fzus63 kdtx 122000
glflh 
expires:202603130400;;561451

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt thu mar 12 2026

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 brief ridge of high pressure, 30.10 inches, holds
over the great lakes through the evening. a strong low pressure
system, 29.10 inches, then enters northern lower michigan and
central lake huron tomorrow morning. this will bring widespread
gales to the great lakes. a gale warning is in effect. the low
quickly moves out friday night with high pressure building back
in on saturday.


lhz361-362-130400-
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-
400 pm edt thu mar 12 2026

...gale warning in effect from late tonight through late friday
night...

.tonight...west winds 10 to 15 knots decreasing to 5 to 10 knots
late in the evening...then becoming southeast 10 to 15 knots
after midnight increasing to 15 to 20 knots with gusts to 35 knot
gales early in the morning. a chance of snow after midnight. snow
may be heavy at times after midnight. waves 3 to 5 feet subsiding
to 1 to 3 feet after midnight...then building to 6 to 9 feet
early in the morning. waves occasionally around 12 feet. 
.friday...east winds to 30 knots increasing to 35 knot gales late
in the morning...then decreasing to 20 to 25 knots in the
afternoon. gusts to 45 knot gales. snow in the morning...then
snow and rain in the afternoon. snow may be heavy at times in the
morning. waves 12 to 16 feet subsiding to 8 to 12 feet late in
the afternoon. waves occasionally around 20 feet. 
.friday night...north winds 20 to 25 knots increasing to 30 knots
by midnight...then becoming northwest 20 to 25 knots after
midnight. gusts to 35 knot gales. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.saturday...northwest winds 15 to 20 knots with gusts to around
30 knots decreasing to 5 to 10 knots. waves 8 to 12 feet
subsiding to 3 to 5 feet early in the afternoon. waves
occasionally around 15 feet. 
.saturday night...north winds 5 to 10 knots veering to the
southeast by midnight...then increasing to 10 to 15 knots after
midnight. waves 1 to 3 feet. 
.sunday...east winds 15 to 20 knots becoming northeast at 40 knot
gales with gusts to 45 knot gales. snow likely in the morning.
snow, rain...freezing rain and sleet late in the afternoon. snow
may be heavy at times. waves 4 to 6 feet building to 18 to
23 feet. waves occasionally around 28 feet. a gale warning may be
needed. 
.monday...north at 35 knot gales becoming west at 40 knot gales .
rain...snow and freezing rain early in the morning...then a
chance of snow and rain . waves 20 to 25 feet. waves occasionally
around 32 feet. 
.tuesday...northwest at 35 knot gales with gusts to 40 knot gales
becoming west 15 to 20 knots. a chance of snow early in the
morning. waves 14 to 18 feet subsiding to 8 to 12 feet . waves
occasionally around 23 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 122000
glflh 
expires:202603130400;;561453

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt thu mar 12 2026

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 brief ridge of high pressure, 30.10 inches, holds
over the great lakes through the evening. a strong low pressure
system, 29.10 inches, then enters northern lower michigan and
central lake huron tomorrow morning. this will bring widespread
gales to the great lakes. a gale warning is in effect. the low
quickly moves out friday night with high pressure building back
in on saturday.


lhz462>464-130400-
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-
400 pm edt thu mar 12 2026

...gale warning in effect from late tonight through late friday
night...

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


$$

fzus63 kdtx 122000
glflh 
expires:202603130400;;561452

open lake forecast for lake huron
national weather service detroit/pontiac mi
400 pm edt thu mar 12 2026

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 brief ridge of high pressure, 30.10 inches, holds
over the great lakes through the evening. a strong low pressure
system, 29.10 inches, then enters northern lower michigan and
central lake huron tomorrow morning. this will bring widespread
gales to the great lakes. a gale warning is in effect. the low
quickly moves out friday night with high pressure building back
in on saturday.


lhz363-130400-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
400 pm edt thu mar 12 2026

...gale warning in effect from late tonight through late friday
night...

