fzus63 kdtx 111855
glflh 
expires:202605120300;;396754

open lake forecast for lake huron
national weather service detroit/pontiac mi
255 pm edt mon may 11 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, holds over the region
today and begins drifting eastward overnight while maintaining 
light marine winds. the next low pressure system, 29.70 inches, 
moves in late tuesday, bringing stronger winds along with showers 
and thunderstorms.


lhz361-362-120300-
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-
255 pm edt mon may 11 2026

.tonight...west winds 5 to 10 knots early in the evening becoming
light and variable. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots becoming southeast 15 to
20 knots. showers in the afternoon. waves 1 to 3 feet building to
4 to 6 feet in the afternoon. waves occasionally around 8 feet. 
.tuesday night...southeast winds 20 to 25 knots with gusts to
around 30 knots becoming east 15 to 20 knots after midnight.
showers likely in the evening...then a chance of showers after
midnight. waves 8 to 12 feet. waves occasionally around 15 feet. 
.wednesday...north winds 15 to 20 knots backing to the northwest
early in the afternoon. showers in the morning...then showers
likely in the afternoon. waves 5 to 7 feet. waves occasionally
around 10 feet. 
.wednesday night...northwest winds 15 to 20 knots. waves 4 to
6 feet. 
.thursday...northwest winds 15 to 20 knots becoming west 5 to
10 knots. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
afternoon. waves occasionally around 8 feet. 
.friday...south winds 5 to 10 knots becoming southeast 15 to
20 knots. a chance of showers by midnight. waves 2 feet or less
building to 2 to 4 feet. 
.saturday...southwest winds 10 to 15 knots becoming west 15 to
20 knots early in the evening...then decreasing to 10 to 15 knots
by midnight. a chance of showers early in the morning. waves 2 to
4 feet. 


$$

fzus63 kdtx 111855
glflh 
expires:202605120300;;396755

open lake forecast for lake huron
national weather service detroit/pontiac mi
255 pm edt mon may 11 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, holds over the region
today and begins drifting eastward overnight while maintaining 
light marine winds. the next low pressure system, 29.70 inches, 
moves in late tuesday, bringing stronger winds along with showers 
and thunderstorms.


lhz363-462>464-120300-
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-
255 pm edt mon may 11 2026

.tonight...light and variable winds. waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots becoming southeast 15 to
20 knots. showers in the afternoon. waves 2 feet or less building
to 3 to 5 feet in the afternoon. 
.tuesday night...southeast winds 15 to 20 knots with gusts to
around 30 knots increasing to 20 to 25 knots with gusts to around
30 knots by midnight...then decreasing to 15 to 20 knots after
midnight. a chance of showers. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.wednesday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots early in the afternoon. a chance of showers. waves
3 to 5 feet. 
.wednesday night...northwest winds 20 to 25 knots decreasing to
15 to 20 knots after midnight. a chance of showers in the
evening. waves 4 to 6 feet. waves occasionally around 8 feet. 
.thursday...northwest winds 15 to 20 knots becoming 5 to 10 knots
late in the afternoon...then backing to the northwest late in the
evening. waves 4 to 6 feet subsiding to 1 to 3 feet late in the
evening. waves occasionally around 8 feet. 
.friday...west winds 5 to 10 knots backing to the south in the
late morning and early afternoon...then increasing to 10 to
15 knots . a chance of. waves 1 to 3 feet building to 2 to 4 feet
by midnight. 
.saturday...south winds 10 to 15 knots veering to the west by
midnight. a chance of showers early in the morning. waves 2 to
4 feet. 


$$

fzus63 kmkx 111924
glflm 
expires:202605120330;;397978

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 pm cdt mon may 11 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...

high pressure around 30.3 inches over the northern and western
great lakes this afternoon will move to the lower great lakes
tonight, while low pressure around 29.7 inches moves into northern
minnesota from the canadian prairies. the low will then track to
central lake michigan by early tuesday evening and to the lower
great lakes on wednesday. light and variable winds over lake
michigan will become breezy southerly winds on tuesday with a few
gale force gusts possible. the winds will then shift west to
northwest with a cold frontal passage tuesday evening. breezy
northwest winds will then continue into wednesday. 

high pressure around 30.1 inches will then move over lake michigan
for thursday into thursday evening. the high will move east on
friday with breezy south winds returning. 


lmz261-362-364-366-563-565-567-868-120330-
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-
224 pm cdt mon may 11 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 10 to 20 kt becoming south late, then
becoming southeast 10 to 15 kt through early evening diminishing
to 5 to 10 kt late this evening becoming southeast 5 to 10 kt
becoming south 10 to 20 kt late. waves 1 to 2 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. rain 
showers and slight chance of thunderstorms in the morning, then 
chance of rain showers and slight chance of thunderstorms in the 
afternoon. waves 2 to 4 ft building to 7 to 10 ft occasionally to 
13 ft. 
.tuesday night...south winds 15 to 25 kt veering to northwest.
chance of rain showers in the evening. waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.wednesday...northwest winds to 30 kt. chance of rain showers and
thunderstorms in the morning. waves 4 to 6 ft occasionally to
8 ft. 
.wednesday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.thursday...north winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...south winds 5 to 10 kt increasing to 10 to
20 kt. waves 1 ft or less building to 2 to 4 ft. 
.friday...south winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday...southwest winds 15 to 25 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft.  

