fzus63 kdtx 130137
glflh 
expires:202603130945;;574058

open lake forecast for lake huron
national weather service detroit/pontiac mi
937 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 strong low pressure system, 29.10 inches, moves over
northern lower michigan and central lake huron friday 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, 30.20 inches, briefly building back in on saturday.
a second strong low pressure system, 28.80 inches, moves across 
southern michigan and lake huron late sunday into monday. this 
brings additional potential for gust to gales.


lhz361-362-130945-
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-
937 pm edt thu mar 12 2026

...gale warning in effect from 4 am edt friday through late
friday night...

.rest of tonight...southwest winds 5 to 10 knots becoming
southeast 10 to 15 knots 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 1 to 3 feet building to 3 to 5 feet
early in the morning. 
.friday...east winds to 30 knots increasing to 35 knot gales late
in the morning...then decreasing to 30 knots early in the
afternoon becoming northeast 20 to 25 knots late in the
afternoon. gusts to 45 knot gales decreasing to 35 knot gales
late in the afternoon. snow in the morning...then snow and rain
in the afternoon. snow may be heavy at times in the morning.
waves 8 to 12 feet building to 12 to 16 feet in the late morning
and afternoon. waves occasionally around 20 feet. 
.friday night...north winds 20 to 25 knots backing to the
northwest after midnight. gusts to 35 knot gales. waves 10 to
14 feet. waves occasionally around 18 feet. 
.saturday...northwest winds 15 to 20 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
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 5 to 7 feet building to 15 to
20 feet. waves occasionally around 25 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 18 to 23 feet. waves occasionally
around 28 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. 


$$

fzus63 kdtx 130137
glflh 
expires:202603130945;;574059

open lake forecast for lake huron
national weather service detroit/pontiac mi
937 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 strong low pressure system, 29.10 inches, moves over
northern lower michigan and central lake huron friday 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, 30.20 inches, briefly building back in on saturday.
a second strong low pressure system, 28.80 inches, moves across 
southern michigan and lake huron late sunday into monday. this 
brings additional potential for gust to gales.


lhz363-130945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
937 pm edt thu mar 12 2026

...gale warning in effect from 4 am edt friday through late
friday night...

.rest of tonight...south winds 5 to 10 knots becoming southeast
15 to 20 knots with gusts to around 30 knots. a chance of snow
after midnight. snow may be heavy at times after midnight. waves
1 to 3 feet building to 3 to 5 feet early in the morning. 
.friday...southeast winds to 30 knots with gusts to 40 knot gales
increasing to 35 knot gales with gusts to 40 knot gales late in
the morning...then becoming south 20 to 25 knots with gusts to
35 knot gales early in the afternoon decreasing to 15 to 20 knots
with gusts to around 30 knots late in the afternoon. snow and
rain in the morning...then a chance of rain and snow in the
afternoon. waves 8 to 12 feet building to 10 to 14 feet in the
late morning and afternoon. 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 decreasing to 30 knots after
midnight. a chance of rain in the evening. waves 6 to 9 feet
building to 10 to 14 feet in the late evening and overnight.
waves occasionally around 18 feet. 
.saturday...northwest winds 15 to 20 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
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 5 to 7 feet
building to 14 to 18 feet. waves occasionally around 23 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
14 to 18 feet. waves occasionally around 23 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 8 to 12 feet .
waves occasionally around 23 feet. 


$$

fzus63 kdtx 130137
glflh 
expires:202603130945;;574060

open lake forecast for lake huron
national weather service detroit/pontiac mi
937 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 strong low pressure system, 29.10 inches, moves over
northern lower michigan and central lake huron friday 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, 30.20 inches, briefly building back in on saturday.
a second strong low pressure system, 28.80 inches, moves across 
southern michigan and lake huron late sunday into monday. this 
brings additional potential for gust to gales.


lhz462>464-130945-
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-
937 pm edt thu mar 12 2026

...gale warning in effect from 4 am edt friday through late
friday night...

.rest of tonight...southeast winds 5 to 10 knots increasing to
10 to 15 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 1 to 3 feet building to 2 to 4 feet
early in the morning. 
.friday...southeast winds 20 to 25 knots increasing to 30 knots
late in the morning...then becoming south 20 to 25 knots in the
afternoon. gusts to 40 knot gales. snow and rain in the morning...
then rain likely in the afternoon. waves 8 to 12 feet building to
10 to 14 feet early in the afternoon...then subsiding to 6 to
9 feet late in the afternoon. waves occasionally around 18 feet. 
.friday night...west winds 20 to 25 knots becoming northwest to
30 knots in the late evening and overnight. gusts to 40 knot
gales. a chance of rain and snow in the evening. waves 6 to
9 feet building to 10 to 14 feet in the late evening and
overnight. waves occasionally around 18 feet. 
.saturday...northwest winds 20 to 25 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 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 10 to 14 feet
late in the afternoon. waves occasionally around 18 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 10 to 14 feet subsiding to
5 to 7 feet by midnight. waves occasionally around 18 feet. 


$$

fzus63 kmkx 130212
glflm 
expires:202603130945;;575644

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
912 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...

low pressure around 29.2 inches in the northern plains will 
approach and cross the northern half of lake michigan tonight 
through friday morning. south winds quickly increase as the low 
approaches tonight then veer westerly to northwesterly as it 
moves into ontario friday evening. widespread gale force gusts 
are expected 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 storm force gusts are 
expected across the southern half of the open waters where a storm
warning is in effect. 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 diminish later friday night through saturday as 30.2 
inch high pressure builds into the northern great plains & 
crosses the open waters. east-northeast winds will steadily 
increase saturday night through sunday as a second low pressure
around 29.4 inch form 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 
gales, 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-130945-
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-
912 pm cdt thu mar 12 2026

sheboygan wi to pentwater mi south...

