fzus61 kbuf 241402
glflo 
expires:202608242100;;282039

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon aug 24 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 surface trough averaging 29.8 inches will linger over 
the lake today. a ridge averaging 30.1 inches builds from the 
western and central great lakes tuesday through wednesday. the ridge 
will exit eastward thursday and allow a warm front to sweep 
northeastward across lake ontario. friday, a cold front should sweep 
eastward across the lake and be followed by a high pressure ridge 
averaging 30.0 inches and building from the upper midwest.


loz063>065-242100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon aug 24 2026

.rest of today...southwest winds 15 to 25 knots. a chance of
waterspouts. showers likely late this morning, then showers with
a chance of thunderstorms this afternoon. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.tonight...southwest winds 15 to 20 knots becoming west. a chance
of waterspouts. showers with a chance of thunderstorms in the
evening, then showers after midnight. showers likely late. waves
3 to 6 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of waterspouts in the morning. showers likely
in the morning, then a chance of showers in the afternoon. waves
3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots. a chance of showers in
the evening. waves 1 to 3 feet subsiding to 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. waves 1 foot or less building to
1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 5 to
15 knots. a chance of showers and thunderstorms during the day,
then showers likely with a chance of thunderstorms thursday
night. waves 1 to 3 feet. 
.friday...west winds 5 to 10 knots becoming northwest. a chance
of showers during the day. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 241402
glflo 
expires:202608242100;;282038

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon aug 24 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 surface trough averaging 29.8 inches will linger over 
the lake today. a ridge averaging 30.1 inches builds from the 
western and central great lakes tuesday through wednesday. the ridge 
will exit eastward thursday and allow a warm front to sweep 
northeastward across lake ontario. friday, a cold front should sweep 
eastward across the lake and be followed by a high pressure ridge 
averaging 30.0 inches and building from the upper midwest.


loz062-242100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt mon aug 24 2026

.rest of today...southwest winds 20 to 25 knots becoming west. a
chance of waterspouts. showers. waves 3 to 6 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.tonight...west winds 15 to 20 knots becoming northwest. a chance
of waterspouts. showers likely early, then a chance of showers
from late evening on. waves 3 to 6 feet subsiding to 2 to 4 feet.
.tuesday...northwest winds 10 to 15 knots becoming west. a chance
of waterspouts in the morning. a chance of showers. waves 1 to
3 feet. 
.tuesday night...west winds 10 knots or less becoming southwest.
waves 2 feet or less. 
.wednesday...southwest winds 10 knots or less becoming south. a
chance of showers and thunderstorms wednesday night. waves 1 foot
or less. 
.thursday...southwest winds 5 to 15 knots becoming west. showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms thursday night. waves 1 to
2 feet. 
.friday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 241350
glfle 
expires:202608242015;;281739

open lake forecast for lake erie
national weather service cleveland oh
950 am edt mon aug 24 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...
a trough averaging 29.90 inches will linger over the eastern 
great lakes today, followed by high pressure 30.00 inches tonight into
wednesday. low pressure 29.80 inches will track through the 
northern great lakes wednesday into thursday, pulling a cold front
across the lake. high pressure 30.10 inches will return friday.


lez061-166>169-242015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
950 am edt mon aug 24 2026

.this afternoon...west winds 15 to 25 knots. a chance of
waterspouts. a chance of showers with a slight chance of
thunderstorms. waves 4 to 7 feet. waves occasionally around
9 feet. 
.tonight...west winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of waterspouts through
the early overnight. a chance of showers early, then a slight
chance of showers from late evening on. waves 3 to 6 feet
subsiding to 1 to 3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.tuesday night...west winds 5 to 10 knots becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 15 knots. a chance of showers and
thunderstorms wednesday night. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers. waves 1 to 3 feet. 
.friday...northwest winds 5 to 10 knots becoming northeast. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 241350
glfle 
expires:202608242015;;281737

open lake forecast for lake erie
national weather service cleveland oh
950 am edt mon aug 24 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...
a trough averaging 29.90 inches will linger over the eastern 
great lakes today, followed by high pressure 30.00 inches tonight into
wednesday. low pressure 29.80 inches will track through the 
northern great lakes wednesday into thursday, pulling a cold front
across the lake. high pressure 30.10 inches will return friday.


