fzus63 kdtx 101952
glflh 
expires:202604110400;;152171

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 pm edt fri apr 10 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, 30.50 inches, builds into the region
ensuring more tranquil conditions tonight and saturday as it
centers over lower michigan. active weather returns sunday
morning, with intervals through wednesday, due to several passing
disturbances.


lhz361-362-110400-
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-
352 pm edt fri apr 10 2026

.tonight...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the morning. waves 1 to 3 feet building to 2 to
4 feet in the late evening and overnight. 
.saturday...northwest winds 5 to 10 knots backing to the
southwest in the late morning and early afternoon...then backing
to the southeast late in the afternoon. waves 1 to 3 feet. 
.saturday night...southeast winds 5 to 10 knots increasing to
10 to 15 knots in the late evening and overnight. a chance of
rain after midnight. waves 1 to 3 feet building to 2 to 4 feet
after midnight. 
.sunday...southeast winds 15 to 20 knots increasing to 20 to
25 knots with gusts to around 30 knots in the late morning and
afternoon. rain. waves 5 to 7 feet. waves occasionally around
9 feet. 
.sunday night...south winds 15 to 20 knots becoming southwest
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. rain. waves 6 to 9 feet. waves occasionally around
12 feet. 
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the morning...then veering to the north late in
the evening. a chance of rain...then a chance of showers late in
the evening. waves 6 to 9 feet subsiding to 2 to 4 feet late in
the afternoon. waves occasionally around 12 feet. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
early in the evening...then increasing to 15 to 20 knots by
midnight. showers likely. a chance of thunderstorms until early
evening. waves 5 to 7 feet. waves occasionally around 10 feet. 
.wednesday...southeast winds 15 to 20 knots becoming southwest
10 to 15 knots early in the evening...then becoming west 15 to
20 knots by midnight. showers likely early in the morning...then
a chance of showers. waves 6 to 9 feet. waves occasionally around
12 feet. 


$$

fzus63 kdtx 101952
glflh 
expires:202604110400;;152172

open lake forecast for lake huron
national weather service detroit/pontiac mi
352 pm edt fri apr 10 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, 30.50 inches, builds into the region
ensuring more tranquil conditions tonight and saturday as it
centers over lower michigan. active weather returns sunday
morning, with intervals through wednesday, due to several passing
disturbances.


lhz363-462>464-110400-
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-
352 pm edt fri apr 10 2026

.tonight...north winds 5 to 10 knots backing to the northwest
early in the morning. waves 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots in the morning becoming
light and variable. waves 1 to 3 feet. 
.saturday night...southeast winds 5 to 10 knots increasing to
10 to 15 knots after midnight. a chance of rain after midnight.
waves 1 to 3 feet. 
.sunday...southeast winds 15 to 20 knots. rain in the morning...
then a chance of rain in the afternoon. waves 4 to 6 feet. 
.sunday night...south winds 15 to 20 knots becoming southwest
20 to 25 knots with gusts to around 30 knots in the late evening
and overnight. rain likely. waves 6 to 9 feet. waves occasionally
around 12 feet. 
.monday...southwest winds 15 to 20 knots becoming west 10 to
15 knots late in the afternoon...then becoming northeast 5 to
10 knots late in the evening. rain likely in the morning. a
chance of showers late in the evening. waves 6 to 9 feet
subsiding to 2 to 4 feet late in the afternoon. waves
occasionally around 12 feet. 
.tuesday...east winds 10 to 15 knots becoming southeast 15 to
20 knots in the late morning and early afternoon...then becoming
south 10 to 15 knots early in the evening increasing to 15 to
20 knots by midnight. a chance of showers early in the morning.
rain showers likely. a chance of thunderstorms . waves 4 to
6 feet. waves occasionally around 8 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest 10 to
15 knots . showers likely early in the morning...then a chance of
showers. waves 5 to 7 feet. waves occasionally around 10 feet. 


$$

fzus63 kmkx 101955
glflm 
expires:202604110315;;152185

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 pm cdt fri apr 10 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 30.4 inches will build over the western  
great lakes region tonight into saturday morning, causing winds to
become light and variable. southeast winds return saturday 
afternoon and become gusty saturday night as a sharper pressure 
gradient moves over the lake as low pressure moves into the 
northern great plains.

low pressure will shift into the northern great plains during the
day sunday as it deepens to near 29.4 inches. the low will quickly
shift east toward lake superior sunday night, reaching the
southern shores of the hudson bay by daybreak monday morning.
winds will thus increase further across the open waters sunday
through sunday night. will be monitoring for gale potential
during this time frame, particularly over the northern half of
lake michigan. the need for headlines will continue to be
evaluated as this portion of the period approaches. winds will
weaken monday morning as 30.0 inch high pressure moves across
ontario. 

