fzus63 kdtx 130806 aaa
glflh 
expires:202603131615;;590191

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
406 am edt fri mar 13 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 this morning. this
will bring widespread gales to the great lakes. a gale warning is
in effect. the low quickly moves out tonight 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.


lhz363-131615-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
406 am edt fri mar 13 2026

...gale warning in effect through late tonight...

.today...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 45 knot gales decreasing to 35 knot gales
late in the afternoon. snow in the morning...then a chance of
snow and rain in the afternoon. snow may be heavy at times in the
morning. waves 8 to 12 feet. waves occasionally around 15 feet. 
.tonight...west winds to 30 knots veering to the northwest by
midnight...then decreasing to 20 to 25 knots early in the
morning. gusts to 40 knot gales. a chance of snow. waves 8 to
12 feet. waves occasionally around 14 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. a chance of snow after midnight. waves 1 to 3 feet
building to 2 to 4 feet after midnight. 
.sunday...east winds 15 to 20 knots increasing to 30 knots with
gusts to 40 knot gales. snow. freezing rain late in the morning.
rain. snow may be heavy at times in the morning. waves 5 to
7 feet building to 10 to 14 feet. waves occasionally around
18 feet. 
.monday...southeast winds to 30 knots with gusts to 45 knot gales
becoming west at 35 knot gales with storm force gusts to 50 knots
. rain with snow likely early in the morning...then rain likely
in the late morning and early afternoon. a chance of snow. waves
14 to 18 feet. waves occasionally around 23 feet. a gale warning
may be needed. 
.tuesday...northwest at 35 knot gales with gusts to 40 knot gales
decreasing to 15 to 20 knots. a chance of snow early in the
morning. waves 15 to 20 feet subsiding to 6 to 9 feet. waves
occasionally around 25 feet. 


$$

fzus63 kdtx 130806 aaa
glflh 
expires:202603131615;;590190

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
406 am edt fri mar 13 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 this morning. this
will bring widespread gales to the great lakes. a gale warning is
in effect. the low quickly moves out tonight 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.


lhz361-362-131615-
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-
406 am edt fri mar 13 2026

...gale warning in effect through late tonight...

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


$$

fzus63 kdtx 130806 aaa
glflh 
expires:202603131615;;590192

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
406 am edt fri mar 13 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 this morning. this
will bring widespread gales to the great lakes. a gale warning is
in effect. the low quickly moves out tonight 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>464-131615-
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-
406 am edt fri mar 13 2026

...gale warning in effect through late tonight...

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


$$

fzus63 kmkx 130736
glflm 
expires:202603131515;;588947

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
236 am cdt fri mar 13 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 through 
this morning. strong south winds will veer westerly to 
northwesterly as the low moves into ontario by this evening. 
widespread gale force gusts are expected across the northern half 
of the open waters, where a gale warning remains in effect until 
10 pm cdt tonight. even stronger storm force gusts are expected 
across the southern half of the open waters where a storm warning 
is in effect until 10 pm cdt tonight as well. areas of rain and 
snow will accompany passing low pressure this morning and stronger
gusty around these are possible. areas of light to occasionally 
moderate freezing spray are possible over northern lake michigan 
this afternoon.

winds will diminish later tonight through saturday as  high 
pressure around 30.2 inches builds into the northern great plains
and crosses the open waters. east-northeast winds will steadily 
increase saturday night through sunday as a second low pressure 
around 29.4 inches 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 and 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.


lmz261-362-364-366-563-565-567-868-131515-
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-
236 am cdt fri mar 13 2026

sheboygan wi to pentwater mi north...

...gale warning in effect through this evening...

.today...south gales to 45 kt backing to north storm force winds
to 50 kt. snow with a chance of rain. waves 14 to 18 ft
occasionally to 23 ft subsiding to 12 to 16 ft occasionally to
21 ft. 
.tonight...north gales to 40 kt becoming northwest 10 to 20 kt.
chance of snow in the evening. 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 in the evening, then snow
overnight. 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.  

wave forecast is for ice free areas

$$

fzus63 kmkx 130736
glflm 
expires:202603131515;;588948

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
236 am cdt fri mar 13 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 through 
this morning. strong south winds will veer westerly to 
northwesterly as the low moves into ontario by this evening. 
widespread gale force gusts are expected across the northern half 
of the open waters, where a gale warning remains in effect until 
10 pm cdt tonight. even stronger storm force gusts are expected 
across the southern half of the open waters where a storm warning 
is in effect until 10 pm cdt tonight as well. areas of rain and 
snow will accompany passing low pressure this morning and stronger
gusty around these are possible. areas of light to occasionally 
moderate freezing spray are possible over northern lake michigan 
this afternoon.

winds will diminish later tonight through saturday as  high 
pressure around 30.2 inches builds into the northern great plains
and crosses the open waters. east-northeast winds will steadily 
increase saturday night through sunday as a second low pressure 
around 29.4 inches 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 and 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-131515-
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-
236 am cdt fri mar 13 2026

sheboygan wi to pentwater mi south...

