fzus63 kdtx 211936
glflh 
expires:202603220345;;073543

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm 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...a clipper, 29.50 inches, tracks across the region
tonight eventually 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 over northern lake huron.


lhz361-220345-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
336 pm edt sat mar 21 2026

.tonight...southeast winds 15 to 20 knots becoming east 10 to
15 knots after midnight...then becoming northeast 5 to 10 knots
early in the morning. a chance of rain and snow after midnight.
waves 3 to 5 feet. 
.sunday...north winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet in the afternoon. 
.sunday night...north winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...north winds 5 to 10 knots backing to the northwest
early 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...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the morning...then veering to the west late in
the afternoon becoming northwest 15 to 20 knots late in the
evening. a chance of snow. waves 2 to 4 feet subsiding to 1 to
3 feet late in the afternoon...then building to 2 to 4 feet late
in the evening. 
.wednesday...north winds 20 to 25 knots becoming east 10 to
15 knots until early evening...then becoming southeast 15 to
20 knots by midnight. a chance of snow and rain by midnight.
waves 3 to 5 feet. 
.thursday...southeast winds 20 to 25 knots veering to the
southwest in the late morning and early afternoon...then veering
to the northwest early in the evening increasing to 30 knots by
midnight. rain and snow 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 211936
glflh 
expires:202603220345;;073544

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm 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...a clipper, 29.50 inches, tracks across the region
tonight eventually 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 over northern lake huron.


lhz362-363-220345-
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 sat mar 21 2026

.tonight...southeast winds 15 to 20 knots decreasing to 10 to
15 knots after midnight...then backing to the northeast early in
the morning. waves 3 to 5 feet. 
.sunday...north winds 10 to 15 knots increasing to 15 to 20 knots
in the afternoon. waves 3 to 5 feet building to 4 to 6 feet late
in the afternoon. waves occasionally around 8 feet. 
.sunday night...north winds 15 to 20 knots. waves 4 to 6 feet. 
.monday...north winds 10 to 15 knots backing to the northwest
early in the afternoon. waves 3 to 5 feet subsiding to 2 to
4 feet early in the afternoon. waves occasionally around 8 feet. 
.monday night...north winds 5 to 10 knots backing to the
southwest after midnight. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots late in the afternoon...then becoming west 15 to
20 knots late in the evening. waves 4 to 6 feet. waves
occasionally around 8 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. waves 4 to 6 feet. 
.thursday...south winds 20 to 25 knots veering to the southwest
in the late morning and early afternoon...then veering to the
northwest with gusts to around 30 knots early in the evening
increasing to 30 knots by midnight. a chance of rain and snow
until early evening. waves 8 to 12 feet building to 10 to 14 feet
by midnight. waves occasionally around 18 feet. 


$$

fzus63 kdtx 211936
glflh 
expires:202603220345;;073545

open lake forecast for lake huron
national weather service detroit/pontiac mi
336 pm 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...a clipper, 29.50 inches, tracks across the region
tonight eventually 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 over northern lake huron.


lhz462>464-220345-
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 sat mar 21 2026

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


$$

fzus63 kmkx 211953
glflm 
expires:202603220315;;073947

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm 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...

low pressure around 29.5 inches has developed across the north
central us today and will continue pushing east across the lake
tonight. as this low passes south of the lake 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
through monday night. into tuesday winds may pick up a bit from
the south as the high exits and weak front passes over the
region. 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. 


lmz261-362-364-366-563-565-567-868-220315-
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-
253 pm cdt sat mar 21 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt veering to northwest 10 to
15 kt late this evening, then becoming north 10 to 20 kt after
midnight increasing to 15 to 25 kt late. chance of rain
overnight. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.sunday...north winds to 30 kt. slight chance of rain in the
morning. 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.
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 1 to 3 ft. 
.monday night...south winds 10 to 15 kt increasing to 15 to 25 kt
overnight. waves 1 to 2 ft building to 3 to 5 ft. 
.tuesday...southwest winds to 30 kt. waves 3 to 5 ft. 
.tuesday night...south winds 10 to 20 kt backing to northeast
15 to 25 kt. waves 2 to 4 ft building to 4 to 7 ft occasionally
to 9 ft. 
.wednesday...east winds 15 to 25 kt becoming southeast 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft. 
.thursday...west winds 15 to 25 kt becoming northwest. chance of
rain and snow. waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 211953
glflm 
expires:202603220315;;073948

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm 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...

low pressure around 29.5 inches has developed across the north
central us today and will continue pushing east across the lake
tonight. as this low passes south of the lake 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
through monday night. into tuesday winds may pick up a bit from
the south as the high exits and weak front passes over the
region. 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. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-220315-
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-
253 pm cdt sat mar 21 2026

sheboygan wi to pentwater mi south...

