fzus63 kdtx 270255
glflh 
expires:202512271100;;289241

open lake forecast for lake huron
national weather service detroit/pontiac mi
955 pm est fri dec 26 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak ridge of high pressure takes residence through
early saturday. low pressure, deepening to 28.90 inches, then
moves into the region sunday night, bringing west to northwest
gales on monday as arctic air filters back into the region. a
cold northwest flow pattern will dominate much of next week.


lhz361-362-271100-
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-
955 pm est fri dec 26 2025

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

.rest of tonight...northeast winds 10 to 15 knots becoming east
5 to 10 knots early in the morning. waves 3 to 5 feet. 
.saturday...northeast winds 5 to 10 knots becoming southeast
10 to 15 knots in the late morning and afternoon. waves 1 to
3 feet building to 2 to 4 feet late in the afternoon. 
.saturday night...southeast winds 15 to 20 knots. waves 3 to
5 feet building to 5 to 7 feet after midnight. waves occasionally
around 10 feet. 
.sunday...southeast winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. rain likely. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.sunday night...east winds 10 to 15 knots becoming northeast
20 to 25 knots with gusts to around 30 knots. rain in the
evening...then rain and snow after midnight. waves 4 to 6 feet
building to 6 to 9 feet after midnight. waves occasionally around
12 feet. 
.monday...southwest winds to 30 knots with gusts to 35 knot gales
becoming northwest to 45 knot gales. snow. freezing spray. snow 
may be heavy at times in the morning. waves 12 to 16 feet building
to 18 to 23 feet late in the afternoon. waves occasionally around
28 feet. a gale warning may be needed. 
.tuesday...northwest wind to 35 knot gales with gusts to 40 knot 
gales becoming west 20 to 25 knots with gusts to 35 knot gales. 
freezing spray. a chance of snow. waves 14 to 18 feet subsiding to
8 to 12 feet . waves occasionally around 23 feet. 
.wednesday...northwest winds 20 to 25 knots increasing to
30 knots. a chance of snow. heavy freezing spray. waves 10 to 14 
feet. waves occasionally around 18 feet. 


$$

fzus63 kdtx 270255
glflh 
expires:202512271100;;289242

open lake forecast for lake huron
national weather service detroit/pontiac mi
955 pm est fri dec 26 2025

for waters beyond five nautical miles off shore on lake huron

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

.synopsis...a weak ridge of high pressure takes residence through
early saturday. low pressure, deepening to 28.90 inches, then
moves into the region sunday night, bringing west to northwest
gales on monday as arctic air filters back into the region. a
cold northwest flow pattern will dominate much of next week.


lhz363-462-271100-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
955 pm est fri dec 26 2025

...gale watch in effect from late sunday night through tuesday
morning...

.rest of tonight...northeast winds 10 to 15 knots decreasing to
5 to 10 knots early in the morning. waves 2 to 4 feet subsiding
to 1 to 3 feet early in the morning. 
.saturday...northeast winds 5 to 10 knots veering to the east in
the late morning and early afternoon...then becoming southeast
10 to 15 knots late in the afternoon. waves 1 to 3 feet. 
.saturday night...southeast winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. waves 3 to
5 feet building to 4 to 6 feet after midnight. waves occasionally
around 8 feet. 
.sunday...southeast winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. rain likely in the morning...
then rain in the afternoon. waves 4 to 6 feet. 
.sunday night...southeast winds 10 to 15 knots becoming northeast
15 to 20 knots by midnight...then becoming southwest 20 to
25 knots with gusts to around 30 knots after midnight. rain in
the evening...then rain and snow after midnight. waves 3 to
5 feet building to 6 to 9 feet after midnight. waves occasionally
around 12 feet. 
.monday...west winds to 30 knots with gusts to 40 knot gales
becoming northwest at 45 knot gales. snow likely...then a chance 
of snow late in the afternoon. freezing spray late in the 
afternoon. waves 12 to 16 feet building to 18 to 23 feet late in 
the afternoon. waves occasionally around 28 feet. a gale warning 
may be needed. 
.tuesday...northwest at 35 knot gales with gusts to 40 knot gales
becoming west 20 to 25 knots with gusts to around 30 knots.
freezing spray early in the morning. a chance of snow. waves
14 to 18 feet subsiding to 8 to 12 feet. waves occasionally 
around 23 feet. 
.wednesday...west winds 20 to 25 knots increasing to 30 knots. 
a chance of snow. freezing spray. waves 8 to 12 feet. waves 
occasionally around 15 feet. 


