fzus63 kdtx 142038
glflh 
expires:202512150445;;586736

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm est sun dec 14 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...arctic air remains overhead today while strong high
pressure, 30.80 inches, drifts from the plains into the ohio
valley. the next cold front arrives late monday bringing a period
of elevated southwesterly winds but the high will quickly fill
back in behind it overnight.


lhz361-150445-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
338 pm est sun dec 14 2025

.tonight...northwest winds 10 to 15 knots becoming west 5 to
10 knots late in the evening...then increasing to 10 to 15 knots
after midnight becoming southwest 15 to 20 knots early in the
morning. a chance of snow showers. waves 3 to 5 feet subsiding to
1 to 3 feet in the late evening and early morning...then building
to 3 to 5 feet early in the morning. 
.monday...southwest winds 20 to 25 knots becoming west 15 to
20 knots in the afternoon. snow showers in the morning. waves
4 to 6 feet. 
.monday night...west winds 10 to 15 knots decreasing to 5 to
10 knots after midnight. waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. waves occasionally around 8 feet. 
.tuesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots early in the afternoon. waves 1 to 3 feet building to
3 to 5 feet in the late morning and afternoon. 
.tuesday night...south winds 15 to 20 knots becoming southwest
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. waves 6 to 9 feet. waves occasionally around
12 feet. 
.wednesday...west winds 20 to 25 knots with gusts to around
30 knots becoming northwest 10 to 15 knots late in the morning...
then becoming west 5 to 10 knots late in the afternoon becoming
south 20 to 25 knots late in the evening. a chance of rain late
in the evening. waves 6 to 9 feet subsiding to 2 to 4 feet late
in the afternoon...then building to 8 to 12 feet late in the
evening. waves occasionally around 15 feet. 
.thursday...south winds 20 to 25 knots with gusts to around
30 knots becoming southwest to 30 knots with gusts to 35 knot
gales early in the evening...then becoming west at 35 knot gales
in the late evening and early morning. rain. a chance of snow
until early morning. a chance of rain in the late evening and
early morning. freezing spray in the late evening and early
morning. waves 10 to 14 feet. waves occasionally around 18 feet.
a gale warning may be needed. 
.friday...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots until early evening...then
becoming south 15 to 20 knots in the late evening and early
morning. freezing spray early in the morning. a chance of until
early evening. a chance of snow showers in the late evening and
early morning. waves 10 to 14 feet subsiding to 6 to 9 feet in
the late morning and early afternoon...then subsiding to 2 to
4 feet early in the evening building to 5 to 7 feet in the late
evening and early morning. waves occasionally around 18 feet. 


$$

fzus63 kdtx 142038
glflh 
expires:202512150445;;586737

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm est sun dec 14 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...arctic air remains overhead today while strong high
pressure, 30.80 inches, drifts from the plains into the ohio
valley. the next cold front arrives late monday bringing a period
of elevated southwesterly winds but the high will quickly fill
back in behind it overnight.


lhz362-363-462-150445-
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-
338 pm est sun dec 14 2025

