fzus63 kdtx 140218
glflh 
expires:202512141030;;542002

open lake forecast for lake huron
national weather service detroit/pontiac mi
918 pm est sat dec 13 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...an arctic cold front pushed east of the area this
morning. strong northwesterly flow follows for the rest of the
weekend with bitter cold air leading to snow squalls and freezing
spray over lake huron.


lhz361-141030-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
918 pm est sat dec 13 2025

.rest of tonight...west winds 20 to 25 knots becoming northwest
15 to 20 knots after midnight. a chance of snow. freezing spray.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.sunday...northwest winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.sunday night...northwest winds 10 to 15 knots becoming southwest
15 to 20 knots after midnight. a chance of snow after midnight.
waves 3 to 5 feet subsiding to 2 to 4 feet in the late evening
and early morning...then building to 3 to 5 feet after midnight. 
.monday...southwest winds 20 to 25 knots with gusts to around
30 knots becoming west 15 to 20 knots early in the afternoon. a
chance of snow. waves 5 to 7 feet. waves occasionally around
10 feet. 
.monday night...west winds 15 to 20 knots decreasing to 5 to
10 knots. waves 4 to 6 feet subsiding to 1 to 3 feet after
midnight. waves occasionally around 8 feet. 
.tuesday...southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to around 30 knots. waves 1 to 3 feet
building to 6 to 9 feet. waves occasionally around 12 feet. 
.wednesday...west winds 20 to 25 knots with gusts to around
30 knots decreasing to 10 to 15 knots in the late morning and
early afternoon...then decreasing to 5 to 10 knots early in the
evening becoming south 15 to 20 knots in the late evening and
early morning. a chance of rain in the late evening and early
morning. waves 6 to 9 feet subsiding to 2 to 4 feet early in the
evening...then building to 6 to 9 feet in the late evening and
early morning. waves occasionally around 12 feet. 
.thursday...south winds 20 to 25 knots becoming southwest at
35 knot gales until early morning. rain until afternoon...then
rain likely early in the evening. a chance of snow until early
morning. freezing spray in the late evening and early morning.
waves 12 to 16 feet. waves occasionally around 20 feet. a gale
warning may be needed. 


$$

fzus63 kdtx 140218
glflh 
expires:202512141030;;542003

open lake forecast for lake huron
national weather service detroit/pontiac mi
918 pm est sat dec 13 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...an arctic cold front pushed east of the area this
morning. strong northwesterly flow follows for the rest of the
weekend with bitter cold air leading to snow squalls and freezing
spray over lake huron.


lhz362-363-462-141030-
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-
918 pm est sat dec 13 2025

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

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


$$

fzus63 kmkx 140255
glflm 
expires:202512141030;;542730

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cst sat dec 13 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...

brisk northwest winds and heavy freezing spray will continue
across all open waters through sunday morning as arctic high 
pressure around 30.8 inches slowly builds down through the 
northern plains into iowa and low pressure of 29.9 inches exits
through quebec.

winds will gradually ease sunday afternoon and evening as high 
pressure moves into the ohio valley. low pressure then enters the
hudson bay as high pressure exits, bringing brisk southwest winds
late sunday night into monday. a gale watch is in effect for this
time frame. a brief period of lighter winds develop monday night,
but low pressure around 29.2 inches develops and progresses
eastward across southern canada into tuesday, bringing an 
additional round of brisk southwest winds and gale potential,
especially across the northern half. winds diminish into wednesday
as low pressure exits, but become gusty and southwesterly again
thursday as an additional low pressure system progresses across
the northern plains.


lmz261-362-364-366-563-565-567-868-141030-
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-
855 pm cst sat dec 13 2025

sheboygan wi to pentwater mi north...

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

.rest of tonight...northwest winds to 30 kt. freezing spray.
chance of snow showers. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt diminishing to 10 to 20 kt.
freezing spray in the morning. chance of snow showers in the
morning. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.sunday night...west winds 10 to 20 kt becoming southwest late in
the evening, then increasing to 30 kt after midnight increasing
to gales to 40 kt late. freezing spray overnight. chance of snow
showers overnight. waves 2 to 4 ft building to 7 to 10 ft
occasionally to 13 ft. 
.monday...southwest gales to 40 kt becoming west 15 to 25 kt in
the afternoon. freezing spray in the morning. chance of snow in
the morning. waves 10 to 14 ft occasionally to 18 ft. 
.monday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.tuesday...southwest winds to 30 kt increasing to gales to 40 kt
in the afternoon. waves 4 to 6 ft occasionally to 8 ft building
to 8 to 11 ft occasionally to 14 ft. 
.tuesday night...southwest gales to 40 kt becoming west gales to
35 kt. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.wednesday...west winds 15 to 25 kt becoming southwest 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.thursday...south gales to 35 kt becoming southwest. rain likely
with a chance of snow. waves 8 to 12 ft occasionally to 16 ft.  

