fzus63 kdtx 211347
glflh 
expires:202603212200;;059510

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 am edt sat mar 21 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, 30.10 inches, briefly fills in over the
great lakes this morning. a clipper tracks across the region
tonight, dragging a strong cold front through on sunday. breezy
north to northeast winds will develop behind this front. stronger
high pressure follows on monday with another cold front expected
tuesday.


lhz361-362-212200-
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-
947 am edt sat mar 21 2026

.rest of today...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the afternoon. a chance of snow in the
afternoon. waves 1 to 3 feet building to 2 to 4 feet late in the
afternoon. 
.tonight...southeast winds 10 to 15 knots backing to the
northeast early in the morning. a chance of snow showers in the
evening...then a chance of showers after midnight. waves 2 to
4 feet. 
.sunday...north winds 10 to 15 knots increasing to 15 to 20 knots
in the late morning and afternoon. waves 3 to 5 feet. 
.sunday night...north winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the morning...then backing to the west late in the
afternoon. waves 3 to 5 feet subsiding to 1 to 3 feet late in the
afternoon. 
.tuesday...southwest winds 15 to 20 knots becoming west 20 to
25 knots by midnight. a chance of snow early in the morning.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.wednesday...north winds 20 to 25 knots becoming northeast 15 to
20 knots in the late morning and early afternoon...then becoming
east 10 to 15 knots early in the evening becoming southeast 15 to
20 knots by midnight. a chance of rain and snow by midnight.
waves 6 to 9 feet. waves occasionally around 12 feet. 

wave heights are for ice free areas.

$$

fzus63 kdtx 211347
glflh 
expires:202603212200;;059511

open lake forecast for lake huron
national weather service detroit/pontiac mi
947 am edt sat mar 21 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, 30.10 inches, briefly fills in over the
great lakes this morning. a clipper tracks across the region
tonight, dragging a strong cold front through on sunday. breezy
north to northeast winds will develop behind this front. stronger
high pressure follows on monday with another cold front expected
tuesday.


lhz363-462>464-212200-
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-
947 am edt sat mar 21 2026

.rest of today...east winds 5 to 10 knots veering to the
southeast in the afternoon. waves 2 feet or less. 
.tonight...southeast winds 10 to 15 knots. a chance of showers
after midnight. waves 1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming 15 to 20 knots
early in the afternoon. a chance of rain and snow showers in the
morning...then a chance of showers in the afternoon. waves 2 to
4 feet building to 4 to 6 feet in the late morning and afternoon.
waves occasionally around 8 feet. 
.sunday night...north winds 15 to 20 knots. waves 5 to 7 feet.
waves occasionally around 10 feet. 
.monday...north winds 10 to 15 knots decreasing to 5 to 10 knots
late in the afternoon. waves 3 to 5 feet subsiding to 1 to 3 feet
late in the evening. 
.tuesday...south winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and early afternoon...then
decreasing to 10 to 15 knots early in the evening becoming west
15 to 20 knots by midnight. waves 3 to 5 feet building to 5 to
7 feet by midnight. waves occasionally around 10 feet. 
.wednesday...north winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and early afternoon...then becoming
northeast 10 to 15 knots early in the evening veering to the east
by midnight. waves 6 to 9 feet subsiding to 3 to 5 feet by
midnight. waves occasionally around 12 feet. 


$$

fzus63 kmkx 211355
glflm 
expires:202603212115;;059698

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 am cdt sat mar 21 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...

light winds early this morning will continue as high pressure
around 30.3 inches moves from james bay to michigan to the mid
atlantic. as this high moves east of the lake today, winds will
shift to southeast to south. 

meanwhile, low pressure around 29.5 inches will develop in 
eastern wyoming this morning and move east southeast toward 
central illinois/indiana by sunday. as this low passes south of 
the lake it is expected to deepen to around 29.4 inches. winds 
will shift to the north and northeast and become gusty later 
tonight into sunday morning. a few northerly gales are possible 
sunday, mainly over southern portions of the lake. high pressure 
around 30.4 inches should then bring decreasing winds for monday.


lmz261-362-364-366-563-565-567-868-212115-
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-
855 am cdt sat mar 21 2026

sheboygan wi to pentwater mi north...

