fzus63 kdtx 100737
glflh 
expires:202604101545;;124507

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 am 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...briefly dry conditions give way to additional
opportunities for showers and perhaps a couple thunderstorms
through the morning hours as an upper level disturbance moves
across the northern great lakes. high pressure then builds in
from the west to start the weekend with drier and weaker flow.
active weather will be possible again sunday through wednesday.


lhz361-101545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
337 am edt fri apr 10 2026

.today...light and variable winds becoming west 5 to 10 knots
late in the afternoon. waves 2 feet or less. 
.tonight...northwest winds 5 to 10 knots. waves 1 to 3 feet. 
.saturday...west winds 5 to 10 knots early in the morning
becoming light and variable...then becoming east 5 to 10 knots
early in the afternoon. waves 2 feet or less. 
.saturday night...east winds 5 to 10 knots becoming southeast
10 to 15 knots in the late evening and overnight. showers likely
after midnight. waves 1 to 3 feet building to 2 to 4 feet after
midnight. 
.sunday...southeast winds 15 to 20 knots becoming southwest 20 to
25 knots with gusts to around 30 knots late in the evening.
showers. waves 6 to 9 feet. waves occasionally around 12 feet. 
.monday...southwest winds 20 to 25 knots with gusts to around
30 knots becoming west 15 to 20 knots in the late morning and
early afternoon...then decreasing to 5 to 10 knots early in the
evening becoming northeast 10 to 15 knots by midnight. a chance
of showers early in the morning. showers likely by midnight.
waves 6 to 9 feet subsiding to 1 to 3 feet. 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. waves 4 to 6 feet. 


$$

fzus63 kdtx 100737
glflh 
expires:202604101545;;124508

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 am 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...briefly dry conditions give way to additional
opportunities for showers and perhaps a couple thunderstorms
through the morning hours as an upper level disturbance moves
across the northern great lakes. high pressure then builds in
from the west to start the weekend with drier and weaker flow.
active weather will be possible again sunday through wednesday.


lhz362-363-101545-
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-
337 am edt fri apr 10 2026

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


$$

fzus63 kdtx 100737
glflh 
expires:202604101545;;124509

open lake forecast for lake huron
national weather service detroit/pontiac mi
337 am 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...briefly dry conditions give way to additional
opportunities for showers and perhaps a couple thunderstorms
through the morning hours as an upper level disturbance moves
across the northern great lakes. high pressure then builds in
from the west to start the weekend with drier and weaker flow.
active weather will be possible again sunday through wednesday.


lhz462>464-101545-
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-
337 am edt fri apr 10 2026

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


$$

fzus63 kmkx 100737
glflm 
expires:202604101530;;124512

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 am 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...

a stationary front will remain just south of lake michigan through
friday, leading to continued light to moderate north winds. high 
pressure will then build over the upper great lakes region 
friday night 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.  


lmz261-362-364-366-563-565-567-868-101530-
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-
237 am cdt fri apr 10 2026

sheboygan wi to pentwater mi north...

.today...north winds 10 to 15 kt becoming northwest 10 to 20 kt.
waves 1 to 2 ft. 
.tonight...northeast winds 10 to 15 kt backing to southwest.
waves 1 to 2 ft. 
.saturday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft. 
.saturday night...southeast winds 10 to 20 kt increasing to 15 to
25 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 increasing to gales to 35 kt. rain
showers. waves 7 to 10 ft occasionally to 13 ft building to 8 to
12 ft occasionally to 16 ft. 
.sunday night...southwest gales to 40 kt. rain showers likely.
waves 8 to 12 ft occasionally to 16 ft. 
.monday...southwest winds to 30 kt diminishing to 10 to 20 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.tuesday...southeast winds 15 to 25 kt becoming east 10 to 20 kt.
rain showers likely. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 100737
glflm 
expires:202604101530;;124513

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 am 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...

a stationary front will remain just south of lake michigan through
friday, leading to continued light to moderate north winds. high 
pressure will then build over the upper great lakes region 
friday night 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.  


lmz080-669-671-673-675-777-779-870-872-874-876-878-101530-
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-
237 am cdt fri apr 10 2026

sheboygan wi to pentwater mi south...