.tonight...west winds 15 to 20 knots. waves 6 to 9 feet subsiding
to 4 to 6 feet early in the morning. waves occasionally around
12 feet. 
.monday...southwest winds 20 to 25 knots increasing to 30 knots
in the late morning and early afternoon...then decreasing to
20 to 25 knots late in the afternoon. snow showers in the
morning...then a chance of snow showers in the afternoon.
freezing spray in the afternoon. waves 8 to 12 feet building to
10 to 14 feet in the afternoon. waves occasionally around
18 feet. 
.monday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots in the late evening and overnight. waves 6 to
9 feet subsiding to 3 to 5 feet in the late evening and
overnight. waves occasionally around 12 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 30 knots
with gusts to 35 knot gales. waves 2 to 4 feet building to 10 to
14 feet. waves occasionally around 18 feet. 
.tuesday night...south at 35 knot gales becoming southwest 20 to
25 knots. waves 12 to 16 feet. waves occasionally around 20 feet.
a gale warning may be needed. 
.wednesday...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots late in the morning...then
becoming south to 30 knots with gusts to 35 knot gales late in
the evening. waves 8 to 12 feet subsiding to 3 to 5 feet late in
the afternoon...then building to 10 to 14 feet late in the
evening. waves occasionally around 18 feet. 
.thursday...south at 35 knot gales becoming southwest at 40 knot
gales in the late evening and early morning. rain. a chance of
snow until early morning. freezing spray in the late evening and
early morning. waves 15 to 20 feet. waves occasionally around
25 feet. a gale warning may be needed. 
.friday...west at 35 knot gales with gusts to 40 knot gales
becoming northwest 15 to 20 knots with gusts to around 30 knots
until early evening...then becoming southwest 20 to 25 knots with
gusts to around 30 knots in the late evening and early morning.
freezing spray until afternoon. freezing spray in the late
evening and early morning. a chance of snow showers in the late
evening and early morning. waves 14 to 18 feet subsiding to 8 to
12 feet until early morning. waves occasionally around 23 feet. 


$$

fzus63 kmkx 142058 aaa
glflm 
expires:202512150415;;587216

open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
258 pm cst sun dec 14 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...

winds will continue to diminish this evening as high pressure of
30.7 inches builds from the northern plains into the ohio
valley this evening through tonight. high pressure exits to the
east into monday morning as low pressure of 29.9 inches sinks into
the northern plains. expect gusty southwest winds to develop late
tonight into monday afternoon between these systems. a gale
warning is in effect for this time frame.

a weak cold front shifts winds to westerly monday afternoon and
evening. low pressure around 29.2 inches then develops in southern
alberta and progresses eastward across southern canada, bringing
gusty southwest winds and gale potential to the northern half of
the lake tuesday afternoon and tuesday night. winds diminish and
become westerly, then northwesterly late tuesday night into
wednesday as low pressure exits. another system is expected on
thursday, bringing gusty southwest winds in the morning to
afternoon hours, and gusty northwest winds thursday night into
friday.


lmz261-362-364-366-563-565-567-868-150415-
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-
258 pm cst sun dec 14 2025

sheboygan wi to pentwater mi north...

...gale warning in effect from late tonight through monday
morning...

.tonight...west winds 10 to 20 kt becoming southwest gales to
35 kt. freezing spray overnight. chance of snow showers
overnight. waves 3 to 5 ft building to 6 to 9 ft occasionally to
12 ft. 
.monday...southwest gales to 40 kt becoming west to 30 kt late in
the morning, then diminishing to 15 to 25 kt early in the
afternoon diminishing to 10 to 20 kt late. freezing spray in the
morning. chance of snow showers in the morning. waves 8 to 11 ft
occasionally to 14 ft subsiding to 5 to 8 ft occasionally to
10 ft. 
.monday night...northwest winds 10 to 15 kt becoming southwest.
waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 2 ft. 
.tuesday...southwest winds to 30 kt increasing to gales to 40 kt
in the afternoon. waves 5 to 8 ft occasionally to 10 ft building
to 10 to 14 ft occasionally to 18 ft. 
.tuesday night...southwest gales to 40 kt becoming west gales to
35 kt. waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to
11 ft occasionally to 14 ft. 
.wednesday...northwest winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to
4 ft. 
.wednesday night...south gales to 35 kt increasing to gales to
40 kt. chance of rain. waves 8 to 11 ft occasionally to 14 ft
building to 14 to 18 ft occasionally to 23 ft. 
.thursday...south gales to 40 kt becoming southwest. rain with
snow likely. waves 14 to 18 ft occasionally to 23 ft subsiding to
12 to 16 ft occasionally to 21 ft. 
.friday...northwest winds 15 to 25 kt becoming west to 30 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 142058 aaa
glflm 
expires:202512150415;;587217

open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
258 pm cst sun dec 14 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...