$$

fzus63 kmkx 140255
glflm 
expires:202512141030;;542731

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 pm cst sat dec 13 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...

brisk northwest winds and heavy freezing spray will continue
across all open waters through sunday morning as arctic high 
pressure around 30.8 inches slowly builds down through the 
northern plains into iowa and low pressure of 29.9 inches exits
through quebec.

winds will gradually ease sunday afternoon and evening as high 
pressure moves into the ohio valley. low pressure then enters the
hudson bay as high pressure exits, bringing brisk southwest winds
late sunday night into monday. a gale watch is in effect for this
time frame. a brief period of lighter winds develop monday night,
but low pressure around 29.2 inches develops and progresses
eastward across southern canada into tuesday, bringing an 
additional round of brisk southwest winds and gale potential,
especially across the northern half. winds diminish into wednesday
as low pressure exits, but become gusty and southwesterly again
thursday as an additional low pressure system progresses across
the northern plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-141030-
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-
855 pm cst sat dec 13 2025

sheboygan wi to pentwater mi south...

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

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

$$

fzus63 kmqt 140300
glfls 
expires:202512140900;;543041

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat dec 13 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...

ridging builds to 30.4 inches over lake superior tonight into sunday 
as 30.7 high pressure shifts east from the northern plains to the 
upper midwest. a 29.9 inch trough moves across the lake monday 
morning as the high settles over the southeastern u.s. a 30.0 inch 
ridge then crosses lake superior monday night, followed by a trough 
of at least 29.3 inches tuesday night as a 29.1 inch low crosses 
northern ontario. weak ridging of 29.9 inches returns over lake 
superior on wednesday before a 29.0 inch clipper low approaches on 
thursday.



lsz162-140900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est sat dec 13 2025 /900 pm cst sat dec 13 2025/

...heavy freezing spray warning in effect until 1 am est
/midnight cst/ sunday...

.rest of tonight...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. heavy freezing spray late in the evening.
isolated snow showers. waves 4 to 7 feet occasionally to 9 feet
subsiding to 2 to 4 feet. 
.sunday...northwest winds 10 to 20 knots backing west by late
morning, then becoming southwest 15 to 25 knots by mid afternoon.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 35 knots possible by
midnight, then veering west 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 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...northwest winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest gales to 35 knots. waves building to 7 to
11 feet occasionally to 14 feet. 
.tuesday night...west gales to 35 knots diminishing to 20 to
30 knots after midnight. waves subsiding to 2 to 4 feet. 
.wednesday...west winds 10 to 20 knots becoming south gales to
35 knots. rain and snow showers likely. waves subsiding to calm
to 2 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.thursday...west gales to 40 knots veering northwest. freezing
spray. a chance of snow showers, possibly mixed with rain. waves
building to 8 to 11 feet occasionally to 14 feet, then subsiding
to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 140300
glfls 
expires:202512140900;;543042

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat dec 13 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...

ridging builds to 30.4 inches over lake superior tonight into sunday 
as 30.7 high pressure shifts east from the northern plains to the 
upper midwest. a 29.9 inch trough moves across the lake monday 
morning as the high settles over the southeastern u.s. a 30.0 inch 
ridge then crosses lake superior monday night, followed by a trough 
of at least 29.3 inches tuesday night as a 29.1 inch low crosses 
northern ontario. weak ridging of 29.9 inches returns over lake 
superior on wednesday before a 29.0 inch clipper low approaches on 
thursday.



lsz263-140900-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 pm est sat dec 13 2025

...heavy freezing spray warning in effect until 7 am est sunday...

.rest of tonight...northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. heavy freezing spray. scattered snow
showers. waves 5 to 8 feet occasionally to 10 feet subsiding to
3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 10 to 20 knots backing west by late
morning, then becoming southwest 15 to 25 knots by mid afternoon.
isolated snow showers in the morning. waves subsiding to 2 to
4 feet. 
.sunday night...southwest winds 20 to 30 knots increasing to
30 knots with a few gale force gusts to 40 knots possible by
midnight. freezing spray. a chance of snow showers. waves
building to 8 to 11 feet occasionally to 14 feet. 
.monday...west gales to 35 knots becoming northwest 10 to
20 knots in the 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 becoming southwest
15 to 25 knots after midnight. waves subsiding to calm to 2 feet,
then building to 1 to 3 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. waves subsiding to 4 to
7 feet occasionally to 9 feet. 
.wednesday...west winds 10 to 20 knots becoming south gales to
35 knots. rain and snow showers likely. waves subsiding to calm
to 2 feet, then building to 7 to 10 feet occasionally to 13 feet.
.thursday...west gales to 45 knots veering northwest. freezing
spray. rain showers likely. a chance of snow showers. waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 140300
glfls 
expires:202512140900;;543043