$$

fzus63 kmkx 270309
glflm 
expires:202512271015;;290170

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
909 pm cst fri dec 26 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...

high pressure around 29.9 inches will move across the lake late 
tonight into saturday morning, with light and variable winds. 
modest southeast winds will then return by midday saturday and 
continue through sunday morning as low pressure develops over the 
central great plains. low pressure then deepens to 29.4 inches 
sunday evening as it tracks across far southern lake mi, then 
deepens to 28.9 inches over northern lake huron monday morning. 
the strong low will then reach far southern quebec by late monday.
confidence is high in northwesterly gale force winds late sunday 
night through monday night with some potential for storm force 
gusts on monday. a gale watch is now in effect. much colder air 
will also bring moderate freezing spray throughout this time 
frame.


lmz080-669-671-673-675-777-779-870-872-874-876-878-271015-
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-
909 pm cst fri dec 26 2025

sheboygan wi to pentwater mi south...

...gale watch in effect from late sunday night through late
monday night...

.rest of tonight...northwest winds 10 to 15 kt veering to
northeast. waves 2 to 4 ft. 
.saturday...southeast winds 10 to 15 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.saturday night...southeast winds 15 to 25 kt diminishing to
10 to 20 kt. rain likely overnight. waves 4 to 7 ft occasionally
to 9 ft. 
.sunday...south winds 10 to 20 kt veering to west. rain likely in
the morning, then rain in the afternoon. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.sunday night...northwest winds to 30 kt becoming west gales to
40 kt overnight. rain in the evening, then snow and rain likely
overnight. waves 4 to 7 ft occasionally to 9 ft building to 10 to
14 ft occasionally to 18 ft. 
.monday...northwest gales to 45 kt increasing to storm force
winds to 50 kt. freezing spray in the morning. snow likely in the
morning, then chance of snow in the afternoon. waves 14 to 18 ft
occasionally to 23 ft. 
.monday night...northwest gales to 45 kt diminishing to gales to
40 kt. freezing spray. chance of snow. waves 14 to 18 ft
occasionally to 23 ft. 
.tuesday...northwest winds to 30 kt becoming west. freezing
spray. chance of snow. waves 10 to 14 ft occasionally to 18 ft
subsiding to 7 to 10 ft occasionally to 13 ft. 
.wednesday...northwest winds to 30 kt. freezing spray. waves 8 to
11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 270309
glflm 
expires:202512271015;;290169

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
909 pm cst fri dec 26 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...

high pressure around 29.9 inches will move across the lake late 
tonight into saturday morning, with light and variable winds. 
modest southeast winds will then return by midday saturday and 
continue through sunday morning as low pressure develops over the 
central great plains. low pressure then deepens to 29.4 inches 
sunday evening as it tracks across far southern lake mi, then 
deepens to 28.9 inches over northern lake huron monday morning. 
the strong low will then reach far southern quebec by late monday.
confidence is high in northwesterly gale force winds late sunday 
night through monday night with some potential for storm force 
gusts on monday. a gale watch is now in effect. much colder air 
will also bring moderate freezing spray throughout this time 
frame.


lmz261-362-364-366-563-565-567-868-271015-
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-
909 pm cst fri dec 26 2025

sheboygan wi to pentwater mi north...

...gale watch in effect from late sunday night through late
monday night...

.rest of tonight...north winds 5 to 10 kt backing to south. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 15 kt becoming south 15 to
25 kt. waves 1 to 2 ft building to 3 to 5 ft. 
.saturday night...southeast winds 15 to 25 kt diminishing to
10 to 20 kt. chance of rain and light freezing rain overnight.
waves 4 to 7 ft occasionally to 9 ft. 
.sunday...southeast winds 10 to 15 kt becoming northeast. chance
of rain and light freezing rain in the morning, then rain likely
in the afternoon. waves 4 to 6 ft occasionally to 8 ft subsiding
to 2 to 4 ft. 
.sunday night...north winds to 30 kt increasing to gales to 40 kt
overnight. rain and snow in the evening, then snow overnight.
waves 4 to 6 ft occasionally to 8 ft building to 8 to 12 ft
occasionally to 16 ft. 
.monday...northwest gales to 45 kt increasing to storm force
winds to 50 kt. freezing spray. snow in the morning, then snow
likely in the afternoon. waves 12 to 16 ft occasionally to 21 ft.
.monday night...northwest storm force winds to 50 kt diminishing
to gales to 45 kt. freezing spray. chance of snow. waves 12 to
16 ft occasionally to 21 ft. 
.tuesday...northwest winds to 30 kt becoming west. chance of
snow. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.wednesday...northwest gales to 35 kt. freezing spray. chance of
snow. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 270301
glfls 
expires:202512270900;;289540

