fzus63 kdtx 151345
glflh 
expires:202603152145;;717095

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


lhz361-362-152145-
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-
945 am edt sun mar 15 2026

...gale warning in effect through tuesday morning...

.rest of today...east winds to 30 knots with gusts to 35 knot
gales increasing to 35 knot gales with gusts to 45 knot gales in
the afternoon. freezing spray late in the morning. snow late in
the morning...then snow and a chance of rain in the afternoon.
snow may be heavy at times. waves 8 to 12 feet building to 12 to
16 feet in the afternoon. waves occasionally around 20 feet. 
.tonight...northeast winds to 30 knots with gusts to 45 knot
gales decreasing to 20 to 25 knots with gusts to 35 knot gales
early in the morning. rain...sleet and freezing rain in the
evening...then rain and freezing rain after midnight.
precipitation may be heavy at times. waves 12 to 16 feet. waves
occasionally around 20 feet. 
.monday...south winds 20 to 25 knots increasing to 30 knots in
the late morning and afternoon. gusts to 40 knot gales. a chance
of rain in the morning...then a chance of snow in the afternoon.
freezing spray in the afternoon. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.monday night...west at 35 knot gales veering to the northwest in
the late evening and overnight. gusts to 40 knot gales. a chance
of snow. heavy freezing spray. waves 12 to 16 feet. waves
occasionally around 19 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
late in the morning...then becoming west 15 to 20 knots late in
the afternoon decreasing to 10 to 15 knots late in the evening.
heavy freezing spray. waves 12 to 16 feet subsiding to 4 to
6 feet. waves occasionally around 20 feet. 
.wednesday...south winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 15 to 20 knots . a chance of
snow. freezing spray in the late morning and early afternoon.
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 west by
midnight. waves 3 to 5 feet. 


$$

fzus63 kdtx 151345
glflh 
expires:202603152145;;717096

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


lhz363-462>464-152145-
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-
945 am edt sun mar 15 2026

...gale warning in effect from 8 pm edt this evening through
tuesday morning...

.rest of today...east winds 20 to 30 knots with brief gusts to 35
knot gales. a chance of snow. waves 8 to 12 feet. waves 
occasionally around 15 feet. 
.tonight...southeast winds 20 to 25 knots becoming south to
30 knots by midnight...then decreasing to 20 to 25 knots early in
the morning. gusts to 40 knot gales. a chance of rain. waves
10 to 14 feet. waves occasionally around 18 feet. 
.monday...south winds 20 to 25 knots becoming southwest to
30 knots in the late morning and afternoon. gusts to 40 knot
gales. a chance of rain in the morning. 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. waves occasionally around 20 feet. a gale warning may be
needed. 
.tuesday...west winds to 30 knots with gusts to 35 knot gales
decreasing to 10 to 15 knots. heavy freezing spray. waves 12 to
16 feet subsiding to 3 to 5 feet. waves occasionally around
20 feet. 
.wednesday...southwest winds 15 to 20 knots becoming south 20 to
25 knots with gusts to around 30 knots in the late morning and
early afternoon...then decreasing to 15 to 20 knots . waves 4 to
6 feet. 
.thursday...south winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming south 5 to 10 knots
by midnight. waves 3 to 5 feet subsiding to 1 to 3 feet early in
the evening...then building to 2 to 4 feet by midnight. waves
occasionally around 8 feet. 


$$

fzus63 kmkx 151407
glflm 
expires:202603152130;;717924

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

no major changes to the synopsis this morning as forecast detail
remain on track.

deepening low pressure of 29.3 inches currently over northern
missouri, will swing northeastward through the rest of this 
morning into southern wisconsin by this afternoon, bringing 
easterly to southeasterly gales across the lake this morning into 
midday. as low pressure crosses southern lake michigan this 
evening, winds will briefly lower across the southern two thirds, 
while northerly storm force winds develop across the northern 
third. northerly storm force winds will spread southward through 
the middle third of lake michigan as low pressure deepens to 29.1 
inches over lower michigan this evening, while gales continue 
across the southern third. 

