fzus63 kdtx 170840
glflh 
expires:202601171700;;029551

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am 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...an active stretch continues through the weekend and
into next week with elevated winds/waves, additional snowfall,
and freezing spray as arctic air surges back in with a series of
lows and cold fronts.


lhz361-362-171700-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
340 am est sat jan 17 2026

.today...southwest winds 10 to 15 knots. a chance of snow
showers. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...west winds 15 to 20 knots decreasing to 10 to 15 knots
after midnight. a chance of snow showers in the evening. waves
4 to 6 feet. 
.sunday...west winds 10 to 15 knots backing to the southwest
early in the afternoon. waves 3 to 5 feet. waves occasionally
around 8 feet. 
.sunday night...southwest winds 15 to 20 knots increasing to
20 to 25 knots after midnight. a chance of snow showers in the
evening. freezing spray. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.monday...west winds 20 to 25 knots increasing to 30 knots late
in the morning...then decreasing to 20 to 25 knots late in the
evening. gusts to 35 knot gales. a chance of snow showers. heavy
freezing spray. waves 12 to 16 feet. waves occasionally around
20 feet. 
.tuesday...west winds 20 to 25 knots with gusts to around
30 knots becoming southwest 15 to 20 knots by midnight. heavy
freezing spray. waves 6 to 9 feet. waves occasionally around
12 feet. 
.wednesday...southwest winds 15 to 20 knots veering to the west. 
a chance of snow until afternoon. waves 4 to 6 feet. waves 
occasionally around 8 feet. 


$$

fzus63 kdtx 170840
glflh 
expires:202601171700;;029552

open lake forecast for lake huron
national weather service detroit/pontiac mi
340 am 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...an active stretch continues through the weekend and
into next week with elevated winds/waves, additional snowfall,
and freezing spray as arctic air surges back in with a series of
lows and cold fronts.


lhz363-462>464-171700-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
340 am est sat jan 17 2026

.today...southwest winds 15 to 20 knots. waves 4 to 6 feet. 
.tonight...southwest winds 20 to 25 knots decreasing to 15 to
20 knots after midnight. a chance of snow showers. waves 5 to
7 feet. waves occasionally around 10 feet. 
.sunday...southwest winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. waves 3 to 5 feet. 
.sunday night...southwest winds 20 to 25 knots. a chance of snow
showers. freezing spray. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.monday...west winds to 30 knots decreasing to 20 to 25 knots
late in the evening. gusts to 35 knot gales. a chance of snow
showers. heavy freezing spray. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.tuesday...southwest winds 20 to 25 knots. gusts to 30 knots.
heavy freezing spray. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.wednesday...southwest winds 15 to 20 knots veering to the west. 
a chance of snow until afternoon. waves 3 to 5 feet. 


$$

fzus63 kmkx 170929
glflm 
expires:202601171630;;033212

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
329 am 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 29.3 inches will move into eastern ontario
today. gusty west winds are expected over southern portions of the
lake, with lighter winds to the north. winds should become more 
northwest tonight, as a cold front shifts southeast across the 
lake.

another low pressure system around 29.7 inches will track from 
northwest minnesota into lake superior sunday afternoon and 
evening. winds will turn to southwest to west and increase ahead 
of this system. a few gusts may approach gale force sunday 
afternoon and evening. 

a cold front will move across the lake late sunday evening, 
causing winds to become west to northwest and strengthen. high
pressure around 30.5 inches will move into the central plains
monday, helping sustain the strong winds. 

gales are likely later sunday night into monday, with a gale 
watch in effect for all of lake michigan. building waves and cold 
air moving into the region will bring a period of freezing spray 
sunday night into tuesday. some heavy freezing spray is possible 
during this period.

winds will weaken and shift west to southwest monday night into
tuesday night, ahead of another low pressure system around 29.9 
inches shifting from alberta towards the great lakes.


lmz080-669-671-673-675-777-779-870-872-874-876-878-171630-
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-
329 am cst sat jan 17 2026

sheboygan wi to pentwater mi south...