.today...north winds 10 to 20 kt. slight chance of rain showers
this morning. waves 2 to 4 ft. 
.tonight...northeast winds 10 to 20 kt diminishing to 10 to 15 kt
late in the 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 increasing to 10 to 15 kt.
waves 1 to 2 ft. 
.saturday night...southeast winds 10 to 20 kt increasing to 15 to
25 kt. rain showers likely 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. chance of rain showers. waves
7 to 10 ft occasionally to 13 ft building to 8 to 11 ft
occasionally to 14 ft. 
.sunday night...southwest winds to 30 kt. a few gale force gusts
possible. showers likely. waves 8 to 11 ft occasionally to 14 ft.
.monday...southwest winds to 30 kt becoming south 10 to 20 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.tuesday...southwest winds 15 to 25 kt becoming south. chance of
rain showers. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 100801
glfls 
expires:202604102000;;124962

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

30.4 inch high pressure over the plains sends 30.2 inch ridging over 
the lake today. ridging over the lake builds to 30.4 inches tonight 
into saturday as high pressure becomes centered over the lower great 
lakes at 30.5 inches. on sunday, a 29.3 inch low pressure lifts 
through the northern plains while the 30.5 inch high pushes off of 
the eastern seaboard into the atlantic. this low pushes east through 
the upper great lakes sunday night before continuing into northern 
quebec 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.



lsz162-102000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri apr 10 2026 /300 am cdt fri apr 10 2026/

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...west winds 10 to 20 knots backing southwest in the
afternoon, then diminishing to 5 to 15 knots late. waves calm to
2 feet. 
.tonight...west winds 5 to 15 knots veering northwest late. waves
calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a slight chance of rain
showers, possibly mixed with snow by mid afternoon. waves calm to
2 feet. 
.saturday night...east winds 10 to 20 knots. a slight chance of
thunderstorms through midnight. rain showers. waves building to
2 to 4 feet. 
.sunday...east winds 5 to 15 knots backing northeast by mid
afternoon. rain showers. a chance of thunderstorms by mid
afternoon. waves subsiding to 1 to 3 feet. 
.sunday night...west winds 10 to 20 knots. a chance of rain
showers. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.monday...east winds 5 to 15 knots becoming northeast 15 to
25 knots. rain showers likely. waves building to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to 20 to
30 knots. a chance of rain showers. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 7 to 10 feet
occasionally to 13 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202604102000;;124963

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

30.4 inch high pressure over the plains sends 30.2 inch ridging over 
the lake today. ridging over the lake builds to 30.4 inches tonight 
into saturday as high pressure becomes centered over the lower great 
lakes at 30.5 inches. on sunday, a 29.3 inch low pressure lifts 
through the northern plains while the 30.5 inch high pushes off of 
the eastern seaboard into the atlantic. this low pushes east through 
the upper great lakes sunday night before continuing into northern 
quebec 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.



lsz263-102000-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
400 am edt fri apr 10 2026

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots backing southwest late.
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...south winds less than 10 knots backing southeast in
the afternoon, then becoming east 5 to 15 knots late. a slight
chance of rain and snow showers by mid afternoon. waves calm to
2 feet. 
.saturday night...southeast winds 10 to 20 knots. rain showers. a
slight chance of thunderstorms 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 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. rain showers likely through midnight. waves 2 to
4 feet. 
.monday...northwest winds 10 to 20 knots becoming east 20 to
30 knots. a chance of rain showers. waves subsiding to calm to
2 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northeast winds 20 to 30 knots veering east. a chance
of rain showers. waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202604102000;;124964

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

30.4 inch high pressure over the plains sends 30.2 inch ridging over 
the lake today. ridging over the lake builds to 30.4 inches tonight 
into saturday as high pressure becomes centered over the lower great 
lakes at 30.5 inches. on sunday, a 29.3 inch low pressure lifts 
through the northern plains while the 30.5 inch high pushes off of 
the eastern seaboard into the atlantic. this low pushes east through 
the upper great lakes sunday night before continuing into northern 
quebec 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.



