fzus63 kdtx 160139
glflh 
expires:202603160945;;750440

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 pm edt sun mar 15 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, 28.90 inches, moves
across southern michigan and lake huron late tonight into monday.
this brings unsettled weather including gust to gales through the
early week period. gale warnings are in effect for the central
great lakes through tuesday morning.


lhz361-362-160945-
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-
939 pm edt sun mar 15 2026

...gale warning in effect through tuesday morning...
...heavy freezing spray warning in effect from monday afternoon
through tuesday afternoon...

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

wave heights are for ice free areas.

$$

fzus63 kdtx 160139
glflh 
expires:202603160945;;750441

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 pm edt sun mar 15 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, 28.90 inches, moves
across southern michigan and lake huron late tonight into monday.
this brings unsettled weather including gust to gales through the
early week period. gale warnings are in effect for the central
great lakes through tuesday morning.


lhz363-462>464-160945-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
939 pm edt sun mar 15 2026

...gale warning in effect through tuesday morning...
...heavy freezing spray warning in effect from monday afternoon
through tuesday afternoon...

.rest of tonight...east winds 20 to 25 knots becoming south to
30 knots early in the morning. gusts to 40 knot gales. a chance
of rain this evening...then rain after midnight. waves 10 to
14 feet. waves occasionally around 18 feet. 
.monday...south winds to 30 knots veering to the southwest late
in the afternoon. gusts to 35 knot gales. a chance of snow in the
afternoon. waves 10 to 14 feet. waves occasionally around
18 feet. 
.monday night...southwest winds to 30 knots becoming west at
35 knot gales in the late evening and overnight. gusts to 40 knot
gales. a chance of snow. heavy freezing spray. waves 12 to
16 feet building to 14 to 18 feet after midnight. waves
occasionally around 23 feet. a gale warning may be needed. 
.tuesday...west winds to 30 knots with gusts to 35 knot gales
decreasing to 15 to 20 knots. heavy freezing spray. waves 12 to
16 feet subsiding to 8 to 12 feet early in the afternoon. waves
occasionally around 20 feet. 
.tuesday night...west winds 15 to 20 knots decreasing to 10 to
15 knots in the late evening and overnight. freezing spray in the
evening. waves 5 to 7 feet subsiding to 2 to 4 feet after
midnight. waves occasionally around 10 feet. 
.wednesday...south winds 15 to 20 knots. a chance of snow late in
the evening. waves 4 to 6 feet. 
.thursday...southwest winds 10 to 15 knots becoming west 5 to
10 knots early in the evening...then becoming northwest 10 to
15 knots by midnight. a chance of snow and rain early in the
morning. waves 3 to 5 feet subsiding to 2 to 4 feet . waves
occasionally around 8 feet. 
.friday...west winds 10 to 15 knots backing to the south until
early evening...then increasing to 20 to 25 knots by midnight. a
chance of rain until early evening. waves 3 to 5 feet building to
6 to 9 feet by midnight. waves occasionally around 12 feet. 


$$

fzus63 kmkx 160204
glflm 
expires:202603160930;;751664

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
904 pm cdt sun mar 15 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 of 29.3 inches will lift into lower michigan tonight,
deepening to 29.0 inches and spreading northerly storm force 
winds through the northern two thirds of the open waters. gales 
continue across the southern third. northerly winds will continue
throughout tonight, bringing very cold air and freezing spray to 
the entire lake by early monday morning. visibility will also be 
heavily restricted over the lake as heavy snow moves over all of 
the lake tonight into monday morning. as low pressure exits into 
ontario monday evening, expect storm force winds to shift to 
northwest and diminish to gales. freezing spray will continue 
through midday tuesday, while gales continue into tuesday morning 
before diminishing.

northwest winds ease tuesday morning through tuesday afternoon as 
surface high pressure of 30.3 inches approaches the lake.


lmz669-671-870-872-160930-
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 whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
904 pm cdt sun mar 15 2026

sheboygan wi to pentwater mi south to north point light wi to
grand haven mi...

