fzus61 kbuf 311403
glflo 
expires:202605312100;;951663

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun may 31 2026

for waters beyond five nautical miles of shore on lake ontario

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 30.2 inch high will move southward across lake 
erie through tonight. this will allow a back door cold front to clip 
the eastern lake waters through evening, this from a 29.8 inch area 
of low pressure that will push south across southern quebec and new 
england through tonight. this low will then push off the new england 
coastline on monday. another 30.4 inch high centered over hudson bay 
monday night will then build south across the entire great lakes 
region tuesday and wednesday, then into the ohio valley and lower 
great lakes by thursday.


loz062-312100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt sun may 31 2026

.this afternoon...west winds 10 to 15 knots becoming southwest.
waves 1 to 2 feet. 
.tonight...west winds 5 to 15 knots becoming northwest less than
10 knots. waves 1 to 2 feet. 
.monday...north winds less than 10 knots becoming east. waves
1 foot or less. 
.monday night...east winds less than 10 knots. waves 1 foot or
less. 
.tuesday...northwest winds 10 knots or less. waves 1 foot or
less. 
.wednesday...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 

$$

fzus61 kbuf 311403
glflo 
expires:202605312100;;951664

open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun may 31 2026

for waters beyond five nautical miles of shore on lake ontario

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 30.2 inch high will move southward across lake 
erie through tonight. this will allow a back door cold front to clip 
the eastern lake waters through evening, this from a 29.8 inch area 
of low pressure that will push south across southern quebec and new 
england through tonight. this low will then push off the new england 
coastline on monday. another 30.4 inch high centered over hudson bay 
monday night will then build south across the entire great lakes 
region tuesday and wednesday, then into the ohio valley and lower 
great lakes by thursday.


loz063>065-312100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt sun may 31 2026

.this afternoon...west winds 15 to 20 knots. a chance of showers
late. waves 1 to 3 feet building to 3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of showers in the evening. waves 2 to 4 feet
subsiding to 1 to 2 feet. 
.monday...north winds 5 to 10 knots. waves 1 foot or less. 
.monday night...north winds 10 knots or less. waves 1 foot or
less. 
.tuesday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.wednesday...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots. waves 2 feet or less. 

$$

fzus61 kcle 311348
glfle 
expires:202605312015;;951256

open lake forecast for lake erie
national weather service cleveland oh
948 am edt sun may 31 2026

for waters beyond five nautical miles of shore on lake erie

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 30.20 inches will persist across the region through
the week.


lez162-163-312015-
detroit river lt. to maumee bay oh to reno beach oh beyond 5nm
offshoreline to us-canadian border-
reno beach to the islands oh beyond 5nm off shoreline to us-
canadian border-
948 am edt sun may 31 2026

.this afternoon...east winds 10 knots or less. waves 1 foot or
less. 
.tonight...southeast winds 5 to 10 knots becoming light and
variable. waves 1 foot or less. 
.monday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.monday night...east winds 5 to 10 knots becoming northeast.
waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...north winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 

$$

fzus61 kcle 311348
glfle 
expires:202605312015;;951257

open lake forecast for lake erie
national weather service cleveland oh
948 am edt sun may 31 2026

for waters beyond five nautical miles of shore on lake erie

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 30.20 inches will persist across the region through
the week.


lez164>166-312015-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-
948 am edt sun may 31 2026

.this afternoon...east winds 10 knots or less becoming northeast.
waves 1 foot or less. 
.tonight...east winds 10 knots or less becoming west. waves
1 foot or less. 
.monday...north winds 10 knots or less becoming east. waves
1 foot or less. 
.monday night...northeast winds 5 to 10 knots. waves 1 to 2 feet.
.tuesday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...north winds less than 10 knots becoming south. waves
1 foot or less. 
.thursday...southwest winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 

$$

fzus61 kcle 311348
glfle 
expires:202605312015;;951258

open lake forecast for lake erie
national weather service cleveland oh
948 am edt sun may 31 2026

for waters beyond five nautical miles of shore on lake erie

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 30.20 inches will persist across the region through
the week.


lez061-167>169-312015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
948 am edt sun may 31 2026

.this afternoon...west winds 10 knots or less becoming northwest
10 to 15 knots. waves 2 feet or less. 
.tonight...southwest winds 5 to 15 knots becoming northwest less
than 10 knots. waves 2 feet or less. 
.monday...north winds 10 knots or less becoming northeast. waves
1 foot or less. 
.monday night...northeast winds 5 to 10 knots. waves 1 foot or
less. 
.tuesday...northeast winds 10 knots or less becoming north. waves
1 foot or less. 
.wednesday...north winds less than 10 knots becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 10 knots or less increasing to 10 to
15 knots. waves 2 feet or less. 

$$

fzus63 kdtx 311337
glfsc 
expires:202605312145;;951010

lake st clair forecast
national weather service detroit/pontiac mi
937 am edt sun may 31 2026

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, governs great lakes
conditions this weekend into next week. dry and overall favorable
marine weather is expected.


