fzus63 kdtx 060847
glflh 
expires:202512061700;;092874

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 am est sat dec 6 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...a cold front will track through the central great 
lakes, washing out in the process. short lived high pressure 
returns this evening. another low pressure system, 29.90 inches, 
tracks across the southern great lakes sunday morning bringing 
light snow to the area. brief strong northwest winds will follow 
for late sunday over lake huron.


lhz361-362-061700-
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-
347 am est sat dec 6 2025

.today...west winds 15 to 20 knots veering to the northwest late
in the afternoon. a chance of snow in the morning. waves 5 to
7 feet. waves occasionally around 10 feet. 
.tonight...northwest winds 10 to 15 knots decreasing to 5 to
10 knots late in the evening...then veering to the northwest 5 to
10 knots after midnight. a chance of snow after midnight. waves
3 to 5 feet subsiding to 1 to 3 feet early in the morning. 
.sunday...north winds 5 to 10 knots becoming northwest 15 to
20 knots. snow likely in the morning...then a chance of snow in
the afternoon. waves 1 to 3 feet building to 4 to 6 feet. waves
occasionally around 8 feet. 
.sunday night...northwest winds 20 to 25 knots becoming north
10 to 15 knots. waves 5 to 7 feet. waves occasionally around
10 feet. 
.monday...northwest winds 5 to 10 knots becoming west 10 to
15 knots late in the morning...then becoming south 15 to 20 knots
late in the afternoon becoming southwest 20 to 25 knots with
gusts to around 30 knots late in the evening. a chance of snow
late in the evening. waves 2 to 4 feet subsiding to 1 to 3 feet
late in the morning...then building to 4 to 6 feet late in the
afternoon building to 8 to 12 feet late in the evening. waves
occasionally around 15 feet. 
.tuesday...southwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots until early morning. snow
likely early in the morning...then a chance of snow until early
evening. snow likely in the late evening and early morning. waves
8 to 12 feet subsiding to 5 to 7 feet in the late evening and
early morning. waves occasionally around 15 feet. 
.wednesday...south winds 15 to 20 knots becoming north 20 to
25 knots with gusts to around 30 knots until early evening...then
becoming north 20 to 25 knots in the late evening and early
morning. rain likely early in the morning. snow likely until
afternoon. a chance of snow until early morning. waves 6 to
9 feet. waves occasionally around 12 feet. 


$$

fzus63 kdtx 060847
glflh 
expires:202512061700;;092875

open lake forecast for lake huron
national weather service detroit/pontiac mi
347 am est sat dec 6 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...a cold front will track through the central great 
lakes, washing out in the process. short lived high pressure 
returns this evening. another low pressure system, 29.90 inches, 
tracks across the southern great lakes sunday morning bringing 
light snow to the area. brief strong northwest winds will follow 
for late sunday over lake huron.


lhz363-462-061700-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
347 am est sat dec 6 2025

.today...west winds 15 to 20 knots. a chance of snow in the
morning. waves 5 to 7 feet. waves occasionally around 10 feet. 
.tonight...west winds 10 to 15 knots becoming northwest 5 to
10 knots after midnight. a chance of snow after midnight. waves
3 to 5 feet subsiding to 1 to 3 feet early in the morning. 
.sunday...northwest winds 5 to 10 knots increasing to 20 to
25 knots. a chance of snow. waves 1 to 3 feet building to 4 to
6 feet. waves occasionally around 8 feet. 
.sunday night...northwest winds 20 to 25 knots with gusts to
around 30 knots becoming north 15 to 20 knots after midnight.
waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...north winds 10 to 15 knots veering to the east late in
the morning...then becoming southwest 15 to 20 knots late in the
afternoon increasing to 30 knots late in the evening. a chance of
snow late in the evening. waves 4 to 6 feet subsiding to 3 to
5 feet late in the morning...then building to 8 to 12 feet late
in the evening. waves occasionally around 15 feet. 
.tuesday...southwest winds to 30 knots decreasing to 20 to
25 knots with gusts to around 30 knots until early morning. a
chance of snow. waves 6 to 9 feet. waves occasionally around
12 feet. 
.wednesday...south winds 20 to 25 knots becoming southwest to
30 knots in the late morning and early afternoon...then veering
to the northwest with gusts to 35 knot gales until early morning.
rain and snow until afternoon...then rain likely early in the
evening. a chance of snow until early morning. waves 8 to
12 feet. waves occasionally around 15 feet. 


$$

fzus63 kmkx 060901
glflm 
expires:202512061615;;093587

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cst sat dec 6 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...

breezy westerly winds this morning will gradually ease while 
veering to the northwest today, as high pressure of 30.0 inches
builds in from the west. breezy northerly winds are then 
expected later tonight into sunday as low pressure passes by to
the south and strong high pressure of 30.5 inches begins to 
build in from the west. more rounds of gusty winds are expected 
at times through at least the first half of next week, as 
multiple low pressure systems move through the region.


lmz261-362-364-366-563-565-567-868-061615-
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-
301 am cst sat dec 6 2025

sheboygan wi to pentwater mi north...

