or less at times in the
morning. waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 11 ft occasionally to 14 ft. 
.monday night...west winds to 30 kt. heavy freezing spray. waves
7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.tuesday...west winds to 30 kt. heavy freezing spray in the
morning. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.tuesday night...west winds 15 to 25 kt becoming southwest 10 to
20 kt. chance of snow overnight. waves 4 to 6 ft occasionally to
8 ft building to 4 to 7 ft occasionally to 9 ft. 
.wednesday...west winds 10 to 20 kt increasing to 15 to 25 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft building to
5 to 8 ft occasionally to 10 ft. 
.wednesday night...west winds to 30 kt. freezing spray. waves
6 to 9 ft occasionally to 12 ft. 
.thursday...west winds to 30 kt. heavy freezing spray. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.friday...northwest winds 15 to 25 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 182101
glfls 
expires:202601190900;;119285

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 18 2026

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 deepening low of around 29.6 inches over lake superior will drop 
south into the eastern u.p by monday morning. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds weak ridging of 30.0 inches over much 
of lake superior on monday which strengthens to 30.1 inches by 
tuesday morning. a low of at least 29.8 inches then moves over lake 
superior on wednesday. as the low continues east on thursday, a weak 
remnant trough of 30.0 inches extends over the lake. after that, a 
30.8 inch high builds from the canadian prairies into the northern 
plains thursday night through friday. this high will build into the 
upper midwest friday night into saturday.



lsz264-190900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm est sun jan 18 2026

...heavy freezing spray warning in effect through tuesday
evening...
...gale warning in effect from 10 pm est this evening through
monday afternoon...

.late this afternoon...north winds 20 to 30 knots. snow showers.
waves 3 to 6 feet occasionally to 8 feet. 
.tonight...north gales to 35 knots. heavy freezing spray. snow
showers. waves building to 10 to 14 feet occasionally to 18 feet.
.monday...north gales to 35 knots backing northwest by late
morning, then diminishing to 20 to 30 knots by mid afternoon.
heavy freezing spray. snow showers likely. waves subsiding to
4 to 7 feet occasionally to 9 feet. 
.monday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight, then increasing to 20 to 30 knots
late. a slight chance of snow showers in the evening. heavy
freezing spray. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray. a slight chance
of snow showers. waves 3 to 6 feet occasionally to 8 feet. 
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. freezing spray in the evening. waves
subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...northwest winds 20 to 30 knots. heavy freezing
spray. waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday...northwest winds 20 to 30 knots. heavy freezing spray.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots. heavy freezing spray.
waves building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202601190900;;119286

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 18 2026

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 deepening low of around 29.6 inches over lake superior will drop 
south into the eastern u.p by monday morning. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds weak ridging of 30.0 inches over much 
of lake superior on monday which strengthens to 30.1 inches by 
tuesday morning. a low of at least 29.8 inches then moves over lake 
superior on wednesday. as the low continues east on thursday, a weak 
remnant trough of 30.0 inches extends over the lake. after that, a 
30.8 inch high builds from the canadian prairies into the northern 
plains thursday night through friday. this high will build into the 
upper midwest friday night into saturday.



lsz265-190900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm est sun jan 18 2026

...gale warning in effect from 1 am est monday through monday
afternoon...
...heavy freezing spray warning in effect from 1 am est monday
through tuesday evening...

.late this afternoon...west winds 15 to 25 knots. snow showers
likely. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...west winds 20 to 30 knots becoming north gales to
45 knots by midnight. snow showers. heavy freezing spray after
midnight. waves building to 12 to 17 feet occasionally to
21 feet. 
.monday...northwest gales to 40 knots. heavy freezing spray. snow
showers likely. waves subsiding to 5 to 8 feet occasionally to
10 feet. 
.monday night...northwest gales to 35 knots. heavy freezing
spray. a chance of snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. heavy freezing spray. a chance of snow showers.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...southwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...southwest winds 15 to 25 knots veering west in the
afternoon. a chance of snow showers. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.wednesday night...northwest gales to 40 knots. heavy freezing
spray. a chance of snow showers. waves building to 5 to 8 feet
occasionally to 10 feet. 
.thursday...northwest gales to 35 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday...northwest gales to 35 knots diminishing to 20 to
30 knots. a chance of snow showers. waves 3 to 5 feet
occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202601190900;;119287

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 18 2026

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 deepening low of around 29.6 inches over lake superior will drop 
south into the eastern u.p by monday morning. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds weak ridging of 30.0 inches over much 
of lake superior on monday which strengthens to 30.1 inches by 
tuesday morning. a low of at least 29.8 inches then moves over lake 
superior on wednesday. as the low continues east on thursday, a weak 
remnant trough of 30.0 inches extends over the lake. after that, a 
30.8 inch high builds from the canadian prairies into the northern 
plains thursday night through friday. this high will build into the 
upper midwest friday night into saturday.



lsz266-190900-
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-
401 pm est sun jan 18 2026

...gale warning in effect from 1 am est monday through monday
evening...
...heavy freezing spray warning in effect from 1 am est monday
through tuesday evening...