...storm warning in effect through monday evening...
...heavy freezing spray warning in effect from 4 am cdt monday
through tuesday morning...

.rest of tonight...north gales to 45 kt increasing to storm force
winds to 50 kt. rain, freezing rain and slight chance of snow
through early evening, then snow, rain and freezing rain
overnight. waves 12 to 16 ft occasionally to 21 ft building to
18 to 23 ft occasionally to 30 ft. 
.monday...northwest storm force winds to 50 kt diminishing to
gales to 45 kt. freezing spray in the morning, then heavy
freezing spray in the afternoon. snow in the morning, then chance
of snow in the afternoon. waves 18 to 23 ft occasionally to
30 ft. 
.monday night...northwest gales to 45 kt diminishing to gales to
35 kt. chance of snow in the evening. heavy freezing spray. waves
15 to 20 ft occasionally to 26 ft subsiding to 10 to 14 ft
occasionally to 18 ft. 
.tuesday...northwest winds to 30 kt becoming west 15 to 25 kt.
heavy freezing spray in the morning, then freezing spray in the
afternoon. waves 8 to 11 ft occasionally to 14 ft subsiding to
5 to 8 ft occasionally to 10 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming south to
30 kt overnight. waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft. 
.wednesday...south winds to 30 kt. chance of snow in the morning.
waves 7 to 10 ft occasionally to 13 ft. 
.wednesday night...south winds 10 to 20 kt becoming southwest.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.thursday...northwest winds 10 to 15 kt becoming north. waves
2 to 4 ft. 
.friday...south winds 10 to 20 kt becoming southwest. waves 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 160204
glflm 
expires:202603160930;;751663

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
904 pm cdt sun mar 15 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 of 29.3 inches will lift into lower michigan tonight,
deepening to 29.0 inches and spreading northerly storm force 
winds through the northern two thirds of the open waters. gales 
continue across the southern third. northerly winds will continue
throughout tonight, bringing very cold air and freezing spray to 
the entire lake by early monday morning. visibility will also be 
heavily restricted over the lake as heavy snow moves over all of 
the lake tonight into monday morning. as low pressure exits into 
ontario monday evening, expect storm force winds to shift to 
northwest and diminish to gales. freezing spray will continue 
through midday tuesday, while gales continue into tuesday morning 
before diminishing.

northwest winds ease tuesday morning through tuesday afternoon as 
surface high pressure of 30.3 inches approaches the lake.


lmz261-362-364-366-563-565-567-868-160930-
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-
904 pm cdt sun mar 15 2026

sheboygan wi to pentwater mi north...

...storm warning in effect through monday evening...
...heavy freezing spray warning in effect from 4 am cdt monday
through tuesday morning...

.rest of tonight...northeast storm force winds to 50 kt becoming
north storm force winds to 55 kt. freezing spray. snow, rain,
slight chance of freezing rain and light sleet through early
evening, then snow, sleet and slight chance of freezing rain
overnight. waves 14 to 18 ft occasionally to 23 ft building to
18 to 23 ft occasionally to 30 ft. 
.monday...north storm force winds to 55 kt becoming northwest
storm force winds to 50 kt. visibility one quarter mile or less
at times. snow and slight chance of freezing rain in the morning,
then snow in the afternoon. waves 18 to 23 ft occasionally to
30 ft. 
.monday night...northwest storm force winds to 50 kt diminishing
to gales to 35 kt. chance of snow. visibility one quarter mile or
less at times in the evening. waves 15 to 20 ft occasionally to
26 ft subsiding to 10 to 14 ft occasionally to 18 ft. 
.tuesday...northwest winds to 30 kt becoming west 10 to 20 kt in
the afternoon. heavy freezing spray in the morning. waves 7 to
10 ft occasionally to 13 ft subsiding to 4 to 7 ft occasionally
to 9 ft. 
.tuesday night...southwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.wednesday...south winds to 30 kt becoming southwest. chance of
snow. waves 6 to 9 ft occasionally to 12 ft. 
.wednesday night...southwest winds 10 to 20 kt. chance of rain
and snow. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.thursday...northwest winds 10 to 15 kt. waves 3 to 5 ft
subsiding to 1 to 3 ft. 
.friday...south winds 10 to 20 kt becoming southwest. chance of
snow. waves 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmqt 160201
glfls 
expires:202603160800;;751333

