fzus63 kdtx 232018
glflh 
expires:202512240430;;100018

open lake forecast for lake huron
national weather service detroit/pontiac mi
318 pm est tue dec 23 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...low pressure, 29.80 inches, to travel from east
ontario into western quebec this afternoon. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron,
bringing gust to gales. high pressure, 30.40 inches, then quickly
fills in across the great lakes early tomorrow morning.


lhz361-362-240430-
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-
318 pm est tue dec 23 2025

...gale warning in effect until midnight est tonight...

.tonight...west winds to 30 knots with gusts to 35 knot gales
becoming northwest at 35 knot gales late in the evening...then
decreasing to 30 knots with gusts to 35 knot gales after midnight
becoming north 15 to 20 knots early in the morning. waves 10 to
14 feet. waves occasionally around 18 feet. 
.wednesday...north winds 5 to 10 knots veering to the southeast
early in the afternoon...then becoming south 10 to 15 knots late
in the afternoon. waves 5 to 7 feet subsiding to 1 to 3 feet.
waves occasionally around 10 feet. 
.wednesday night...south winds 10 to 15 knots veering to the west
after midnight. waves 2 to 4 feet. 
.thursday...north winds 15 to 20 knots becoming northeast 10 to
15 knots early in the afternoon. waves 2 to 4 feet. 
.thursday night...northeast winds 15 to 20 knots veering to the
east by midnight...then increasing to 20 to 25 knots with gusts
to around 30 knots after midnight. a chance of snow after
midnight. waves 4 to 6 feet building to 6 to 9 feet after
midnight. waves occasionally around 12 feet. 
.friday...southeast winds 20 to 25 knots with gusts to around
30 knots becoming east 10 to 15 knots. snow. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.saturday...east winds 10 to 15 knots becoming southeast 15 to
20 knots . a chance of rain . waves 3 to 5 feet. 
.sunday...south winds 15 to 20 knots becoming west 20 to 25 knots
with gusts to around 30 knots in the late morning and early
afternoon...then increasing to 35 knot gales with gusts to
40 knot gales . a chance of rain and snow until afternoon...then
a chance of snow . waves 5 to 7 feet building to 12 to 16 feet.
waves occasionally around 20 feet. a gale warning may be needed. 


$$

fzus63 kdtx 232018
glflh 
expires:202512240430;;100019

open lake forecast for lake huron
national weather service detroit/pontiac mi
318 pm est tue dec 23 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...low pressure, 29.80 inches, to travel from east
ontario into western quebec this afternoon. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron,
bringing gust to gales. high pressure, 30.40 inches, then quickly
fills in across the great lakes early tomorrow morning.


lhz363-462-240430-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
318 pm est tue dec 23 2025

.tonight...northwest winds 20 to 25 knots with gusts to around
30 knots decreasing to 15 to 20 knots early in the morning. waves
6 to 9 feet building to 10 to 14 feet in the late evening and
overnight. waves occasionally around 18 feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots late in the morning...then veering to the northeast
early in the afternoon veering to the south late in the
afternoon. waves 5 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 10 feet. 
.wednesday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.thursday...north winds 15 to 20 knots. waves 2 to 4 feet. 
.thursday night...northeast winds 15 to 20 knots veering to the
east after midnight. waves 4 to 6 feet. 
.friday...southeast winds 20 to 25 knots becoming east 5 to
10 knots. a chance of snow in the morning...then rain late in the
morning. snow late in the morning. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.saturday...east winds 5 to 10 knots becoming southeast 10 to
15 knots until early evening...then increasing to 15 to 20 knots
by midnight. a chance of rain . waves 2 to 4 feet building to
3 to 5 feet . 
.sunday...south winds 15 to 20 knots becoming west 20 to 25 knots
with gusts to around 30 knots in the late morning and early
afternoon...then increasing to 35 knot gales with gusts to
40 knot gales . a chance of rain. a chance of snow. waves 5 to
7 feet building to 12 to 16 feet. waves occasionally around
20 feet. a gale warning may be needed. 


