fzus63 kdtx 180253
glflh 
expires:202601181100;;074022

open lake forecast for lake huron
national weather service detroit/pontiac mi
953 pm est sat jan 17 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 watches are in effect for most waters monday.


lhz361-181100-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
953 pm est sat jan 17 2026

.rest of tonight...northwest winds 10 to 15 knots. a chance of
snow. waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. 
.sunday...west winds 5 to 10 knots backing to the southeast in
the afternoon. numerous snow showers. waves 1 to 3 feet. 
.sunday night...southwest winds 10 to 15 knots. numerous snow
showers. waves 1 to 3 feet building to 2 to 4 feet in the late
evening and overnight. 
.monday...west winds 15 to 20 knots becoming northwest 20 to
25 knots with gusts to around 30 knots in the late morning and
afternoon. numerous snow showers in the morning...then scattered
snow showers in the afternoon. heavy freezing spray. waves 5 to
7 feet building to 6 to 9 feet early in the afternoon. waves
occasionally around 12 feet. 
.monday night...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots after midnight. 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
late in the morning...then decreasing to 15 to 20 knots late in
the afternoon becoming southwest 10 to 15 knots late in the
evening. heavy freezing spray. waves 4 to 6 feet. 
.wednesday...south winds 10 to 15 knots becoming west 15 to
20 knots . a chance of snow. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday...west winds 15 to 20 knots. waves 4 to 6 feet. 


$$

fzus63 kdtx 180253
glflh 
expires:202601181100;;074023

open lake forecast for lake huron
national weather service detroit/pontiac mi
953 pm est sat jan 17 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 watches are in effect for most waters monday.


lhz362-363-462-181100-
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-
953 pm est sat jan 17 2026

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

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


$$

fzus63 kmkx 180305
glflm 
expires:202601181015;;074636

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
905 pm cst sat jan 17 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 around 29.7 inches will continue to move away across
southern quebec tonight with a trailing cold front moving across 
lake michigan. modest to brisk west to northwest winds are
expected. 

another low pressure system around 29.9 inches will track from 
northwest minnesota sunday morning to slowly across the northern 
great lakes through monday and deepen to 29.6 inches as it does
so. an arctic front will then move across the lake early monday
morning with northwest gales and heavy freezing spray possible. a 
gale watch is in effect for all of lake michigan from early monday
morning and through the day. a heavy freezing spray watch is in
effect from early monday morning through tuesday morning. westerly
winds will then gradually weaken monday night and tuesday.


lmz261-362-364-366-563-565-567-868-181015-
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-
905 pm cst sat jan 17 2026

sheboygan wi to pentwater mi north...

...gale watch in effect from late sunday night through monday
afternoon...
...heavy freezing spray watch in effect from late sunday night
through tuesday morning...

.rest of tonight...northwest winds 10 to 20 kt. chance of
flurries late this evening, then chance of snow overnight. waves
3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming southwest. chance of
snow in the morning, then snow in the afternoon. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday night...west winds 10 to 20 kt becoming northwest to
30 kt after midnight, then increasing to gales to 40 kt late.
snow in the evening, then snow likely overnight. heavy freezing
spray overnight. waves 4 to 6 ft occasionally to 8 ft building to
8 to 12 ft occasionally to 16 ft. 
.monday...northwest gales to 40 kt diminishing to gales to 35 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. 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...southwest winds 15 to 25 kt becoming west 10 to
20 kt. chance of snow. waves 4 to 7 ft occasionally to 9 ft. 
.wednesday...west winds 15 to 25 kt increasing to 30 kt. chance
of snow. waves 5 to 8 ft occasionally to 10 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.  

$$

fzus63 kmkx 180305
glflm 
expires:202601181015;;074637

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
905 pm cst sat jan 17 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 around 29.7 inches will continue to move away across
southern quebec tonight with a trailing cold front moving across 
lake michigan. modest to brisk west to northwest winds are
expected. 

another low pressure system around 29.9 inches will track from 
northwest minnesota sunday morning to slowly across the northern 
great lakes through monday and deepen to 29.6 inches as it does
so. an arctic front will then move across the lake early monday
morning with northwest gales and heavy freezing spray possible. a 
gale watch is in effect for all of lake michigan from early monday
morning and through the day. a heavy freezing spray watch is in
effect from early monday morning through tuesday morning. westerly
winds will then gradually weaken monday night and tuesday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-181015-
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-
905 pm cst sat jan 17 2026

sheboygan wi to pentwater mi south...

...gale watch in effect from late sunday night through monday
afternoon...
...heavy freezing spray watch in effect from late sunday night
through tuesday morning...