lez162-163-242015-
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-
950 am edt mon aug 24 2026

.this afternoon...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.tuesday...northwest winds 10 knots or less becoming south. waves
1 foot or less. 
.tuesday night...southeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...southwest winds 5 to 10 knots. a chance of showers
and thunderstorms wednesday night. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots becoming northwest.
waves 1 foot or less. 
.friday...northwest winds 10 knots or less becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 241350
glfle 
expires:202608242015;;281738

open lake forecast for lake erie
national weather service cleveland oh
950 am edt mon aug 24 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...
a trough averaging 29.90 inches will linger over the eastern 
great lakes today, followed by high pressure 30.00 inches tonight into
wednesday. low pressure 29.80 inches will track through the 
northern great lakes wednesday into thursday, pulling a cold front
across the lake. high pressure 30.10 inches will return friday.


lez164-165-242015-
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-
950 am edt mon aug 24 2026

.this afternoon...west winds 15 to 20 knots. waves 3 to 5 feet. 
.tonight...west winds 5 to 15 knots becoming northwest. waves
2 to 4 feet subsiding to 1 to 2 feet. 
.tuesday...northwest winds 10 knots or less. waves 1 foot or
less. 
.tuesday night...south winds 10 knots or less. waves 1 foot or
less. 
.wednesday...south winds 10 to 15 knots becoming southwest. a
chance of showers and thunderstorms wednesday night. waves 2 feet
or less. 
.thursday...southwest winds 5 to 15 knots becoming west 10 knots
or less. waves 2 feet or less. 
.friday...northwest winds 5 to 10 knots becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 241401
glfsc 
expires:202608242215;;282035

lake st clair forecast
national weather service detroit/pontiac mi
1001 am edt mon aug 24 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...post-frontal northwest flow maintains breezy
conditions today. lingering chances for some showers this
morning with showers tapering off tonight as high pressure, 30.10
inches, begins to build in.


lcz460-242215-
lake st clair-
1001 am edt mon aug 24 2026

.today...west winds 15 to 20 knots becoming northwest 10 to 15 knots
late in the afternoon. partly sunny. waves 1 to 3 feet.
.tonight...northwest winds 10 to 15 knots diminishing to 5 to 10
knots in the late evening and overnight. partly cloudy. waves 2 feet
or less.
.tuesday...northwest winds 5 to 10 knots early in the morning
becoming light and variable. mostly sunny. waves 2 feet or less.
.tuesday night...south winds 5 to 10 knots. partly cloudy. waves 2
feet or less.
.wednesday...southwest winds 5 to 10 knots becoming south 10 to 15
knots in the afternoon and evening. partly sunny...then partly
cloudy with a chance of showers and thunderstorms in the evening.
waves 2 feet or less.
.thursday...northwest winds 10 to 15 knots. mostly clear. a chance
of showers and thunderstorms. waves 2 feet or less.
.friday...northeast winds 10 to 15 knots. mostly clear. waves 2 feet
or less.

$$

fzus63 kdtx 241401
glflh 
expires:202608242215;;282009

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 am edt mon aug 24 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...post-frontal northwest flow maintains breezy
conditions today. lingering chances for some rain showers this
morning with showers tapering off tonight as high pressure, 30.10
inches, begins to build in.


lhz462>464-242215-
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-
1001 am edt mon aug 24 2026

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


$$

fzus63 kdtx 241401
glflh 
expires:202608242215;;282008

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 am edt mon aug 24 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...post-frontal northwest flow maintains breezy
conditions today. lingering chances for some rain showers this
morning with showers tapering off tonight as high pressure, 30.10
inches, begins to build in.


lhz362-363-242215-
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-
1001 am edt mon aug 24 2026

