fzus61 kcle 231421
glfle 
expires:202608232015;;227634

open lake forecast for lake erie
national weather service cleveland oh
1021 am edt sun aug 23 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 29.80 will linger over the eastern great lakes 
through monday morning. high pressure 30.00 inches will gradually 
build into the region monday afternoon through tuesday night 
before departing to the east on wednesday. low pressure 29.80 
inches and a trailing cold front will move across the great lakes
late wednesday through thursday.


lez162-163-232015-
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-
1021 am edt sun aug 23 2026

.this afternoon...northwest winds 15 to 20 knots becoming west. a
chance of waterspouts late. a slight chance of showers and
thunderstorms late. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 15 to 20 knots becoming northwest. a chance
of waterspouts early. a slight chance of showers and
thunderstorms early. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...northwest winds 15 to 20 knots becoming west. waves
1 to 3 feet building to 2 to 4 feet. 
.monday night...west winds 15 to 20 knots becoming northwest and
diminishing to around 10 knots. waves 1 to 3 feet. 
.tuesday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers
wednesday night. waves 2 feet or less. 
.thursday...southwest winds 5 to 15 knots becoming northwest. a
chance of showers and thunderstorms during the day. waves 1 foot
or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 231421
glfle 
expires:202608232015;;227635

open lake forecast for lake erie
national weather service cleveland oh
1021 am edt sun aug 23 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 29.80 will linger over the eastern great lakes 
through monday morning. high pressure 30.00 inches will gradually 
build into the region monday afternoon through tuesday night 
before departing to the east on wednesday. low pressure 29.80 
inches and a trailing cold front will move across the great lakes
late wednesday through thursday.


lez164-165-232015-
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-
1021 am edt sun aug 23 2026

.this afternoon...northwest winds 15 to 20 knots becoming west. a
chance of waterspouts late. a slight chance of showers and
thunderstorms late. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tonight...west winds 15 to 20 knots becoming northwest. a chance
of waterspouts through the early overnight. a chance of showers
and thunderstorms in the evening, then a slight chance of showers
after midnight. waves 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming west. waves
2 to 4 feet building to 3 to 5 feet. 
.monday night...west winds 15 to 20 knots becoming northwest
10 to 15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.wednesday...southwest winds 5 to 15 knots becoming south. a
chance of showers and thunderstorms wednesday night. waves 2 feet
or less. 
.thursday...southwest winds 5 to 15 knots becoming northwest. a
chance of showers and thunderstorms during the day, then a chance
of showers thursday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 231340
glflh 
expires:202608232145;;226067

open lake forecast for lake huron
national weather service detroit/pontiac mi
940 am edt sun aug 23 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 brings breezy conditions
through monday. chances for some rain showers and an isolated
thunderstorm will return this afternoon and evening, favored
across lake huron, high pressure, 30.10 inches, willl move over
the great lakes late tomorrow into tuesday.


lhz462>464-232145-
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-
940 am edt sun aug 23 2026

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


$$

fzus63 kdtx 231339
glfsc 
expires:202608232145;;226062

lake st clair forecast
national weather service detroit/pontiac mi
939 am edt sun aug 23 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 brings breezy conditions
through monday. chances for some showers and an isolated
thunderstorm will return this afternoon and evening, favored
across lake huron, high pressure, 30.10 inches, willl move over
the great lakes late tomorrow into tuesday.


lcz460-232145-
lake st clair-
939 am edt sun aug 23 2026

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

$$

fzus63 kmkx 231343
glflm 
expires:202608232115;;226130

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
843 am cdt sun aug 23 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...

scattered shower chances continue over the northern third of lake 
michigan today, with a few waterspouts possible. 29.7 inch low 
pressure is centered near the ontario-quebec border, resulting in 
breezy northwest winds across the open waters of lake michigan. 
the breezy winds will continue through tonight as the low lingers 
in the same general vicinity. expecting most gusts to remain in 
the 25-30 knot range, though a few gusts approaching gale force 
are possible over the northern third of the lake. given the brief 
& isolated nature of any such gusts, not anticipating the need for
any gale headlines, but will be monitoring trends. 30.1 inch high
pressure will steadily build into the upper mississippi valley 
today, reaching the waters by monday afternoon. the high's arrival
will lead to decreasing winds, with conditions becoming light and
variable by monday evening. 

light and variable winds will continue monday night with high 
pressure lingering in the vicinity. the high will shift east into 
ontario by tuesday, resulting in a south-southwest wind shift across 
the waters. 29.7 inch low pressure will approach from the 
northern great plains tuesday 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 tuesday night into wednesday 
afternoon. it remains too early to tell if any of these storms 
could be severe, with trends being monitored through the beginning
of this week. 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. 


lmz261-362-364-366-563-565-567-868-232115-
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-
843 am cdt sun aug 23 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds to 30 kt becoming north. slight
chance of showers through mid morning. waves 4 to 7 ft
occasionally to 9 ft. 
.tonight...north winds to 30 kt becoming northwest. waves 4 to
7 ft occasionally to 9 ft. 
.monday...northwest winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...northwest winds 10 to 20 kt diminishing to 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.tuesday...southwest winds 10 to 15 kt increasing to 15 to 25 kt
in the afternoon. waves 1 to 2 ft building to 2 to 4 ft. 
.tuesday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers. waves 3 to 5 ft. 
.wednesday...southwest winds 15 to 25 kt becoming south to 30 kt.
showers likely with a chance of thunderstorms. waves 4 to 6 ft
occasionally to 8 ft. 
.thursday...northwest winds 10 to 20 kt increasing to 30 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 231343
glflm 
expires:202608232115;;226131

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
843 am cdt sun aug 23 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...

scattered shower chances continue over the northern third of lake 
michigan today, with a few waterspouts possible. 29.7 inch low 
pressure is centered near the ontario-quebec border, resulting in 
breezy northwest winds across the open waters of lake michigan. 
the breezy winds will continue through tonight as the low lingers 
in the same general vicinity. expecting most gusts to remain in 
the 25-30 knot range, though a few gusts approaching gale force 
are possible over the northern third of the lake. given the brief 
& isolated nature of any such gusts, not anticipating the need for
any gale headlines, but will be monitoring trends. 30.1 inch high
pressure will steadily build into the upper mississippi valley 
today, reaching the waters by monday afternoon. the high's arrival
will lead to decreasing winds, with conditions becoming light and
variable by monday evening. 

light and variable winds will continue monday night with high 
pressure lingering in the vicinity. the high will shift east into 
ontario by tuesday, resulting in a south-southwest wind shift across 
the waters. 29.7 inch low pressure will approach from the 
northern great plains tuesday 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 tuesday night into wednesday 
afternoon. it remains too early to tell if any of these storms 
could be severe, with trends being monitored through the beginning
of this week. 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. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-232115-
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-
843 am cdt sun aug 23 2026

sheboygan wi to pentwater mi south...

.rest of today...northwest winds to 30 kt becoming north. waves
5 to 8 ft occasionally to 10 ft. 
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.monday...northwest winds 10 to 20 kt becoming north. waves 2 to
4 ft. 
.monday night...northeast winds 10 to 15 kt backing to southwest.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tuesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.tuesday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.wednesday...southwest winds 15 to 25 kt increasing to 30 kt.
chance of showers and thunderstorms. waves 4 to 6 ft occasionally
to 8 ft. 
.thursday...northwest winds 10 to 20 kt becoming north. waves
2 to 4 ft.  

$$