lsz264-102000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt fri apr 10 2026

.early this morning...west winds less than 10 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots. waves 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 15 to 25 knots increasing to
20 to 30 knots after midnight. a chance of rain showers through
midnight, then rain showers after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.sunday...southeast winds 20 to 30 knots diminishing to 10 to
20 knots by mid afternoon. rain showers. 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 10 to 20 knots veering west after
midnight. rain showers likely through midnight. waves subsiding
to 2 to 4 feet, then building to 3 to 5 feet occasionally to
7 feet. 
.monday...northwest winds 10 to 20 knots becoming east 15 to
25 knots. a chance of rain showers. waves subsiding to calm to
2 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...east winds 15 to 25 knots increasing to 20 to
30 knots. a chance of rain showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202604102000;;124965

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

30.4 inch high pressure over the plains sends 30.2 inch ridging over 
the lake today. ridging over the lake builds to 30.4 inches tonight 
into saturday as high pressure becomes centered over the lower great 
lakes at 30.5 inches. on sunday, a 29.3 inch low pressure lifts 
through the northern plains while the 30.5 inch high pushes off of 
the eastern seaboard into the atlantic. this low pushes east through 
the upper great lakes sunday night before continuing into northern 
quebec 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.



lsz265-102000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt fri apr 10 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 10 to 20 knots. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots veering west late.
waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing southeast in
the afternoon, then becoming east 10 to 20 knots late. waves calm
to 2 feet. 
.saturday night...southeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. 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 and a chance of
thunderstorms. waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday night...southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. rain showers likely through
midnight. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.monday...northwest winds 10 to 20 knots becoming east 15 to
25 knots. a chance of rain showers. waves subsiding to calm to
2 feet, then building to 4 to 7 feet occasionally to 9 feet. 
.tuesday...east winds 15 to 25 knots increasing to 20 to
30 knots. a chance of rain showers, then rain showers likely.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202604102000;;124966

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

30.4 inch high pressure over the plains sends 30.2 inch ridging over 
the lake today. ridging over the lake builds to 30.4 inches tonight 
into saturday as high pressure becomes centered over the lower great 
lakes at 30.5 inches. on sunday, a 29.3 inch low pressure lifts 
through the northern plains while the 30.5 inch high pushes off of 
the eastern seaboard into the atlantic. this low pushes east through 
the upper great lakes sunday night before continuing into northern 
quebec 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.



lsz266-102000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
400 am edt fri apr 10 2026

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

$$

fzus63 kmqt 100801
glfls 
expires:202604102000;;124967

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

30.4 inch high pressure over the plains sends 30.2 inch ridging over 
the lake today. ridging over the lake builds to 30.4 inches tonight 
into saturday as high pressure becomes centered over the lower great 
lakes at 30.5 inches. on sunday, a 29.3 inch low pressure lifts 
through the northern plains while the 30.5 inch high pushes off of 
the eastern seaboard into the atlantic. this low pushes east through 
the upper great lakes sunday night before continuing into northern 
quebec 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.



lsz267-102000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt fri apr 10 2026

.early this morning...west winds 5 to 15 knots. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.today...northwest winds 5 to 15 knots becoming west 10 to
20 knots late. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots backing southwest after
midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots backing southeast late.
waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots increasing to
20 to 30 knots after midnight. a slight chance of rain showers,
possibly mixed with snow through midnight, then rain showers
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. 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 southwest
after midnight. rain showers through midnight, then a chance of
rain showers after midnight. waves building to 4 to 8 feet
occasionally to 10 feet. 
.monday...northwest winds 10 to 20 knots becoming east 15 to
25 knots. a chance of rain showers. waves subsiding to 1 to
3 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...east winds 15 to 25 knots increasing to 20 to
30 knots. a chance of rain showers, then rain showers likely.
waves subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet. 

$$