...storm warning in effect through friday evening...

.rest of tonight...south winds 15 to 25 kt increasing to storm
force winds to 50 kt. chance of rain and slight chance of snow
through early evening, then chance of rain 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. chance of rain 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 diminishing to 10 to
20 kt. waves 14 to 18 ft occasionally to 23 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 130212
glflm 
expires:202603130945;;575643

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
912 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...

low pressure around 29.2 inches in the northern plains will 
approach and cross the northern half of lake michigan tonight 
through friday morning. south winds quickly increase as the low 
approaches tonight then veer westerly to northwesterly as it 
moves into ontario friday evening. widespread gale force gusts 
are expected 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 storm force gusts are 
expected across the southern half of the open waters where a storm
warning is in effect. 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 diminish later friday night through saturday as 30.2 
inch high pressure builds into the northern great plains & 
crosses the open waters. east-northeast winds will steadily 
increase saturday night through sunday as a second low pressure
around 29.4 inch form 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 
gales, 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.


lmz261-362-364-366-563-565-567-868-130945-
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-
912 pm cdt thu mar 12 2026

sheboygan wi to pentwater mi north...

...gale warning in effect through friday evening...

.rest of tonight...south winds 15 to 25 kt becoming southeast
storm force winds to 50 kt. slight chance of rain and snow
through early evening, then snow and rain overnight. waves 3 to
5 ft building to 14 to 18 ft occasionally to 23 ft. 
.friday...south gales to 45 kt backing to north storm force winds
to 50 kt. snow with a chance of rain in the morning, then snow
and rain likely in the afternoon. waves 14 to 18 ft occasionally
to 23 ft subsiding to 12 to 16 ft occasionally to 21 ft. 
.friday night...north gales to 40 kt becoming northwest 10 to
20 kt. waves 12 to 16 ft occasionally to 21 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.saturday...northwest winds 10 to 15 kt backing to south 5 to
10 kt. waves 3 to 5 ft subsiding to 1 to 2 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 130201
glfls 
expires:202603130800;;574603

open lake forecast for lake superior
national weather service marquette mi
1000 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-
1000 pm edt thu mar 12 2026

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

.rest of 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 by midnight. snow likely after
midnight. waves 3 to 6 feet occasionally to 8 feet 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 9 to 12 feet occasionally to 15 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 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 2 to 4 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202603130800;;574604

open lake forecast for lake superior
national weather service marquette mi
1000 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-
1000 pm edt thu mar 12 2026

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

.rest of tonight...southeast winds 20 to 30 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 by midnight. snow after
midnight. waves 3 to 5 feet occasionally to 7 feet 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. a slight chance of
snow showers after midnight. waves calm to 2 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 12 to 17 feet occasionally to 21 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 130201
glfls 
expires:202603130800;;574605

open lake forecast for lake superior
national weather service marquette mi
1000 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-
1000 pm edt thu mar 12 2026

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

.rest of 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 by midnight. snow
likely after midnight. waves 2 to 4 feet 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. a slight chance of
snow showers after midnight. 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 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. 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 building to over 30 feet,
then subsiding to 17 to 22 feet occasionally to 28 feet. 
.tuesday...northwest gales to 40 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202603130800;;574606

open lake forecast for lake superior
national weather service marquette mi
1000 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-
1000 pm edt thu mar 12 2026

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

.rest of tonight...southeast winds 10 to 20 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 calm to 2 feet 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 9 to 12 feet
occasionally to 15 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 15 to 20 feet
occasionally to 25 feet. 
.tuesday...northwest gales to 40 knots diminishing to 10 to
20 knots. heavy freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202603130800;;574601

open lake forecast for lake superior
national weather service marquette mi
1000 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-
1000 pm edt thu mar 12 2026 /900 pm cdt thu mar 12 2026/

...gale warning in effect through friday morning...

.rest of tonight...east gales to 45 knots. snow. a slight chance
of rain after midnight. waves 6 to 9 feet occasionally to 11 feet
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. a slight chance of snow showers
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 12 to 17 feet
occasionally to 21 feet. 
.monday...north gales to 45 knots becoming northwest gales to
35 knots. heavy freezing spray. waves subsiding to 2 to 4 feet. 
.tuesday...northwest winds 10 to 20 knots becoming southwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 130201
glfls 
expires:202603130800;;574602

open lake forecast for lake superior
national weather service marquette mi
1000 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-
1000 pm edt thu mar 12 2026

...gale warning in effect through friday afternoon...

.rest of tonight...southeast gales to 35 knots becoming east
gales to 45 knots after midnight. freezing spray. snow. waves
4 to 7 feet occasionally to 9 feet 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. a slight chance of snow showers
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 6 to 9 feet occasionally to 11 feet. 
.tuesday...northwest winds 20 to 30 knots becoming southwest
10 to 20 knots. waves subsiding to calm to 2 feet, then building
to 2 to 4 feet. 

$$