lcz460-312145-
lake st clair-
937 am edt sun may 31 2026

.rest of today...light and variable winds becoming southeast 5 to 10
knots in the afternoon. mostly sunny. waves 2 feet or less.
.tonight...southeast winds 5 to 10 knots this evening becoming light
and variable. clear. waves 2 feet or less.
.monday...light and variable winds becoming northeast 5 to 10 knots
early in the afternoon. sunny. waves 2 feet or less.
.monday night...northeast winds 10 to 15 knots diminishing to 5 to
10 knots in the late evening and overnight. clear. waves 2 feet or
less.
.tuesday...northeast winds 5 to 10 knots increasing to 10 to 15
knots in the afternoon and evening. clear. waves 2 feet or less.
.wednesday...southeast winds 5 to 10 knots. clear. waves 2 feet or
less.
.thursday...southwest winds 10 to 15 knots. mostly clear. waves 2
feet or less.

$$

fzus63 kdtx 311336
glflh 
expires:202605312145;;951006

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt sun may 31 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, governs great lakes
conditions this weekend into next week. dry and overall favorable
marine weather is expected.


lhz361-362-312145-
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-
936 am edt sun may 31 2026

.rest of today...west winds 5 to 10 knots increasing to 10 to
15 knots late in the afternoon. waves 2 feet or less. 
.tonight...west winds 10 to 15 knots decreasing to 5 to 10 knots
after midnight...then veering to the west 5 to 10 knots early in
the morning. waves 2 to 4 feet subsiding to 1 to 3 feet early in
the morning. 
.monday...northeast winds 5 to 10 knots. waves 1 to 3 feet. 
.monday night...light and variable winds becoming north 5 to
10 knots in the late evening and overnight. waves 2 feet or less.
.tuesday...north winds 5 to 10 knots backing to the southwest
late in the afternoon. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots backing to the south .
waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots becoming south 10 to
15 knots early in the evening...then becoming southeast 5 to
10 knots by midnight. a chance of showers by midnight. waves 1 to
3 feet building to 2 to 4 feet . 


$$

fzus63 kdtx 311336
glflh 
expires:202605312145;;951007

open lake forecast for lake huron
national weather service detroit/pontiac mi
936 am edt sun may 31 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, governs great lakes
conditions this weekend into next week. dry and overall favorable
marine weather is expected.


lhz363-462>464-312145-
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-
936 am edt sun may 31 2026

.rest of today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds becoming northwest 5 to
10 knots early in the morning. waves 2 feet or less. 
.monday...north winds 5 to 10 knots veering to the northeast in
the late morning and early afternoon...then backing to the
northeast 5 to 10 knots early in the afternoon. waves 1 to
3 feet. 
.monday night...north winds 5 to 10 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. 
.tuesday...north winds 5 to 10 knots becoming light and variable.
waves 1 to 3 feet. 
.wednesday...light and variable winds becoming northeast 5 to
10 knots early in the evening...then veering to the south by
midnight. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots becoming south 10 to
15 knots . waves 2 feet or less building to 2 to 4 feet . 


$$

fzus63 kmkx 311345
glflm 
expires:202605312115;;951131

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
845 am cdt sun may 31 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...

widespread gales are not anticipated through the period across the 
open waters of lake michigan. 30.4 inch high pressure will remain
entrenched across the hudson bay through monday, resulting in 
generally north to northeasterly breezes. the center of the high 
will build south over lake michigan tuesday and tuesday night, 
leading to generally north-northeast winds over southern lake 
michigan and light westerlies further north. said high will 
gradually shift east on wednesday, allowing winds to trend 
southerly across the entirety of the lake. 29.7 inch low pressure
will shift from the canadian great plains into ontario wednesday 
night through thursday, resulting in increasing southwesterly 
winds across the waters. gusts between 20-25 knots will be 
possible over the northern third of the lake during this time 
frame. trends will need to be monitored for isolated gale force 
gusts, though the need for headlines is not anticipated at this 
time.

the weather pattern will trend more active regionally thursday night 
into next weekend, with multiple chances for showers and storms 
returning to the open waters. strong storm potential remains 
uncertain at this time, with trends being monitored over coming 
forecasts. 


lmz261-362-364-366-563-565-567-868-312115-
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-
845 am cdt sun may 31 2026

sheboygan wi to pentwater mi north...

.rest of today...south winds 5 to 10 kt becoming southwest. waves
1 to 2 ft. 
.tonight...southwest winds 10 to 15 kt veering to northeast.
waves 1 to 2 ft. 
.monday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.monday night...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. waves 2 to 4 ft. 
.tuesday...northeast winds 5 to 10 kt becoming northwest 10 to
20 kt in the afternoon. waves 1 to 3 ft. 
.tuesday night...northwest winds 10 to 20 kt becoming southwest
5 to 10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.thursday...southwest winds 15 to 25 kt becoming south. waves
2 to 4 ft building to 3 to 5 ft.  

$$

fzus63 kmkx 311345
glflm 
expires:202605312115;;951132

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
845 am cdt sun may 31 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...

