fzus63 kdtx 221936
glflh 
expires:202603230345;;127513

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm edt sun mar 22 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...high pressure, 30.30 inches, will move into the
northern great lakes monday. the high will become centered over
lower mi on late day monday at 30.50 inches before drifting east
of the region tuesday while a weakening cold front moves into the
northern great lakes.


lhz361-230345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
336 pm edt sun mar 22 2026

.tonight...north winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...north winds 10 to 15 knots backing to the northwest
late in the afternoon. waves 2 feet or less. 
.monday night...west winds 5 to 10 knots backing to the southwest
by midnight...then becoming south 10 to 15 knots after midnight.
waves 2 feet or less. 
.tuesday...southwest winds 15 to 20 knots becoming west 10 to
15 knots early in the afternoon. a chance of snow. waves 1 to
3 feet. 
.tuesday night...west winds 5 to 10 knots becoming southwest
10 to 15 knots after midnight. waves 2 feet or less. 
.wednesday...north winds 10 to 15 knots veering to the east. a
chance of snow late in the evening. waves 2 to 4 feet. 
.thursday...east winds 15 to 20 knots veering to the west early
in the evening...then becoming north 20 to 25 knots by midnight.
snow and rain likely. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.friday...north winds 20 to 25 knots decreasing to 10 to 15 knots
in the late morning and early afternoon...then becoming northwest
15 to 20 knots . waves 3 to 5 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 221936
glflh 
expires:202603230345;;127514

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm edt sun mar 22 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...high pressure, 30.30 inches, will move into the
northern great lakes monday. the high will become centered over
lower mi on late day monday at 30.50 inches before drifting east
of the region tuesday while a weakening cold front moves into the
northern great lakes.


lhz362-363-230345-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
336 pm edt sun mar 22 2026

.tonight...north winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.monday...north winds 10 to 15 knots becoming northwest 15 to
20 knots in the late morning and afternoon. waves 3 to 5 feet. 
.monday night...northwest winds 10 to 15 knots becoming west 5 to
10 knots by midnight...then backing to the southwest after
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight. 
.tuesday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots early in the afternoon. waves 4 to 6 feet. 
.tuesday night...southwest winds 10 to 15 knots. waves 2 to
4 feet. waves occasionally around 8 feet. 
.wednesday...south winds 10 to 15 knots backing to the east.
waves 3 to 5 feet. 
.thursday...southeast winds 15 to 20 knots veering to the
southwest early in the evening...then becoming north to 30 knots
by midnight. a chance of rain and snow in the late morning and
early afternoon. waves 5 to 7 feet building to 10 to 14 feet by
midnight. waves occasionally around 18 feet. 
.friday...north winds to 30 knots becoming northwest 15 to
20 knots. waves 10 to 14 feet subsiding to 5 to 7 feet . waves
occasionally around 18 feet. 


$$

fzus63 kdtx 221936
glflh 
expires:202603230345;;127515

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm edt sun mar 22 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...high pressure, 30.30 inches, will move into the
northern great lakes monday. the high will become centered over
lower mi on late day monday at 30.50 inches before drifting east
of the region tuesday while a weakening cold front moves into the
northern great lakes.


lhz462>464-230345-
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-
336 pm edt sun mar 22 2026

.tonight...north winds 15 to 20 knots. waves 5 to 7 feet. waves
occasionally around 10 feet. 
.monday...north winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.monday night...north winds 10 to 15 knots decreasing to 5 to
10 knots by midnight...then veering to the northeast after
midnight. waves 3 to 5 feet subsiding to 1 to 3 feet after
midnight. 
.tuesday...southwest winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon. 
.tuesday night...southwest winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet. 
.wednesday...south winds 10 to 15 knots backing to the northeast
late in the afternoon...then veering to the east late in the
evening. waves 1 to 3 feet. 
.thursday...southeast winds 10 to 15 knots veering to the
southwest early in the evening...then becoming north to 30 knots
by midnight. a chance of rain. waves 3 to 5 feet building to 8 to
12 feet by midnight. waves occasionally around 15 feet. 
.friday...north winds to 30 knots decreasing to 10 to 15 knots.
waves 10 to 14 feet subsiding to 3 to 5 feet. waves occasionally
around 18 feet. 