$$

fzus63 kmkx 232039
glflm 
expires:202512240415;;100747

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
239 pm cst tue dec 23 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...

northwest winds this afternoon with turn more easterly tonight
and southeasterly into wednesday, as high pressure around 30.4 
inches swings through tonight. winds turn back northerly later
wednesday night as another high pressure system around 30.5
inches swings through south central canada. winds swing back 
easterly as the high pushes east through christmas day.
southeast winds expected thursday night/friday with a weak low
pressure system around 29.7 inches passes likely south of the
lake friday. light and variable winds behind the system.

the next best chance for gales is early next week sunday through
monday with increasing chances, with high higher end gales
possible as well. this will be a result of a weak low passing
through with strong high pressure impinging from the west
causing a strong pressure gradient and thus strong northwest
winds.


lmz261-362-364-366-563-565-567-868-240415-
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-
239 pm cst tue dec 23 2025

sheboygan wi to pentwater mi north...

.tonight...northwest winds to 30 kt becoming north 15 to 25 kt
late this evening, then diminishing to 10 to 20 kt after midnight
diminishing to 5 to 10 kt late. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft. 
.wednesday...east winds 5 to 10 kt becoming south 10 to 20 kt
from late morning on. chance of light freezing rain and snow in
the morning, then chance of snow in the afternoon. waves 2 to
4 ft. 
.wednesday night...south winds 10 to 20 kt veering to north.
chance of rain in the evening. waves 2 to 4 ft. 
.thursday...northeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday night...southeast winds to 30 kt. chance of snow, rain
and light freezing rain overnight. waves 4 to 7 ft occasionally
to 9 ft building to 6 to 9 ft occasionally to 12 ft. 
.friday...southeast winds to 30 kt diminishing to 15 to 25 kt.
rain, snow and light freezing rain likely in the morning, then
chance of rain and snow in the afternoon. waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.friday night...east winds 10 to 15 kt becoming southeast 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 20 kt. waves 1 to 3 ft building
to 2 to 4 ft. 
.sunday...west gales to 35 kt increasing to gales to 40 kt.
freezing spray. chance of snow. waves 7 to 10 ft occasionally to
13 ft building to 10 to 14 ft occasionally to 18 ft.  

$$

fzus63 kmkx 232039
glflm 
expires:202512240415;;100748

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
239 pm cst tue dec 23 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...

northwest winds this afternoon with turn more easterly tonight
and southeasterly into wednesday, as high pressure around 30.4 
inches swings through tonight. winds turn back northerly later
wednesday night as another high pressure system around 30.5
inches swings through south central canada. winds swing back 
easterly as the high pushes east through christmas day.
southeast winds expected thursday night/friday with a weak low
pressure system around 29.7 inches passes likely south of the
lake friday. light and variable winds behind the system.

the next best chance for gales is early next week sunday through
monday with increasing chances, with high higher end gales
possible as well. this will be a result of a weak low passing
through with strong high pressure impinging from the west
causing a strong pressure gradient and thus strong northwest
winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-240415-
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-
239 pm cst tue dec 23 2025

sheboygan wi to pentwater mi south...

.tonight...northwest winds 10 to 20 kt veering to northeast 10 to
15 kt. waves 3 to 5 ft. 
.wednesday...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 2 to 4 ft. 
.wednesday night...south winds 10 to 20 kt backing to north.
chance of rain in the evening. waves 2 to 4 ft. 
.thursday...northeast winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.thursday night...east winds to 30 kt becoming southeast. rain
likely with a chance of light freezing rain overnight. waves 6 to
9 ft occasionally to 12 ft. 
.friday...southeast winds to 30 kt becoming east 10 to 20 kt in
the afternoon. rain likely in the morning. waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.friday night...northeast winds 5 to 10 kt becoming east. waves
2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest gales to 40 kt becoming west gales to 45 kt.
waves 12 to 16 ft occasionally to 21 ft.  