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

.today...west winds 15 to 25 kt. freezing spray this morning.
snow. waves 5 to 8 ft occasionally to 10 ft. 
.tonight...west winds 15 to 25 kt. snow in the evening, then
chance of snow overnight. freezing spray overnight. waves 5 to
8 ft occasionally to 10 ft. 
.sunday...west winds 15 to 25 kt becoming southwest to 30 kt.
freezing spray. chance of snow in the morning, then snow in the
afternoon. waves 7 to 10 ft occasionally to 13 ft. 
.sunday night...west winds to 30 kt becoming northwest gales to
40 kt overnight. freezing spray in the evening, then heavy
freezing spray overnight. snow in the evening, then chance of
snow overnight. waves 8 to 11 ft occasionally to 14 ft building
to 12 to 16 ft occasionally to 21 ft. 
.monday...northwest gales to 40 kt becoming west. heavy freezing
spray. chance of snow. waves 12 to 16 ft occasionally to 21 ft. 
.monday night...west gales to 35 kt diminishing to 30 kt. heavy
freezing spray. waves 10 to 14 ft occasionally to 18 ft. 
.tuesday...west winds to 30 kt becoming southwest. heavy freezing
spray. chance of snow. waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.wednesday...west winds to 30 kt diminishing to 15 to 25 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 170929
glflm 
expires:202601171630;;033211

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
329 am 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 29.3 inches will move into eastern ontario
today. gusty west winds are expected over southern portions of the
lake, with lighter winds to the north. winds should become more 
northwest tonight, as a cold front shifts southeast across the 
lake.

another low pressure system around 29.7 inches will track from 
northwest minnesota into lake superior sunday afternoon and 
evening. winds will turn to southwest to west and increase ahead 
of this system. a few gusts may approach gale force sunday 
afternoon and evening. 

a cold front will move across the lake late sunday evening, 
causing winds to become west to northwest and strengthen. high
pressure around 30.5 inches will move into the central plains
monday, helping sustain the strong winds. 

gales are likely later sunday night into monday, with a gale 
watch in effect for all of lake michigan. building waves and cold 
air moving into the region will bring a period of freezing spray 
sunday night into tuesday. some heavy freezing spray is possible 
during this period.

winds will weaken and shift west to southwest monday night into
tuesday night, ahead of another low pressure system around 29.9 
inches shifting from alberta towards the great lakes.


lmz261-362-364-366-563-565-567-868-171630-
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-
329 am cst sat jan 17 2026

sheboygan wi to pentwater mi north...

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

.today...northwest winds 10 to 20 kt. chance of snow. waves 3 to
5 ft. 
.tonight...northwest winds 10 to 20 kt becoming west. slight
chance of snow. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...west winds 10 to 20 kt becoming southwest 15 to 25 kt.
chance of snow in the morning, then snow likely in the afternoon.
freezing spray in the afternoon. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft. 
.sunday night...west winds to 30 kt becoming northwest gales to
40 kt overnight. freezing spray in the evening, then heavy
freezing spray overnight. snow likely in the evening, then chance
of snow overnight. waves 6 to 9 ft occasionally to 12 ft building
to 10 to 14 ft occasionally to 18 ft. 
.monday...northwest gales to 40 kt. heavy freezing spray. chance
of snow. waves 10 to 14 ft occasionally to 18 ft. 
.monday night...west winds to 30 kt. heavy freezing spray. waves
8 to 11 ft occasionally to 14 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.tuesday...west winds to 30 kt. heavy freezing spray. waves 6 to
9 ft occasionally to 12 ft subsiding 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 6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 170901
glfls 
expires:202601172100;;030378

open lake forecast for lake superior
national weather service marquette mi
400 am 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 29.6 inch low over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 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.



lsz264-172100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est sat jan 17 2026

...heavy freezing spray warning in effect through late tonight...
...gale watch in effect from sunday evening through monday
afternoon...