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 15 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 near chicago this evening deepens to 29.1 inches 
over lower michigan tonight, reaching northern lake huron at 29.0 
inches by monday afternoon. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this high shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. a 29.5 inch low over the canadian prairie wednesday 
morning will begin to push towards the lake on wednesday, weakening 
to 29.8 inches over the western end of the lake wednesday night. 
weak ridging of around 30.1 inches will be over the lake thursday 
evening ahead of the next clipper low moving over northern ontario 
by friday afternoon at around 29.7 inches.



lsz264-160800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 pm edt sun mar 15 2026

...storm warning in effect through late monday night...
...heavy freezing spray warning in effect through tuesday
afternoon...

.rest of tonight...northeast storm force winds to 55 knots
becoming north storm force winds to 60 knots late. heavy freezing
spray. a chance of snow. waves 15 to 20 feet occasionally to
25 feet building to 20 to 25 feet occasionally to 31 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow likely. waves subsiding to 17 to 22 feet occasionally
to 28 feet. 
.monday night...north storm force winds to 50 knots diminishing
to gales to 40 knots after midnight. heavy freezing spray. a
chance of snow showers. waves subsiding to 8 to 11 feet
occasionally to 14 feet. 
.tuesday...northwest winds 20 to 30 knots becoming west 5 to
15 knots by mid afternoon. heavy freezing spray through early
afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots. a slight chance of
snow showers after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.wednesday night...southwest winds 5 to 15 knots becoming
northwest 10 to 20 knots after midnight. a chance of snow
showers, possibly mixed with rain. waves subsiding to 1 to
3 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. a chance of snow showers, possibly mixed with rain.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.friday...south winds 15 to 25 knots becoming northwest gales to
40 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202603160800;;751334

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 15 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 near chicago this evening deepens to 29.1 inches 
over lower michigan tonight, reaching northern lake huron at 29.0 
inches by monday afternoon. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this high shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. a 29.5 inch low over the canadian prairie wednesday 
morning will begin to push towards the lake on wednesday, weakening 
to 29.8 inches over the western end of the lake wednesday night. 
weak ridging of around 30.1 inches will be over the lake thursday 
evening ahead of the next clipper low moving over northern ontario 
by friday afternoon at around 29.7 inches.



lsz265-160800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 pm edt sun mar 15 2026

...storm warning in effect through late monday night...
...heavy freezing spray warning in effect through tuesday
afternoon...

.rest of tonight...northeast storm force winds to 55 knots
becoming north storm force winds to 60 knots late. heavy freezing
spray. snow likely by midnight. snow after midnight. waves 17 to
22 feet occasionally to 28 feet building to 25 to 30 feet
occasionally to 38 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow. waves subsiding to 22 to 27 feet occasionally to
34 feet. 
.monday night...north storm force winds to 55 knots diminishing
to gales to 40 knots after midnight. heavy freezing spray. snow
showers through midnight. a chance of snow showers after
midnight. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.tuesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. heavy freezing spray through early
afternoon. a slight chance of snow showers through early
afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight. a slight chance of snow showers after
midnight. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.wednesday...south winds 20 to 30 knots becoming southwest 15 to
25 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...southwest winds 10 to 20 knots becoming west
15 to 25 knots after midnight. a chance of rain showers, possibly
mixed with snow. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. a chance of rain showers, possibly mixed with snow.
waves building to 1 to 3 feet. 
.friday...south winds 20 to 30 knots becoming northwest gales to
40 knots. a chance of rain and snow showers. waves building to
3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202603160800;;751335