$$

fzus63 kmqt 232101
glfls 
expires:202512240900;;101555

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 23 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 29.8 inch low continues eastward through ontario and reaching 
quebec by this evening. in its wake, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tonight with weak 
troughing of 30.1 inches moving over the lake late wednesday as the 
high shifts east. 30.3 inch ridging builds back in for thursday as a 
30.5 inch high transits ontario. low pressure of 29.6 inches moves 
through the lower great lakes friday. a deepening low will then lift 
into the upper great lakes saturday night into sunday.



lsz263-240900-
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 tue dec 23 2025

.late this afternoon...northwest winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...north winds 15 to 25 knots diminishing to 5 to
15 knots by midnight, then veering south late. waves subsiding to
calm to 2 feet. 
.wednesday...south winds 5 to 15 knots becoming southwest 10 to
20 knots by late morning, then veering west by mid afternoon. a
slight chance of snow showers in the morning. waves calm to
2 feet. 
.wednesday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots by midnight. waves building to 2 to 4 feet. 
.thursday...northeast winds 10 to 20 knots becoming east 15 to
25 knots in the afternoon. a slight chance of snow showers in the
afternoon. waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...southeast winds 20 to 30 knots. snow. waves
building to 6 to 9 feet occasionally to 11 feet. 
.friday...south winds 15 to 25 knots diminishing to 5 to 15 knots
in the afternoon. a chance of snow. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.friday night...south winds 5 to 15 knots. waves subsiding to
1 to 3 feet. 
.saturday...south winds 10 to 20 knots becoming west gales to
40 knots. a chance of rain showers. freezing spray. waves
building to 8 to 11 feet occasionally to 14 feet. 
.sunday...west gales to 45 knots veering northwest. heavy
freezing spray. a chance of snow showers. waves building to 9 to
12 feet occasionally to 15 feet, then subsiding to 7 to 10 feet
occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 232101
glfls 
expires:202512240900;;101556

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 23 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 29.8 inch low continues eastward through ontario and reaching 
quebec by this evening. in its wake, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tonight with weak 
troughing of 30.1 inches moving over the lake late wednesday as the 
high shifts east. 30.3 inch ridging builds back in for thursday as a 
30.5 inch high transits ontario. low pressure of 29.6 inches moves 
through the lower great lakes friday. a deepening low will then lift 
into the upper great lakes saturday night into sunday.



lsz264-240900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm est tue dec 23 2025

...gale warning in effect until 10 pm est this evening...

.late this afternoon...northwest gales to 35 knots. waves 7 to
10 feet occasionally to 13 feet. 
.tonight...northwest gales to 35 knots becoming north 10 to
20 knots by midnight, then becoming south 5 to 15 knots late.
waves subsiding to calm to 2 feet. 
.wednesday...south winds 5 to 15 knots increasing to 10 to
20 knots by late morning, then veering southwest by mid
afternoon. a slight chance of snow showers in the morning. waves
building to 1 to 3 feet. 
.wednesday night...northwest winds 10 to 20 knots becoming north
15 to 25 knots by midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northeast winds 10 to 20 knots becoming east 15 to
25 knots in the afternoon. a slight chance of snow showers in the
afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...southeast winds 20 to 30 knots increasing to
gales to 35 knots after midnight. snow. waves building to 8 to
11 feet occasionally to 14 feet. 
.friday...south gales to 35 knots diminishing to 15 to 25 knots
in the afternoon. snow likely in the morning, then a chance of
snow in the afternoon. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.saturday...south winds 15 to 25 knots becoming west gales to
35 knots. a chance of rain showers. waves building to 9 to
12 feet occasionally to 15 feet. 
.sunday...west gales to 45 knots veering northwest. heavy
freezing spray. a chance of snow showers. waves building to 12 to
17 feet occasionally to 21 feet, then subsiding to 11 to 15 feet
occasionally to 19 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 232101
glfls 
expires:202512240900;;101557