passing low pressure systems will lead to persistently active
conditions across lake michigan saturday afternoon into next week,
with multiple chances for showers and thunderstorms forecast. will
need to monitor thunderstorm development during the monday-
wednesday time period, as some storms could become strong to
severe.


lmz261-362-364-366-563-565-567-868-110315-
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-
255 pm cdt fri apr 10 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 10 to 15 kt backing to southwest 5 to
10 kt. waves 1 to 2 ft. 
.saturday...southwest winds 5 to 10 kt becoming south 10 to
20 kt. waves 1 to 3 ft. 
.saturday night...south winds 10 to 20 kt becoming southeast to
30 kt. chance of rain showers in the evening, then rain showers
overnight. waves 1 to 3 ft building to 4 to 7 ft occasionally to
9 ft. 
.sunday...south winds to 30 kt. rain showers with a chance of
thunderstorms in the morning, then rain showers likely with a
chance of thunderstorms in the afternoon. waves 6 to 9 ft
occasionally to 12 ft. 
.sunday night...southwest gales to 40 kt. rain showers likely.
waves 8 to 11 ft occasionally to 14 ft. 
.monday...southwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. waves 6 to 9 ft occasionally to 12 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.monday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. rain showers likely with a chance of thunderstorms. waves
2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
rain showers likely with a chance of thunderstorms. waves 4 to
7 ft occasionally to 9 ft. 
.wednesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
chance of rain showers. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 101955
glflm 
expires:202604110315;;152186

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 pm cdt fri apr 10 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 30.4 inches will build over the western  
great lakes region tonight into saturday morning, causing winds to
become light and variable. southeast winds return saturday 
afternoon and become gusty saturday night as a sharper pressure 
gradient moves over the lake as low pressure moves into the 
northern great plains.

low pressure will shift into the northern great plains during the
day sunday as it deepens to near 29.4 inches. the low will quickly
shift east toward lake superior sunday night, reaching the
southern shores of the hudson bay by daybreak monday morning.
winds will thus increase further across the open waters sunday
through sunday night. will be monitoring for gale potential
during this time frame, particularly over the northern half of
lake michigan. the need for headlines will continue to be
evaluated as this portion of the period approaches. winds will
weaken monday morning as 30.0 inch high pressure moves across
ontario. 

passing low pressure systems will lead to persistently active
conditions across lake michigan saturday afternoon into next week,
with multiple chances for showers and thunderstorms forecast. will
need to monitor thunderstorm development during the monday-
wednesday time period, as some storms could become strong to
severe.


lmz080-669-671-673-675-777-779-870-872-874-876-878-110315-
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-
255 pm cdt fri apr 10 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 10 to 20 kt diminishing to 10 to 15 kt
late this evening, then becoming east after midnight becoming
east 5 to 10 kt late. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 5 to 10 kt becoming east 10 to 15 kt.
waves 1 to 2 ft. 
.saturday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt late in the evening, then increasing to 15 to 25 kt after
midnight becoming southeast 15 to 25 kt late. chance of rain
showers. waves 1 to 3 ft building to 4 to 7 ft occasionally to
9 ft. 
.sunday...south winds to 30 kt. chance of rain showers. waves
6 to 9 ft occasionally to 12 ft. 
.sunday night...southwest gales to 35 kt. rain showers in the
evening, then rain showers likely overnight. waves 7 to 10 ft
occasionally to 13 ft. 
.monday...southwest winds to 30 kt becoming south 10 to 20 kt in
the afternoon. chance of rain showers in the morning. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.monday night...south winds 10 to 20 kt increasing to 15 to
25 kt. chance of rain showers. waves 2 to 4 ft building to 4 to
6 ft occasionally to 8 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain showers and thunderstorms. waves 4 to 7 ft
occasionally to 9 ft. 
.wednesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
chance of rain showers. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 102001
glfls 
expires:202604110800;;152402

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri apr 10 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 ridge over lake superior builds to 30.4 inches through 
saturday as high pressure over the the upper mississippi river 
valley shifts east to the great lakes. a 29.3 inch low lifts through 
the northern plains on sunday while the high strengthens to 30.5 
inches and pushes off of the eastern seaboard into the atlantic. the 
low pushes east through the upper great lakes at 29.4 inches sunday 
night and moves into northern quebec by monday. another low will 
take shape over the central plains on monday, deepening to 29.5 
inches on tuesday with a weak 29.8 inch trough extending through the 
upper great lakes.



