fzus63 kdtx 151956
glflh 
expires:202603160400;;734358

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 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.


lhz361-362-160400-
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-
356 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...

.tonight...east at 35 knot gales becoming northeast to 30 knots
after midnight. gusts to 40 knot gales. rain...snow and sleet.
precipitation may be heavy at times. waves 14 to 18 feet. waves
occasionally around 23 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 151956
glflh 
expires:202603160400;;734359

open lake forecast for lake huron
national weather service detroit/pontiac mi
356 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>464-160400-
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-
356 pm edt sun mar 15 2026

...gale warning in effect from 8 pm edt this evening through
tuesday morning...
...heavy freezing spray warning in effect from monday afternoon
through tuesday afternoon...

.tonight...east winds 20 to 25 knots with gusts to around
30 knots becoming southeast to 30 knots with gusts to 40 knot
gales in the late evening and overnight. a chance of rain in the
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 151949
glflm 
expires:202603160315;;734288

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 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 approach the southern end of lake
michigan this afternoon, and pass over the southern end of the
lake by midnight cdt tonight. currently, northwest gales are
ongoing over the northern third of the lake, while a warm front
bisects the lake and causes weaker winds from midlake, southward.
a gale warning continues over all of the lake at this time.

as the surface low lifts north- northeast into lower michigan 
state, gales are expected to shift southward down the lake as 
winds become northwesterly over the more of the lake and fetch 
improves. the strong pressure gradient over the lake will allow
for very strong winds gusts over roughly the northern half of the
lake and storm force winds are anticipated from this evening into
monday afternoon. a storm warning is in effect over the northern
half of the lake. along with the high winds, colder air moving
over the lake will support heavy freezing spray over the whole
lake monday morning into tuesday, and a heavy freezing spray
warning has been issued for this time frame.

monday, northwest winds will turn northerly and northwesterly,
continuing to support storm force gusts into the afternoon. winds
should drop below storm force criteria late monday afternoon and
remain high end gales into monday evening. while the gale warning
drops off of the northern half of the lake monday night, this
segment may need to be extended, as models suggest gales may
continue over the northern half of the lake until the pre-dawn
hours of tuesday.

northwest winds then ease tuesday morning as the surface low pulls
way and surface high pressure of 30.3 inches approaches the lake.

additionally, visibility will be heavily restricted over the lake
as heavy snow moves over northern portions of lake michigan today,
and then all of the lake tonight into tomorrow morning.



lmz261-362-364-366-563-565-567-868-160315-
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-
249 pm cdt sun mar 15 2026

sheboygan wi to pentwater mi north...

...gale warning in effect until 7 pm cdt this evening...
...storm warning in effect from 7 pm cdt this evening through
monday evening...
...heavy freezing spray warning in effect from late tonight
through tuesday morning...

.tonight...northeast storm force winds to 50 kt becoming north.
snow, rain, slight chance of freezing rain and sleet this
evening, then snow, light sleet and freezing rain overnight.
visibility one quarter mile or less at times this evening. 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 50 kt becoming northwest.
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 40 kt. chance of snow in the evening. visibility one
quarter mile or less at times in the evening. waves 15 to 20 ft
occasionally to 26 ft subsiding to 12 to 16 ft occasionally to
21 ft. 
.tuesday...northwest gales to 35 kt becoming west 10 to 20 kt in
the afternoon. heavy freezing spray in the morning. waves 8 to
11 ft occasionally to 14 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 kmkx 151949
glflm 
expires:202603160315;;734289

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
249 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 approach the southern end of lake
michigan this afternoon, and pass over the southern end of the
lake by midnight cdt tonight. currently, northwest gales are
ongoing over the northern third of the lake, while a warm front
bisects the lake and causes weaker winds from midlake, southward.
a gale warning continues over all of the lake at this time.

as the surface low lifts north- northeast into lower michigan 
state, gales are expected to shift southward down the lake as 
winds become northwesterly over the more of the lake and fetch 
improves. the strong pressure gradient over the lake will allow
for very strong winds gusts over roughly the northern half of the
lake and storm force winds are anticipated from this evening into
monday afternoon. a storm warning is in effect over the northern
half of the lake. along with the high winds, colder air moving
over the lake will support heavy freezing spray over the whole
lake monday morning into tuesday, and a heavy freezing spray
warning has been issued for this time frame.

monday, northwest winds will turn northerly and northwesterly,
continuing to support storm force gusts into the afternoon. winds
should drop below storm force criteria late monday afternoon and
remain high end gales into monday evening. while the gale warning
drops off of the northern half of the lake monday night, this
segment may need to be extended, as models suggest gales may
continue over the northern half of the lake until the pre-dawn
hours of tuesday.

northwest winds then ease tuesday morning as the surface low pulls
way and surface high pressure of 30.3 inches approaches the lake.

additionally, visibility will be heavily restricted over the lake
as heavy snow moves over northern portions of lake michigan today,
and then all of the lake tonight into tomorrow morning.



lmz669-671-870-872-160315-
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-
249 pm cdt sun mar 15 2026

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

...gale warning in effect until 7 pm cdt this evening...
...storm warning in effect from 7 pm cdt this evening through
monday evening...
...heavy freezing spray warning in effect from late tonight
through tuesday morning...