.today...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.tonight...northwest winds 10 to 15 kt becoming north 10 to
20 kt. chance of snow. waves 1 to 3 ft. 
.sunday...north winds 15 to 25 kt increasing to 30 kt. chance of
snow in the morning. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.sunday night...north winds 15 to 25 kt diminishing to 10 to
15 kt overnight. waves 4 to 6 ft occasionally to 8 ft subsiding
to 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt increasing to 30 kt in the
afternoon. chance of snow. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday night...southwest gales to 40 kt increasing to gales to
45 kt. chance of snow. waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft. 
.tuesday...west gales to 35 kt diminishing to 15 to 25 kt. chance
of snow. waves 8 to 12 ft occasionally to 16 ft subsiding to 6 to
9 ft occasionally to 12 ft. 
.wednesday...north gales to 35 kt. snow likely. waves 8 to 11 ft
occasionally to 14 ft.  

$$

fzus63 kmkx 060901
glflm 
expires:202512061615;;093588

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cst sat dec 6 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...

breezy westerly winds this morning will gradually ease while 
veering to the northwest today, as high pressure of 30.0 inches
builds in from the west. breezy northerly winds are then 
expected later tonight into sunday as low pressure passes by to
the south and strong high pressure of 30.5 inches begins to 
build in from the west. more rounds of gusty winds are expected 
at times through at least the first half of next week, as 
multiple low pressure systems move through the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-061615-
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-
301 am cst sat dec 6 2025

sheboygan wi to pentwater mi south...

.today...northwest winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds 5 to 10 kt becoming west late in the
evening, then backing to southeast 10 to 15 kt after midnight
becoming east 10 to 20 kt late. chance of snow in the evening,
then snow overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...northeast winds 10 to 20 kt becoming north 15 to 25 kt
late in the morning, then increasing to 30 kt early in the
afternoon diminishing to 15 to 25 kt late. chance of snow in the
morning. waves 3 to 5 ft building to 6 to 9 ft occasionally to
12 ft. 
.sunday night...north winds 15 to 25 kt becoming northeast 10 to
20 kt. chance of snow in the evening. waves 6 to 9 ft
occasionally to 12 ft. 
.monday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.monday night...southwest gales to 35 kt increasing to gales to
40 kt. chance of snow. waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt diminishing to 30 kt. chance
of snow and rain. waves 10 to 14 ft occasionally to 18 ft
subsiding to 8 to 12 ft occasionally to 16 ft. 
.wednesday...northwest gales to 40 kt increasing to gales to
45 kt. snow and rain likely. waves 12 to 16 ft occasionally to
21 ft.  

$$

fzus63 kmqt 060900
glfls 
expires:202512062100;;093542

open lake forecast for lake superior
national weather service marquette mi
400 am est sat dec 6 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...

this morning, a 29.5 inch trough is over the quebec/ontario line 
draped south from a 29.3 inch low over hudson bay. throughout the 
day, the trough will push fully into quebec while the parent low 
deepens to 29.2 inches. meanwhile, a 30.3 inch high develops over 
saskatchewan. through sunday, this high slides southeast to be over 
minnesota while building to 30.5 inches. monday, the high weakens to 
30.4 inches as it moves over the southern great lakes basin. monday 
afternoon, a 29.7 inch low will develop near north dakota, moving 
over lake superior tuesday morning. a second, stronger clipper low 
will form tuesday over the montana/canada border, absorbing the 
previous low tuesday night at 29.2 inches as it approaches lake 
michigan. the low will weaken slightly to 29.3 inches as it moves 
near the lower great lakes wednesday while 30.1 inch ridging settles 
over the plains. thursday, as the low quickly ejects past the st 
lawrence seaway, high pressure over the canadian rockies builds to 
30.8 inches.



lsz162-062100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est sat dec 6 2025 /300 am cst sat dec 6 2025/