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


$$

fzus63 kmkx 122041
glflm 
expires:202603130315;;563456

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
341 pm cdt thu mar 12 2026

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...

very active conditions are anticipated across the open waters from 
tonight through the beginning of next week. currently in the 
northern great plains, 29.2 inch low pressure will approach and 
cross the northern half of lake michigan tonight through friday 
morning. southerly winds will quickly increase as the low 
approaches tonight, ultimately veering westerly to northwesterly 
as it moves into ontario friday evening. widespread gale force 
gusts remain forecast across the northern half of the open waters,
where a gale warning remains in effect between 10 pm cdt tonight 
and 10 pm cdt friday evening. even stronger gusts are expected 
across the southern half of the open waters, where confidence has 
increased in widespread storm force gusts in this forecast. a 
storm warning has thus been issued for southern lake michigan 
between 10 pm cdt tonight and 10 pm cdt friday evening. it's 
possible that winds could decrease below storm thresholds prior to
the current 10 pm cdt friday expiration of the storm warning. if 
necessary, any early cancellations will be handled as winds 
decrease friday evening. areas of rain and snow will accompany 
passing low pressure tonight. areas of light to occasionally 
moderate freezing spray are possible over northern lake michigan 
friday afternoon.

winds will taper away from headline thresholds later friday night 
through saturday as 30.2 inch high pressure builds into the 
northern great plains & ultimately crosses the open waters. east- 
northeast winds will steadily increase saturday night through 
sunday as a second area of 29.4 inch low pressure forms in the 
central great plains. the low will progress over or just south of 
the southern lake michigan sunday night as it deepens toward 29.1
inches, resulting in a northerly wind shift. winds will shift out
of the northwest monday as the low continues into ontario. expect
another prolonged period of gale, if not storm force gusts across
all of the open waters as the low approaches & shifts east of 
lake michigan early sunday morning through monday, with headlines 
becoming necessary within the next 12-24 hours. prolonged snow is 
expected saturday night through monday, some of which could be 
heavy. sleet or freezing rain could mix in with snow over southern
lake michigan saturday night into sunday. freezing spray 
potential will increase monday behind the departing low, with 
areas of moderate to heavy freezing spray possible. trends will be
monitored in coming forecasts for potential headlines. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-130315-
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-
341 pm cdt thu mar 12 2026

sheboygan wi to pentwater mi south...

...storm warning in effect from 10 pm cdt this evening through
friday evening...

.tonight...south winds to 30 kt becoming southwest storm force
winds to 50 kt. chance of snow and slight chance of rain this
evening, then chance of rain and slight chance of snow overnight.
waves 3 to 5 ft building to 14 to 18 ft occasionally to 23 ft. 
.friday...southwest storm force winds to 50 kt becoming
northwest. slight chance of rain and snow in the morning, then
slight chance of snow in the afternoon. waves 14 to 18 ft
occasionally to 23 ft. 
.friday night...northwest gales to 45 kt becoming north 10 to
20 kt. waves 12 to 16 ft occasionally to 21 ft subsiding to 5 to
8 ft occasionally to 10 ft. 
.saturday...north winds 10 to 15 kt veering to southeast. waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.saturday night...east winds 10 to 20 kt increasing to 30 kt
overnight. chance of snow and rain in the evening, then snow and
rain overnight. waves 2 to 4 ft building to 6 to 9 ft
occasionally to 12 ft. 
.sunday...east gales to 35 kt increasing to gales to 45 kt in the
afternoon. rain and snow. waves 12 to 16 ft occasionally to 21 ft
building to 15 to 20 ft occasionally to 26 ft. 
.sunday night...north storm force winds to 50 kt. freezing spray.
rain and snow. waves 25 to 30 ft occasionally to 39 ft. 
.monday...northwest storm force winds to 50 kt. freezing spray.
snow. waves 25 to 30 ft occasionally to 39 ft. 
.tuesday...northwest gales to 35 kt becoming west 15 to 25 kt.
heavy freezing spray. waves 12 to 16 ft occasionally to 21 ft
subsiding to 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 122041
glflm 
expires:202603130315;;563455

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
341 pm cdt thu mar 12 2026

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...