$$

fzus63 kmkx 221934
glflm 
expires:202603230315;;127482

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
234 pm cdt sun mar 22 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.5 inches will continue east across the 
southern great lakes region this afternoon. as this low pushes 
out, the pressure gradient remains strong for a period into
tonight. gales continue to be regularly seen in the nearshore
areas. a gale warning remains through mid evening for the
southern 3rd of the open waters for gusts from 35 to 40 kts, with
a few isolated gusts to 45 kts possible.

high pressure around 30.4 inches will build into the great lakes 
region from canada tonight into monday bringing decreasing winds
with northerly gales falling later this evening. as this high 
exits tuesday and a weak front passes, winds may pick up a bit 
from the south. winds over the lake will remain largely from the
south through wednesday as broad low pressure approaches from 
the west. chances for precipitation on tuesday and again on 
wednesday though primarily for northern parts of the lake.


lmz261-362-364-366-563-565-567-868-230315-
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-
234 pm cdt sun mar 22 2026

sheboygan wi to pentwater mi north...

.tonight...north winds to 30 kt diminishing to 15 to 25 kt. waves
7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.monday...north winds 10 to 20 kt becoming northwest 10 to 15 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...south winds 10 to 15 kt becoming southwest to
30 kt. waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft. 
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.tuesday night...east winds 10 to 15 kt becoming northeast 10 to
20 kt. waves 2 to 4 ft. 
.wednesday...east winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...east winds 10 to 20 kt. waves 2 to 4 ft. 
.thursday...south winds 10 to 20 kt veering to northwest. chance
of rain and snow. waves 4 to 6 ft occasionally to 8 ft. 
.friday...north winds to 30 kt becoming northwest 10 to 20 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 5 to 8 ft
occasionally to 10 ft.  

$$

fzus63 kmkx 221934
glflm 
expires:202603230315;;127484

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
234 pm cdt sun mar 22 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.5 inches will continue east across the 
southern great lakes region this afternoon. as this low pushes 
out, the pressure gradient remains strong for a period into
tonight. gales continue to be regularly seen in the nearshore
areas. a gale warning remains through mid evening for the
southern 3rd of the open waters for gusts from 35 to 40 kts, with
a few isolated gusts to 45 kts possible.

high pressure around 30.4 inches will build into the great lakes 
region from canada tonight into monday bringing decreasing winds
with northerly gales falling later this evening. as this high 
exits tuesday and a weak front passes, winds may pick up a bit 
from the south. winds over the lake will remain largely from the
south through wednesday as broad low pressure approaches from 
the west. chances for precipitation on tuesday and again on 
wednesday though primarily for northern parts of the lake.


lmz669-870-230315-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
234 pm cdt sun mar 22 2026

sheboygan wi to pentwater mi south to port washington wi to
whitehall mi...

.tonight...north winds to 30 kt diminishing to 15 to 25 kt.
chance of flurries this evening. waves 8 to 12 ft occasionally to
16 ft subsiding to 7 to 10 ft occasionally to 13 ft. 
.monday...north winds 15 to 25 kt diminishing to 10 to 20 kt late
in the morning, then becoming north 10 to 20 kt early in the
afternoon becoming northeast 10 to 15 kt late. waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft. 
.monday night...east winds 5 to 10 kt becoming southeast 10 to
15 kt late in the evening, then becoming south 10 to 20 kt after
midnight increasing to 15 to 25 kt late. waves 1 to 3 ft building
to 2 to 4 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft. 
.tuesday night...south winds 10 to 15 kt becoming southeast.
waves 2 to 4 ft. 
.wednesday...east winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...east winds 10 to 20 kt becoming southeast.
waves 3 to 5 ft. 
.thursday...south winds 10 to 20 kt veering to northwest. chance
of rain. waves 4 to 6 ft occasionally to 8 ft. 
.friday...north winds to 30 kt diminishing to 15 to 25 kt. waves
10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft.  