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri dec 26 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...

30.0 inch ridge builds across the lake tonight ahead of a 29.6 inch 
low lifting northeast into the great lakes sunday. this low deepens 
to 28.8 inches as it lifts to near the straits of mackinac by monday 
morning. meanwhile, a strong high pressure of at least 30.6 inches 
will spread across the great plains as the low lifts into quebec. 
30.1 inch ridging builds overhead by tuesday morning. a 29.8 inch 
trough dives southeast into the upper great lakes late tuesday, 
remaining overhead until at least wednesday afternoon.



lsz264-270900-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm est fri dec 26 2025

...gale watch in effect from sunday evening through monday
evening...

.rest of tonight...northwest winds less than 10 knots backing
southwest late. waves 1 to 3 feet subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 15 to
25 knots. a chance of rain showers in the afternoon. waves
building to 4 to 7 feet occasionally to 9 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers. waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...south winds 5 to 15 knots becoming north 15 to 25 knots
in the afternoon. a chance of rain showers. a chance of snow
showers in the afternoon. waves subsiding to 1 to 3 feet, then
building to 3 to 6 feet occasionally to 8 feet. 
.sunday night...north gales to 45 knots. freezing spray. snow
showers likely, possibly mixed with rain showers in the evening.
snow showers after midnight. waves building to 12 to 17 feet
occasionally to 21 feet. 
.monday...north storm force winds to 55 knots. heavy freezing
spray. snow showers likely in the morning. a chance of snow
showers in the afternoon. waves building to 15 to 20 feet
occasionally to 25 feet. 
.monday night...northwest gales to 45 knots. heavy freezing
spray. waves subsiding to 6 to 9 feet occasionally to 11 feet. 
.tuesday...northwest gales to 45 knots. heavy freezing spray. a
chance of snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.wednesday...northwest gales to 45 knots increasing to storm
force winds to 55 knots. heavy freezing spray. a chance of snow
showers. waves subsiding to 8 to 11 feet occasionally to 14 feet,
then building to 10 to 14 feet occasionally to 18 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270301
glfls 
expires:202512270900;;289541

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri dec 26 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...

30.0 inch ridge builds across the lake tonight ahead of a 29.6 inch 
low lifting northeast into the great lakes sunday. this low deepens 
to 28.8 inches as it lifts to near the straits of mackinac by monday 
morning. meanwhile, a strong high pressure of at least 30.6 inches 
will spread across the great plains as the low lifts into quebec. 
30.1 inch ridging builds overhead by tuesday morning. a 29.8 inch 
trough dives southeast into the upper great lakes late tuesday, 
remaining overhead until at least wednesday afternoon.



lsz265-270900-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm est fri dec 26 2025

...storm watch in effect from late sunday night through monday
evening...

.rest of tonight...west winds 5 to 15 knots backing southwest by
midnight. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots. a slight chance of rain showers in the afternoon. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...south winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers. waves subsiding to 2 to
4 feet. 
.sunday...south winds 10 to 20 knots backing north in the
afternoon. a chance of rain showers in the morning, then rain and
snow showers likely in the afternoon. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 
.sunday night...north gales to 45 knots. a slight chance of rain
showers in the evening. snow showers. freezing spray after
midnight. waves building to 15 to 20 feet occasionally to
25 feet. 
.monday...north storm force winds to 55 knots. heavy freezing
spray. snow showers. waves building to 17 to 22 feet occasionally
to 28 feet, then subsiding to 15 to 20 feet occasionally to
25 feet. 
.monday night...northwest storm force winds to 50 knots
diminishing to gales to 40 knots after midnight. heavy freezing
spray. a chance of snow showers. waves subsiding to 7 to 10 feet
occasionally to 13 feet. 
.tuesday...west gales to 35 knots becoming northwest storm force
winds to 50 knots. heavy freezing spray. a chance of snow
showers. snow showers likely. waves subsiding to 3 to 6 feet
occasionally to 8 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.wednesday...northwest storm force winds to 60 knots. heavy
freezing spray. a chance of snow showers. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 8 to 11 feet
occasionally to 14 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270301
glfls 
expires:202512270900;;289542

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri dec 26 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...