.late this afternoon...west winds 15 to 25 knots. snow showers.
waves 3 to 5 feet occasionally to 7 feet. 
.tonight...west gales to 35 knots becoming north gales to
40 knots by midnight. heavy freezing spray. snow showers. waves
building to 12 to 17 feet occasionally to 21 feet. 
.monday...north gales to 45 knots becoming northwest gales to
40 knots. heavy freezing spray. snow showers. waves subsiding to
8 to 11 feet occasionally to 14 feet. 
.monday night...northwest gales to 35 knots. heavy freezing
spray. a chance of snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.tuesday...west gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. heavy freezing spray. snow showers likely in
the morning. a chance of snow showers in the afternoon. waves
building to 6 to 10 feet occasionally to 13 feet. 
.tuesday night...west winds 20 to 30 knots becoming southwest
15 to 25 knots after midnight. freezing spray. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday...southwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. a chance of snow showers. freezing
spray in the afternoon. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...northwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. heavy freezing spray. snow
showers likely in the evening. a chance of snow showers after
midnight. waves building to 7 to 10 feet occasionally to 13 feet.
.thursday...northwest gales to 35 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.friday...northwest winds 20 to 30 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 4 to 8 feet
occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202601190900;;119288

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 18 2026

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 deepening low of around 29.6 inches over lake superior will drop 
south into the eastern u.p by monday morning. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds weak ridging of 30.0 inches over much 
of lake superior on monday which strengthens to 30.1 inches by 
tuesday morning. a low of at least 29.8 inches then moves over lake 
superior on wednesday. as the low continues east on thursday, a weak 
remnant trough of 30.0 inches extends over the lake. after that, a 
30.8 inch high builds from the canadian prairies into the northern 
plains thursday night through friday. this high will build into the 
upper midwest friday night into saturday.



lsz267-190900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm est sun jan 18 2026

...gale warning in effect from 4 am est monday through monday
afternoon...
...heavy freezing spray warning in effect from late tonight
through late tuesday night...

.late this afternoon...south winds 15 to 25 knots. snow showers
likely. waves 2 to 4 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then becoming north gales to 35 knots late.
snow showers. waves building to 7 to 10 feet occasionally to
13 feet. 
.monday...north gales to 40 knots becoming northwest gales to
35 knots by mid afternoon. heavy freezing spray. snow showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 8 to 11 feet occasionally to 14 feet. 
.monday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight. heavy freezing spray. snow showers
likely in the evening. a chance of snow showers after midnight.
waves subsiding to 6 to 9 feet occasionally to 11 feet. 
.tuesday...west winds 20 to 30 knots. heavy freezing spray. snow
showers likely. waves building to 6 to 10 feet occasionally to
13 feet. 
.tuesday night...west winds 20 to 30 knots backing southwest
after midnight. heavy freezing spray. a chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday...south winds 15 to 25 knots veering southwest in the
afternoon. a chance of snow showers. freezing spray in the
afternoon. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.wednesday night...west winds 20 to 30 knots becoming northwest
gales to 35 knots after midnight. heavy freezing spray. snow
showers likely in the evening. a chance of snow showers after
midnight. waves building to 7 to 10 feet occasionally to 13 feet.
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.friday...northwest winds 20 to 30 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202601190900;;119283

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 18 2026

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 deepening low of around 29.6 inches over lake superior will drop 
south into the eastern u.p by monday morning. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds weak ridging of 30.0 inches over much 
of lake superior on monday which strengthens to 30.1 inches by 
tuesday morning. a low of at least 29.8 inches then moves over lake 
superior on wednesday. as the low continues east on thursday, a weak 
remnant trough of 30.0 inches extends over the lake. after that, a 
30.8 inch high builds from the canadian prairies into the northern 
plains thursday night through friday. this high will build into the 
upper midwest friday night into saturday.



lsz162-190900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm est sun jan 18 2026 /301 pm cst sun jan 18 2026/

...heavy freezing spray warning in effect through monday
evening...
...gale warning in effect from 10 pm est /9 pm cst/ this evening
through monday morning...

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 182101
glfls 
expires:202601190900;;119284

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun jan 18 2026

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 deepening low of around 29.6 inches over lake superior will drop 
south into the eastern u.p by monday morning. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds weak ridging of 30.0 inches over much 
of lake superior on monday which strengthens to 30.1 inches by 
tuesday morning. a low of at least 29.8 inches then moves over lake 
superior on wednesday. as the low continues east on thursday, a weak 
remnant trough of 30.0 inches extends over the lake. after that, a 
30.8 inch high builds from the canadian prairies into the northern 
plains thursday night through friday. this high will build into the 
upper midwest friday night into saturday.



lsz263-190900-
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-
401 pm est sun jan 18 2026

...heavy freezing spray warning in effect through tuesday
evening...
...gale warning in effect from 10 pm est this evening through
monday morning...

.late this afternoon...west winds 15 to 25 knots. snow showers.
waves 3 to 5 feet occasionally to 7 feet. 
.tonight...north gales to 35 knots. heavy freezing spray. snow
showers. waves building to 8 to 11 feet occasionally to 14 feet. 
.monday...northwest gales to 35 knots diminishing to 20 to
30 knots. heavy freezing spray. snow showers likely. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.monday night...northwest winds 15 to 25 knots. a slight chance
of snow showers in the evening. heavy freezing spray. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots. a slight chance of snow
showers. waves 3 to 6 feet occasionally to 8 feet. 
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...west winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. heavy freezing spray. waves
building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 15 to 25 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots. 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.

$$