very active conditions are anticipated across the open waters from 
tonight through the beginning of next week. currently in the 
northern great plains, 29.2 inch low pressure will approach and 
cross the northern half of lake michigan tonight through friday 
morning. southerly winds will quickly increase as the low 
approaches tonight, ultimately veering westerly to northwesterly 
as it moves into ontario friday evening. widespread gale force 
gusts remain forecast across the northern half of the open waters,
where a gale warning remains in effect between 10 pm cdt tonight 
and 10 pm cdt friday evening. even stronger gusts are expected 
across the southern half of the open waters, where confidence has 
increased in widespread storm force gusts in this forecast. a 
storm warning has thus been issued for southern lake michigan 
between 10 pm cdt tonight and 10 pm cdt friday evening. it's 
possible that winds could decrease below storm thresholds prior to
the current 10 pm cdt friday expiration of the storm warning. if 
necessary, any early cancellations will be handled as winds 
decrease friday evening. areas of rain and snow will accompany 
passing low pressure tonight. areas of light to occasionally 
moderate freezing spray are possible over northern lake michigan 
friday afternoon.

winds will taper away from headline thresholds later friday night 
through saturday as 30.2 inch high pressure builds into the 
northern great plains & ultimately crosses the open waters. east- 
northeast winds will steadily increase saturday night through 
sunday as a second area of 29.4 inch low pressure forms in the 
central great plains. the low will progress over or just south of 
the southern lake michigan sunday night as it deepens toward 29.1
inches, resulting in a northerly wind shift. winds will shift out
of the northwest monday as the low continues into ontario. expect
another prolonged period of gale, if not storm force gusts across
all of the open waters as the low approaches & shifts east of 
lake michigan early sunday morning through monday, with headlines 
becoming necessary within the next 12-24 hours. prolonged snow is 
expected saturday night through monday, some of which could be 
heavy. sleet or freezing rain could mix in with snow over southern
lake michigan saturday night into sunday. freezing spray 
potential will increase monday behind the departing low, with 
areas of moderate to heavy freezing spray possible. trends will be
monitored in coming forecasts for potential headlines. 


lmz261-362-364-366-563-565-567-868-130315-
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-
341 pm cdt thu mar 12 2026

sheboygan wi to pentwater mi north...

...gale warning in effect from 10 pm cdt this evening through
friday evening...

.tonight...south winds to 30 kt increasing to gale force winds of
45 kt. slight chance of rain and snow this evening, then snow and
slight chance of rain overnight. waves 3 to 5 ft building to 14 
to 18 ft occasionally to 23 ft. 
.friday...south gales to 40 kt veering to northwest gales to
45 kt. chance of rain and snow in the morning, then chance of
snow and rain in the afternoon. waves 12 to 16 ft occasionally to
21 ft. 
.friday night...northwest gales to 40 kt diminishing to 10 to
20 kt. waves 12 to 16 ft occasionally to 21 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday...northwest winds 10 to 20 kt backing to southwest 5 to
10 kt in the afternoon. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.saturday night...southeast winds 10 to 15 kt becoming east to
30 kt overnight. chance of snow. waves 1 to 3 ft building to 5 to
8 ft occasionally to 10 ft. 
.sunday...east gales to 35 kt becoming northeast gales to 45 kt
in the afternoon. visibility one quarter mile or less at times.
snow. waves 10 to 14 ft occasionally to 18 ft building to 15 to
20 ft occasionally to 26 ft. 
.sunday night...northeast storm force winds to 50 kt becoming
north. snow. visibility one quarter mile or less at times. waves
25 to 30 ft occasionally to 39 ft. 
.monday...north storm force winds to 50 kt becoming northwest.
snow. visibility one quarter mile or less at times. waves 25 to
30 ft occasionally to 39 ft subsiding to 20 to 25 ft occasionally
to 33 ft. 
.tuesday...northwest gales to 40 kt diminishing to 15 to 25 kt.
heavy freezing spray. waves 12 to 16 ft occasionally to 21 ft
subsiding to 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 122001
glfls 
expires:202603130800;;561488

