fzus63 kdtx 221439
glflh 
expires:202512222245;;029884

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am est mon dec 22 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...high pressure exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lhz361-222245-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
939 am est mon dec 22 2025

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


$$

fzus63 kdtx 221439
glflh 
expires:202512222245;;029885

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am est mon dec 22 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...high pressure exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lhz362-363-222245-
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-
939 am est mon dec 22 2025

.rest of today...southwest winds 15 to 20 knots becoming south
10 to 15 knots late in the afternoon. a chance of rain and snow
in the afternoon. waves 4 to 6 feet. waves occasionally around
8 feet. 
.tonight...south winds 10 to 15 knots increasing to 15 to
20 knots by midnight...then decreasing to 10 to 15 knots early in
the morning. a chance of rain and snow. waves 3 to 5 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the afternoon. a chance of rain and snow in the
morning. waves 3 to 5 feet building to 5 to 7 feet early in the
afternoon. waves occasionally around 10 feet. 
.tuesday night...northwest winds 20 to 25 knots with gusts to
around 30 knots decreasing to 15 to 20 knots after midnight.
waves 10 to 14 feet. waves occasionally around 18 feet. 
.wednesday...north winds 5 to 10 knots veering to the northeast
late in the morning...then becoming south 10 to 15 knots late in
the afternoon. waves 5 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 10 feet. 
.thursday...southwest winds 5 to 10 knots veering to the
northeast in the late morning and early afternoon...then becoming
east 10 to 15 knots early in the evening increasing to 15 to
20 knots by midnight. a chance of rain by midnight. waves 1 to
3 feet building to 3 to 5 feet . 
.friday...east winds 15 to 20 knots backing to the north early in
the evening...then becoming northwest 10 to 15 knots by midnight.
a chance of rain and snow until afternoon...then a chance of rain
early in the evening. waves 4 to 6 feet. 


$$

fzus63 kdtx 221439
glflh 
expires:202512222245;;029886

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am est mon dec 22 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...high pressure exits from the ohio valley into the
carolinas this morning which will reinforce southwest flow across
the great lakes. low pressure, 29.80 inches, will then travel
from west to east across lake superior tomorrow. passage of this
system will veer wind direction to the northwest and will
increase wind speeds across the northern half of lake huron.


lhz462>464-222245-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
939 am est mon dec 22 2025

.rest of today...southwest winds 10 to 15 knots. a chance of snow
and rain in the afternoon. waves 2 to 4 feet. 
.tonight...south winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. a chance of rain and snow. waves
3 to 5 feet. 
.tuesday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the afternoon. a chance of rain in the morning.
waves 3 to 5 feet subsiding to 1 to 3 feet in the late morning
and early afternoon...then building to 2 to 4 feet early in the
afternoon. 
.tuesday night...northwest winds 15 to 20 knots. waves 6 to
9 feet. waves occasionally around 12 feet. 
.wednesday...northwest winds 5 to 10 knots veering to the
northeast late in the morning...then becoming south 10 to
15 knots late in the afternoon. waves 5 to 7 feet subsiding to
2 to 4 feet. waves occasionally around 10 feet. 
.thursday...south winds 5 to 10 knots backing to the northeast in
the late morning and early afternoon...then veering to the east
early in the evening becoming southeast 10 to 15 knots by
midnight. a chance of rain early in the evening. rain likely by
midnight. waves 1 to 3 feet building to 2 to 4 feet by midnight. 
.friday...southeast winds 15 to 20 knots backing to the northeast
in the late morning and early afternoon...then backing to the
north early in the evening becoming northwest 10 to 15 knots by
midnight. rain likely until afternoon. a chance of rain early in
the evening. waves 4 to 6 feet. waves occasionally around 8 feet.


$$

fzus63 kmkx 221508
glflm 
expires:202512222215;;031079

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
908 am cst mon dec 22 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...

south winds will increase today, as low pressure around 29.8 
inches over the central plains slowly moves east. gusts to 30 
knots are expected over southern lake michigan, with gales not 
expected.

southwest winds will shift west tonight into tuesday, as low 
pressure around 29.8 inches moves into ontario. winds will shift 
northwest by tuesday afternoon, as high pressure around 30.4 
inches moves into the northern great plains. winds will subside 
tuesday night, as the high crosses lake michigan. these winds will
shift out of the southeast wednesday, as the high moves east of 
the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-222215-
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-
908 am cst mon dec 22 2025

sheboygan wi to pentwater mi south...