30.0 inch ridge builds across the lake tonight ahead of a 29.6 inch 
low lifting northeast into the great lakes sunday. this low deepens 
to 28.8 inches as it lifts to near the straits of mackinac by monday 
morning. meanwhile, a strong high pressure of at least 30.6 inches 
will spread across the great plains as the low lifts into quebec. 
30.1 inch ridging builds overhead by tuesday morning. a 29.8 inch 
trough dives southeast into the upper great lakes late tuesday, 
remaining overhead until at least wednesday afternoon.



lsz266-270900-
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 fri dec 26 2025

...storm watch in effect from late sunday night through monday
evening...

.rest of tonight...west winds 5 to 15 knots backing south late.
waves 1 to 3 feet subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible. a slight chance
of rain showers in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet. 
.saturday night...south winds 20 to 30 knots diminishing to 15 to
25 knots late. a chance of rain showers in the evening, then rain
showers likely after midnight. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday...south winds 10 to 20 knots backing northeast in the
afternoon. a chance of rain showers in the morning, then rain
showers likely, possibly mixed with snow showers in the
afternoon. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.sunday night...north gales to 45 knots. rain showers in the
evening. snow showers. freezing spray after midnight. waves
building to 15 to 20 feet occasionally to 25 feet. 
.monday...north storm force winds to 55 knots. heavy freezing
spray. snow showers. waves building to 20 to 25 feet occasionally
to 31 feet. 
.monday night...north storm force winds to 55 knots becoming
northwest gales to 45 knots after midnight. heavy freezing spray.
a chance of snow showers. waves subsiding to 10 to 14 feet
occasionally to 18 feet. 
.tuesday...northwest gales to 45 knots. freezing spray. a chance
of snow showers. snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 11 to 15 feet
occasionally to 19 feet. 
.wednesday...northwest storm force winds to 55 knots. heavy
freezing spray. snow showers. a chance of snow showers. waves
building to 15 to 20 feet occasionally to 25 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270301
glfls 
expires:202512270900;;289543

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri dec 26 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...

30.0 inch ridge builds across the lake tonight ahead of a 29.6 inch 
low lifting northeast into the great lakes sunday. this low deepens 
to 28.8 inches as it lifts to near the straits of mackinac by monday 
morning. meanwhile, a strong high pressure of at least 30.6 inches 
will spread across the great plains as the low lifts into quebec. 
30.1 inch ridging builds overhead by tuesday morning. a 29.8 inch 
trough dives southeast into the upper great lakes late tuesday, 
remaining overhead until at least wednesday afternoon.



lsz267-270900-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm est fri dec 26 2025

...storm watch in effect from late sunday night through monday
evening...

.rest of tonight...south winds 10 to 20 knots. waves calm to
2 feet. 
.saturday...south winds 15 to 25 knots backing southeast by late
morning, then increasing to 20 to 30 knots by mid afternoon.
patchy fog in the morning. waves building to 3 to 6 feet
occasionally to 8 feet. 
.saturday night...southeast winds 20 to 30 knots. a chance of
rain showers, possibly mixed with snow in the evening, then rain
showers likely after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday...southeast winds 10 to 20 knots backing east in the
afternoon. a chance of rain showers in the morning, then rain
showers likely, possibly mixed with snow showers in the
afternoon. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.sunday night...northeast winds 20 to 30 knots becoming north
gales to 40 knots after midnight. rain showers in the evening.
snow showers. a slight chance of rain showers after midnight.
freezing spray after midnight. waves building to 10 to 14 feet
occasionally to 18 feet. 
.monday...north storm force winds to 55 knots. freezing spray.
snow showers. waves building to 17 to 22 feet occasionally to
28 feet. 
.monday night...north storm force winds to 55 knots becoming
northwest gales to 45 knots after midnight. heavy freezing spray.
snow showers likely in the evening. a chance of snow showers
after midnight. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.tuesday...northwest gales to 40 knots. freezing spray. snow
showers. waves subsiding to 6 to 9 feet occasionally to 11 feet,
then building to 10 to 14 feet occasionally to 18 feet. 
.wednesday...northwest gales to 45 knots increasing to storm
force winds to 55 knots. heavy freezing spray. snow showers
likely. waves building to 15 to 20 feet occasionally to 25 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270301
glfls 
expires:202512270900;;289538

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri dec 26 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...