.today...northwest winds 20 to 25 knots with gusts to around
30 knots. a chance of showers in the morning. waves 8 to 12 feet.
waves occasionally around 15 feet. 
.tonight...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 5 to 7 feet subsiding to 2 to 4 feet early in the
morning. waves occasionally around 10 feet. 
.tuesday...northwest winds 5 to 10 knots becoming light and
variable. waves 1 to 3 feet. 
.tuesday night...southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. waves 1 to
3 feet. 
.wednesday...south winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots late in the morning...then
decreasing to 10 to 15 knots late in the afternoon. a chance of
showers. a chance of thunderstorms late in the afternoon. rain
showers likely late in the afternoon. waves 3 to 5 feet. 
.thursday...west winds 5 to 10 knots becoming northwest 10 to
15 knots . waves 2 to 4 feet. 
.friday...northwest winds 10 to 15 knots becoming north 5 to
10 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 241401
glflh 
expires:202608242215;;282007

open lake forecast for lake huron
national weather service detroit/pontiac mi
1001 am edt mon aug 24 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...post-frontal northwest flow maintains breezy
conditions today. lingering chances for some rain showers this
morning with showers tapering off tonight as high pressure, 30.10
inches, begins to build in.


lhz361-242215-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
1001 am edt mon aug 24 2026

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


$$

fzus63 kmkx 241332
glflm 
expires:202608242115;;281298

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
832 am cdt mon aug 24 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...

29.7 inch low pressure remains nearly stationary over western 
quebec this afternoon, resulting in continued breezy northwest 
winds across the open waters of lake michigan. the breezy 
conditions will continue through through the remainder of the 
afternoon as the low lingers over the same general vicinity. 
currently centered from western lake superior toward north-central
wisconsin, 30.1 inch high pressure will gradually work over lake 
michigan this evening, bringing decreasing winds. expect readings 
to become light and variable near or just after sunset.

light and variable winds will continue into tonight as high pressure 
lingers over the western great lakes. the high will shift east into 
ontario tomorrow, resulting in a south-southwest wind shift across 
the waters. 29.7 inch low pressure will approach from the 
northern great plains tomorrow night into wednesday, reinforcing 
the south-southwesterly wind pattern. the low will cross lake 
michigan during the second half of the day wednesday, bringing a 
breezy northwest wind shift. gales are not expected as this 
occurs. showers and thunderstorms will accompany the 
approaching/passing surface low tomorrow night into wednesday 
afternoon. widespread severe weather is unlikely in these storms, 
though an isolated stronger storm with hail and gusty winds can't 
be ruled out. the next area of 30.1 inch high pressure will 
gradually build toward lake michigan from the northern great 
plains wednesday night through friday, bringing slowly decreasing 
winds. shower and storm chances return this weekend. whether any 
storms will be severe remains uncertain, with trends being 
monitored through this week. 


lmz261-362-364-366-563-565-567-868-242115-
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-
832 am cdt mon aug 24 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 15 to 25 kt becoming north.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tonight...north winds 10 to 20 kt diminishing to 5 to 10 kt.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tuesday...south winds 5 to 10 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.tuesday night...south winds 15 to 25 kt. chance of showers
overnight. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...south winds to 30 kt becoming southwest. chance of
showers in the morning, then chance of showers and thunderstorms
in the afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.wednesday night...west winds 15 to 25 kt becoming northwest
10 to 20 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.thursday...northwest winds 15 to 25 kt increasing to 30 kt.
waves 1 to 3 ft. 
.friday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 241332
glflm 
expires:202608242115;;281299

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
832 am cdt mon aug 24 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...

29.7 inch low pressure remains nearly stationary over western 
quebec this afternoon, resulting in continued breezy northwest 
winds across the open waters of lake michigan. the breezy 
conditions will continue through through the remainder of the 
afternoon as the low lingers over the same general vicinity. 
currently centered from western lake superior toward north-central
wisconsin, 30.1 inch high pressure will gradually work over lake 
michigan this evening, bringing decreasing winds. expect readings 
to become light and variable near or just after sunset.

light and variable winds will continue into tonight as high pressure 
lingers over the western great lakes. the high will shift east into 
ontario tomorrow, resulting in a south-southwest wind shift across 
the waters. 29.7 inch low pressure will approach from the 
northern great plains tomorrow night into wednesday, reinforcing 
the south-southwesterly wind pattern. the low will cross lake 
michigan during the second half of the day wednesday, bringing a 
breezy northwest wind shift. gales are not expected as this 
occurs. showers and thunderstorms will accompany the 
approaching/passing surface low tomorrow night into wednesday 
afternoon. widespread severe weather is unlikely in these storms, 
though an isolated stronger storm with hail and gusty winds can't 
be ruled out. the next area of 30.1 inch high pressure will 
gradually build toward lake michigan from the northern great 
plains wednesday night through friday, bringing slowly decreasing 
winds. shower and storm chances return this weekend. whether any 
storms will be severe remains uncertain, with trends being 
monitored through this week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-242115-
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-
832 am cdt mon aug 24 2026

sheboygan wi to pentwater mi south...