...storm warning in effect through this evening...

.today...southwest storm force winds to 50 kt becoming northwest.
chance of rain this morning, then chance of rain and snow this
afternoon. waves 14 to 18 ft occasionally to 23 ft.
.tonight...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. snow likely with a chance of rain in the evening, then
rain and snow 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. 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.  

wave forecast is for ice free areas

$$

fzus63 kmqt 130801
glfls 
expires:202603132000;;589694

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri mar 13 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 29.2 inch low will move through northern wi this morning, crossing 
northern lower michigan this afternoon and over lake huron by this 
evening. it then moves over new england at 29.6 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 lower michigan 
at 29.1 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 29.8 inch 
low will move over northern ontario on wednesday.



lsz265-132000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt fri mar 13 2026

...gale warning in effect through late tonight...

.early this morning...east gales to 45 knots. freezing spray.
snow. waves 10 to 14 feet occasionally to 18 feet building to
11 to 15 feet occasionally to 19 feet. 
.today...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 through early afternoon. a chance of
snow 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. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots late. freezing spray through midnight. a slight chance
of snow through midnight. waves subsiding to 2 to 4 feet. 
.saturday...west winds 5 to 15 knots backing south late. waves
subsiding to calm to 2 feet. 
.saturday night...south winds 10 to 20 knots backing southeast
after midnight. a slight chance of snow after midnight. waves
calm to 2 feet. 
.sunday...east winds 20 to 30 knots becoming northeast gales to
40 knots by mid afternoon. snow likely through early afternoon,
then snow 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 hurricane force winds to 65 knots after midnight. heavy
freezing spray. snow likely. 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 12 to
17 feet occasionally to 21 feet. 
.tuesday...northwest gales to 35 knots becoming south 15 to
25 knots. heavy freezing spray. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202603132000;;589695

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri mar 13 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 29.2 inch low will move through northern wi this morning, crossing 
northern lower michigan this afternoon and over lake huron by this 
evening. it then moves over new england at 29.6 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 lower michigan 
at 29.1 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 29.8 inch 
low will move over northern ontario on wednesday.



lsz266-132000-
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-
401 am edt fri mar 13 2026

...gale warning in effect through late tonight...

.early this morning...southeast gales to 40 knots. freezing
spray. snow. waves 9 to 12 feet occasionally to 15 feet building
to 10 to 14 feet occasionally to 18 feet. 
.today...east gales to 40 knots becoming north gales to 35 knots
late. freezing spray. snow through early afternoon. a chance of
snow 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. 
.tonight...north winds 20 to 30 knots diminishing to 10 to
20 knots. a slight chance of snow through midnight. freezing
spray. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.saturday...north winds 5 to 15 knots backing southwest in the
afternoon, then backing south late. waves subsiding to calm to
2 feet. 
.saturday night...south winds 10 to 20 knots backing southeast
after midnight. a slight chance of snow 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. snow likely through early afternoon,
then snow 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 60 knots becoming
north hurricane force winds to 65 knots after midnight. heavy
freezing spray. snow. waves building to 25 to 30 feet
occasionally to 38 feet. 
.monday...north hurricane force winds to 65 knots. heavy freezing
spray. snow showers. 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 becoming south 20 to
30 knots. heavy freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202603132000;;589696

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri mar 13 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 29.2 inch low will move through northern wi this morning, crossing 
northern lower michigan this afternoon and over lake huron by this 
evening. it then moves over new england at 29.6 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 lower michigan 
at 29.1 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 29.8 inch 
low will move over northern ontario on wednesday.



lsz267-132000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt fri mar 13 2026

...gale warning in effect through late tonight...