.rest of today...south winds 15 to 25 kt diminishing to 10 to
20 kt. areas of drizzle, light freezing drizzle, slight chance of
rain and snow late this morning, then slight chance of snow with
patchy drizzle this afternoon. waves 4 to 7 ft occasionally to
9 ft. 
.tonight...south winds 10 to 20 kt becoming west. patchy drizzle
in the evening. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.tuesday...west winds 10 to 20 kt becoming northwest. waves 3 to
5 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming northeast
10 to 15 kt. waves 2 to 4 ft. 
.wednesday...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...south winds 10 to 15 kt becoming east 5 to
10 kt. chance of rain. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...east winds 5 to 10 kt becoming southeast 10 to 15 kt.
waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft.  

$$

fzus63 kmkx 221508
glflm 
expires:202512222215;;031078

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
908 am cst mon dec 22 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...

south winds will increase today, as low pressure around 29.8 
inches over the central plains slowly moves east. gusts to 30 
knots are expected over southern lake michigan, with gales not 
expected.

southwest winds will shift west tonight into tuesday, as low 
pressure around 29.8 inches moves into ontario. winds will shift 
northwest by tuesday afternoon, as high pressure around 30.4 
inches moves into the northern great plains. winds will subside 
tuesday night, as the high crosses lake michigan. these winds will
shift out of the southeast wednesday, as the high moves east of 
the region.


lmz261-362-364-366-563-565-567-868-222215-
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-
908 am cst mon dec 22 2025

sheboygan wi to pentwater mi north...

.rest of today...southwest winds to 30 kt becoming south 10 to
20 kt. rain likely with possible snow, drizzle and freezing
drizzle late this morning, then areas of drizzle with possible
rain, snow and freezing drizzle this afternoon. waves 4 to 7 ft
occasionally to 9 ft. 
.tonight...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of snow with possible drizzle and freezing drizzle
in the evening. waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft. 
.tuesday...west winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.tuesday night...northwest winds 15 to 25 kt becoming north 10 to
15 kt overnight. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.wednesday...southeast winds 10 to 20 kt becoming south. waves
2 to 4 ft building to 3 to 5 ft. 
.wednesday night...south winds 10 to 15 kt veering to north.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...east winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday...north winds 10 to 20 kt. chance of rain. waves 3 to
5 ft.  

$$

fzus63 kmqt 221501
glfls 
expires:202512222100;;030583

open lake forecast for lake superior
national weather service marquette mi
1000 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. 30.3 inch ridging builds back in for thursday, 
followed by low pressure of at least 29.6 inches moving across the 
great lakes basin friday.



lsz264-222100-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.rest of today...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering south by
midnight, then becoming southwest 10 to 20 knots late. a slight
chance of snow. a chance of rain after midnight. waves building
to 1 to 3 feet. 
.tuesday...west winds 20 to 30 knots increasing to gales to
35 knots by late morning, then veering northwest by mid
afternoon. waves building to 7 to 11 feet occasionally to
14 feet. 
.tuesday night...north winds 20 to 30 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 10 to 20 knots. waves building to 1 to
3 feet. 
.wednesday night...west winds 5 to 15 knots veering north after
midnight. waves 1 to 3 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots. snow showers likely. waves building to 7 to 10 feet
occasionally to 13 feet. 
.friday...northeast winds 15 to 25 knots becoming south 10 to
20 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 221501
glfls 
expires:202512222100;;030584

open lake forecast for lake superior
national weather service marquette mi
1000 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. 30.3 inch ridging builds back in for thursday, 
followed by low pressure of at least 29.6 inches moving across the 
great lakes basin friday.



lsz265-222100-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.rest of today...southwest winds 5 to 15 knots backing south by
late morning, then becoming southeast 10 to 20 knots by mid
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering southwest late.
a slight chance of snow. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday...west gales to 40 knots veering northwest by mid
afternoon. waves building to 6 to 10 feet occasionally to
13 feet. 
.tuesday night...northwest winds 20 to 30 knots becoming north
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...south winds 10 to 20 knots. waves subsiding to calm
to 2 feet, then building to 1 to 3 feet. 
.wednesday night...southwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots. rain and snow showers likely. waves building to 5 to
8 feet occasionally to 10 feet. 
.friday...north winds 15 to 25 knots veering south. a chance of
snow showers. waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 221501
glfls 
expires:202512222100;;030585

open lake forecast for lake superior
national weather service marquette mi
1000 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. 30.3 inch ridging builds back in for thursday, 
followed by low pressure of at least 29.6 inches moving across the 
great lakes basin friday.