winds shift to northwesterly into monday morning, with storm 
force winds across the northern two thirds and gales across the 
southern third through monday evening. expect winds to slowly 
diminish as low pressure exits monday night into tuesday morning. 
heavy freezing spray is also expected to develop monday morning as
arctic air pushes southward through the lake, continuing through 
midday tuesday. winds then shift to southeasterly ahead of an 
approaching weak low around 29.7 inches tuesday afternoon into 
tuesday night.

heavy snow is expected across the northern half of the lake
throughout today, transitioning to sleet and freezing rain this
afternoon. a few thunderstorms are possible across the southern
half of the lake this afternoon. freezing rain and sleet will then
spread through the remainder of the lake overnight as
thunderstorms end, with a return to heavy snow into monday
morning. snow will taper off midday monday.


lmz669-671-870-872-152130-
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-
907 am 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...

.rest of today...east gales to 40 kt becoming southeast gales to
35 kt. chance of rain through mid morning, then rain this
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 11 ft occasionally to 14 ft. 
.tonight...north gales to 40 kt becoming northwest gales to
45 kt. rain and freezing rain in the evening, then rain, snow and
freezing rain overnight. waves 12 to 16 ft occasionally to 21 ft
building to 15 to 20 ft occasionally to 26 ft. 
.monday...northwest gales to 45 kt. freezing spray. snow. waves
15 to 20 ft occasionally to 26 ft. 
.monday night...northwest gales to 45 kt diminishing to gales to
35 kt overnight. 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 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming south to
30 kt. waves 3 to 5 ft building to 5 to 8 ft occasionally to
10 ft. 
.wednesday...south winds to 30 kt diminishing to 15 to 25 kt.
chance of snow. waves 7 to 10 ft occasionally to 13 ft. 
.thursday...west winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 151407
glflm 
expires:202603152130;;717923

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

no major changes to the synopsis this morning as forecast detail
remain on track.

deepening low pressure of 29.3 inches currently over northern
missouri, will swing northeastward through the rest of this 
morning into southern wisconsin by this afternoon, bringing 
easterly to southeasterly gales across the lake this morning into 
midday. as low pressure crosses southern lake michigan this 
evening, winds will briefly lower across the southern two thirds, 
while northerly storm force winds develop across the northern 
third. northerly storm force winds will spread southward through 
the middle third of lake michigan as low pressure deepens to 29.1 
inches over lower michigan this evening, while gales continue 
across the southern third. 

winds shift to northwesterly into monday morning, with storm 
force winds across the northern two thirds and gales across the 
southern third through monday evening. expect winds to slowly 
diminish as low pressure exits monday night into tuesday morning. 
heavy freezing spray is also expected to develop monday morning as
arctic air pushes southward through the lake, continuing through 
midday tuesday. winds then shift to southeasterly ahead of an 
approaching weak low around 29.7 inches tuesday afternoon into 
tuesday night.

heavy snow is expected across the northern half of the lake
throughout today, transitioning to sleet and freezing rain this
afternoon. a few thunderstorms are possible across the southern
half of the lake this afternoon. freezing rain and sleet will then
spread through the remainder of the lake overnight as
thunderstorms end, with a return to heavy snow into monday
morning. snow will taper off midday monday.


lmz261-362-364-366-563-565-567-868-152130-
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-
907 am 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...

.rest of today...east gales to 40 kt becoming northeast storm
force winds to 50 kt. snow and sleet with rain likely through mid
morning, then snow, rain, sleet and slight chance of freezing
rain this afternoon. visibility one quarter mile or less at times
this afternoon. waves 8 to 11 ft occasionally to 14 ft building
to 12 to 16 ft occasionally to 21 ft. 
.tonight...northeast storm force winds to 50 kt becoming north.
sleet, snow, rain and freezing rain in the evening, then snow,
sleet, freezing rain and rain overnight. visibility one quarter
mile or less at times in the evening. waves 15 to 20 ft
occasionally to 26 ft. 
.monday...north storm force winds to 50 kt becoming northwest.
visibility one quarter mile or less at times. snow. waves 15 to
20 ft occasionally to 26 ft. 
.monday night...northwest storm force winds to 50 kt diminishing
to gales to 40 kt overnight. chance of snow. visibility one
quarter mile or less at times in the evening. waves 14 to 18 ft
occasionally to 23 ft subsiding to 12 to 16 ft occasionally to
21 ft. 
.tuesday...northwest gales to 35 kt becoming west 15 to 25 kt in
the afternoon. heavy freezing spray in the morning. waves 8 to
12 ft occasionally to 16 ft subsiding to 4 to 7 ft occasionally
to 9 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming south to
30 kt. chance of snow. waves 2 to 4 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...south winds to 30 kt diminishing to 15 to 25 kt.
chance of snow. waves 7 to 10 ft occasionally to 13 ft. 
.thursday...west winds 10 to 20 kt becoming northwest 10 to
15 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 151401
glfls 
expires:202603152000;;717568