.rest of today...southeast winds 10 to 15 kt increasing to 15 to
25 kt late this morning, then increasing to 30 kt early this
afternoon becoming south late. patchy fog. chance of sprinkles,
flurries and slight chance of light freezing rain through mid
morning, then chance of rain this afternoon. waves 1 ft or less
building to 4 to 6 ft occasionally to 8 ft. 
.tonight...south winds 15 to 25 kt veering to northwest 10 to
15 kt late in the evening, then becoming north 10 to 20 kt after
midnight increasing to 15 to 25 kt late. chance of rain and
slight chance of light freezing rain overnight. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.sunday...north winds to 30 kt. waves 4 to 6 ft occasionally to
8 ft building to 6 to 9 ft occasionally to 12 ft. 
.sunday night...north winds to 30 kt diminishing to 10 to 20 kt
overnight. waves 6 to 9 ft occasionally to 12 ft. 
.monday...north winds 10 to 20 kt becoming northwest 10 to 15 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.monday night...south winds 10 to 15 kt increasing to 15 to
25 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...east winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft.  

$$

fzus63 kmkx 211355
glflm 
expires:202603212115;;059699

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 am cdt sat mar 21 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...

light winds early this morning will continue as high pressure
around 30.3 inches moves from james bay to michigan to the mid
atlantic. as this high moves east of the lake today, winds will
shift to southeast to south. 

meanwhile, low pressure around 29.5 inches will develop in 
eastern wyoming this morning and move east southeast toward 
central illinois/indiana by sunday. as this low passes south of 
the lake it is expected to deepen to around 29.4 inches. winds 
will shift to the north and northeast and become gusty later 
tonight into sunday morning. a few northerly gales are possible 
sunday, mainly over southern portions of the lake. high pressure 
around 30.4 inches should then bring decreasing winds for monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-212115-
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-
855 am cdt sat mar 21 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds 10 to 15 kt increasing to 15 to
25 kt late this morning, then becoming south to 30 kt this
afternoon. chance of sprinkles through mid morning. waves 1 to
3 ft building to 3 to 5 ft. 
.tonight...southwest winds 15 to 25 kt veering to north 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...north winds to 30 kt increasing to gales to 35 kt.
waves 4 to 6 ft occasionally to 8 ft building to 8 to 11 ft
occasionally to 14 ft. 
.sunday night...north winds to 30 kt diminishing to 15 to 25 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.monday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.monday night...east winds 10 to 15 kt veering to south 10 to
20 kt. waves 2 to 4 ft. 
.tuesday...south winds 15 to 25 kt. waves 3 to 5 ft. 
.wednesday...east winds 15 to 25 kt becoming southeast 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.  

$$

fzus63 kmqt 211401
glfls 
expires:202603212000;;059916

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat mar 21 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 clipper around 29.6 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the 
clipper's cold front passes over the lake tonight, followed by a 
30.4 inch ridge building over the great lakes for sunday and monday. 
another clipper low, this one 29.9 inches, tracks across northern 
ontario and briefly extends a 30.1 inch trough over lake superior 
tuesday morning. 30.4 inch ridging quickly builds back in on tuesday 
night and remains until wednesday morning, until another clipper low 
around 29.7 inches brings troughing of at least 29.9 inches back 
across lake superior by thursday.



lsz162-212000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat mar 21 2026 /900 am cdt sat mar 21 2026/

.rest of today...east winds 10 to 20 knots backing northeast
late. a chance of rain showers. waves calm to 2 feet building to
1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of rain showers through
midnight. a slight chance of snow showers. waves building to 3 to
6 feet occasionally to 8 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then becoming east 5 to 15 knots late.
waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday night...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 by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 10 to 20 knots veering southwest
after midnight. a chance of rain showers, possibly mixed with
snow. waves building to 1 to 3 feet, then subsiding to calm to
2 feet. 
.tuesday...northeast winds 10 to 20 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.wednesday...east winds 10 to 20 knots increasing to 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. 

$$

fzus63 kmqt 211401
glfls 
expires:202603212000;;059917

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat mar 21 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 clipper around 29.6 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the 
clipper's cold front passes over the lake tonight, followed by a 
30.4 inch ridge building over the great lakes for sunday and monday. 
another clipper low, this one 29.9 inches, tracks across northern 
ontario and briefly extends a 30.1 inch trough over lake superior 
tuesday morning. 30.4 inch ridging quickly builds back in on tuesday 
night and remains until wednesday morning, until another clipper low 
around 29.7 inches brings troughing of at least 29.9 inches back 
across lake superior by thursday.



lsz263-212000-
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 sat mar 21 2026