.early this morning...southeast gales to 35 knots. freezing
spray. snow likely. waves 6 to 9 feet occasionally to 11 feet
building to 8 to 11 feet occasionally to 14 feet. 
.today...east gales to 40 knots becoming northeast gales to
35 knots in the afternoon. freezing spray. snow. waves building
to 10 to 14 feet occasionally to 18 feet, then subsiding to 6 to
9 feet occasionally to 11 feet. 
.tonight...north winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray through midnight. a chance of snow
through midnight. waves subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots veering south in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a slight chance of snow 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. snow likely through early afternoon,
then snow 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 55 knots
increasing to hurricane force winds to 65 knots after midnight.
heavy freezing spray. snow. 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 60 knots. heavy freezing spray. snow
showers. waves subsiding to 15 to 20 feet occasionally to
25 feet. 
.tuesday...northwest gales to 35 knots becoming south 15 to
25 knots. heavy freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202603132000;;589693

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri mar 13 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 29.2 inch low will move through northern wi this morning, crossing 
northern lower michigan this afternoon and over lake huron by this 
evening. it then moves over new england at 29.6 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 lower michigan 
at 29.1 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 29.8 inch 
low will move over northern ontario on wednesday.



lsz264-132000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt fri mar 13 2026

...gale warning in effect through late tonight...

.early this morning...east gales to 35 knots. freezing spray. a
chance of snow. waves 9 to 12 feet occasionally to 15 feet
building to 10 to 14 feet occasionally to 18 feet. 
.today...east gales to 35 knots becoming northeast 20 to 30 knots
in the afternoon, then becoming north 15 to 25 knots late.
freezing spray. a chance of snow. waves building to 11 to 15 feet
occasionally to 19 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tonight...north winds 15 to 25 knots diminishing to 5 to
15 knots. freezing spray through midnight. waves subsiding to
1 to 3 feet. 
.saturday...north winds 5 to 15 knots backing southwest in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...south 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. a chance of snow. freezing spray by
mid afternoon. waves building to 9 to 12 feet occasionally to
15 feet. 
.sunday night...northeast storm force winds to 55 knots becoming
north hurricane force winds to 65 knots after midnight. heavy
freezing spray. a chance of snow. 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 60 knots. heavy freezing spray. a chance of
snow showers. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.tuesday...north gales to 35 knots becoming south 15 to 25 knots.
heavy freezing spray. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202603132000;;589692

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri mar 13 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 29.2 inch low will move through northern wi this morning, crossing 
northern lower michigan this afternoon and over lake huron by this 
evening. it then moves over new england at 29.6 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 lower michigan 
at 29.1 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 29.8 inch 
low will move over northern ontario on wednesday.



lsz263-132000-
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-
401 am edt fri mar 13 2026

...gale warning in effect until 2 pm edt this afternoon...

.early this morning...east gales to 40 knots. freezing spray.
snow. waves 10 to 14 feet occasionally to 18 feet building to
11 to 15 feet occasionally to 19 feet. 
.today...northeast gales to 40 knots becoming north gales to
35 knots in the afternoon, then diminishing to 15 to 25 knots
late. freezing spray through early afternoon. snow through early
afternoon, then a chance of snow by mid afternoon. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots late. 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 after
midnight. waves building to 1 to 3 feet. 
.sunday...northeast gales to 40 knots. freezing spray. a chance
of snow through early afternoon. snow likely by mid afternoon.
waves building to 10 to 14 feet occasionally to 18 feet. 
.sunday night...north gales to 45 knots increasing to storm force
winds to 55 knots after midnight. heavy freezing spray. a chance
of snow. waves building to 17 to 22 feet occasionally to 28 feet.
.monday...north storm force winds to 60 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...north winds 20 to 30 knots becoming south 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 

$$

fzus63 kmqt 130801
glfls 
expires:202603132000;;589691

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri mar 13 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 29.2 inch low will move through northern wi this morning, crossing 
northern lower michigan this afternoon and over lake huron by this 
evening. it then moves over new england at 29.6 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 lower michigan 
at 29.1 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 29.8 inch 
low will move over northern ontario on wednesday.



lsz162-132000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri mar 13 2026 /301 am cdt fri mar 13 2026/

...gale warning in effect until 11 am edt /10 am cdt/ this
morning...

.early this morning...east gales to 40 knots. snow. waves 12 to
17 feet occasionally to 21 feet. 
.today...northeast gales to 40 knots becoming north gales to
35 knots in the afternoon, then diminishing to 15 to 25 knots
late. snow through early afternoon, then a slight chance of snow
by mid afternoon. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.tonight...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 backing south late.
waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming northeast
15 to 25 knots after midnight. a slight chance of snow. waves
building to 2 to 4 feet. 
.sunday...northeast gales to 40 knots. a chance of snow. freezing
spray by mid afternoon. 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. waves building to 12 to 17 feet occasionally to 21 feet.
.monday...north storm force winds to 55 knots diminishing to
gales to 35 knots. heavy freezing spray. waves subsiding to 2 to
4 feet. 
.tuesday...southwest winds 10 to 20 knots backing south. a chance
of snow showers. waves subsiding to calm to 2 feet. 

$$