fzus61 kbuf 312003
glflo 
expires:202606010300;;965876

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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.


loz062-010300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun may 31 2026

.tonight...west winds 5 to 15 knots becoming north less than
10 knots. waves 1 to 2 feet. 
.monday...north winds 10 knots or less becoming southeast. waves
1 foot or less. 
.monday night...east winds less than 10 knots. waves 1 foot or
less. 
.tuesday...west winds 10 knots or less. waves 1 foot or less. 
.tuesday night...west winds 5 to 10 knots becoming northwest.
waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.thursday...southwest winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...southwest winds 10 to 15 knots. a chance of showers
friday night. waves 1 to 3 feet. 

$$

fzus61 kbuf 312003
glflo 
expires:202606010300;;965877

open lake forecast for lake ontario
national weather service buffalo ny
402 pm 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>065-010300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun may 31 2026

.tonight...west winds 15 to 20 knots becoming north 5 to
15 knots. showers likely early, then a chance of showers late
this evening. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday...north winds 5 to 10 knots. waves 1 foot or less. 
.monday night...north winds 10 knots or less becoming west. waves
1 foot or less. 
.tuesday...west winds 10 knots or less. waves 1 foot or less. 
.tuesday night...west winds 5 to 10 knots. waves 1 foot or less. 
.wednesday...west winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.thursday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.friday...southwest winds 5 to 15 knots becoming west. a chance
of showers friday night. waves 2 feet or less. 

$$

fzus61 kcle 311938
glfle 
expires:202606010215;;965127

open lake forecast for lake erie
national weather service cleveland oh
338 pm 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 averaging 30.20 inches will persist across the 
great lakes through the week.


lez162-163-010215-
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-
338 pm edt sun may 31 2026

.tonight...east winds less than 10 knots. waves 1 foot or less. 
.monday...northeast winds 10 knots or less becoming east 10 to
15 knots. waves 2 feet or less. 
.monday night...east winds 5 to 15 knots becoming northeast.
waves 2 feet or less. 
.tuesday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.tuesday night...northeast winds 10 knots or less. waves 1 foot
or less. 
.wednesday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.friday...southwest winds 10 to 15 knots. a chance of showers
friday night. waves 1 to 2 feet. 

$$

fzus61 kcle 311938
glfle 
expires:202606010215;;965128

open lake forecast for lake erie
national weather service cleveland oh
338 pm 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 averaging 30.20 inches will persist across the 
great lakes through the week.


lez164>166-010215-
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-
338 pm edt sun may 31 2026

.tonight...east winds 10 knots or less becoming north. waves
1 foot or less. 
.monday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.monday night...northeast winds 10 to 15 knots. waves 1 to
2 feet. 
.tuesday...northeast winds 5 to 15 knots. waves 1 to 2 feet. 
.tuesday night...north winds 10 knots or less. waves around
1 foot. 
.wednesday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.friday...southwest winds 10 to 15 knots. a chance of showers
friday night. waves 1 to 3 feet. 

$$

fzus61 kcle 311938
glfle 
expires:202606010215;;965129

open lake forecast for lake erie
national weather service cleveland oh
338 pm 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 averaging 30.20 inches will persist across the 
great lakes through the week.


lez061-167>169-010215-
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-
338 pm edt sun may 31 2026

.tonight...west winds 10 knots or less becoming north. waves
2 feet or less. 
.monday...northeast winds 5 to 15 knots. waves 2 feet or less. 
.monday night...northeast winds 5 to 15 knots. waves 2 feet or
less. 
.tuesday...northeast winds 5 to 10 knots becoming north. waves
1 foot or less. 
.tuesday night...northwest winds 10 knots or less becoming north.
waves 1 foot or less. 
.wednesday...northwest winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots. waves 2 feet or less. 
.friday...southwest winds 10 to 15 knots. a chance of showers
friday night. waves 1 to 3 feet. 