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat dec 13 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...

ridging builds to 30.4 inches over lake superior tonight into sunday 
as 30.7 high pressure shifts east from the northern plains to the 
upper midwest. a 29.9 inch trough moves across the lake monday 
morning as the high settles over the southeastern u.s. a 30.0 inch 
ridge then crosses lake superior monday night, followed by a trough 
of at least 29.3 inches tuesday night as a 29.1 inch low crosses 
northern ontario. weak ridging of 29.9 inches returns over lake 
superior on wednesday before a 29.0 inch clipper low approaches on 
thursday.



lsz264-140900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est sat dec 13 2025

...gale warning in effect until 7 am est sunday...
...heavy freezing spray warning in effect until 7 am est sunday...

.rest of tonight...northwest gales to 35 knots diminishing to
20 to 30 knots late. heavy freezing spray. scattered snow
showers. waves 8 to 11 feet occasionally to 14 feet subsiding to
7 to 10 feet occasionally to 13 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots by late morning, then backing west by mid afternoon.
freezing spray in the morning. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.sunday night...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 8 to 11 feet occasionally to 14 feet. 
.monday...northwest gales to 35 knots diminishing to 15 to
25 knots in the afternoon. freezing spray in the morning. a
slight chance of snow showers in the morning. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.monday night...northwest winds 10 to 20 knots backing southwest
after midnight. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.tuesday...south gales to 35 knots becoming southwest gales to
40 knots in the afternoon. 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 7 to 10 feet occasionally to
13 feet. 
.wednesday...west winds 20 to 30 knots becoming south gales to
40 knots. rain and snow showers likely. waves subsiding to 1 to
3 feet, then building to 10 to 14 feet occasionally to 18 feet. 
.thursday...south storm force winds to 55 knots veering
northwest. snow showers, possibly mixed with rain. heavy freezing
spray. waves building to 15 to 20 feet occasionally to 25 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 140300
glfls 
expires:202512140900;;543044

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat dec 13 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...

ridging builds to 30.4 inches over lake superior tonight into sunday 
as 30.7 high pressure shifts east from the northern plains to the 
upper midwest. a 29.9 inch trough moves across the lake monday 
morning as the high settles over the southeastern u.s. a 30.0 inch 
ridge then crosses lake superior monday night, followed by a trough 
of at least 29.3 inches tuesday night as a 29.1 inch low crosses 
northern ontario. weak ridging of 29.9 inches returns over lake 
superior on wednesday before a 29.0 inch clipper low approaches on 
thursday.



lsz265-140900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est sat dec 13 2025

...gale warning in effect until 7 am est sunday...
...heavy freezing spray warning in effect until 7 am est sunday...

.rest of tonight...northwest gales to 40 knots. freezing spray.
numerous snow showers late in the evening. scattered snow showers
after midnight. waves 7 to 10 feet occasionally to 13 feet
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 8 to 11 feet occasionally to 14 feet. 
.sunday...northwest winds 20 to 30 knots becoming west 15 to
25 knots by mid afternoon. freezing spray in the morning.
isolated snow showers in the morning. waves subsiding to 2 to
4 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
gales to 35 knots. a slight chance of snow showers in the
evening, then snow showers likely after midnight. waves subsiding
to 1 to 3 feet, then building to 3 to 6 feet occasionally to
8 feet. 
.monday...west gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. freezing spray in the morning. a
chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.monday night...northwest winds 10 to 20 knots backing southwest
after midnight. waves subsiding to calm to 2 feet. 
.tuesday...south winds 20 to 30 knots becoming southwest gales to
35 knots in the afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...west gales to 40 knots. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.wednesday...west winds 20 to 30 knots becoming south gales to
40 knots. rain and snow showers likely. waves subsiding to calm
to 2 feet, then building to 8 to 11 feet occasionally to 14 feet.
.thursday...south storm force winds to 55 knots veering
northwest. snow showers likely, then a chance of snow showers.
freezing spray. waves building to 12 to 17 feet occasionally to
21 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 140300
glfls 
expires:202512140900;;543045

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat dec 13 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...

