fzus63 kdtx 231340
glflh 
expires:202608232145;;226065

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.


lhz361-232145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 am edt sun aug 23 2026

.rest of today...northwest winds 20 to 25 knots with gusts to
around 30 knots. waves 6 to 9 feet. waves occasionally around
12 feet. 
.tonight...northwest winds 20 to 25 knots with gusts to around
30 knots. a chance of showers. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.monday...northwest winds 20 to 25 knots decreasing to 15 to
20 knots in the late morning and afternoon. gusts to 30 knots. a
chance of showers in the morning. waves 6 to 9 feet. waves
occasionally around 12 feet. 
.monday night...northwest winds 15 to 20 knots decreasing to 5 to
10 knots. waves 3 to 5 feet subsiding to 2 to 4 feet after
midnight. 
.tuesday...northwest winds 5 to 10 knots becoming light and
variable...then becoming south 5 to 10 knots late in the evening.
waves 2 feet or less. 
.wednesday...south winds 5 to 10 knots becoming southeast 10 to
15 knots until early evening...then becoming south 5 to 10 knots
by midnight. a chance of showers early in the morning. a chance
of thunderstorms. rain showers . waves 1 to 3 feet building to
3 to 5 feet . 
.thursday...southwest winds 10 to 15 knots veering to the
northwest . a chance of showers. waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and early afternoon...then
building to 2 to 4 feet . 


$$

fzus63 kdtx 231340
glflh 
expires:202608232145;;226066

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.


lhz362-363-232145-
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-
940 am edt sun aug 23 2026

.rest of today...northwest winds to 30 knots. a chance of
waterspouts late in the morning. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.tonight...northwest winds to 30 knots. a chance of waterspouts
in the evening. a chance of showers in the evening...then showers
likely after midnight. waves 10 to 14 feet. waves occasionally
around 18 feet. 
.monday...northwest winds to 30 knots decreasing to 20 to
25 knots in the late morning and afternoon. waves 10 to 14 feet.
waves occasionally around 18 feet. 
.monday night...northwest winds 15 to 20 knots with gusts to
around 30 knots decreasing to 10 to 15 knots after midnight.
waves 6 to 9 feet subsiding to 3 to 5 feet after midnight. waves
occasionally around 12 feet. 
.tuesday...northwest winds 5 to 10 knots becoming light and
variable...then becoming southeast 5 to 10 knots late in the
evening. waves 2 to 4 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. a chance of showers in the late
morning and early afternoon. rain showers likely. a chance of
thunderstorms by midnight. waves 1 to 3 feet building to 3 to
5 feet. 
.thursday...southwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming west 10 to 15 knots
by midnight. a chance of showers. waves 2 to 4 feet. 


$$

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 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.  

$$