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 23 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 29.8 inch low continues eastward through ontario and reaching 
quebec by this evening. in its wake, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tonight with weak 
troughing of 30.1 inches moving over the lake late wednesday as the 
high shifts east. 30.3 inch ridging builds back in for thursday as a 
30.5 inch high transits ontario. low pressure of 29.6 inches moves 
through the lower great lakes friday. a deepening low will then lift 
into the upper great lakes saturday night into sunday.



lsz265-240900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm est tue dec 23 2025

...gale warning in effect until 10 pm est this evening...

.late this afternoon...northwest gales to 40 knots. waves 8 to
11 feet occasionally to 14 feet. 
.tonight...northwest gales to 35 knots becoming north 10 to
20 knots by midnight, then diminishing to 5 to 15 knots late.
waves subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 15 knots increasing to 15 to
25 knots by late morning, then becoming southwest 10 to 20 knots
by mid afternoon. a slight chance of snow showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.wednesday night...west winds 10 to 20 knots becoming north 15 to
25 knots by midnight, then increasing to 20 to 30 knots late.
waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday...northeast winds 20 to 30 knots becoming east 15 to
25 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...southeast winds 20 to 30 knots increasing to
gales to 35 knots after midnight. snow. waves building to 6 to
9 feet occasionally to 11 feet. 
.friday...south gales to 35 knots diminishing to 15 to 25 knots
in the afternoon. snow likely in the morning, then a chance of
snow in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...south winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.saturday...south winds 15 to 25 knots becoming west gales to
45 knots. a chance of rain showers. a chance of snow showers.
waves building to 9 to 12 feet occasionally to 15 feet. 
.sunday...west storm force winds to 50 knots veering northwest.
heavy freezing spray. snow showers likely. waves building to
15 to 20 feet occasionally to 25 feet, then subsiding to 12 to
17 feet occasionally to 21 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 232101
glfls 
expires:202512240900;;101559

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 23 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 29.8 inch low continues eastward through ontario and reaching 
quebec by this evening. in its wake, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tonight with weak 
troughing of 30.1 inches moving over the lake late wednesday as the 
high shifts east. 30.3 inch ridging builds back in for thursday as a 
30.5 inch high transits ontario. low pressure of 29.6 inches moves 
through the lower great lakes friday. a deepening low will then lift 
into the upper great lakes saturday night into sunday.



lsz267-240900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm est tue dec 23 2025

...gale warning in effect until 10 pm est this evening...

.late this afternoon...northwest gales to 45 knots. waves 11 to
15 feet occasionally to 19 feet building to 12 to 17 feet
occasionally to 21 feet. 
.tonight...northwest gales to 40 knots becoming north 15 to
25 knots by midnight, then diminishing to 5 to 15 knots late.
waves subsiding to 2 to 4 feet. 
.wednesday...south winds 5 to 15 knots increasing to 15 to
25 knots. a chance of snow showers. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.wednesday night...southwest winds 15 to 25 knots veering
northwest by midnight, then becoming north 20 to 30 knots late.
waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday...northeast winds 15 to 25 knots becoming east 10 to
20 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...southeast winds 15 to 25 knots increasing to
gales to 35 knots after midnight. a chance of snow in the
evening, then snow after midnight. freezing spray after midnight.
waves building to 5 to 8 feet occasionally to 10 feet. 
.friday...southeast gales to 35 knots diminishing to 20 to
30 knots in the afternoon. snow. waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...southeast winds 15 to 25 knots. waves subsiding
to 2 to 4 feet. 
.saturday...southeast winds 20 to 30 knots becoming south gales
to 35 knots. a chance of rain and snow showers. waves building to
9 to 12 feet occasionally to 15 feet. 
.sunday...west gales to 45 knots veering northwest. freezing
spray. snow showers. waves building to 15 to 20 feet occasionally
to 25 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 232101
glfls 
expires:202512240900;;101554