$$

fzus63 kmkx 221934
glflm 
expires:202603230315;;127483

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
234 pm cdt sun mar 22 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

low pressure around 29.5 inches will continue east across the 
southern great lakes region this afternoon. as this low pushes 
out, the pressure gradient remains strong for a period into
tonight. gales continue to be regularly seen in the nearshore
areas. a gale warning remains through mid evening for the
southern 3rd of the open waters for gusts from 35 to 40 kts, with
a few isolated gusts to 45 kts possible.

high pressure around 30.4 inches will build into the great lakes 
region from canada tonight into monday bringing decreasing winds
with northerly gales falling later this evening. as this high 
exits tuesday and a weak front passes, winds may pick up a bit 
from the south. winds over the lake will remain largely from the
south through wednesday as broad low pressure approaches from 
the west. chances for precipitation on tuesday and again on 
wednesday though primarily for northern parts of the lake.


lmz080-671-673-675-777-779-872-874-876-878-230315-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
234 pm cdt sun mar 22 2026

port washington wi to whitehall mi south...

...gale warning in effect until 1 am cdt monday...

.tonight...north gales to 35 kt diminishing to 30 kt. waves 10 to
14 ft occasionally to 18 ft subsiding to 8 to 11 ft occasionally
to 14 ft. 
.monday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.monday night...northeast winds 10 to 15 kt veering to south
10 to 20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday night...south winds 10 to 15 kt. waves 2 to 4 ft. 
.wednesday...southeast winds 10 to 20 kt becoming east. waves
2 to 4 ft. 
.wednesday night...southeast winds 10 to 20 kt. waves 2 to 4 ft
building to 3 to 5 ft. 
.thursday...south winds 10 to 20 kt veering to west. chance of
rain. waves 4 to 6 ft occasionally to 8 ft. 
.friday...north winds to 30 kt diminishing to 15 to 25 kt. waves
12 to 16 ft occasionally to 21 ft subsiding to 8 to 11 ft
occasionally to 14 ft.  

$$

fzus63 kmqt 222001
glfls 
expires:202603230800;;128418

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 22 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 ridge builds to 30.4 inches over the lake tonight through monday. 
a clipper low around 29.9 inches tracks across northern ontario and 
briefly extends a 30.1 inch trough over lake superior tuesday 
morning. 30.3 inch ridging quickly builds back in on tuesday night 
and remains until wednesday morning. another clipper low around 29.7 
inches phases with a shortwave low lifting off of the northern 
rockies on wednesday, bringing troughing of at least 29.8 inches 
back across lake superior by thursday morning. this is followed by 
ridging of at least 30.4 inches friday.



lsz162-230800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sun mar 22 2026 /300 pm cdt sun mar 22 2026/

.late this afternoon...east winds 5 to 15 knots. waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet. 
.tonight...south winds 5 to 15 knots veering west after midnight.
waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing southwest in the
afternoon, then backing south late. waves calm to 2 feet. 
.monday night...south winds 10 to 20 knots veering west late. a
slight chance of rain showers, possibly mixed with snow after
midnight. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.tuesday...north winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. waves calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots backing northeast
after midnight. waves building to 2 to 4 feet. 
.wednesday...northeast winds 15 to 25 knots veering east by mid
afternoon. a chance of snow showers. waves 2 to 4 feet. 
.wednesday night...east winds 10 to 20 knots. a chance of snow
showers. a chance of rain showers after midnight. waves building
to 3 to 6 feet occasionally to 8 feet. 
.thursday...north winds 10 to 20 knots increasing to 15 to
25 knots. a chance of rain and snow showers. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.friday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202603230800;;128419