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from southeast iowa to over the michigan lower peninsula. the low 
then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. 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 low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, 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 29.6 inches.



lsz264-152000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...heavy freezing spray warning in effect from 2 pm edt this
afternoon through tuesday afternoon...
...storm warning in effect from 8 pm edt this evening through
late monday night...

.rest of today...east winds 15 to 25 knots increasing to gales to
35 knots in the afternoon, then becoming northeast gales to
45 knots late. freezing spray. snow likely. waves 3 to 6 feet
occasionally to 8 feet building to 11 to 15 feet occasionally to
19 feet. 
.tonight...northeast storm force winds to 60 knots backing north
late. heavy freezing spray. a chance of snow through midnight.
snow likely after midnight. waves building to 20 to 25 feet
occasionally to 31 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow likely through early afternoon. a chance of snow by
mid afternoon. waves subsiding to 15 to 20 feet occasionally to
25 feet. 
.monday night...north gales to 45 knots. heavy freezing spray.
waves subsiding to 6 to 9 feet occasionally to 11 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 increasing to 15 to
25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of snow
showers. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 151401
glfls 
expires:202603152000;;717569

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from southeast iowa to over the michigan lower peninsula. the low 
then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. 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 low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, 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 29.6 inches.



lsz265-152000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...heavy freezing spray warning in effect from 2 pm edt this
afternoon through tuesday afternoon...
...storm warning in effect from 8 pm edt this evening through
late monday night...

.rest of today...east gales to 45 knots becoming northeast storm
force winds to 50 knots late. freezing spray. snow. waves 3 to
6 feet occasionally to 8 feet building to 15 to 20 feet
occasionally to 25 feet. 
.tonight...northeast storm force winds to 60 knots backing north
late. heavy freezing spray. snow. waves building to 22 to 27 feet
occasionally to 34 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. snow through early afternoon. snow likely by mid
afternoon. waves subsiding to 17 to 22 feet occasionally to
28 feet. 
.monday night...north gales to 45 knots. a chance of snow through
midnight. heavy freezing spray. waves subsiding to 9 to 12 feet
occasionally to 15 feet. 
.tuesday...northwest winds 20 to 30 knots becoming west 10 to
20 knots by mid afternoon. heavy freezing spray 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...southwest winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of snow showers. a chance of rain showers.
waves subsiding to calm to 2 feet, then building 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 subsiding to
calm to 2 feet, then building to 3 to 5 feet occasionally to
7 feet. 

$$

fzus63 kmqt 151401
glfls 
expires:202603152000;;717570

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from southeast iowa to over the michigan lower peninsula. the low 
then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. 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 low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, 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 29.6 inches.



lsz266-152000-
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 am 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...

.rest of today...east gales to 40 knots becoming northeast gales
to 45 knots late. freezing spray. snow. waves 4 to 7 feet
occasionally to 9 feet building to 15 to 20 feet occasionally to
25 feet. 
.tonight...northeast storm force winds to 60 knots. heavy
freezing spray. snow. a slight chance of sleet after midnight.
waves building to 22 to 27 feet occasionally to 34 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.
snow. waves subsiding to 20 to 25 feet occasionally to 31 feet. 
.monday night...north storm force winds to 55 knots diminishing
to gales to 40 knots after midnight. heavy freezing spray. a
chance of snow. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots by mid afternoon. heavy freezing spray. waves subsiding
to 2 to 4 feet. 
.tuesday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight. freezing spray after midnight. a 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 becoming southwest 10 to
20 knots. freezing spray. a chance of snow showers. a chance of
rain showers. waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 151401
glfls 
expires:202603152000;;717571

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from southeast iowa to over the michigan lower peninsula. the low 
then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. 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 low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, 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 29.6 inches.



lsz267-152000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am 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...