.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. a few gusts to gale force
possible. slight chance of rain. 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 10 to 20 kt.
waves 8 to 11 ft occasionally to 14 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 1 to 3 ft. 
.tuesday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday night...southeast winds 10 to 20 kt. waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft. 
.wednesday...southeast winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.thursday...west winds 15 to 25 kt veering to north 10 to 20 kt.
chance of rain. waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmqt 212001
glfls 
expires:202603220800;;074118

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.5 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the back-
door cold front of the clipper 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 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.



lsz162-220800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat mar 21 2026 /300 pm cdt sat mar 21 2026/

.late this afternoon...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots. a slight chance of
rain and snow showers through midnight. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday...northeast winds 15 to 25 knots becoming east 10 to
20 knots late. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.sunday night...southeast winds 5 to 15 knots veering southwest
after midnight, then veering west late. 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 west after
midnight. waves 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 increasing to 15 to
25 knots after midnight. waves building to 4 to 7 feet
occasionally to 9 feet. 
.wednesday...east winds 10 to 20 knots increasing to 20 to
30 knots. a chance of snow showers. a chance of rain showers.
waves subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...north winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 212001
glfls 
expires:202603220800;;074119

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.5 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the back-
door cold front of the clipper 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 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.



lsz263-220800-
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 sat mar 21 2026

.late this afternoon...north winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 15 to 25 knots increasing to 20 to
30 knots after midnight. a chance of rain and snow showers
through midnight. freezing spray after midnight. waves building
to 5 to 8 feet occasionally to 10 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray through early afternoon. a slight chance
of snow showers. waves subsiding to 3 to 5 feet occasionally to
7 feet. 
.sunday night...northeast 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...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...south winds 10 to 20 knots becoming southwest
15 to 25 knots 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 15 to 25 knots. freezing spray after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.wednesday...east winds 15 to 25 knots increasing to 20 to
30 knots. 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 diminishing to 15 to
25 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 212001
glfls 
expires:202603220800;;074120

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.5 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the back-
door cold front of the clipper 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 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.



lsz264-220800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt sat mar 21 2026

.late this afternoon...east winds 15 to 25 knots. a slight chance
of rain showers, snow showers and sleet. waves 4 to 7 feet
occasionally to 9 feet. 
.tonight...northeast winds 15 to 25 knots increasing to 20 to
30 knots after midnight. freezing spray after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 10 to
20 knots. freezing spray. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...north winds 5 to 15 knots diminishing to less
than 10 knots after midnight, then becoming west 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...south winds 15 to 25 knots veering southwest
after midnight. waves building to 2 to 4 feet. 
.tuesday...northwest winds 15 to 25 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.tuesday night...northeast winds 15 to 25 knots increasing to
20 to 30 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 gales
to 35 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 7 to 10 feet occasionally to 13 feet. 
.thursday...north gales to 40 knots. a chance of snow showers.
freezing spray. waves subsiding to 4 to 7 feet occasionally to
9 feet. 

$$

fzus63 kmqt 212001
glfls 
expires:202603220800;;074121

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.5 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the back-
door cold front of the clipper 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 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.



lsz265-220800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt sat mar 21 2026

.late this afternoon...southeast winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet subsiding to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots becoming north 20 to
30 knots after midnight. a slight chance of snow showers through
midnight. 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 diminishing to 20 to 30 knots in the
afternoon, then becoming north 15 to 25 knots late. a slight
chance of snow showers by mid afternoon. waves building to 6 to
9 feet occasionally to 11 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...north winds 10 to 20 knots backing west late.
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
20 to 30 knots 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 becoming east
20 to 30 knots after midnight. waves building to 5 to 8 feet
occasionally to 10 feet. 
.wednesday...east winds 15 to 25 knots becoming southeast gales
to 35 knots. 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 and 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 212001
glfls 
expires:202603220800;;074122

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.5 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the back-
door cold front of the clipper 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 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.



lsz266-220800-
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 sat mar 21 2026

.late this afternoon...southeast winds 15 to 25 knots. a chance
of snow showers, possibly mixed with rain and sleet. waves 4 to
7 feet occasionally to 9 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 and snow showers through midnight. waves building to 6 to
9 feet occasionally to 11 feet. 
.sunday...northeast winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots in the
afternoon, then becoming north 15 to 25 knots late. freezing
spray through early afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.sunday night...north winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight, then backing northwest late. 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 15 to 25 knots becoming southwest
gales to 35 knots 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 rain showers through early
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...north winds 15 to 25 knots becoming northeast
20 to 30 knots 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 gales
to 40 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 40 knots becoming north gales to
35 knots. a chance of snow showers, possibly mixed with rain.
freezing spray. waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 8 to 11 feet occasionally to 14 feet. 

$$

fzus63 kmqt 212001
glfls 
expires:202603220800;;074123

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.5 inches dives through the western great lakes 
into lower michigan the rest of today into this evening. the back-
door cold front of the clipper 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 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.



lsz267-220800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt sat mar 21 2026

.late this afternoon...southeast winds 20 to 30 knots. a chance
of snow showers, possibly mixed with rain. waves 3 to 6 feet
occasionally to 8 feet. 
.tonight...southeast winds 15 to 25 knots backing northeast after
midnight, then increasing to 20 to 30 knots late. a chance of
rain and snow showers through midnight. waves subsiding to 2 to
4 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.sunday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. 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. 
.sunday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots late. 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 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...southwest 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 15 to 25 knots becoming northeast
20 to 30 knots after midnight. a chance of snow showers. freezing
spray after midnight. waves building to 4 to 7 feet occasionally
to 9 feet. 
.wednesday...east winds 15 to 25 knots becoming southeast gales
to 35 knots. snow showers, possibly mixed with rain. waves
subsiding to 1 to 3 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.thursday...northwest gales to 35 knots veering north. a chance
of rain and 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. 

$$