$$

fzus63 kmkx 111924
glflm 
expires:202605120330;;397979

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
224 pm cdt mon may 11 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...

high pressure around 30.3 inches over the northern and western
great lakes this afternoon will move to the lower great lakes
tonight, while low pressure around 29.7 inches moves into northern
minnesota from the canadian prairies. the low will then track to
central lake michigan by early tuesday evening and to the lower
great lakes on wednesday. light and variable winds over lake
michigan will become breezy southerly winds on tuesday with a few
gale force gusts possible. the winds will then shift west to
northwest with a cold frontal passage tuesday evening. breezy
northwest winds will then continue into wednesday. 

high pressure around 30.1 inches will then move over lake michigan
for thursday into thursday evening. the high will move east on
friday with breezy south winds returning. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-120330-
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-
224 pm cdt mon may 11 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northeast through
early evening, then diminishing to 5 to 10 kt late this evening
becoming southeast after midnight increasing to 10 to 15 kt.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.tuesday...south winds 10 to 20 kt increasing to 30 kt. chance of
rain showers and slight chance of thunderstorms. waves 1 to 3 ft
building to 7 to 10 ft occasionally to 13 ft. 
.tuesday night...southwest winds to 30 kt becoming west late in
the evening, then diminishing to 10 to 20 kt after midnight
becoming northwest to 30 kt late. chance of rain showers in the
evening. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.wednesday...northwest winds to 30 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.wednesday night...north winds to 30 kt diminishing to 10 to
20 kt overnight. waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft. 
.thursday...north winds 10 to 20 kt. waves 2 to 4 ft subsiding to
1 to 3 ft. 
.thursday night...east winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft. 
.friday...south winds to 30 kt. chance of rain showers. waves
4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft. 
.saturday...southwest winds 10 to 20 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft.  

$$

fzus63 kmqt 112025
glfls 
expires:202605120430;;400083

open lake forecast for lake superior
national weather service marquette mi
425 pm edt mon may 11 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 30.3 inch high over the upper great lakes this afternoon departs 
for the lower great lakes this evening. behind it, a 29.7 inch 
clipper descends over far western lake superior tuesday morning and 
crosses upper michigan through tuesday evening. as the clipper 
departs eastward early wednesday, ridging moves back over lake 
superior, building to 30.1 inches wednesday night into thursday. 
this ridging is pressed southeast to the lower great lakes late 
thursday into friday while a 29.1 inch low emanates off the northern 
rockies. this low is expected to bring troughing of 29.6 inches over 
lake superior on friday and persisting through saturday.



lsz162-120430-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
425 pm edt mon may 11 2026 /325 pm cdt mon may 11 2026/

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots increasing to 10 to 20 knots
after midnight. rain showers and a slight chance of thunderstorms
after midnight. waves building to 1 to 3 feet. 
.tuesday...southeast winds 15 to 25 knots backing east in the
afternoon, then becoming north 10 to 20 knots late. a chance of
rain showers. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 1 to 3 feet. 
.tuesday night...north winds 10 to 20 knots becoming northwest
5 to 15 knots late. a slight chance of rain showers through
midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...east winds 10 to 20 knots becoming south 15 to
25 knots after midnight. a chance of rain showers through
midnight, then rain showers likely after midnight. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.friday...southwest winds 15 to 25 knots veering west. a chance
of rain showers. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.saturday...west winds 15 to 25 knots becoming northeast 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 112025
glfls 
expires:202605120430;;400084

open lake forecast for lake superior
national weather service marquette mi
425 pm edt mon may 11 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 30.3 inch high over the upper great lakes this afternoon departs 
for the lower great lakes this evening. behind it, a 29.7 inch 
clipper descends over far western lake superior tuesday morning and 
crosses upper michigan through tuesday evening. as the clipper 
departs eastward early wednesday, ridging moves back over lake 
superior, building to 30.1 inches wednesday night into thursday. 
this ridging is pressed southeast to the lower great lakes late 
thursday into friday while a 29.1 inch low emanates off the northern 
rockies. this low is expected to bring troughing of 29.6 inches over 
lake superior on friday and persisting through saturday.



lsz263-120430-
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-
425 pm edt mon may 11 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. a chance of rain showers after midnight.
waves building to 2 to 4 feet. 
.tuesday...southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then becoming north 15 to 25 knots
late. rain showers through early afternoon, then a chance of rain
showers by mid afternoon. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of rain showers through
midnight. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.thursday...east winds less than 10 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 15 to 25 knots veering south
after midnight. a chance of rain showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday...south winds 15 to 25 knots veering southwest. a chance
of rain showers. waves subsiding to 2 to 4 feet. 
.saturday...west winds 20 to 30 knots becoming northeast 5 to
15 knots. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 112025
glfls 
expires:202605120430;;400085

open lake forecast for lake superior
national weather service marquette mi
425 pm edt mon may 11 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 30.3 inch high over the upper great lakes this afternoon departs 
for the lower great lakes this evening. behind it, a 29.7 inch 
clipper descends over far western lake superior tuesday morning and 
crosses upper michigan through tuesday evening. as the clipper 
departs eastward early wednesday, ridging moves back over lake 
superior, building to 30.1 inches wednesday night into thursday. 
this ridging is pressed southeast to the lower great lakes late 
thursday into friday while a 29.1 inch low emanates off the northern 
rockies. this low is expected to bring troughing of 29.6 inches over 
lake superior on friday and persisting through saturday.