.rest of today...northwest winds 10 to 20 kt becoming north.
waves 3 to 5 ft. 
.tonight...north winds 10 to 20 kt diminishing to 5 to 10 kt late
in the evening, then becoming west after midnight becoming west
5 to 10 kt late. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.tuesday...southwest winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then becoming south 10 to 20 kt in the
afternoon. waves 1 to 3 ft building to 3 to 5 ft. 
.tuesday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...southwest winds to 30 kt. chance of showers and
thunderstorms in the afternoon. waves 4 to 7 ft occasionally to
9 ft. 
.wednesday night...southwest winds 15 to 25 kt becoming west
10 to 20 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.thursday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.friday...north winds 10 to 15 kt. waves 1 to 2 ft.  

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281985

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 30.1 inch high pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz266-242000-
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 mon aug 24 2026

.rest of today...northwest winds 15 to 25 knots diminishing to
10 to 20 knots late. waves 3 to 6 feet occasionally to 8 feet
subsiding to 1 to 3 feet. 
.tonight...northwest winds 5 to 15 knots backing southwest late.
waves subsiding to calm to 2 feet. 
.tuesday...south winds 5 to 15 knots becoming southeast 15 to
25 knots late. a slight chance of showers and thunderstorms by
mid afternoon. waves building to 1 to 3 feet. 
.tuesday night...south winds 15 to 25 knots. showers and a chance
of thunderstorms. waves building to 2 to 4 feet. 
.wednesday...southwest winds 10 to 20 knots veering west by mid
afternoon. showers likely through early afternoon. a slight
chance of thunderstorms. a slight chance of showers by mid
afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...west winds 15 to 25 knots veering northwest
after midnight. waves building to 2 to 4 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281984

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 30.1 inch high pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz265-242000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt mon aug 24 2026

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

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281983

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 30.1 inch high pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz264-242000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt mon aug 24 2026

.rest of today...north winds 5 to 15 knots backing west late.
waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots after midnight, then becoming south 5 to 15 knots late.
waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots backing southeast in the
afternoon. a chance of showers. a slight chance of thunderstorms
by mid afternoon. waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. showers and a chance of thunderstorms. waves
building to 1 to 3 feet. 
.wednesday...west winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.wednesday night...west winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.thursday...northwest winds 10 to 20 knots becoming north 5 to
15 knots. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281982

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 30.1 inch high pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz263-242000-
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 mon aug 24 2026

.rest of today...north winds 5 to 15 knots backing southwest
late. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots backing southeast late. a
chance of showers. a chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. showers through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves calm to
2 feet. 
.wednesday...west winds 15 to 25 knots. a chance of showers.
waves building to 1 to 3 feet. 
.wednesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281981

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 30.1 inch high pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon aug 24 2026 /901 am cdt mon aug 24 2026/

.rest of today...north winds less than 10 knots becoming south
5 to 15 knots in the afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast less than
10 knots after midnight, then veering east late. patchy fog after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots veering south in the
afternoon, then backing east late. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.tuesday night...north winds 5 to 15 knots backing west after
midnight. a chance of thunderstorms through midnight. a chance of
showers. waves calm to 2 feet. 
.wednesday...west winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.wednesday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281986

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 30.1 inch high pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz267-242000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt mon aug 24 2026

.rest of today...northwest winds 15 to 25 knots increasing to
20 to 30 knots in the afternoon, then diminishing to 15 to
25 knots late. waves 3 to 6 feet occasionally to 8 feet subsiding
to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing west late. waves subsiding
to calm to 2 feet. 
.tuesday...south winds 5 to 15 knots backing southeast in the
afternoon, then increasing to 10 to 20 knots late. waves calm to
2 feet. 
.tuesday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. showers and a chance of thunderstorms.
waves building to 2 to 4 feet. 
.wednesday...south winds 15 to 25 knots becoming west 10 to
20 knots by mid afternoon. showers and a slight chance of
thunderstorms. waves subsiding to calm to 2 feet. 
.wednesday night...west winds 10 to 20 knots becoming northwest
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.thursday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 

$$