winds will continue to diminish this evening as high pressure of
30.7 inches builds from the northern plains into the ohio
valley this evening through tonight. high pressure exits to the
east into monday morning as low pressure of 29.9 inches sinks into
the northern plains. expect gusty southwest winds to develop late
tonight into monday afternoon between these systems. a gale
warning is in effect for this time frame.

a weak cold front shifts winds to westerly monday afternoon and
evening. low pressure around 29.2 inches then develops in southern
alberta and progresses eastward across southern canada, bringing
gusty southwest winds and gale potential to the northern half of
the lake tuesday afternoon and tuesday night. winds diminish and
become westerly, then northwesterly late tuesday night into
wednesday as low pressure exits. another system is expected on
thursday, bringing gusty southwest winds in the morning to
afternoon hours, and gusty northwest winds thursday night into
friday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-150415-
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-
258 pm cst sun dec 14 2025

sheboygan wi to pentwater mi south...

...gale warning in effect from late tonight through monday
morning...

.tonight...west winds 10 to 15 kt becoming southwest 10 to 20 kt
late this evening, then increasing to 15 to 25 kt after midnight
increasing to 30 kt late. freezing spray overnight. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.monday...southwest gales to 35 kt becoming west 15 to 25 kt.
freezing spray in the morning. waves 8 to 12 ft occasionally to
16 ft subsiding to 6 to 9 ft occasionally to 12 ft. 
.monday night...west winds 10 to 20 kt diminishing to 10 to 15 kt
late in the evening, then diminishing to 5 to 10 kt after
midnight becoming southwest 10 to 15 kt late. waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft. 
.tuesday...southwest winds to 30 kt. waves 5 to 8 ft occasionally
to 10 ft building to 10 to 14 ft occasionally to 18 ft. 
.tuesday night...southwest winds to 30 kt becoming west. waves
10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft
occasionally to 14 ft. 
.wednesday...west winds 10 to 20 kt becoming southwest. waves
5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.wednesday night...south gales to 35 kt increasing to gales to
40 kt. chance of rain. waves 7 to 10 ft occasionally to 13 ft
building to 12 to 16 ft occasionally to 21 ft. 
.thursday...south gales to 40 kt becoming west. rain likely.
waves 12 to 16 ft occasionally to 21 ft. 
.friday...northwest winds to 30 kt becoming southwest. freezing
spray. waves 10 to 14 ft occasionally to 18 ft subsiding to 5 to
8 ft occasionally to 10 ft.  

$$

fzus63 kmqt 142101
glfls 
expires:202512150900;;587473

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 14 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.4 inch ridge of high pressure over lake superior this afternoon 
will be replaced by a 29.9 inch trough on monday as a 30.7 inch high 
over the ohio valley shifts to the southeastern conus. a weak 30.0 
inch ridge crosses the lake monday night, followed by a strong 29.2 
inch trough on tuesday as a 29.0 inch low crosses northern ontario. 
weak ridging of 29.8 inches returns on wednesday before a 29.1 inch 
clipper low traverses the lake wednesday night into thursday. 30.1 
inch high pressure then returns on friday.



lsz162-150900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sun dec 14 2025 /300 pm cst sun dec 14 2025/

...heavy freezing spray warning in effect until 4 am est /3 am
cst/ monday...
...gale warning in effect from 11 pm est /10 pm cst/ this evening
through monday morning...

.late this afternoon...southwest winds 20 to 30 knots. waves 2 to
4 feet building to 3 to 5 feet occasionally to 7 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 knots by midnight, then becoming west 20 to 30 knots late.
freezing spray. a chance of snow showers. waves building to 5 to
9 feet occasionally to 11 feet. 
.monday...west winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then diminishing to 5 to 15 knots by
mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots backing southwest
by midnight, then increasing to 15 to 25 knots late. waves
building to 2 to 4 feet. 
.tuesday...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 8 to 11 feet
occasionally to 14 feet. 
.tuesday night...west gales to 40 knots becoming northwest gales
to 35 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...west winds 10 to 20 knots backing south in the
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.wednesday night...south gales to 35 knots. a chance of rain
showers in the evening. a chance of snow showers. rain showers
likely after midnight. waves building to 5 to 8 feet occasionally
to 10 feet. 
.thursday...north storm force winds to 55 knots diminishing to
gales to 45 knots. heavy freezing spray. a chance of snow
showers. waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 1 to 3 feet. 
.friday...south winds 20 to 30 knots increasing to gales to
35 knots. a chance of snow showers. waves subsiding to calm to
2 feet, then building to 5 to 8 feet occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 142101
glfls 
expires:202512150900;;587474