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 22 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 ridge builds to 30.4 inches over the lake tonight through monday. 
a clipper low around 29.9 inches tracks across northern ontario and 
briefly extends a 30.1 inch trough over lake superior tuesday 
morning. 30.3 inch ridging quickly builds back in on tuesday night 
and remains until wednesday morning. another clipper low around 29.7 
inches phases with a shortwave low lifting off of the northern 
rockies on wednesday, bringing troughing of at least 29.8 inches 
back across lake superior by thursday morning. this is followed by 
ridging of at least 30.4 inches friday.



lsz263-230800-
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 22 2026

.late this afternoon...northeast winds 5 to 15 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...north winds less than 10 knots becoming west 5 to
15 knots after midnight. a slight chance of snow showers through
midnight. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west in the
afternoon, then becoming southwest 10 to 20 knots late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight, then becoming west 15 to 25 knots
late. a slight chance of rain and snow showers after midnight.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.tuesday...north winds 5 to 15 knots veering east by mid
afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots backing northeast
after midnight. waves building to 2 to 4 feet. 
.wednesday...northeast winds 10 to 20 knots veering east by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.wednesday night...east winds 15 to 25 knots. a chance of snow
showers through midnight. a chance of rain showers. snow showers
likely after midnight. waves building to 4 to 7 feet occasionally
to 9 feet. 
.thursday...north winds 20 to 30 knots. a chance of snow showers,
possibly mixed with rain. freezing spray. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 5 to 8 feet
occasionally to 10 feet. 
.friday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet, then building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202603230800;;128420

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 22 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 ridge builds to 30.4 inches over the lake tonight through monday. 
a clipper low around 29.9 inches tracks across northern ontario and 
briefly extends a 30.1 inch trough over lake superior tuesday 
morning. 30.3 inch ridging quickly builds back in on tuesday night 
and remains until wednesday morning. another clipper low around 29.7 
inches phases with a shortwave low lifting off of the northern 
rockies on wednesday, bringing troughing of at least 29.8 inches 
back across lake superior by thursday morning. this is followed by 
ridging of at least 30.4 inches friday.



lsz264-230800-
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 22 2026

.late this afternoon...north winds 5 to 15 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...north winds 5 to 15 knots backing northwest after
midnight. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west in the
afternoon, then becoming southwest 10 to 20 knots late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight, then becoming west 15 to 25 knots
late. a slight chance of rain and snow showers after midnight.
waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...north winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight. waves building to 2 to 4 feet. 
.wednesday...east winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves 2 to 4 feet. 
.wednesday night...east winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. a chance of snow showers through
midnight, then snow showers, possibly mixed with rain after
midnight. waves subsiding to 1 to 3 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.thursday...north winds 20 to 30 knots increasing to gales to
35 knots. a chance of snow showers, possibly mixed with rain.
freezing spray. waves building to 4 to 8 feet occasionally to
10 feet. 
.friday...west winds 15 to 25 knots increasing to 20 to 30 knots.
waves subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202603230800;;128421

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 22 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 ridge builds to 30.4 inches over the lake tonight through monday. 
a clipper low around 29.9 inches tracks across northern ontario and 
briefly extends a 30.1 inch trough over lake superior tuesday 
morning. 30.3 inch ridging quickly builds back in on tuesday night 
and remains until wednesday morning. another clipper low around 29.7 
inches phases with a shortwave low lifting off of the northern 
rockies on wednesday, bringing troughing of at least 29.8 inches 
back across lake superior by thursday morning. this is followed by 
ridging of at least 30.4 inches friday.



lsz265-230800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sun mar 22 2026

.late this afternoon...north winds 10 to 20 knots. freezing
spray. waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.tonight...north winds 10 to 20 knots backing northwest after
midnight. a slight chance of snow showers after midnight. waves
subsiding to calm to 2 feet. 
.monday...west winds 10 to 20 knots. a slight chance of snow
showers through early afternoon. waves calm to 2 feet. 
.monday night...south winds 10 to 20 knots becoming southwest
20 to 30 knots after midnight, then veering west late. a slight
chance of snow showers, possibly mixed with rain after midnight.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.tuesday...northwest winds 15 to 25 knots becoming north 10 to
20 knots by mid afternoon. a slight chance of snow showers
through early afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...east 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...east winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.wednesday night...east winds 15 to 25 knots veering southeast
after midnight. a chance of snow showers. a chance of rain
showers after midnight. waves subsiding to 1 to 3 feet, then
building to 3 to 6 feet occasionally to 8 feet. 
.thursday...north winds 20 to 30 knots increasing to gales to
35 knots. a chance of snow showers, possibly mixed with rain.
freezing spray. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 20 to 30 knots backing west. waves
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202603230800;;128422