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu mar 12 2026

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 29.1 inch low will move through northern wi late tonight reaching 
northern lake michigan by late morning, and lake huron by late 
afternoon. it then moves over new england at 29.5 inches by saturday 
morning. a 30.2 inch ridge will extend over lake superior from 
central canada on saturday afternoon. a 29.3 inch low developing 
over the central plains saturday night will track to near lake huron 
at 28.9 inches by monday morning. high pressure of 30.4 inches will 
overspread the northern plains on monday and move to lake superior 
by tuesday as the low departs into northern quebec. a 29.9 inch 
trough will move over lake superior on wednesday.



lsz266-130800-
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 edt thu mar 12 2026

...gale warning in effect from 11 pm edt this evening through
late friday night...

.late this afternoon...east winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...southeast winds 15 to 25 knots increasing to gales to
35 knots after midnight, then becoming east gales to 40 knots
late. freezing spray. a chance of snow through midnight. snow
likely after midnight. waves building to 10 to 14 feet
occasionally to 18 feet. 
.friday...east gales to 40 knots becoming northeast gales to
35 knots in the afternoon, then becoming north 20 to 30 knots
late. freezing spray. snow showers likely through early
afternoon. a chance of snow showers by mid afternoon. waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 7 to 10 feet occasionally to 13 feet. 
.friday night...north winds 20 to 30 knots diminishing to 10 to
20 knots. a slight chance of snow showers through midnight.
freezing spray. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.saturday...north winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves building to
1 to 3 feet. 
.sunday...east winds 20 to 30 knots becoming northeast gales to
40 knots by mid afternoon. a chance of snow showers through early
afternoon, then snow showers likely by mid afternoon. freezing
spray by mid afternoon. waves building to 10 to 14 feet
occasionally to 18 feet. 
.sunday night...northeast storm force winds to 55 knots becoming
north storm force winds to 60 knots after midnight. heavy
freezing spray. snow showers. waves building to 25 to 30 feet
occasionally to 38 feet. 
.monday...north hurricane force winds to 65 knots diminishing to
storm force winds to 60 knots. heavy freezing spray. snow showers
likely. a chance of snow showers. waves subsiding to 15 to
20 feet occasionally to 25 feet. 
.tuesday...northwest gales to 40 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202603130800;;561489

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu mar 12 2026

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 29.1 inch low will move through northern wi late tonight reaching 
northern lake michigan by late morning, and lake huron by late 
afternoon. it then moves over new england at 29.5 inches by saturday 
morning. a 30.2 inch ridge will extend over lake superior from 
central canada on saturday afternoon. a 29.3 inch low developing 
over the central plains saturday night will track to near lake huron 
at 28.9 inches by monday morning. high pressure of 30.4 inches will 
overspread the northern plains on monday and move to lake superior 
by tuesday as the low departs into northern quebec. a 29.9 inch 
trough will move over lake superior on wednesday.



lsz267-130800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt thu mar 12 2026

...gale warning in effect from 11 pm edt this evening through
late friday night...

.late this afternoon...north winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots increasing to 20 to
30 knots after midnight, then becoming east gales to 40 knots
late. freezing spray after midnight. a chance of snow after
midnight. waves building to 8 to 11 feet occasionally to 14 feet.
.friday...east gales to 45 knots becoming northeast gales to
35 knots in the afternoon, then becoming north 20 to 30 knots
late. freezing spray. snow showers. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday night...north winds 20 to 30 knots diminishing to 10 to
20 knots. a chance of snow showers through midnight. freezing
spray. waves subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...east winds 15 to 25 knots becoming northeast gales to
40 knots by mid afternoon. a chance of snow showers through early
afternoon, then snow showers likely by mid afternoon. freezing
spray by mid afternoon. waves building to 8 to 11 feet
occasionally to 14 feet. 
.sunday night...northeast storm force winds to 60 knots. heavy
freezing spray. snow showers. waves building to 20 to 25 feet
occasionally to 31 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow showers. waves subsiding to 12 to 17 feet
occasionally to 21 feet. 
.tuesday...northwest gales to 40 knots diminishing to 10 to
20 knots. heavy freezing spray. waves subsiding to 2 to 4 feet,
then building to 3 to 5 feet occasionally to 7 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202603130800;;561486