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 14 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.4 inch ridge of high pressure over lake superior this afternoon 
will be replaced by a 29.9 inch trough on monday as a 30.7 inch high 
over the ohio valley shifts to the southeastern conus. a weak 30.0 
inch ridge crosses the lake monday night, followed by a strong 29.2 
inch trough on tuesday as a 29.0 inch low crosses northern ontario. 
weak ridging of 29.8 inches returns on wednesday before a 29.1 inch 
clipper low traverses the lake wednesday night into thursday. 30.1 
inch high pressure then returns on friday.



lsz263-150900-
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 pm est sun dec 14 2025

...gale warning in effect from 11 pm est this evening through
monday morning...

.late this afternoon...southwest winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 knots by midnight, then veering west late. freezing spray. a
chance of snow showers. waves building to 7 to 10 feet
occasionally to 13 feet. 
.monday...west winds 20 to 30 knots becoming northwest 10 to
20 knots by late morning, then diminishing to 5 to 15 knots by
mid afternoon. freezing spray in the morning. a slight chance of
snow showers in the morning. waves subsiding to 1 to 3 feet. 
.monday night...northwest winds 5 to 15 knots backing southwest
by midnight, then increasing to 15 to 25 knots late. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.tuesday...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet. 
.tuesday night...west gales to 40 knots veering northwest after
midnight. waves subsiding to 5 to 8 feet occasionally to 10 feet.
.wednesday...west winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.wednesday night...south gales to 35 knots. a chance of rain
showers in the evening. a chance of snow showers. rain showers
likely after midnight. waves building to 5 to 8 feet occasionally
to 10 feet. 
.thursday...north storm force winds to 55 knots. snow showers,
possibly mixed with rain. heavy freezing spray. waves building to
15 to 20 feet occasionally to 25 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.friday...south gales to 35 knots. a chance of snow showers.
freezing spray. waves subsiding to 1 to 3 feet, then building to
7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 142101
glfls 
expires:202512150900;;587475

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 14 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.4 inch ridge of high pressure over lake superior this afternoon 
will be replaced by a 29.9 inch trough on monday as a 30.7 inch high 
over the ohio valley shifts to the southeastern conus. a weak 30.0 
inch ridge crosses the lake monday night, followed by a strong 29.2 
inch trough on tuesday as a 29.0 inch low crosses northern ontario. 
weak ridging of 29.8 inches returns on wednesday before a 29.1 inch 
clipper low traverses the lake wednesday night into thursday. 30.1 
inch high pressure then returns on friday.



lsz264-150900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est sun dec 14 2025

...gale warning in effect from 11 pm est this evening through
monday morning...