ridging builds to 30.4 inches over lake superior tonight into sunday 
as 30.7 high pressure shifts east from the northern plains to the 
upper midwest. a 29.9 inch trough moves across the lake monday 
morning as the high settles over the southeastern u.s. a 30.0 inch 
ridge then crosses lake superior monday night, followed by a trough 
of at least 29.3 inches tuesday night as a 29.1 inch low crosses 
northern ontario. weak ridging of 29.9 inches returns over lake 
superior on wednesday before a 29.0 inch clipper low approaches on 
thursday.



lsz266-140900-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
1000 pm est sat dec 13 2025

...gale warning in effect until 7 am est sunday...
...heavy freezing spray warning in effect until 7 am est sunday...

.rest of tonight...northwest gales to 40 knots veering north
late. heavy freezing spray. snow showers. waves 10 to 14 feet
occasionally to 18 feet building to 11 to 15 feet occasionally to
19 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.
.sunday...north winds 20 to 30 knots becoming northwest 15 to
25 knots. freezing spray in the morning. scattered snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday night...southwest winds 15 to 25 knots increasing to
gales to 35 knots. a slight chance of snow showers in the
evening, then snow showers likely after midnight. freezing spray
after midnight. waves subsiding to 2 to 4 feet, then building to
7 to 10 feet occasionally to 13 feet. 
.monday...west gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. freezing spray in the morning. a
chance of snow showers. waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.monday night...northwest winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. a slight chance of snow showers in
the evening. waves subsiding to 1 to 3 feet. 
.tuesday...south gales to 40 knots. a chance of freezing drizzle.
a chance of drizzle in the afternoon. waves building to 9 to
12 feet occasionally to 15 feet. 
.tuesday night...southwest gales to 40 knots veering west after
midnight. a chance of drizzle. a chance of freezing drizzle and
snow showers after midnight. waves building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday...northwest winds 20 to 30 knots becoming south gales
to 45 knots. a chance of snow showers. rain showers likely. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
10 to 14 feet occasionally to 18 feet. 
.thursday...south storm force winds to 55 knots veering
northwest. snow showers, then a chance of snow showers. freezing
spray. waves building to 17 to 22 feet occasionally to 28 feet,
then subsiding to 10 to 14 feet occasionally to 18 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 140300
glfls 
expires:202512140900;;543046

open lake forecast for lake superior
national weather service marquette mi
1000 pm est sat dec 13 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...

ridging builds to 30.4 inches over lake superior tonight into sunday 
as 30.7 high pressure shifts east from the northern plains to the 
upper midwest. a 29.9 inch trough moves across the lake monday 
morning as the high settles over the southeastern u.s. a 30.0 inch 
ridge then crosses lake superior monday night, followed by a trough 
of at least 29.3 inches tuesday night as a 29.1 inch low crosses 
northern ontario. weak ridging of 29.9 inches returns over lake 
superior on wednesday before a 29.0 inch clipper low approaches on 
thursday.



lsz267-140900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est sat dec 13 2025

...gale warning in effect until 7 am est sunday...
...heavy freezing spray warning in effect until 7 am est sunday...

.rest of tonight...north gales to 35 knots. freezing spray.
numerous snow showers. waves 10 to 14 feet occasionally to
18 feet subsiding to 9 to 12 feet occasionally to 15 feet. 
.sunday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. freezing spray in the morning.
isolated snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...west winds 10 to 20 knots becoming southwest
20 to 30 knots by midnight, then increasing to gales to 35 knots
late. a chance of snow showers in the evening, then snow showers
after midnight. freezing spray after midnight. waves subsiding to
2 to 4 feet, then building to 7 to 10 feet occasionally to
13 feet. 
.monday...southwest gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. freezing spray in the morning. snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.monday night...northwest winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. a slight chance of snow showers in
the evening. waves subsiding to 1 to 3 feet. 
.tuesday...south winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet. 
.tuesday night...southwest gales to 40 knots veering west after
midnight. a chance of drizzle. a chance of freezing drizzle and
snow showers after midnight. waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday...northwest winds 20 to 30 knots becoming south gales
to 40 knots. rain and snow showers likely. waves subsiding to
3 to 5 feet occasionally to 7 feet, then building to 7 to 10 feet
occasionally to 13 feet. 
.thursday...south gales to 45 knots veering northwest. rain and
snow showers, then a chance of snow showers. freezing spray.
waves building to 17 to 22 feet occasionally to 28 feet, then
subsiding to 10 to 14 feet occasionally to 18 feet. 

note, wave height forecasts are for ice free areas.

$$