.rest of today...southeast winds 10 to 20 knots backing east in
the afternoon. rain showers likely with pockets of snow showers
by late morning, then a chance of rain showers, possibly mixed
with snow by mid afternoon. waves 1 to 3 feet building to 3 to
5 feet occasionally to 7 feet. 
.tonight...northeast winds 15 to 25 knots. a slight chance of
rain showers through midnight. a slight chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. freezing spray through early afternoon. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday night...northeast winds 5 to 15 knots backing west after
midnight. waves subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.monday night...south winds 20 to 30 knots veering southwest
after midnight. a chance of rain showers, possibly mixed with
snow after midnight. waves building to 3 to 5 feet occasionally
to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...west winds 15 to 25 knots veering northeast. freezing
spray. waves subsiding to 1 to 3 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.wednesday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. 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. 

$$

fzus63 kmqt 211401
glfls 
expires:202603212000;;059918

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat mar 21 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 clipper around 29.6 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the 
clipper's cold front passes over the lake tonight, followed by a 
30.4 inch ridge building over the great lakes for sunday and monday. 
another clipper low, this one 29.9 inches, tracks across northern 
ontario and briefly extends a 30.1 inch trough over lake superior 
tuesday morning. 30.4 inch ridging quickly builds back in on tuesday 
night and remains until wednesday morning, until another clipper low 
around 29.7 inches brings troughing of at least 29.9 inches back 
across lake superior by thursday.



lsz264-212000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1000 am edt sat mar 21 2026

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

$$

fzus63 kmqt 211401
glfls 
expires:202603212000;;059919

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat mar 21 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 clipper around 29.6 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the 
clipper's cold front passes over the lake tonight, followed by a 
30.4 inch ridge building over the great lakes for sunday and monday. 
another clipper low, this one 29.9 inches, tracks across northern 
ontario and briefly extends a 30.1 inch trough over lake superior 
tuesday morning. 30.4 inch ridging quickly builds back in on tuesday 
night and remains until wednesday morning, until another clipper low 
around 29.7 inches brings troughing of at least 29.9 inches back 
across lake superior by thursday.



lsz265-212000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1000 am edt sat mar 21 2026

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

$$

fzus63 kmqt 211401
glfls 
expires:202603212000;;059920

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat mar 21 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 clipper around 29.6 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the 
clipper's cold front passes over the lake tonight, followed by a 
30.4 inch ridge building over the great lakes for sunday and monday. 
another clipper low, this one 29.9 inches, tracks across northern 
ontario and briefly extends a 30.1 inch trough over lake superior 
tuesday morning. 30.4 inch ridging quickly builds back in on tuesday 
night and remains until wednesday morning, until another clipper low 
around 29.7 inches brings troughing of at least 29.9 inches back 
across lake superior by thursday.



lsz266-212000-
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 sat mar 21 2026

.rest of today...southeast winds 15 to 25 knots. snow showers,
possibly mixed with rain. waves 1 to 3 feet building to 3 to
6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...east winds 15 to 25 knots becoming northeast 20 to
30 knots after midnight, then increasing to 30 knots with a few
gale force gusts to 35 knots possible late. a slight chance of
rain showers through midnight. a slight chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday...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 through early afternoon. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming west 10 to
20 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...south winds 20 to 30 knots increasing to gales to
35 knots after midnight. a chance of snow showers after midnight.
waves building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northwest gales to 35 knots becoming northeast 20 to
30 knots. a chance of snow showers. freezing spray. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
6 to 9 feet occasionally to 11 feet. 
.wednesday...southeast winds 15 to 25 knots becoming south gales
to 35 knots. freezing spray. a chance of snow showers. a chance
of rain showers. waves subsiding to 2 to 4 feet, then building to
7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 211401
glfls 
expires:202603212000;;059921

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat mar 21 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 clipper around 29.6 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the 
clipper's cold front passes over the lake tonight, followed by a 
30.4 inch ridge building over the great lakes for sunday and monday. 
another clipper low, this one 29.9 inches, tracks across northern 
ontario and briefly extends a 30.1 inch trough over lake superior 
tuesday morning. 30.4 inch ridging quickly builds back in on tuesday 
night and remains until wednesday morning, until another clipper low 
around 29.7 inches brings troughing of at least 29.9 inches back 
across lake superior by thursday.



lsz267-212000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1000 am edt sat mar 21 2026

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

$$