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 15 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 near chicago this evening deepens to 29.1 inches 
over lower michigan tonight, reaching northern lake huron at 29.0 
inches by monday afternoon. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this high shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. a 29.5 inch low over the canadian prairie wednesday 
morning will begin to push towards the lake on wednesday, weakening 
to 29.8 inches over the western end of the lake wednesday night. 
weak ridging of around 30.1 inches will be over the lake thursday 
evening ahead of the next clipper low moving over northern ontario 
by friday afternoon at around 29.7 inches.



lsz266-160800-
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 sun mar 15 2026

...storm warning in effect through late monday night...
...heavy freezing spray warning in effect through tuesday
afternoon...

.rest of tonight...northeast storm force winds to 60 knots
becoming north storm force winds to 60 knots with a few hurricane
force gusts to 65 knots possible late. heavy freezing spray. snow
likely by midnight. snow after midnight. waves 17 to 22 feet
occasionally to 28 feet building to 25 to 30 feet occasionally to
38 feet. 
.monday...north storm force winds to 60 knots with a few
hurricane force gusts to 65 knots possible diminishing to storm
force winds to 60 knots late. heavy freezing spray. snow. waves
building to over 30 feet, then subsiding to 25 to 30 feet
occasionally to 38 feet. 
.monday night...north storm force winds to 55 knots diminishing
to gales to 45 knots after midnight. heavy freezing spray. snow
showers through midnight. a chance of snow showers after
midnight. waves subsiding to 12 to 17 feet occasionally to
21 feet. 
.tuesday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. a slight chance of snow showers
through early afternoon. heavy freezing spray. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday night...southwest winds 10 to 20 knots becoming south
20 to 30 knots after midnight. freezing spray after midnight. a
slight chance of snow showers after midnight. waves subsiding to
1 to 3 feet, then building to 4 to 7 feet occasionally to 9 feet.
.wednesday...south winds 20 to 30 knots veering southwest by mid
afternoon. freezing spray through early afternoon. a chance of
snow showers. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of snow showers, possibly mixed with
rain. waves subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 20 to
30 knots. a chance of rain and snow showers. waves building to
2 to 4 feet. 
.friday...south winds 20 to 30 knots becoming northwest gales to
40 knots. a chance of snow showers, possibly mixed with rain.
waves building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202603160800;;751336

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 15 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 near chicago this evening deepens to 29.1 inches 
over lower michigan tonight, reaching northern lake huron at 29.0 
inches by monday afternoon. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this high shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. a 29.5 inch low over the canadian prairie wednesday 
morning will begin to push towards the lake on wednesday, weakening 
to 29.8 inches over the western end of the lake wednesday night. 
weak ridging of around 30.1 inches will be over the lake thursday 
evening ahead of the next clipper low moving over northern ontario 
by friday afternoon at around 29.7 inches.



lsz267-160800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 pm edt sun mar 15 2026

...storm warning in effect through late monday night...
...heavy freezing spray warning in effect through tuesday
afternoon...

.rest of tonight...northeast storm force winds to 60 knots
increasing to storm force winds to 60 knots with a few hurricane
force gusts to 65 knots possible late. heavy freezing spray.
snow. a slight chance of sleet after midnight. waves 11 to
15 feet occasionally to 19 feet building to 17 to 22 feet
occasionally to 28 feet. 
.monday...north storm force winds to 60 knots with a few
hurricane force gusts to 65 knots possible diminishing to storm
force winds to 60 knots in the afternoon. heavy freezing spray. a
slight chance of sleet through early afternoon. snow. waves 17 to
22 feet occasionally to 28 feet. 
.monday night...north storm force winds to 55 knots diminishing
to gales to 45 knots after midnight. heavy freezing spray. snow
showers likely through midnight. a chance of snow showers after
midnight. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.tuesday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. a slight chance of snow showers
through early afternoon. heavy freezing spray. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.tuesday night...southwest winds 10 to 20 knots becoming south
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...south winds 20 to 30 knots. freezing spray through
early afternoon. a chance of snow showers. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...south winds 15 to 25 knots becoming west 10 to
20 knots after midnight. a chance of snow showers. waves
subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. a chance of rain and snow showers. waves building to
2 to 4 feet. 
.friday...south winds 20 to 30 knots becoming northwest gales to
40 knots. a chance of rain and snow showers. waves building to
6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202603160800;;751331