.late this afternoon...west winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 knots by midnight. freezing spray. a chance of snow showers in
the evening. snow showers likely after midnight. waves building
to 7 to 10 feet occasionally to 13 feet. 
.monday...northwest winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray in the morning. a chance of snow showers
in the morning. waves subsiding to 2 to 4 feet. 
.monday night...northwest winds 5 to 15 knots backing southwest
by midnight, then increasing to 15 to 25 knots late. waves
subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.tuesday...south gales to 40 knots veering southwest in the
afternoon. a slight chance of drizzle, freezing drizzle, snow
showers and sleet in the morning. waves building to 11 to 15 feet
occasionally to 19 feet. 
.tuesday night...west gales to 45 knots veering northwest after
midnight. freezing spray after midnight. waves subsiding to 10 to
14 feet occasionally to 18 feet, then building to 11 to 15 feet
occasionally to 19 feet. 
.wednesday...northwest winds 20 to 30 knots becoming southwest
15 to 25 knots in the afternoon. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.wednesday night...south gales to 40 knots. a chance of rain and
snow showers in the evening, then rain and snow showers likely
after midnight. waves building to 10 to 14 feet occasionally to
18 feet. 
.thursday...north storm force winds to 60 knots. snow showers,
possibly mixed with rain. heavy freezing spray. waves subsiding
to 9 to 12 feet occasionally to 15 feet, then building to 20 to
25 feet occasionally to 31 feet. 
.friday...north gales to 35 knots becoming south gales to
40 knots. a chance of snow showers. freezing spray. waves
subsiding to 2 to 4 feet, then building to 9 to 12 feet
occasionally to 15 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 142101
glfls 
expires:202512150900;;587476

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 14 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.4 inch ridge of high pressure over lake superior this afternoon 
will be replaced by a 29.9 inch trough on monday as a 30.7 inch high 
over the ohio valley shifts to the southeastern conus. a weak 30.0 
inch ridge crosses the lake monday night, followed by a strong 29.2 
inch trough on tuesday as a 29.0 inch low crosses northern ontario. 
weak ridging of 29.8 inches returns on wednesday before a 29.1 inch 
clipper low traverses the lake wednesday night into thursday. 30.1 
inch high pressure then returns on friday.



lsz265-150900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est sun dec 14 2025

.late this afternoon...west winds 15 to 25 knots. waves 2 to
4 feet. 
.tonight...southwest winds 15 to 25 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible late. a chance
of snow showers. freezing spray after midnight. waves subsiding
to 1 to 3 feet, then building to 3 to 6 feet occasionally to
8 feet. 
.monday...west winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. freezing spray in the morning. a
chance of snow showers. waves subsiding to 2 to 4 feet. 
.monday night...northwest winds 10 to 20 knots backing southwest
late. waves subsiding to calm to 2 feet. 
.tuesday...south winds 20 to 30 knots becoming southwest gales to
40 knots in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.tuesday night...west gales to 45 knots veering northwest after
midnight. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest winds 20 to 30 knots becoming south 15 to
25 knots in the afternoon. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 
.wednesday night...south gales to 45 knots increasing to storm
force winds to 50 knots after midnight. a chance of rain showers
in the evening. a chance of snow showers. rain showers likely
after midnight. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 7 to 10 feet occasionally to 13 feet. 
.thursday...south storm force winds to 60 knots backing north.
snow showers, possibly mixed with rain. heavy freezing spray.
waves subsiding to 6 to 9 feet occasionally to 11 feet, then
building to 22 to 27 feet occasionally to 34 feet. 
.friday...northwest gales to 35 knots becoming south gales to
40 knots. a chance of snow showers, then snow showers likely.
freezing spray. waves subsiding to 3 to 5 feet occasionally to
7 feet, then building to 7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 142101
glfls 
expires:202512150900;;587477

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 14 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.4 inch ridge of high pressure over lake superior this afternoon 
will be replaced by a 29.9 inch trough on monday as a 30.7 inch high 
over the ohio valley shifts to the southeastern conus. a weak 30.0 
inch ridge crosses the lake monday night, followed by a strong 29.2 
inch trough on tuesday as a 29.0 inch low crosses northern ontario. 
weak ridging of 29.8 inches returns on wednesday before a 29.1 inch 
clipper low traverses the lake wednesday night into thursday. 30.1 
inch high pressure then returns on friday.



lsz266-150900-
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 pm est sun dec 14 2025