.early this morning...northeast winds 20 to 30 knots. freezing
spray. snow showers. waves 3 to 6 feet occasionally to 8 feet
building to 4 to 7 feet occasionally to 9 feet. 
.today...north winds 20 to 30 knots. freezing spray. snow showers
likely in the morning. a chance of snow showers in the afternoon.
waves building to 4 to 8 feet occasionally to 10 feet. 
.tonight...north winds 15 to 25 knots diminishing to 5 to
15 knots by midnight. freezing spray in the evening. a chance of
snow showers. waves subsiding to 1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by late morning, then veering west 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 2 to 4 feet. 
.sunday night...north gales to 40 knots. heavy freezing spray. a
chance of snow showers. waves building to 11 to 15 feet
occasionally to 19 feet. 
.monday...northwest gales to 40 knots diminishing to 20 to
30 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.monday night...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. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 170901
glfls 
expires:202601172100;;030379

open lake forecast for lake superior
national weather service marquette mi
400 am 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 29.6 inch low over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 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.



lsz265-172100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est sat jan 17 2026

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

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 170901
glfls 
expires:202601172100;;030380

open lake forecast for lake superior
national weather service marquette mi
400 am 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 29.6 inch low over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 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.



lsz266-172100-
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 sat jan 17 2026

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

.early this morning...northeast winds 15 to 25 knots. a chance of
snow showers. waves 3 to 5 feet occasionally to 7 feet. 
.today...north winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then backing northwest late. freezing spray
in the evening. snow showers likely in the evening, then a chance
of snow showers after midnight. waves subsiding to 2 to 4 feet. 
.sunday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by late morning, then increasing to 15 to 25 knots by
mid afternoon. a chance of snow showers. waves subsiding to 1 to
3 feet. 
.sunday night...west gales to 35 knots becoming north gales to
40 knots after 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. waves building to 15 to 20 feet occasionally to 25 feet,
then subsiding to 10 to 14 feet occasionally to 18 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 7 to 10 feet
occasionally to 13 feet. 
.tuesday...west winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 15 to 25 knots increasing to 20 to
30 knots. a chance of snow showers. heavy freezing spray. waves
subsiding to 2 to 4 feet, then building to 5 to 8 feet
occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 170901
glfls 
expires:202601172100;;030381

open lake forecast for lake superior
national weather service marquette mi
400 am 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 29.6 inch low over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 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.



lsz267-172100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est sat jan 17 2026

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

.early this morning...northeast winds 10 to 20 knots. a chance of
snow showers. waves calm to 2 feet. 
.today...north winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of snow showers. waves building to
3 to 5 feet occasionally to 7 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then veering northeast late. a chance of
snow showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 1 to 3 feet. 
.sunday...east winds 10 to 20 knots veering south. snow showers
likely. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.sunday night...southwest winds 15 to 25 knots becoming northwest
gales to 35 knots after midnight. heavy freezing spray. snow
showers. waves building to 8 to 11 feet occasionally to 14 feet. 
.monday...north gales to 35 knots backing northwest in the
afternoon. heavy freezing spray. snow showers. waves building to
10 to 14 feet occasionally to 18 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 7 to 10 feet
occasionally to 13 feet. 
.tuesday...west winds 20 to 30 knots becoming southwest 15 to
25 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest winds 15 to 25 knots. a chance of snow
showers. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 5 to 8 feet occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 170901
glfls 
expires:202601172100;;030376

open lake forecast for lake superior
national weather service marquette mi
400 am 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 29.6 inch low over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 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.



lsz162-172100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est sat jan 17 2026 /300 am cst sat jan 17 2026/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 170901
glfls 
expires:202601172100;;030377

open lake forecast for lake superior
national weather service marquette mi
400 am 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 29.6 inch low over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 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.



lsz263-172100-
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 sat jan 17 2026

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

.early this morning...north winds 20 to 30 knots. freezing spray.
snow showers likely. waves 3 to 6 feet occasionally to 8 feet
building to 4 to 7 feet occasionally to 9 feet. 
.today...north winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. freezing spray. a chance of snow showers. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.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 subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 15 to
25 knots by mid afternoon. snow showers likely. freezing spray in
the afternoon. waves 2 to 4 feet. 
.sunday night...north gales to 35 knots. 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 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 becoming west
15 to 25 knots after midnight. heavy freezing spray. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$