.tonight...north gales to 40 kt becoming northwest gales to
45 kt. rain and slight chance of snow this evening, then snow
with rain likely with freezing rain overnight. waves 12 to 16 ft
occasionally to 21 ft building to 18 to 23 ft occasionally to
30 ft. 
.monday...northwest 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 12 to 16 ft
occasionally to 21 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 6 to 9 ft occasionally to 12 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 kmqt 152001
glfls 
expires:202603160800;;734553

open lake forecast for lake superior
national weather service marquette mi
400 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 29.3 inch low over northern illinois this afternoon 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-
400 pm edt sun mar 15 2026 /300 pm cdt sun mar 15 2026/

...gale warning in effect until 8 pm edt /7 pm cdt/ this
evening...
...heavy freezing spray warning in effect through late monday
night...
...storm warning in effect from 8 pm edt /7 pm cdt/ this evening
through monday morning...

.late this afternoon...northeast gales to 40 knots. freezing
spray. a chance of snow. waves 10 to 14 feet occasionally to
18 feet building to 12 to 17 feet occasionally to 21 feet. 
.tonight...north gales to 45 knots. heavy freezing spray. a
slight chance of snow. waves 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, then subsiding to
2 to 4 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 152001
glfls 
expires:202603160800;;734554

open lake forecast for lake superior
national weather service marquette mi
400 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 29.3 inch low over northern illinois this afternoon 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-
400 pm edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...heavy freezing spray warning in effect through tuesday
afternoon...
...storm warning in effect from 8 pm edt this evening through
monday afternoon...

.late this afternoon...northeast gales to 40 knots. freezing
spray. snow likely. waves 10 to 14 feet occasionally to 18 feet
building to 12 to 17 feet occasionally to 21 feet. 
.tonight...northeast gales to 45 knots backing north 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 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. 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. 

$$

fzus63 kmqt 152001
glfls 
expires:202603160800;;734555

open lake forecast for lake superior
national weather service marquette mi
400 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 29.3 inch low over northern illinois this afternoon 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-
400 pm edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...heavy freezing spray warning in effect through tuesday
afternoon...
...storm warning in effect from 8 pm edt this evening through
late monday night...

.late this afternoon...northeast gales to 45 knots. freezing
spray. snow likely. waves 9 to 12 feet occasionally to 15 feet
building to 10 to 14 feet occasionally to 18 feet. 
.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 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 9 to 12 feet
occasionally to 15 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. 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 152001
glfls 
expires:202603160800;;734556

open lake forecast for lake superior
national weather service marquette mi
400 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 29.3 inch low over northern illinois this afternoon 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-
400 pm edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...heavy freezing spray warning in effect through tuesday
afternoon...
...storm warning in effect from 8 pm edt this evening through
late monday night...

.late this afternoon...northeast storm force winds to 50 knots.
freezing spray. snow. waves 12 to 17 feet occasionally to 21 feet
building to 15 to 20 feet occasionally to 25 feet. 
.tonight...northeast storm force winds to 55 knots becoming north
storm force winds to 60 knots late. heavy freezing spray. snow
likely through midnight. snow after midnight. waves 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. 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 152001
glfls 
expires:202603160800;;734557

open lake forecast for lake superior
national weather service marquette mi
400 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 29.3 inch low over northern illinois this afternoon 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-
400 pm edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...storm warning in effect from 8 pm edt this evening through
late monday night...
...heavy freezing spray warning in effect from 8 pm edt this
evening through tuesday afternoon...

.late this afternoon...northeast gales to 45 knots. freezing
spray. snow. waves 12 to 17 feet occasionally to 21 feet building
to 15 to 20 feet occasionally to 25 feet. 
.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 through
midnight. snow after midnight. waves 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.
waves subsiding to 2 to 4 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 152001
glfls 
expires:202603160800;;734558

open lake forecast for lake superior
national weather service marquette mi
400 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 29.3 inch low over northern illinois this afternoon 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-
400 pm edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...storm warning in effect from 8 pm edt this evening through
late monday night...
...heavy freezing spray warning in effect from 8 pm edt this
evening through tuesday afternoon...

.late this afternoon...northeast gales to 45 knots. freezing
spray. snow. waves 8 to 11 feet occasionally to 14 feet building
to 9 to 12 feet occasionally to 15 feet. 
.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 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 2 to 4 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. 

$$