.late this afternoon...west winds 15 to 25 knots. a slight chance
of snow showers. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots becoming southwest 20 to
30 knots by midnight, then increasing to 30 knots with a few gale
force gusts to 35 knots possible late. a chance of snow showers.
freezing spray after midnight. waves subsiding to 2 to 4 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.monday...west winds 20 to 30 knots diminishing to 15 to 25 knots
by late morning, then veering northwest by mid afternoon.
freezing spray in the morning. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.monday night...northwest winds 10 to 20 knots backing southwest
late. a slight chance of snow showers in the evening. waves
subsiding to 1 to 3 feet. 
.tuesday...south gales to 40 knots. a slight chance of snow
showers in the morning. a slight chance of drizzle and freezing
drizzle. waves building to 8 to 12 feet occasionally to 15 feet. 
.tuesday night...southwest gales to 45 knots veering northwest
after midnight. a chance of snow showers after midnight. waves
building to 12 to 17 feet occasionally to 21 feet. 
.wednesday...northwest gales to 35 knots becoming southwest 20 to
30 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...south gales to 45 knots. a chance of rain
showers in the evening. a chance of snow showers. rain showers
likely after midnight. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 11 to 15 feet
occasionally to 19 feet. 
.thursday...south storm force winds to 60 knots backing north.
heavy freezing spray. snow showers, possibly mixed with rain. a
chance of snow showers. waves subsiding to 10 to 14 feet
occasionally to 18 feet, then building to 25 to 30 feet
occasionally to 38 feet. 
.friday...north gales to 40 knots becoming south gales to
45 knots. freezing spray. a chance of snow showers. snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 11 to 15 feet occasionally to 19 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 142101
glfls 
expires:202512150900;;587478

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun dec 14 2025

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...

a 30.4 inch ridge of high pressure over lake superior this afternoon 
will be replaced by a 29.9 inch trough on monday as a 30.7 inch high 
over the ohio valley shifts to the southeastern conus. a weak 30.0 
inch ridge crosses the lake monday night, followed by a strong 29.2 
inch trough on tuesday as a 29.0 inch low crosses northern ontario. 
weak ridging of 29.8 inches returns on wednesday before a 29.1 inch 
clipper low traverses the lake wednesday night into thursday. 30.1 
inch high pressure then returns on friday.



lsz267-150900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est sun dec 14 2025

.late this afternoon...northwest winds 15 to 25 knots. a chance
of snow showers. waves 3 to 6 feet occasionally to 8 feet. 
.tonight...west winds 15 to 25 knots becoming southwest 20 to
30 knots by midnight, then increasing to 30 knots with a few gale
force gusts to 35 knots possible late. a chance of snow showers.
freezing spray after midnight. waves subsiding to 2 to 4 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.monday...southwest winds to 30 knots with a few gale force gusts
to 35 knots possible becoming west 20 to 30 knots. freezing spray
in the morning. snow showers likely in the morning, then a chance
of snow showers in the afternoon. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.monday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots by midnight, then backing southwest late. a chance
of snow showers. waves subsiding to 1 to 3 feet. 
.tuesday...south gales to 40 knots. a chance of snow showers. a
slight chance of drizzle in the afternoon. waves building to 7 to
10 feet occasionally to 13 feet. 
.tuesday night...southwest gales to 40 knots becoming west gales
to 45 knots after midnight. a chance of drizzle. a chance of snow
showers and freezing drizzle after midnight. waves building to
12 to 17 feet occasionally to 21 feet. 
.wednesday...northwest gales to 35 knots becoming west 10 to
20 knots in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...south gales to 45 knots. a chance of rain
showers in the evening. a chance of snow showers. rain showers
likely after midnight. waves building to 8 to 12 feet
occasionally to 15 feet. 
.thursday...south storm force winds to 55 knots backing north.
rain and snow showers, then a chance of snow showers. heavy
freezing spray. waves subsiding to 7 to 10 feet occasionally to
13 feet, then building to 17 to 22 feet occasionally to 28 feet. 
.friday...north winds 20 to 30 knots becoming south gales to
40 knots. freezing spray. a chance of snow showers. snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet, then
building to 8 to 11 feet occasionally to 14 feet. 

note, wave height forecasts are for ice free areas.

$$