lsz162-110800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt fri apr 10 2026 /300 pm cdt fri apr 10 2026/

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.saturday...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. a slight chance of rain showers by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 10 to 20 knots. rain showers and a
slight chance of thunderstorms. waves building to 1 to 3 feet. 
.sunday...east winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. rain showers. a slight chance of thunderstorms
by mid afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers through
midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing east by mid afternoon.
waves calm to 2 feet. 
.monday night...northeast winds 15 to 25 knots. a chance of rain
showers through midnight. rain showers likely after midnight.
waves building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...northeast winds 15 to 25 knots. a chance of rain
showers. waves subsiding to 3 to 6 feet occasionally to 8 feet,
then building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...southwest winds 10 to 20 knots becoming east 5 to
15 knots. a chance of rain showers. waves subsiding to calm to
2 feet. 

$$

fzus63 kmqt 102001
glfls 
expires:202604110800;;152403

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri apr 10 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 ridge over lake superior builds to 30.4 inches through 
saturday as high pressure over the the upper mississippi river 
valley shifts east to the great lakes. a 29.3 inch low lifts through 
the northern plains on sunday while the high strengthens to 30.5 
inches and pushes off of the eastern seaboard into the atlantic. the 
low pushes east through the upper great lakes at 29.4 inches sunday 
night and moves into northern quebec by monday. another low will 
take shape over the central plains on monday, deepening to 29.5 
inches on tuesday with a weak 29.8 inch trough extending through the 
upper great lakes.



lsz263-110800-
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 fri apr 10 2026

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

$$

fzus63 kmqt 102001
glfls 
expires:202604110800;;152404

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri apr 10 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 ridge over lake superior builds to 30.4 inches through 
saturday as high pressure over the the upper mississippi river 
valley shifts east to the great lakes. a 29.3 inch low lifts through 
the northern plains on sunday while the high strengthens to 30.5 
inches and pushes off of the eastern seaboard into the atlantic. the 
low pushes east through the upper great lakes at 29.4 inches sunday 
night and moves into northern quebec by monday. another low will 
take shape over the central plains on monday, deepening to 29.5 
inches on tuesday with a weak 29.8 inch trough extending through the 
upper great lakes.



lsz264-110800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 pm edt fri apr 10 2026

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

$$

fzus63 kmqt 102001
glfls 
expires:202604110800;;152405

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri apr 10 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 ridge over lake superior builds to 30.4 inches through 
saturday as high pressure over the the upper mississippi river 
valley shifts east to the great lakes. a 29.3 inch low lifts through 
the northern plains on sunday while the high strengthens to 30.5 
inches and pushes off of the eastern seaboard into the atlantic. the 
low pushes east through the upper great lakes at 29.4 inches sunday 
night and moves into northern quebec by monday. another low will 
take shape over the central plains on monday, deepening to 29.5 
inches on tuesday with a weak 29.8 inch trough extending through the 
upper great lakes.



lsz265-110800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 pm edt fri apr 10 2026

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

$$

fzus63 kmqt 102001
glfls 
expires:202604110800;;152406

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri apr 10 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 ridge over lake superior builds to 30.4 inches through 
saturday as high pressure over the the upper mississippi river 
valley shifts east to the great lakes. a 29.3 inch low lifts through 
the northern plains on sunday while the high strengthens to 30.5 
inches and pushes off of the eastern seaboard into the atlantic. the 
low pushes east through the upper great lakes at 29.4 inches sunday 
night and moves into northern quebec by monday. another low will 
take shape over the central plains on monday, deepening to 29.5 
inches on tuesday with a weak 29.8 inch trough extending through the 
upper great lakes.



lsz266-110800-
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 fri apr 10 2026

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

$$

fzus63 kmqt 102001
glfls 
expires:202604110800;;152407

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri apr 10 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 ridge over lake superior builds to 30.4 inches through 
saturday as high pressure over the the upper mississippi river 
valley shifts east to the great lakes. a 29.3 inch low lifts through 
the northern plains on sunday while the high strengthens to 30.5 
inches and pushes off of the eastern seaboard into the atlantic. the 
low pushes east through the upper great lakes at 29.4 inches sunday 
night and moves into northern quebec by monday. another low will 
take shape over the central plains on monday, deepening to 29.5 
inches on tuesday with a weak 29.8 inch trough extending through the 
upper great lakes.



lsz267-110800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 pm edt fri apr 10 2026

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

$$