lsz266-222100-
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 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.rest of today...southwest winds 10 to 20 knots backing southeast
by mid afternoon. waves calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south by
midnight. a slight chance of snow. a slight chance of rain after
midnight. waves building to 1 to 3 feet. 
.tuesday...west winds 20 to 30 knots increasing to gales to
40 knots by late morning, then veering northwest by mid
afternoon. waves building to 11 to 15 feet occasionally to
19 feet. 
.tuesday night...northwest gales to 35 knots becoming north 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...south winds 15 to 25 knots. waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...southwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 1 to 3 feet. 
.thursday...east winds 15 to 25 knots increasing to 20 to
30 knots. snow showers likely. waves building to 6 to 9 feet
occasionally to 11 feet. 
.friday...northeast winds 20 to 30 knots becoming south 15 to
25 knots. a chance of snow showers. waves subsiding to 2 to
4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 221501
glfls 
expires:202512222100;;030586

open lake forecast for lake superior
national weather service marquette mi
1000 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. 30.3 inch ridging builds back in for thursday, 
followed by low pressure of at least 29.6 inches moving across the 
great lakes basin friday.



lsz267-222100-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am est mon dec 22 2025

...gale watch in effect from tuesday morning through tuesday
evening...

.rest of today...southwest winds 10 to 20 knots backing south by
mid afternoon. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots veering south by
midnight. a chance of snow. a chance of rain after midnight.
waves building to 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west gales to
35 knots by late morning, then becoming northwest gales to
40 knots by mid afternoon. a slight chance of rain and snow
showers. waves building to 11 to 15 feet occasionally to 19 feet.
.tuesday night...northwest gales to 35 knots becoming north 10 to
20 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...south winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...south winds 10 to 20 knots veering northwest
after midnight. waves subsiding to calm to 2 feet. 
.thursday...east winds 10 to 20 knots increasing to 20 to
30 knots. snow showers likely. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...east winds 15 to 25 knots veering south. a chance of
snow showers. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 221501
glfls 
expires:202512222100;;030581

open lake forecast for lake superior
national weather service marquette mi
1000 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. 30.3 inch ridging builds back in for thursday, 
followed by low pressure of at least 29.6 inches moving across the 
great lakes basin friday.



lsz162-222100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est mon dec 22 2025 /900 am cst mon dec 22 2025/

.rest of today...southeast winds 5 to 15 knots backing east by
late morning, then increasing to 10 to 20 knots by mid afternoon.
waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots veering south by midnight,
then veering west late. a slight chance of snow. waves building
to 1 to 3 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...north winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 10 to 20 knots becoming northeast 15 to
25 knots. a chance of rain and snow showers, then snow showers,
possibly mixed with rain. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north winds 10 to 20 knots veering south. a chance of
snow showers. waves subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 221501
glfls 
expires:202512222100;;030582

open lake forecast for lake superior
national weather service marquette mi
1000 am est mon dec 22 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 30.2 inch ridge this morning weakens today as high pressure moves 
toward the atlantic and a low from the plains organizes and lifts 
northeast to ontario. by tuesday this 29.8 inch low will press east 
north of thunder bay. afterwards, a 30.4 inch high pressure moves 
over lake superior from the canadian prairies tuesday night with 
weak troughing of 30.0 inches moving over the lake late wednesday as 
the high shifts east. 30.3 inch ridging builds back in for thursday, 
followed by low pressure of at least 29.6 inches moving across the 
great lakes basin friday.



lsz263-222100-
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 am est mon dec 22 2025

.rest of today...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south by
midnight, then becoming southwest 10 to 20 knots late. a slight
chance of snow. waves building to 2 to 4 feet. 
.tuesday...west winds 20 to 30 knots veering northwest by mid
afternoon. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday night...north winds 15 to 25 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 15 to 25 knots. snow showers, possibly
mixed with rain. waves building to 7 to 10 feet occasionally to
13 feet. 
.friday...northeast winds 15 to 25 knots becoming south 10 to
20 knots. a chance of rain showers. a chance of snow showers.
waves subsiding to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$