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 22 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 ridge builds to 30.4 inches over the lake tonight through monday. 
a clipper low around 29.9 inches tracks across northern ontario and 
briefly extends a 30.1 inch trough over lake superior tuesday 
morning. 30.3 inch ridging quickly builds back in on tuesday night 
and remains until wednesday morning. another clipper low around 29.7 
inches phases with a shortwave low lifting off of the northern 
rockies on wednesday, bringing troughing of at least 29.8 inches 
back across lake superior by thursday morning. this is followed by 
ridging of at least 30.4 inches friday.



lsz266-230800-
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 22 2026

.late this afternoon...north winds 15 to 25 knots. freezing
spray. waves 4 to 7 feet occasionally to 9 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then becoming northwest 10 to 20 knots
late. a slight chance of snow showers. waves subsiding to 1 to
3 feet. 
.monday...northwest winds 10 to 20 knots backing west late. a
slight chance of snow showers through early afternoon. waves
subsiding to calm to 2 feet. 
.monday night...south winds 15 to 25 knots increasing to 20 to
30 knots after midnight, then veering southwest late. a chance of
snow showers, possibly mixed with rain after midnight. waves
building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northwest winds 20 to 30 knots becoming north 10 to
20 knots by mid afternoon. a slight chance of snow showers
through early afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...east winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.wednesday...east winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.wednesday night...east winds 10 to 20 knots becoming southeast
20 to 30 knots after midnight. a chance of snow showers. a chance
of rain showers after midnight. waves subsiding to 1 to 3 feet,
then building to 4 to 7 feet occasionally to 9 feet. 
.thursday...north winds 20 to 30 knots increasing to gales to
35 knots. freezing spray. a chance of rain showers. a chance of
snow showers. waves building to 4 to 8 feet occasionally to
10 feet. 
.friday...northwest winds 20 to 30 knots backing west. freezing
spray. waves subsiding to 4 to 7 feet occasionally to 9 feet,
then building to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 222001
glfls 
expires:202603230800;;128423

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sun mar 22 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 ridge builds to 30.4 inches over the lake tonight through monday. 
a clipper low around 29.9 inches tracks across northern ontario and 
briefly extends a 30.1 inch trough over lake superior tuesday 
morning. 30.3 inch ridging quickly builds back in on tuesday night 
and remains until wednesday morning. another clipper low around 29.7 
inches phases with a shortwave low lifting off of the northern 
rockies on wednesday, bringing troughing of at least 29.8 inches 
back across lake superior by thursday morning. this is followed by 
ridging of at least 30.4 inches friday.



lsz267-230800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt sun mar 22 2026

.late this afternoon...north winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 10 to 20 knots becoming north 5 to
15 knots late. a slight chance of snow showers after midnight.
waves subsiding to calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west late. a slight
chance of snow showers through early afternoon. waves calm to
2 feet. 
.monday night...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight, then veering southwest late. a chance of
snow showers after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots becoming northwest 10 to
20 knots by mid afternoon. a chance of snow showers through early
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...northeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.wednesday...east winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...east winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. a chance of snow showers. a chance
of rain showers after midnight. waves subsiding to calm to
2 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.thursday...southeast winds 20 to 30 knots becoming north gales
to 35 knots. rain and snow showers likely. freezing spray. waves
building to 7 to 11 feet occasionally to 14 feet. 
.friday...northwest winds 15 to 25 knots becoming west 20 to
30 knots. freezing spray. waves subsiding to 4 to 7 feet
occasionally to 9 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

$$