fzus63 kdtx 220730
glflh 
expires:202603221530;;099225

open lake forecast for lake huron
national weather service detroit/pontiac mi
330 am 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...a cold front will move into the southern great lakes
this morning. high pressure, 30.30 inches, will move into the
northern great lakes this afternoon into tonight. the high will
become centered over lower mi on monday at 30.50 inches. the high
will drift east of the region tuesday while a weakening cold
front moves into the northern great lakes from the north.


lhz361-221530-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
330 am edt sun mar 22 2026

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

wave heights are for ice free areas.

$$

fzus63 kdtx 220730
glflh 
expires:202603221530;;099226

open lake forecast for lake huron
national weather service detroit/pontiac mi
330 am 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...a cold front will move into the southern great lakes
this morning. high pressure, 30.30 inches, will move into the
northern great lakes this afternoon into tonight. the high will
become centered over lower mi on monday at 30.50 inches. the high
will drift east of the region tuesday while a weakening cold
front moves into the northern great lakes from the north.


lhz362-363-221530-
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-
330 am edt sun mar 22 2026

.today...west winds 10 to 15 knots becoming north 15 to 20 knots
in the late morning and afternoon. a chance of rain in the
morning. waves 4 to 6 feet. waves occasionally around 8 feet. 
.tonight...north winds 15 to 20 knots decreasing to 10 to
15 knots early in the morning. waves 4 to 6 feet. 
.monday...north winds 10 to 15 knots. waves 3 to 5 feet. waves
occasionally around 8 feet. 
.monday night...north winds 10 to 15 knots becoming west 5 to
10 knots by midnight...then backing to the southwest after
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.tuesday...southwest winds 15 to 20 knots decreasing to 10 to
15 knots late in the afternoon...then veering to the west late in
the evening. waves 3 to 5 feet. 
.wednesday...north winds 15 to 20 knots becoming east 10 to
15 knots early in the evening...then increasing to 15 to 20 knots
by midnight. waves 3 to 5 feet. 
.thursday...southeast winds 15 to 20 knots veering to the
southwest with gusts to around 30 knots early in the evening...
then becoming northwest to 30 knots by midnight. a chance of rain
and snow. waves 6 to 9 feet building to 10 to 14 feet by
midnight. waves occasionally around 18 feet. 


$$

fzus63 kdtx 220730
glflh 
expires:202603221530;;099227

open lake forecast for lake huron
national weather service detroit/pontiac mi
330 am 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...a cold front will move into the southern great lakes
this morning. high pressure, 30.30 inches, will move into the
northern great lakes this afternoon into tonight. the high will
become centered over lower mi on monday at 30.50 inches. the high
will drift east of the region tuesday while a weakening cold
front moves into the northern great lakes from the north.


lhz462>464-221530-
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-
330 am edt sun mar 22 2026

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


$$

fzus63 kmkx 220746
glflm 
expires:202603221530;;099795

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
246 am 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 
lake early this morning. as this low passes, winds will shift to 
the north and northeast and become gusty this morning. a few, 
sporadic northerly gales are possible across the southern third of
the lake.

high pressure around 30.4 inches will build into the great lakes 
region from canada monday bringing decreasing winds. 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.


lmz261-362-364-366-563-565-567-868-221530-
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-
246 am cdt sun mar 22 2026

sheboygan wi to pentwater mi north...

.today...north winds to 30 kt. slight chance of rain this
morning. waves 6 to 9 ft occasionally to 12 ft. 
.tonight...north winds to 30 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...north winds 10 to 20 kt becoming northwest 10 to 15 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 3 to 5 ft. 
.tuesday...southwest winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 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 3 to 5 ft. 
.thursday...southwest winds 10 to 20 kt veering to west 15 to
25 kt. chance of rain and snow. waves 4 to 7 ft occasionally to
9 ft.  

$$

fzus63 kmkx 220746
glflm 
expires:202603221530;;099796

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
246 am 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 
lake early this morning. as this low passes, winds will shift to 
the north and northeast and become gusty this morning. a few, 
sporadic northerly gales are possible across the southern third of
the lake.

high pressure around 30.4 inches will build into the great lakes 
region from canada monday bringing decreasing winds. 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-221530-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
246 am cdt sun mar 22 2026

sheboygan wi to pentwater mi south...