$$

fzus63 kdtx 311952
glfsc 
expires:202606010400;;965447

lake st clair forecast
national weather service detroit/pontiac mi
352 pm 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...a weak backdoor cold front drops across the area
tonight, leading to breezy northeast winds monday mainly over
saginaw bay. high pressure governs conditions through most of the
work week.


lcz460-010400-
lake st clair-
352 pm edt sun may 31 2026

.tonight...light and variable winds. clear. waves 2 feet or less.
.monday...northeast winds 5 to 10 knots. 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...north winds 5 to 10 knots becoming northeast 10 to 15
knots early in the afternoon. sunny. waves 2 feet or less.
.tuesday night...northeast winds 10 to 15 knots becoming light and
variable. clear. waves 2 feet or less.
.wednesday...light and variable winds becoming southeast 5 to 10
knots in the afternoon and evening. clear. waves 2 feet or less.
.thursday...southwest winds 10 to 15 knots. mostly clear. waves 2
feet or less.
.friday...west winds 10 to 15 knots. partly cloudy. a chance of
showers. waves 2 feet or less.

$$

fzus63 kdtx 311951
glflh 
expires:202606010400;;965405

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 pm 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...a weak backdoor cold front drops across the area
tonight, leading to breezy northeast winds monday mainly over
saginaw bay. high pressure governs conditions through most of the
work week.


lhz361-362-010400-
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-
351 pm edt sun may 31 2026

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


$$

fzus63 kdtx 311951
glflh 
expires:202606010400;;965406

open lake forecast for lake huron
national weather service detroit/pontiac mi
351 pm 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...a weak backdoor cold front drops across the area
tonight, leading to breezy northeast winds monday mainly over
saginaw bay. high pressure governs conditions through most of the
work week.


lhz363-462>464-010400-
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-
351 pm edt sun may 31 2026

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


$$

fzus63 kmkx 311949
glflm 
expires:202606010315;;965376

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


lmz261-362-364-366-563-565-567-868-010315-
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-
249 pm cdt sun may 31 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 10 to 15 kt veering to northeast. waves
1 ft or less. 
.monday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.monday night...northeast winds 10 to 20 kt diminishing to 5 to
10 kt. waves 3 to 5 ft subsiding to 1 to 3 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 overnight. waves 1 to 2 ft subsiding to 1 ft or less. 
.wednesday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft. 
.wednesday night...south winds 10 to 20 kt becoming southwest.
waves 1 to 3 ft. 
.thursday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday...southwest winds 15 to 25 kt. chance of showers. waves
3 to 5 ft.  

$$

fzus63 kmkx 311949
glflm 
expires:202606010315;;965377

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


lmz080-669-671-673-675-777-779-870-872-874-876-878-010315-
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-
249 pm cdt sun may 31 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 15 kt becoming northeast. waves 1 ft
or less. 
.monday...northeast winds 5 to 10 kt becoming north 10 to 20 kt.
waves 1 to 2 ft building to 1 to 3 ft. 
.monday night...north winds 10 to 20 kt becoming east 10 to
15 kt. 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 overnight. waves 1 to 3 ft. 
.wednesday...east winds 5 to 10 kt becoming south. waves 1 to
2 ft. 
.wednesday night...southeast winds 10 to 15 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. 
.friday...southwest winds 10 to 20 kt becoming south. chance of
showers. waves 3 to 5 ft.  

$$

fzus63 kmqt 312001
glfls 
expires:202606010800;;965743

open lake forecast for lake superior
national weather service marquette mi
401 pm 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... 

high pressure of 30.0 inches remains over the great lakes this 
afternoon. 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 to the ohio river valley on 
wednesday. meanwhile, a 29.9 inch trough approaches from the 
northwest, moving over lake superior on thursday.




lsz264-010800-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 pm edt sun may 31 2026