lsz264-120430-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
425 pm edt mon may 11 2026

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

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

$$

fzus63 kmqt 112025
glfls 
expires:202605120430;;400086

open lake forecast for lake superior
national weather service marquette mi
425 pm edt mon may 11 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 30.3 inch high over the upper great lakes this afternoon departs 
for the lower great lakes this evening. behind it, a 29.7 inch 
clipper descends over far western lake superior tuesday morning and 
crosses upper michigan through tuesday evening. as the clipper 
departs eastward early wednesday, ridging moves back over lake 
superior, building to 30.1 inches wednesday night into thursday. 
this ridging is pressed southeast to the lower great lakes late 
thursday into friday while a 29.1 inch low emanates off the northern 
rockies. this low is expected to bring troughing of 29.6 inches over 
lake superior on friday and persisting through saturday.



lsz265-120430-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
425 pm edt mon may 11 2026

...gale warning in effect from tuesday morning through tuesday
afternoon...
...gale watch in effect from wednesday morning through wednesday
afternoon...

.late this afternoon...east winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...southeast winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then becoming south 20 to 30 knots late.
waves building to 3 to 5 feet occasionally to 7 feet. 
.tuesday...southeast winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. rain showers through early afternoon,
then a chance of rain showers by mid afternoon. waves building to
4 to 8 feet occasionally to 10 feet. 
.tuesday night...north winds 15 to 25 knots increasing to 20 to
30 knots late. a chance of rain showers. waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest winds 20 to 30 knots. waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet. 
.wednesday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...southeast winds 20 to 30 knots veering south
after midnight. a chance of rain showers after midnight. waves
building to 3 to 6 feet occasionally to 8 feet. 
.friday...south winds 20 to 30 knots veering southwest. a chance
of showers. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 2 to 4 feet. 
.saturday...west winds 20 to 30 knots becoming northwest 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 112025
glfls 
expires:202605120430;;400087

open lake forecast for lake superior
national weather service marquette mi
425 pm edt mon may 11 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 30.3 inch high over the upper great lakes this afternoon departs 
for the lower great lakes this evening. behind it, a 29.7 inch 
clipper descends over far western lake superior tuesday morning and 
crosses upper michigan through tuesday evening. as the clipper 
departs eastward early wednesday, ridging moves back over lake 
superior, building to 30.1 inches wednesday night into thursday. 
this ridging is pressed southeast to the lower great lakes late 
thursday into friday while a 29.1 inch low emanates off the northern 
rockies. this low is expected to bring troughing of 29.6 inches over 
lake superior on friday and persisting through saturday.



lsz266-120430-
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-
425 pm edt mon may 11 2026

...gale warning in effect from tuesday morning through tuesday
afternoon...
...gale watch in effect from wednesday morning through wednesday
afternoon...

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

$$

fzus63 kmqt 112025
glfls 
expires:202605120430;;400088

open lake forecast for lake superior
national weather service marquette mi
425 pm edt mon may 11 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 30.3 inch high over the upper great lakes this afternoon departs 
for the lower great lakes this evening. behind it, a 29.7 inch 
clipper descends over far western lake superior tuesday morning and 
crosses upper michigan through tuesday evening. as the clipper 
departs eastward early wednesday, ridging moves back over lake 
superior, building to 30.1 inches wednesday night into thursday. 
this ridging is pressed southeast to the lower great lakes late 
thursday into friday while a 29.1 inch low emanates off the northern 
rockies. this low is expected to bring troughing of 29.6 inches over 
lake superior on friday and persisting through saturday.



lsz267-120430-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
425 pm edt mon may 11 2026

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds less than 10 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.tuesday...southeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. a chance of rain showers through early
afternoon, then rain showers by mid afternoon. waves building to
3 to 6 feet occasionally to 8 feet. 
.tuesday night...southeast winds 15 to 25 knots backing east
after midnight, then backing north late. rain showers likely
through midnight, then a chance of rain showers after midnight.
waves subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...north winds 15 to 25 knots becoming northwest 20 to
30 knots by mid afternoon. a slight chance of rain showers
through early afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.wednesday night...north winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.thursday...north winds 5 to 15 knots backing northwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.thursday night...southeast winds 5 to 15 knots becoming south
10 to 20 knots after midnight. waves building to 2 to 4 feet. 
.friday...south winds 15 to 25 knots. a chance of rain showers.
waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 1 to 3 feet. 
.saturday...west winds 15 to 25 knots becoming northwest 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$