widespread gales are not anticipated through the period across the 
open waters of lake michigan. 30.4 inch high pressure will remain
entrenched across the hudson bay through monday, resulting in 
generally north to northeasterly breezes. the center of the high 
will build south over lake michigan tuesday and tuesday night, 
leading to generally north-northeast winds over southern lake 
michigan and light westerlies further north. said high will 
gradually shift east on wednesday, allowing winds to trend 
southerly across the entirety of the lake. 29.7 inch low pressure
will shift from the canadian great plains into ontario wednesday 
night through thursday, resulting in increasing southwesterly 
winds across the waters. gusts between 20-25 knots will be 
possible over the northern third of the lake during this time 
frame. trends will need to be monitored for isolated gale force 
gusts, though the need for headlines is not anticipated at this 
time.

the weather pattern will trend more active regionally thursday night 
into next weekend, with multiple chances for showers and storms 
returning to the open waters. strong storm potential remains 
uncertain at this time, with trends being monitored over coming 
forecasts. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-312115-
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-
845 am cdt sun may 31 2026

sheboygan wi to pentwater mi south...

.rest of today...southeast winds 5 to 10 kt backing to north
10 to 15 kt. waves 1 to 3 ft. 
.tonight...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 1 to 2 ft. 
.monday...northeast winds 5 to 10 kt becoming north 10 to 15 kt.
waves 1 to 3 ft. 
.monday night...northeast winds 10 to 20 kt becoming east. waves
2 to 4 ft. 
.tuesday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 2 to 4 ft. 
.tuesday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt. waves 2 to 4 ft. 
.wednesday...east winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.thursday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. waves 2 to 4 ft building to 3 to 5 ft.  

$$

fzus63 kmqt 311401
glfls 
expires:202605312000;;951576

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz264-312000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt sun may 31 2026

.rest of today...southwest winds less than 10 knots. waves calm
to 2 feet. 
.tonight...southwest winds less than 10 knots backing east after
midnight. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots becoming east less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...east winds less than 10 knots veering southeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering northwest. a
chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 311401
glfls 
expires:202605312000;;951577

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz265-312000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt sun may 31 2026

.rest of today...southwest winds 5 to 15 knots backing southeast
in the afternoon, then backing east late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots diminishing to less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then diminishing to 5 to 15 knots late. waves
calm to 2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...southeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming southwest
10 to 20 knots. waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots veering west. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 311401
glfls 
expires:202605312000;;951578

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz266-312000-
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-
1001 am edt sun may 31 2026

.rest of today...southwest winds 5 to 15 knots diminishing to
less than 10 knots in the afternoon, then veering north late.
waves calm to 2 feet. 
.tonight...north winds less than 10 knots becoming east 5 to
15 knots late. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming northeast 5 to 15 knots late.
waves building to 1 to 3 feet. 
.monday night...northeast winds 5 to 15 knots veering east after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds less than 10 knots veering southeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots. waves calm to 2 feet.
.wednesday...southwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 2 to 4 feet. 
.thursday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of showers. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 

$$

fzus63 kmqt 311401
glfls 
expires:202605312000;;951579

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz267-312000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt sun may 31 2026

.rest of today...southwest winds less than 10 knots veering west
in the afternoon, then becoming northwest 5 to 15 knots late.
waves calm to 2 feet. 
.tonight...northwest winds less than 10 knots increasing to 5 to
15 knots after midnight, then veering east late. waves calm to
2 feet. 
.monday...east winds 5 to 15 knots backing north late. waves calm
to 2 feet. 
.monday night...north winds 5 to 15 knots veering northeast after
midnight. waves calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots. waves calm to 2 feet.
.wednesday...southwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 1 to 3 feet. 
.thursday...south winds 10 to 20 knots becoming southwest 15 to
25 knots. a chance of showers. waves subsiding to calm to 2 feet,
then building to 2 to 4 feet. 

$$

fzus63 kmqt 311401
glfls 
expires:202605312000;;951575

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz263-312000-
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-
1001 am edt sun may 31 2026

.rest of today...south winds less than 10 knots becoming
southwest 5 to 15 knots in the afternoon, then backing northeast
late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 2 to 4 feet. 
.monday night...northeast winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southwest after
midnight. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming south 5 to
15 knots. a chance of showers. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering northwest. a
chance of showers. waves 1 to 3 feet. 

$$

fzus63 kmqt 311401
glfls 
expires:202605312000;;951574

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sun may 31 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 30.2 inch high pressure gradually weakens today to 30.0 inches. 
another high pressure of 30.4 inches approaches the area from hudson 
bay tonight through monday, becoming centered over the great lakes 
by tuesday morning. the high weakens to 30.3 inches for tuesday 
night, then moves southeast on wednesday to the ohio river valley. 
meanwhile, a 29.9 inch trough approaches from the northwest, moving 
over lake superior on thursday.




lsz162-312000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sun may 31 2026 /901 am cdt sun may 31 2026/

.rest of today...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots backing north late. waves
calm to 2 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots late. waves building to 2 to 4 feet. 
.monday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$