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu mar 12 2026

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 29.1 inch low will move through northern wi late tonight reaching 
northern lake michigan by late morning, and lake huron by late 
afternoon. it then moves over new england at 29.5 inches by saturday 
morning. a 30.2 inch ridge will extend over lake superior from 
central canada on saturday afternoon. a 29.3 inch low developing 
over the central plains saturday night will track to near lake huron 
at 28.9 inches by monday morning. high pressure of 30.4 inches will 
overspread the northern plains on monday and move to lake superior 
by tuesday as the low departs into northern quebec. a 29.9 inch 
trough will move over lake superior on wednesday.



lsz264-130800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt thu mar 12 2026

...gale warning in effect from 11 pm edt this evening through
late friday night...

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds 20 to 30 knots increasing to gales to
40 knots after midnight, then backing east late. freezing spray.
a chance of snow through midnight. snow likely after midnight.
waves building to 10 to 14 feet occasionally to 18 feet. 
.friday...northeast gales to 35 knots diminishing to 20 to
30 knots in the afternoon, then becoming north 15 to 25 knots
late. freezing spray. a chance of snow showers. waves building to
11 to 15 feet occasionally to 19 feet, then subsiding to 5 to
8 feet occasionally to 10 feet. 
.friday night...north winds 15 to 25 knots diminishing to 5 to
15 knots. freezing spray through midnight. waves subsiding to
1 to 3 feet. 
.saturday...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.saturday night...south winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 15 to 25 knots increasing to gales to
40 knots by mid afternoon. freezing spray. a chance of snow
showers. waves building to 10 to 14 feet occasionally to 18 feet.
.sunday night...northeast storm force winds to 55 knots becoming
north storm force winds to 60 knots after midnight. heavy
freezing spray. a chance of snow showers. waves building to 20 to
25 feet occasionally to 31 feet. 
.monday...north hurricane force winds to 65 knots diminishing to
storm force winds to 55 knots. heavy freezing spray. a chance of
snow showers. waves subsiding to 9 to 12 feet occasionally to
15 feet. 
.tuesday...northwest gales to 35 knots becoming southwest 10 to
20 knots. heavy freezing spray. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202603130800;;561485

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu mar 12 2026

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 29.1 inch low will move through northern wi late tonight reaching 
northern lake michigan by late morning, and lake huron by late 
afternoon. it then moves over new england at 29.5 inches by saturday 
morning. a 30.2 inch ridge will extend over lake superior from 
central canada on saturday afternoon. a 29.3 inch low developing 
over the central plains saturday night will track to near lake huron 
at 28.9 inches by monday morning. high pressure of 30.4 inches will 
overspread the northern plains on monday and move to lake superior 
by tuesday as the low departs into northern quebec. a 29.9 inch 
trough will move over lake superior on wednesday.



lsz263-130800-
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 edt thu mar 12 2026

...gale warning in effect from 11 pm edt this evening through
friday afternoon...

.late this afternoon...southeast winds 10 to 20 knots. a slight
chance of snow showers. waves calm to 2 feet. 
.tonight...southeast gales to 35 knots becoming east gales to
45 knots after midnight. a chance of snow through midnight, then
snow after midnight. freezing spray after midnight. waves
building to 11 to 15 feet occasionally to 19 feet. 
.friday...northeast gales to 40 knots becoming north gales to
35 knots in the afternoon, then diminishing to 10 to 20 knots
late. freezing spray. a chance of snow showers. waves subsiding
to 4 to 7 feet occasionally to 9 feet. 
.friday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of snow showers through
midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots increasing to gales to
40 knots by mid afternoon. freezing spray. a chance of snow
showers. waves building to 10 to 14 feet occasionally to 18 feet.
.sunday night...north gales to 45 knots increasing to storm force
winds to 50 knots after midnight. heavy freezing spray. a chance
of snow showers. waves building to 17 to 22 feet occasionally to
28 feet. 
.monday...north storm force winds to 55 knots diminishing to
gales to 45 knots. heavy freezing spray. a chance of snow
showers. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.tuesday...northwest winds 20 to 30 knots becoming southwest
10 to 20 knots. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202603130800;;561484