.rest of tonight...west winds 15 to 25 kt diminishing to 10 to
20 kt. snow likely late this evening, then chance of snow
overnight. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
freezing spray. chance of snow. waves 4 to 7 ft occasionally to
9 ft. 
.sunday night...southwest winds 15 to 25 kt becoming west to
30 kt late in the evening, then becoming northwest gales to 35 kt
after midnight increasing to gales to 40 kt late. freezing spray
in the evening, then heavy freezing spray overnight. snow in the
evening, then chance of snow overnight. waves 7 to 10 ft
occasionally to 13 ft building to 10 to 14 ft occasionally to
18 ft. 
.monday...northwest gales to 40 kt becoming west. heavy freezing
spray. chance of snow. waves 14 to 18 ft occasionally to 23 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 becoming southwest 15 to 25 kt.
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 15 to 25 kt increasing to 30 kt.
freezing spray. chance of snow. waves 6 to 9 ft occasionally to
12 ft. 
.wednesday...west winds to 30 kt. chance of snow. waves 7 to
10 ft occasionally to 13 ft. 
.thursday...west winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. chance of snow. waves 7 to 10 ft occasionally to
13 ft.  

$$

fzus63 kmqt 180301
glfls 
expires:202601180900;;074372

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat jan 17 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 29.9 inch ridge builds over lake superior tonight ahead of an 
approaching clipper low. the low moves over the lake on sunday, 
deepening to 29.6 inches by sunday night. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds ridging of 30.1 inches over much of 
lake superior on monday which weakens on tuesday. a low of at least 
29.9 inches then moves over lake superior on wednesday. as the low 
moves east on thursday a weak trough of 30.0 inches will extend over 
the lake off a 30.5 inch high building into the canadian prairies 
and northern plains.



lsz162-180900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est sat jan 17 2026 /900 pm cst sat jan 17 2026/

.rest of tonight...north winds 10 to 20 knots backing west late.
a chance of snow showers. waves 1 to 3 feet subsiding to calm to
2 feet. 
.sunday...southwest winds 10 to 20 knots veering west by late
morning, then becoming northwest 15 to 25 knots by mid afternoon.
a chance of snow showers in the morning, then snow showers in the
afternoon. waves building to 1 to 3 feet. 
.sunday night...north winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible by midnight,
then backing northwest late. heavy freezing spray. a slight
chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.monday...northwest winds 20 to 30 knots backing west in the
afternoon. heavy freezing spray in the morning. a slight chance
of snow showers. waves subsiding to 2 to 4 feet. 
.monday night...west winds 15 to 25 knots. waves subsiding to
1 to 3 feet. 
.tuesday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves building to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.wednesday...northwest winds 15 to 25 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots veering northwest. waves
subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202601180900;;074373

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat jan 17 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 29.9 inch ridge builds over lake superior tonight ahead of an 
approaching clipper low. the low moves over the lake on sunday, 
deepening to 29.6 inches by sunday night. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds ridging of 30.1 inches over much of 
lake superior on monday which weakens on tuesday. a low of at least 
29.9 inches then moves over lake superior on wednesday. as the low 
moves east on thursday a weak trough of 30.0 inches will extend over 
the lake off a 30.5 inch high building into the canadian prairies 
and northern plains.



lsz263-180900-
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 sat jan 17 2026

...gale watch in effect from sunday evening through monday
morning...

.rest of tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then increasing to 10 to 20 knots late. a
chance of snow showers. waves 3 to 5 feet occasionally to 7 feet
subsiding to 1 to 3 feet. 
.sunday...southwest winds 10 to 20 knots veering west by mid
afternoon. a chance of snow showers in the morning, then snow
showers in the afternoon. waves building to 2 to 4 feet. 
.sunday night...north winds 20 to 30 knots increasing to gales to
35 knots by midnight. heavy freezing spray. a chance of snow
showers. waves building to 9 to 12 feet occasionally to 15 feet. 
.monday...northwest gales to 35 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.monday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. 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. heavy freezing spray in the
morning. 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...northwest winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 15 to 25 knots. waves subsiding to
2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202601180900;;074374

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat jan 17 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 29.9 inch ridge builds over lake superior tonight ahead of an 
approaching clipper low. the low moves over the lake on sunday, 
deepening to 29.6 inches by sunday night. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds ridging of 30.1 inches over much of 
lake superior on monday which weakens on tuesday. a low of at least 
29.9 inches then moves over lake superior on wednesday. as the low 
moves east on thursday a weak trough of 30.0 inches will extend over 
the lake off a 30.5 inch high building into the canadian prairies 
and northern plains.



lsz264-180900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est sat jan 17 2026

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

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

$$

fzus63 kmqt 180301
glfls 
expires:202601180900;;074375

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat jan 17 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 29.9 inch ridge builds over lake superior tonight ahead of an 
approaching clipper low. the low moves over the lake on sunday, 
deepening to 29.6 inches by sunday night. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds ridging of 30.1 inches over much of 
lake superior on monday which weakens on tuesday. a low of at least 
29.9 inches then moves over lake superior on wednesday. as the low 
moves east on thursday a weak trough of 30.0 inches will extend over 
the lake off a 30.5 inch high building into the canadian prairies 
and northern plains.



lsz265-180900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est sat jan 17 2026

...gale watch in effect from late sunday night through monday
afternoon...