30.0 inch ridge builds across the lake tonight ahead of a 29.6 inch 
low lifting northeast into the great lakes sunday. this low deepens 
to 28.8 inches as it lifts to near the straits of mackinac by monday 
morning. meanwhile, a strong high pressure of at least 30.6 inches 
will spread across the great plains as the low lifts into quebec. 
30.1 inch ridging builds overhead by tuesday morning. a 29.8 inch 
trough dives southeast into the upper great lakes late tuesday, 
remaining overhead until at least wednesday afternoon.



lsz162-270900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est fri dec 26 2025 /900 pm cst fri dec 26 2025/

...gale watch in effect from sunday evening through monday
evening...

.rest of tonight...north winds 5 to 15 knots backing southwest by
midnight, then backing south late. waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots increasing to 10 to
20 knots. a chance of rain showers. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots veering south by
midnight. a chance of rain showers. waves calm to 2 feet. 
.sunday...northwest winds 10 to 20 knots becoming north 15 to
25 knots in the afternoon. a chance of rain showers, possibly
mixed with snow in the morning, then snow showers, possibly mixed
with rain in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...north gales to 45 knots. snow showers. heavy
freezing spray after midnight. waves building to 6 to 9 feet
occasionally to 11 feet. 
.monday...north gales to 40 knots backing northwest in the
afternoon. heavy freezing spray. a chance of snow showers. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.monday night...northwest gales to 40 knots diminishing to 15 to
25 knots after midnight. a chance of snow showers after midnight.
waves subsiding to 1 to 3 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest gales to
35 knots. snow showers likely. waves subsiding to calm to 2 feet,
then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest gales to 40 knots. waves building to 3 to
6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 270301
glfls 
expires:202512270900;;289539

open lake forecast for lake superior
national weather service marquette mi
1000 pm est fri dec 26 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...

30.0 inch ridge builds across the lake tonight ahead of a 29.6 inch 
low lifting northeast into the great lakes sunday. this low deepens 
to 28.8 inches as it lifts to near the straits of mackinac by monday 
morning. meanwhile, a strong high pressure of at least 30.6 inches 
will spread across the great plains as the low lifts into quebec. 
30.1 inch ridging builds overhead by tuesday morning. a 29.8 inch 
trough dives southeast into the upper great lakes late tuesday, 
remaining overhead until at least wednesday afternoon.



lsz263-270900-
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 fri dec 26 2025

...gale watch in effect from sunday evening through monday
evening...

.rest of tonight...northwest winds less than 10 knots backing
southwest by midnight, then becoming south 5 to 15 knots late.
waves calm to 2 feet. 
.saturday...southeast winds 5 to 15 knots becoming south 10 to
20 knots by mid afternoon. a slight chance of rain showers. waves
building to 2 to 4 feet. 
.saturday night...south winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. a chance of rain showers. waves subsiding
to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots becoming north 15 to
25 knots in the afternoon. a chance of rain showers in the
morning, then rain and snow showers likely in the afternoon.
waves subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...north gales to 45 knots. freezing spray. a slight
chance of rain showers in the evening. snow showers. waves
building to 12 to 17 feet occasionally to 21 feet. 
.monday...north gales to 45 knots. heavy freezing spray. a chance
of snow showers. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.monday night...northwest gales to 40 knots diminishing to 20 to
30 knots after midnight. freezing spray in the evening. a chance
of snow showers after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest gales to
40 knots. a chance of snow showers. heavy freezing spray. waves
subsiding to 3 to 5 feet occasionally to 7 feet, then building to
6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest gales to 45 knots. heavy freezing spray.
waves building to 7 to 10 feet occasionally to 13 feet. 

note, wave height forecasts are for ice free areas.

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