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 15 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 near chicago this evening deepens to 29.1 inches 
over lower michigan tonight, reaching northern lake huron at 29.0 
inches by monday afternoon. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this high shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. a 29.5 inch low over the canadian prairie wednesday 
morning will begin to push towards the lake on wednesday, weakening 
to 29.8 inches over the western end of the lake wednesday night. 
weak ridging of around 30.1 inches will be over the lake thursday 
evening ahead of the next clipper low moving over northern ontario 
by friday afternoon at around 29.7 inches.



lsz162-160800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt sun mar 15 2026 /900 pm cdt sun mar 15 2026/

...storm warning in effect through monday morning...
...heavy freezing spray warning in effect through late monday
night...

.rest of tonight...north gales to 45 knots. heavy freezing spray.
a slight chance of snow. waves 12 to 17 feet occasionally to
21 feet building to 15 to 20 feet occasionally to 25 feet. 
.monday...north gales to 45 knots. a slight chance of snow
through early afternoon. heavy freezing spray. waves subsiding to
8 to 11 feet occasionally to 14 feet. 
.monday night...north gales to 35 knots diminishing to 10 to
20 knots. heavy freezing spray through midnight. waves subsiding
to 2 to 4 feet. 
.tuesday...northwest winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.wednesday night...southwest winds 10 to 20 knots veering west
after midnight. a chance of rain showers, possibly mixed with
snow. waves subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.friday...west winds 15 to 25 knots becoming northwest 20 to
30 knots. waves 1 to 3 feet. 

$$

fzus63 kmqt 160201
glfls 
expires:202603160800;;751332

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun mar 15 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 near chicago this evening deepens to 29.1 inches 
over lower michigan tonight, reaching northern lake huron at 29.0 
inches by monday afternoon. by monday night, lake superior will be 
between the low as it shifts into quebec and a 30.3 inch high over 
the northern plains. this high shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. a 29.5 inch low over the canadian prairie wednesday 
morning will begin to push towards the lake on wednesday, weakening 
to 29.8 inches over the western end of the lake wednesday night. 
weak ridging of around 30.1 inches will be over the lake thursday 
evening ahead of the next clipper low moving over northern ontario 
by friday afternoon at around 29.7 inches.



lsz263-160800-
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 sun mar 15 2026

...storm warning in effect through monday afternoon...
...heavy freezing spray warning in effect through tuesday
afternoon...

.rest of tonight...north gales to 45 knots. heavy freezing spray.
snow likely by midnight. a chance of snow after midnight. waves
15 to 20 feet occasionally to 25 feet building to 17 to 22 feet
occasionally to 28 feet. 
.monday...north storm force winds to 55 knots diminishing to
gales to 45 knots late. heavy freezing spray. a chance of snow.
waves subsiding to 12 to 17 feet occasionally to 21 feet. 
.monday night...north gales to 45 knots. heavy freezing spray. a
slight chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...northwest winds 15 to 25 knots becoming southwest 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a slight chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.wednesday night...southwest winds 5 to 15 knots veering
northwest after midnight. a chance of rain showers, possibly
mixed with snow. waves subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots becoming south 15 to
25 knots. a chance of snow showers. waves building to 1 to
3 feet. 
.friday...west winds 15 to 25 knots becoming northwest 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

$$