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu mar 12 2026

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 29.1 inch low will move through northern wi late tonight reaching 
northern lake michigan by late morning, and lake huron by late 
afternoon. it then moves over new england at 29.5 inches by saturday 
morning. a 30.2 inch ridge will extend over lake superior from 
central canada on saturday afternoon. a 29.3 inch low developing 
over the central plains saturday night will track to near lake huron 
at 28.9 inches by monday morning. high pressure of 30.4 inches will 
overspread the northern plains on monday and move to lake superior 
by tuesday as the low departs into northern quebec. a 29.9 inch 
trough will move over lake superior on wednesday.



lsz162-130800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt thu mar 12 2026 /300 pm cdt thu mar 12 2026/

...gale warning in effect from 10 pm edt /9 pm cdt/ this evening
through friday morning...

.late this afternoon...east winds 15 to 25 knots. a slight chance
of snow showers. waves calm to 2 feet building to 2 to 4 feet. 
.tonight...east gales to 45 knots. snow. a slight chance of rain
after midnight. waves building to 12 to 17 feet occasionally to
21 feet. 
.friday...northeast gales to 40 knots becoming north 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. freezing spray through early afternoon. a chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves building to 2 to 4 feet. 
.sunday...northeast winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. freezing spray. a chance of snow
showers. waves building to 10 to 14 feet occasionally to 18 feet.
.sunday night...north gales to 45 knots. heavy freezing spray. a
chance of snow showers. waves building to 11 to 15 feet
occasionally to 19 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet. 
.monday...north gales to 45 knots becoming northwest gales to
35 knots. heavy freezing spray. waves subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 to 20 knots becoming southwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202603130800;;561487

open lake forecast for lake superior
national weather service marquette mi
400 pm edt thu mar 12 2026

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 29.1 inch low will move through northern wi late tonight reaching 
northern lake michigan by late morning, and lake huron by late 
afternoon. it then moves over new england at 29.5 inches by saturday 
morning. a 30.2 inch ridge will extend over lake superior from 
central canada on saturday afternoon. a 29.3 inch low developing 
over the central plains saturday night will track to near lake huron 
at 28.9 inches by monday morning. high pressure of 30.4 inches will 
overspread the northern plains on monday and move to lake superior 
by tuesday as the low departs into northern quebec. a 29.9 inch 
trough will move over lake superior on wednesday.



lsz265-130800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt thu mar 12 2026

...gale warning in effect from 11 pm edt this evening through
late friday night...

.late this afternoon...southeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southeast winds 15 to 25 knots increasing to gales to
40 knots after midnight, then becoming east gales to 45 knots
with a few storm force gusts to 50 knots possible late. freezing
spray. a chance of snow through midnight. snow after midnight.
waves building to 11 to 15 feet occasionally to 19 feet. 
.friday...east gales to 45 knots becoming northeast gales to
35 knots in the afternoon, then becoming north 20 to 30 knots
late. freezing spray. snow showers likely through early
afternoon. a chance of snow showers by mid afternoon. waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 7 to 10 feet occasionally to 13 feet. 
.friday night...north winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray through midnight. a slight chance of
snow showers through midnight. waves subsiding to 2 to 4 feet. 
.saturday...west winds 10 to 20 knots backing south by mid
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots. waves building to
1 to 3 feet. 
.sunday...east winds 20 to 30 knots becoming northeast gales to
40 knots by mid afternoon. freezing spray. a chance of snow
showers through early afternoon. snow showers likely by mid
afternoon. waves building to 11 to 15 feet occasionally to
19 feet. 
.sunday night...northeast storm force winds to 55 knots becoming
north storm force winds to 60 knots after midnight. heavy
freezing spray. snow showers likely. waves building to 25 to
30 feet occasionally to 38 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow showers likely. a chance of snow showers. waves
subsiding to 10 to 14 feet occasionally to 18 feet. 
.tuesday...northwest gales to 35 knots becoming southwest 10 to
20 knots. heavy freezing spray. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

$$