.late this afternoon...southwest winds less than 10 knots. waves
calm to 2 feet. 
.tonight...west winds less than 10 knots backing east after
midnight, then increasing to 5 to 15 knots late. 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. waves calm to 2 feet.
.wednesday night...south winds 5 to 15 knots veering southwest
after midnight. waves building to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots veering west. a chance
of showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.friday...west winds 5 to 15 knots backing east. waves subsiding
to calm to 2 feet. 

$$

fzus63 kmqt 312001
glfls 
expires:202606010800;;965744

open lake forecast for lake superior
national weather service marquette mi
401 pm 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... 

high pressure of 30.0 inches remains over the great lakes this 
afternoon. 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 to the ohio river valley on 
wednesday. meanwhile, a 29.9 inch trough approaches from the 
northwest, moving over lake superior on thursday.




lsz265-010800-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 pm edt sun may 31 2026

.late this afternoon...east winds 5 to 15 knots. 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 diminishing to less than
10 knots after midnight, then backing north late. 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...southwest winds 5 to 15 knots backing southeast by
mid afternoon. waves calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots veering southwest
after midnight. waves calm to 2 feet. 
.thursday...southwest winds 15 to 25 knots veering west. a chance
of showers. waves calm to 2 feet. 
.friday...west winds 10 to 20 knots becoming southeast 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 312001
glfls 
expires:202606010800;;965745

open lake forecast for lake superior
national weather service marquette mi
401 pm 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... 

high pressure of 30.0 inches remains over the great lakes this 
afternoon. 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 to the ohio river valley on 
wednesday. meanwhile, a 29.9 inch trough approaches from the 
northwest, moving over lake superior on thursday.




lsz266-010800-
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-
401 pm edt sun may 31 2026

.late this afternoon...north winds less than 10 knots. waves calm
to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering north after
midnight, then veering east 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
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots backing northwest
late. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming east 5 to
15 knots 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 southeast by
mid afternoon. waves calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. 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. 
.friday...northwest winds 10 to 20 knots becoming east 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 312001
glfls 
expires:202606010800;;965746

open lake forecast for lake superior
national weather service marquette mi
401 pm 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... 

high pressure of 30.0 inches remains over the great lakes this 
afternoon. 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 to the ohio river valley on 
wednesday. meanwhile, a 29.9 inch trough approaches from the 
northwest, moving over lake superior on thursday.




lsz267-010800-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 pm edt sun may 31 2026

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northwest winds 5 to 15 knots veering north 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. waves calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.tuesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 1 to 3 feet. 
.thursday...south winds 10 to 20 knots veering southwest. a
chance of showers. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.friday...west winds 10 to 20 knots becoming east 5 to 15 knots.
waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 312001
glfls 
expires:202606010800;;965742

open lake forecast for lake superior
national weather service marquette mi
401 pm 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... 

high pressure of 30.0 inches remains over the great lakes this 
afternoon. 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 to the ohio river valley on 
wednesday. meanwhile, a 29.9 inch trough approaches from the 
northwest, moving over lake superior on thursday.




lsz263-010800-
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-
401 pm edt sun may 31 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast late. 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 less than 10 knots increasing to 5 to
15 knots by mid afternoon. 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 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots veering southwest
after midnight. a chance of showers after midnight. waves
building to 1 to 3 feet. 
.thursday...southwest winds 10 to 20 knots veering west. a chance
of showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.friday...west winds 5 to 15 knots backing east. waves subsiding
to calm to 2 feet. 

$$

fzus63 kmqt 312001
glfls 
expires:202606010800;;965741

open lake forecast for lake superior
national weather service marquette mi
401 pm 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... 

high pressure of 30.0 inches remains over the great lakes this 
afternoon. 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 to the ohio river valley on 
wednesday. meanwhile, a 29.9 inch trough approaches from the 
northwest, moving over lake superior on thursday.




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun may 31 2026 /301 pm cdt sun may 31 2026/

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 2 to 4 feet. 
.monday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots late. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. 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 backing south by mid
afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots veering southwest
after midnight. 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 building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.friday...south winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$