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 23 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 29.8 inch low continues eastward through ontario and reaching 
quebec by this evening. in its wake, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tonight with weak 
troughing of 30.1 inches moving over the lake late wednesday as the 
high shifts east. 30.3 inch ridging builds back in for thursday as a 
30.5 inch high transits ontario. low pressure of 29.6 inches moves 
through the lower great lakes friday. a deepening low will then lift 
into the upper great lakes saturday night into sunday.



lsz162-240900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est tue dec 23 2025 /300 pm cst tue dec 23 2025/

.late this afternoon...northwest winds 10 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...north winds 5 to 15 knots veering northeast by
midnight, then veering south late. waves subsiding to calm to
2 feet. 
.wednesday...south winds 5 to 15 knots veering west by mid
afternoon. a slight chance of snow showers in the morning. waves
calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots increasing to 10 to
20 knots by midnight, then veering northeast late. waves building
to 1 to 3 feet. 
.thursday...northeast winds 15 to 25 knots veering east in the
afternoon. a chance of snow showers in the afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...southeast winds 15 to 25 knots. snow. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...south winds 10 to 20 knots becoming southwest 5 to
15 knots in the afternoon. a chance of snow, possibly mixed with
rain in the morning. waves subsiding to 1 to 3 feet. 
.friday night...south winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday...south winds 10 to 20 knots becoming west gales to
35 knots. a chance of rain showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.sunday...west gales to 40 knots veering northwest. heavy
freezing spray. waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 232101
glfls 
expires:202512240900;;101558

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue dec 23 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 29.8 inch low continues eastward through ontario and reaching 
quebec by this evening. in its wake, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tonight with weak 
troughing of 30.1 inches moving over the lake late wednesday as the 
high shifts east. 30.3 inch ridging builds back in for thursday as a 
30.5 inch high transits ontario. low pressure of 29.6 inches moves 
through the lower great lakes friday. a deepening low will then lift 
into the upper great lakes saturday night into sunday.



lsz266-240900-
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 tue dec 23 2025

...gale warning in effect until 10 pm est this evening...

.late this afternoon...northwest gales to 45 knots. waves 11 to
15 feet occasionally to 19 feet building to 12 to 17 feet
occasionally to 21 feet. 
.tonight...northwest gales to 40 knots becoming north 15 to
25 knots by midnight, then diminishing to 5 to 15 knots late.
waves subsiding to 2 to 4 feet. 
.wednesday...south winds 10 to 20 knots increasing to 15 to
25 knots by late morning, then veering southwest by mid
afternoon. a slight chance of snow showers. waves subsiding to
1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet.
.wednesday night...west winds 10 to 20 knots becoming north 15 to
25 knots by midnight, then increasing to 20 to 30 knots late.
freezing spray after midnight. waves subsiding to 2 to 4 feet,
then building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northeast winds 15 to 25 knots veering east in the
afternoon. freezing spray in the morning. a slight chance of snow
showers in the afternoon. waves subsiding to 2 to 4 feet. 
.thursday night...southeast winds 20 to 30 knots increasing to
gales to 35 knots after midnight. snow. waves building to 8 to
11 feet occasionally to 14 feet. 
.friday...southeast gales to 35 knots becoming south 20 to
30 knots in the afternoon. snow in the morning, then a chance of
snow in the afternoon. waves subsiding to 4 to 7 feet
occasionally to 9 feet. 
.friday night...south winds 10 to 20 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.saturday...south winds 20 to 30 knots increasing to gales to
40 knots. a chance of rain showers. waves building to 10 to
14 feet occasionally to 18 feet. 
.sunday...west storm force winds to 55 knots veering northwest.
heavy freezing spray. snow showers likely. a chance of snow
showers. waves building to 17 to 22 feet occasionally to 28 feet,
then subsiding to 15 to 20 feet occasionally to 25 feet. 

note, wave height forecasts are for ice free areas.

$$