.rest of tonight...northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight, then backing west late. a chance of
snow showers. waves 4 to 7 feet occasionally to 9 feet subsiding
to 2 to 4 feet. 
.sunday...west winds 10 to 20 knots. a chance of snow showers.
waves subsiding to calm to 2 feet. 
.sunday night...west winds 15 to 25 knots becoming north gales to
45 knots by midnight. heavy freezing spray. snow showers. 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 backing west after
midnight. 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. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tuesday night...southwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.wednesday...west winds 20 to 30 knots becoming northwest gales
to 35 knots. a chance of snow showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.thursday...west gales to 35 knots diminishing to 20 to 30 knots.
a chance of snow showers. waves subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 180301
glfls 
expires:202601180900;;074376

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat jan 17 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 29.9 inch ridge builds over lake superior tonight ahead of an 
approaching clipper low. the low moves over the lake on sunday, 
deepening to 29.6 inches by sunday night. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds ridging of 30.1 inches over much of 
lake superior on monday which weakens on tuesday. a low of at least 
29.9 inches then moves over lake superior on wednesday. as the low 
moves east on thursday a weak trough of 30.0 inches will extend over 
the lake off a 30.5 inch high building into the canadian prairies 
and northern plains.



lsz266-180900-
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 sat jan 17 2026

...gale watch in effect from late sunday night through monday
evening...

.rest of tonight...north winds 15 to 25 knots diminishing to
10 to 20 knots late. freezing spray late in the evening. snow
showers likely late in the evening, then a chance of snow showers
after midnight. waves 4 to 7 feet occasionally to 9 feet
subsiding to 2 to 4 feet. 
.sunday...west winds 10 to 20 knots backing southwest. a chance
of snow showers in the morning, then snow showers in the
afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...northwest winds 15 to 25 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 40 knots becoming northwest gales to
35 knots in the afternoon. heavy freezing spray. snow showers.
waves subsiding to 9 to 12 feet occasionally to 15 feet. 
.monday night...northwest gales to 35 knots. 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. a
chance of snow showers. waves 6 to 9 feet occasionally to
11 feet. 
.tuesday night...west winds 20 to 30 knots becoming southwest
15 to 25 knots after midnight. freezing spray in the evening. a
chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...west winds 20 to 30 knots becoming northwest gales
to 35 knots. a chance of snow showers. heavy freezing spray.
waves building to 6 to 9 feet occasionally to 11 feet. 
.thursday...northwest winds 20 to 30 knots backing west. 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 180301
glfls 
expires:202601180900;;074377

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat jan 17 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 29.9 inch ridge builds over lake superior tonight ahead of an 
approaching clipper low. the low moves over the lake on sunday, 
deepening to 29.6 inches by sunday night. the low then moves to 
quebec on monday while a high pressure of 30.6 inches drops south 
over the plains. this builds ridging of 30.1 inches over much of 
lake superior on monday which weakens on tuesday. a low of at least 
29.9 inches then moves over lake superior on wednesday. as the low 
moves east on thursday a weak trough of 30.0 inches will extend over 
the lake off a 30.5 inch high building into the canadian prairies 
and northern plains.



lsz267-180900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est sat jan 17 2026

...gale watch in effect from monday morning through monday
afternoon...

.rest of tonight...north winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. a chance of snow showers. waves 3 to
5 feet occasionally to 7 feet subsiding to 1 to 3 feet. 
.sunday...east winds 10 to 20 knots becoming south 15 to 25 knots
by late morning, then diminishing to 10 to 20 knots by mid
afternoon. a chance of snow showers in the morning, then snow
showers likely in the afternoon. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.sunday night...south winds 10 to 20 knots becoming northwest
15 to 25 knots by midnight, then becoming north 20 to 30 knots
late. snow showers. heavy freezing spray after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday...north gales to 35 knots backing northwest in the
afternoon. heavy freezing spray. snow showers likely. waves
building to 8 to 11 feet occasionally to 14 feet. 
.monday night...northwest winds 20 to 30 knots. 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 increasing to gales to
35 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves building to 6 to 10 feet occasionally to 13 feet. 
.tuesday night...southwest winds 20 to 30 knots. heavy freezing
spray. a chance of snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...west winds 15 to 25 knots becoming northwest 20 to
30 knots. snow showers likely, then a chance of snow showers.
heavy freezing spray. waves subsiding to 3 to 5 feet occasionally
to 7 feet, then building to 6 to 9 feet occasionally to 11 feet. 
.thursday...northwest winds 20 to 30 knots backing west. 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.

$$