.early this morning...northwest winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.tonight...northwest winds 10 to 20 knots veering north by
midnight. waves building to 1 to 3 feet. 
.sunday...north winds 10 to 20 knots backing northwest by late
morning, then diminishing to 5 to 15 knots by mid afternoon.
waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.monday...southwest winds 15 to 25 knots. a chance of snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.monday night...southwest winds 15 to 25 knots veering west after
midnight. snow showers. waves subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 to 20 knots becoming northeast
20 to 30 knots. a chance of snow showers, then snow showers
likely. waves subsiding to calm to 2 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.wednesday...north winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray. a chance of snow showers. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 060900
glfls 
expires:202512062100;;093543

open lake forecast for lake superior
national weather service marquette mi
400 am est sat dec 6 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...

this morning, a 29.5 inch trough is over the quebec/ontario line 
draped south from a 29.3 inch low over hudson bay. throughout the 
day, the trough will push fully into quebec while the parent low 
deepens to 29.2 inches. meanwhile, a 30.3 inch high develops over 
saskatchewan. through sunday, this high slides southeast to be over 
minnesota while building to 30.5 inches. monday, the high weakens to 
30.4 inches as it moves over the southern great lakes basin. monday 
afternoon, a 29.7 inch low will develop near north dakota, moving 
over lake superior tuesday morning. a second, stronger clipper low 
will form tuesday over the montana/canada border, absorbing the 
previous low tuesday night at 29.2 inches as it approaches lake 
michigan. the low will weaken slightly to 29.3 inches as it moves 
near the lower great lakes wednesday while 30.1 inch ridging settles 
over the plains. thursday, as the low quickly ejects past the st 
lawrence seaway, high pressure over the canadian rockies builds to 
30.8 inches.



lsz263-062100-
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 dec 6 2025

.early this morning...northwest winds 20 to 30 knots. freezing
spray. waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.today...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.tonight...northwest winds 5 to 15 knots increasing to 10 to
20 knots by midnight, then veering north late. a slight chance of
snow showers. waves building to 2 to 4 feet. 
.sunday...north winds 10 to 20 knots backing northwest. waves
subsiding to 1 to 3 feet. 
.sunday night...northwest winds 5 to 15 knots backing southwest
after midnight. waves subsiding to calm to 2 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a chance of snow showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.monday night...southwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. snow showers. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 10 to 20 knots becoming northeast
20 to 30 knots. a chance of snow showers. waves subsiding to calm
to 2 feet, then building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...north winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 060900
glfls 
expires:202512062100;;093544

open lake forecast for lake superior
national weather service marquette mi
400 am est sat dec 6 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...

this morning, a 29.5 inch trough is over the quebec/ontario line 
draped south from a 29.3 inch low over hudson bay. throughout the 
day, the trough will push fully into quebec while the parent low 
deepens to 29.2 inches. meanwhile, a 30.3 inch high develops over 
saskatchewan. through sunday, this high slides southeast to be over 
minnesota while building to 30.5 inches. monday, the high weakens to 
30.4 inches as it moves over the southern great lakes basin. monday 
afternoon, a 29.7 inch low will develop near north dakota, moving 
over lake superior tuesday morning. a second, stronger clipper low 
will form tuesday over the montana/canada border, absorbing the 
previous low tuesday night at 29.2 inches as it approaches lake 
michigan. the low will weaken slightly to 29.3 inches as it moves 
near the lower great lakes wednesday while 30.1 inch ridging settles 
over the plains. thursday, as the low quickly ejects past the st 
lawrence seaway, high pressure over the canadian rockies builds to 
30.8 inches.



lsz264-062100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am est sat dec 6 2025

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 060900
glfls 
expires:202512062100;;093545

open lake forecast for lake superior
national weather service marquette mi
400 am est sat dec 6 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...

this morning, a 29.5 inch trough is over the quebec/ontario line 
draped south from a 29.3 inch low over hudson bay. throughout the 
day, the trough will push fully into quebec while the parent low 
deepens to 29.2 inches. meanwhile, a 30.3 inch high develops over 
saskatchewan. through sunday, this high slides southeast to be over 
minnesota while building to 30.5 inches. monday, the high weakens to 
30.4 inches as it moves over the southern great lakes basin. monday 
afternoon, a 29.7 inch low will develop near north dakota, moving 
over lake superior tuesday morning. a second, stronger clipper low 
will form tuesday over the montana/canada border, absorbing the 
previous low tuesday night at 29.2 inches as it approaches lake 
michigan. the low will weaken slightly to 29.3 inches as it moves 
near the lower great lakes wednesday while 30.1 inch ridging settles 
over the plains. thursday, as the low quickly ejects past the st 
lawrence seaway, high pressure over the canadian rockies builds to 
30.8 inches.



