fzus61 kcle 231947
glfle 
expires:202608240230;;241295

open lake forecast for lake erie
national weather service cleveland oh
347 pm 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, followed by high pressure 30.00 inches monday 
night into wednesday. low pressure 29.80 inches will extend a cold
front east across the area late wednesday into thursday. high 
pressure 30.10 will return across the area on friday.


lez162-163-240230-
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-
347 pm edt sun aug 23 2026

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

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 231947
glfle 
expires:202608240230;;241296

open lake forecast for lake erie
national weather service cleveland oh
347 pm 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, followed by high pressure 30.00 inches monday 
night into wednesday. low pressure 29.80 inches will extend a cold
front east across the area late wednesday into thursday. high 
pressure 30.10 will return across the area on friday.


lez164-165-240230-
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-
347 pm edt sun aug 23 2026

.tonight...west winds 15 to 20 knots becoming northwest. a chance
of waterspouts this evening. showers likely with a chance of
thunderstorms early, then a chance of showers and thunderstorms
late this evening. waves 2 to 4 feet. 
.monday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.monday night...west winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.tuesday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.tuesday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...south winds 5 to 15 knots becoming southwest. 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 2 feet
or less. 
.friday...northwest winds 5 to 10 knots becoming northeast. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus63 kdtx 231938
glfsc 
expires:202608240345;;241081

lake st clair forecast
national weather service detroit/pontiac mi
338 pm 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 evening and overnight, favored
across lake huron, high pressure, 30.10 inches, will move over
the great lakes late tomorrow into tuesday.


lcz460-240345-
lake st clair-
338 pm edt sun aug 23 2026

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

$$

fzus63 kdtx 231938
glflh 
expires:202608240345;;241035

open lake forecast for lake huron
national weather service detroit/pontiac mi
338 pm 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 evening and overnight, favored
across lake huron, high pressure, 30.10 inches, will move over
the great lakes late tomorrow into tuesday.


lhz462>464-240345-
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-
338 pm edt sun aug 23 2026

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


$$

fzus63 kmkx 231900
glflm 
expires:202608240315;;239756

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


lmz261-362-364-366-563-565-567-868-240315-
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-
200 pm cdt sun aug 23 2026

sheboygan wi to pentwater mi north...

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

$$

fzus63 kmkx 231900
glflm 
expires:202608240315;;239757

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


lmz080-669-671-673-675-777-779-870-872-874-876-878-240315-
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-
200 pm cdt sun aug 23 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northwest. waves 4 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday...northwest winds 10 to 20 kt becoming north. waves 2 to
4 ft. 
.monday night...northeast winds 10 to 20 kt becoming northwest
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 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 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft. 
.wednesday...southwest winds to 30 kt. chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday night...southwest winds 15 to 25 kt becoming west
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft. 
.thursday...northwest winds 10 to 20 kt becoming north. waves
2 to 4 ft. 
.friday...north winds 10 to 20 kt. waves 2 to 4 ft.  

$$