.rest of today...east gales to 40 knots becoming northeast gales
to 45 knots late. freezing spray. snow. waves 3 to 6 feet
occasionally to 8 feet building to 9 to 12 feet occasionally to
15 feet. 
.tonight...northeast storm force winds to 60 knots. heavy
freezing spray. snow. a slight chance of sleet after midnight.
waves building to 15 to 20 feet occasionally to 25 feet. 
.monday...north storm force winds to 60 knots. heavy freezing
spray. a slight chance of sleet through early afternoon. snow.
waves subsiding to 12 to 17 feet occasionally to 21 feet, then
building to 15 to 20 feet occasionally to 25 feet. 
.monday night...north gales to 45 knots. heavy freezing spray. a
chance of snow. waves subsiding to 9 to 12 feet occasionally to
15 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots by mid afternoon. heavy freezing spray. waves subsiding
to 2 to 4 feet. 
.tuesday night...southwest winds 10 to 20 knots becoming south
15 to 25 knots after midnight. a chance of snow showers 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 becoming southwest 10 to
20 knots. freezing spray. a chance of snow showers. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 10 to 20 knots becoming south 15 to
25 knots. a chance of rain and snow showers. waves subsiding to
2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet.

$$

fzus63 kmqt 151401
glfls 
expires:202603152000;;717566

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from southeast iowa to over the michigan lower peninsula. the low 
then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. 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 low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, 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 29.6 inches.



lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sun mar 15 2026 /900 am 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...

.rest of today...northeast gales to 45 knots. freezing spray.
snow. waves 8 to 11 feet occasionally to 14 feet building to
12 to 17 feet occasionally to 21 feet. 
.tonight...north gales to 45 knots increasing to storm force
winds to 50 knots late. heavy freezing spray. a chance of snow.
waves building to 15 to 20 feet occasionally to 25 feet. 
.monday...north storm force winds to 50 knots diminishing to
gales to 45 knots in the afternoon. heavy freezing spray. a
slight chance of snow. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.monday night...north gales to 35 knots diminishing to 15 to
25 knots after midnight. heavy freezing spray through midnight.
waves subsiding to 1 to 3 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 15 to 25 knots veering southwest
after midnight. snow showers likely through midnight, then a
chance of snow showers after midnight. waves building to 2 to
4 feet. 
.wednesday...southwest winds 10 to 20 knots veering west. a
chance of rain and snow showers. waves subsiding to calm to
2 feet. 
.thursday...south winds 5 to 15 knots veering southwest. a chance
of rain and snow showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 151401
glfls 
expires:202603152000;;717567

open lake forecast for lake superior
national weather service marquette mi
1000 am 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...

throughout today, a 29.3 inch low deepens to 29.1 inches as it moves 
from southeast iowa to over the michigan lower peninsula. the low 
then slowly shifts over northern lake huron by monday afternoon, 
maintaining near 29.1 inches. 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 low shifts south of the great lakes basin 
through tuesday, extending weak 30.0 inch ridging over lake 
superior. wednesday morning, 29.5 inch low pressure over the 
canadian prairie will begin to push towards the lake, 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 29.6 inches.



lsz263-152000-
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 am edt sun mar 15 2026

...gale warning in effect until 8 pm edt this evening...
...heavy freezing spray warning in effect from 2 pm edt this
afternoon through tuesday afternoon...
...storm warning in effect from 8 pm edt this evening through
monday afternoon...

.rest of today...northeast gales to 45 knots. freezing spray.
snow. waves 6 to 9 feet occasionally to 11 feet building to 12 to
17 feet occasionally to 21 feet. 
.tonight...northeast gales to 45 knots becoming north 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 55 knots diminishing to
gales to 45 knots in the afternoon. heavy freezing spray. a
chance of snow. waves subsiding to 10 to 14 feet occasionally to
18 feet. 
.monday night...north gales to 45 knots. heavy freezing spray.
waves subsiding to 4 to 7 feet occasionally to 9 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 15 to 25 knots. a chance of snow
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of snow showers. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.thursday...southwest winds 5 to 15 knots becoming south 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
3 to 5 feet occasionally to 7 feet. 

$$