.today...north winds to 30 kt. chance of sprinkles and slight
chance of rain. waves 5 to 8 ft occasionally to 10 ft building to
8 to 11 ft occasionally to 14 ft. 
.tonight...north winds to 30 kt diminishing to 15 to 25 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.monday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to 4 ft. 
.monday night...east winds 10 to 15 kt veering to south 10 to
20 kt. waves 2 to 4 ft. 
.tuesday...south winds 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...southeast winds 10 to 20 kt becoming east. waves
3 to 5 ft. 
.thursday...south winds 10 to 20 kt veering to northwest 15 to
25 kt. chance of rain. waves 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 220801
glfls 
expires:202603222000;;100175

open lake forecast for lake superior
national weather service marquette mi
400 am 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 30.4 inch ridge builds over the great lakes today 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.



lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sun mar 22 2026 /300 am cdt sun mar 22 2026/

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

$$

fzus63 kmqt 220801
glfls 
expires:202603222000;;100176

open lake forecast for lake superior
national weather service marquette mi
400 am 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 30.4 inch ridge builds over the great lakes today 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.



lsz263-222000-
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 am edt sun mar 22 2026

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

$$

fzus63 kmqt 220801
glfls 
expires:202603222000;;100177

open lake forecast for lake superior
national weather service marquette mi
400 am 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 30.4 inch ridge builds over the great lakes today 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.



lsz264-222000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sun mar 22 2026

.early this morning...northeast winds 20 to 30 knots. freezing
spray. waves 6 to 9 feet occasionally to 11 feet. 
.today...northeast winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon, then becoming north 10 to 20 knots
late. heavy freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...north winds 5 to 15 knots becoming northwest less than
10 knots after midnight, then increasing to 5 to 15 knots late. a
slight chance of snow showers after midnight. waves subsiding to
calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing southwest late.
waves calm to 2 feet. 
.monday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. a slight chance of snow showers
after midnight. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet. 
.tuesday...northwest winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...northeast winds 10 to 20 knots. freezing spray
after midnight. waves building to 4 to 7 feet occasionally to
9 feet. 
.wednesday...east winds 10 to 20 knots becoming southeast 20 to
30 knots. freezing spray. snow showers, possibly mixed with rain.
waves subsiding to 3 to 5 feet occasionally to 7 feet, then
building to 7 to 10 feet occasionally to 13 feet. 
.thursday...north gales to 35 knots. a chance of snow showers,
possibly mixed with rain. freezing spray. waves subsiding to 4 to
7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202603222000;;100178

open lake forecast for lake superior
national weather service marquette mi
400 am 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 30.4 inch ridge builds over the great lakes today 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.



lsz265-222000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sun mar 22 2026

.early this morning...north winds to 30 knots with a few gale
force gusts to 35 knots possible. freezing spray. waves 5 to
8 feet occasionally to 10 feet. 
.today...north winds 20 to 30 knots diminishing to 15 to 25 knots
late. freezing spray. waves building to 6 to 9 feet occasionally
to 11 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.
.tonight...north winds 10 to 20 knots backing west late. waves
subsiding to calm to 2 feet. 
.monday...northwest winds 10 to 20 knots backing west late. waves
calm to 2 feet. 
.monday night...south winds 15 to 25 knots becoming southwest
20 to 30 knots after midnight. a 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. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.tuesday night...northeast winds 15 to 25 knots. freezing spray
after midnight. waves building to 5 to 8 feet occasionally to
10 feet. 
.wednesday...east winds 20 to 30 knots veering southeast.
freezing spray. a chance of snow showers. a chance of rain
showers. waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.thursday...northwest gales to 35 knots veering north. a chance
of rain showers. a chance of snow showers. freezing spray. waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202603222000;;100179

open lake forecast for lake superior
national weather service marquette mi
400 am 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 30.4 inch ridge builds over the great lakes today 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.



lsz266-222000-
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 am edt sun mar 22 2026

.early this morning...north winds to 30 knots with a few gale
force gusts to 35 knots possible. freezing spray. waves 5 to
9 feet occasionally to 11 feet. 
.today...northeast winds to 30 knots with a few gale force gusts
to 35 knots possible becoming north 20 to 30 knots in the
afternoon, then diminishing to 15 to 25 knots late. freezing
spray. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing northwest late. a slight
chance of snow showers after midnight. 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 20 to 30 knots becoming southwest
gales to 35 knots after midnight. a chance of snow showers after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...northwest winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. a chance of snow showers, possibly
mixed with rain through early afternoon. waves subsiding to 2 to
4 feet. 
.tuesday night...north winds 15 to 25 knots veering northeast
after midnight. freezing spray after midnight. waves building to
5 to 8 feet occasionally to 10 feet. 
.wednesday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. freezing spray. a chance of snow showers. rain showers
likely. waves subsiding to 2 to 4 feet, then building to 7 to
10 feet occasionally to 13 feet. 
.thursday...northwest gales to 35 knots veering north. freezing
spray. a chance of rain showers. a chance of snow showers. waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 8 to 11 feet occasionally to 14 feet. 

$$

fzus63 kmqt 220801
glfls 
expires:202603222000;;100180

open lake forecast for lake superior
national weather service marquette mi
400 am 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 30.4 inch ridge builds over the great lakes today 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.



lsz267-222000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sun mar 22 2026

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

$$