lsz265-062100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am est sat dec 6 2025

.early this morning...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible. a slight chance of snow
showers. waves 4 to 8 feet occasionally to 10 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. freezing spray in the morning. a slight chance of snow
showers. waves subsiding to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of snow showers. waves subsiding to calm
to 2 feet, then building to 2 to 4 feet. 
.sunday...northwest winds 20 to 30 knots. a chance of snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday night...northwest winds 10 to 20 knots backing west after
midnight. a slight chance of snow showers in the evening. waves
subsiding to calm to 2 feet. 
.monday...southwest winds 10 to 20 knots increasing to 20 to
30 knots in the afternoon. waves building to 1 to 3 feet. 
.monday night...southwest winds 20 to 30 knots. snow showers.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots becoming northeast 20 to
30 knots. a chance of snow showers, then snow showers likely.
waves subsiding to calm to 2 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...north gales to 35 knots becoming northwest 20 to
30 knots. a chance of snow showers. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 060900
glfls 
expires:202512062100;;093546

open lake forecast for lake superior
national weather service marquette mi
400 am est sat dec 6 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...

this morning, a 29.5 inch trough is over the quebec/ontario line 
draped south from a 29.3 inch low over hudson bay. throughout the 
day, the trough will push fully into quebec while the parent low 
deepens to 29.2 inches. meanwhile, a 30.3 inch high develops over 
saskatchewan. through sunday, this high slides southeast to be over 
minnesota while building to 30.5 inches. monday, the high weakens to 
30.4 inches as it moves over the southern great lakes basin. monday 
afternoon, a 29.7 inch low will develop near north dakota, moving 
over lake superior tuesday morning. a second, stronger clipper low 
will form tuesday over the montana/canada border, absorbing the 
previous low tuesday night at 29.2 inches as it approaches lake 
michigan. the low will weaken slightly to 29.3 inches as it moves 
near the lower great lakes wednesday while 30.1 inch ridging settles 
over the plains. thursday, as the low quickly ejects past the st 
lawrence seaway, high pressure over the canadian rockies builds to 
30.8 inches.



lsz266-062100-
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 dec 6 2025

.early this morning...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible. freezing spray. a chance of
snow showers. waves 7 to 10 feet occasionally to 13 feet. 
.today...northwest winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 15 to 25 knots. freezing
spray in the morning. a chance of snow showers. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a chance of snow showers. waves subsiding
to 1 to 3 feet, then building to 3 to 5 feet occasionally to
7 feet. 
.sunday...northwest winds 20 to 30 knots. freezing spray. snow
showers. waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a chance of snow showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.monday night...southwest gales to 35 knots diminishing to 20 to
30 knots after midnight. snow showers. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tuesday...west winds 15 to 25 knots becoming northeast 20 to
30 knots. a chance of snow showers. waves subsiding to 2 to
4 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.wednesday...north gales to 35 knots diminishing to 20 to
30 knots. freezing spray. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 060900
glfls 
expires:202512062100;;093547

open lake forecast for lake superior
national weather service marquette mi
400 am est sat dec 6 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...

this morning, a 29.5 inch trough is over the quebec/ontario line 
draped south from a 29.3 inch low over hudson bay. throughout the 
day, the trough will push fully into quebec while the parent low 
deepens to 29.2 inches. meanwhile, a 30.3 inch high develops over 
saskatchewan. through sunday, this high slides southeast to be over 
minnesota while building to 30.5 inches. monday, the high weakens to 
30.4 inches as it moves over the southern great lakes basin. monday 
afternoon, a 29.7 inch low will develop near north dakota, moving 
over lake superior tuesday morning. a second, stronger clipper low 
will form tuesday over the montana/canada border, absorbing the 
previous low tuesday night at 29.2 inches as it approaches lake 
michigan. the low will weaken slightly to 29.3 inches as it moves 
near the lower great lakes wednesday while 30.1 inch ridging settles 
over the plains. thursday, as the low quickly ejects past the st 
lawrence seaway, high pressure over the canadian rockies builds to 
30.8 inches.



lsz267-062100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am est sat dec 6 2025

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

note, wave height forecasts are for ice free areas.

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