fzus63 kmkx 221953
glflm 
expires:202607230315;;426262

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt wed jul 22 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...

light and variable winds are expected tonight into thursday as high
pressure around 30.1 inches crosses wisconsin and southern lake
michigan. look for southerly winds to develop by friday as the
high progresses into the northeastern united states. a 29.5 
inch low pressure will move quickly from the canadian great 
plains toward quebec friday through saturday, maintaining south 
to southwest winds over lake michigan. the low will attempt to 
pull a cold front into the western great lakes on saturday, 
with the boundary slowly advancing south across the waters 
through saturday night, which will result in returning 
thunderstorm chances. a stationary front is expected to sit 
across lake michigan through the middle of next week, so there 
will be switches between northerly and southerly winds at times.
this front will be the focus for several rounds of
thunderstorms, possibly severe. 


lmz261-362-364-366-563-565-567-868-230315-
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-
253 pm cdt wed jul 22 2026

sheboygan wi to pentwater mi north...

.tonight...west winds 10 to 20 kt. waves 2 to 4 ft subsiding to
1 to 3 ft. 
.thursday...west winds 10 to 20 kt increasing to 15 to 25 kt late
in the morning, then becoming southwest early in the afternoon. 
waves 2 to 4 ft. 
.thursday night...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.friday...southwest winds 10 to 20 kt becoming south to 30 kt in
the afternoon. waves 2 to 4 ft building to 3 to 5 ft. 
.friday night...south winds to 30 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday...southwest winds to 30 kt becoming south. waves 4 to
6 ft occasionally to 8 ft. 
.saturday night...southwest winds to 30 kt veering to northwest
10 to 20 kt. chance of showers. waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft. 
.sunday...north winds 10 to 15 kt backing to west 15 to 25 kt.
waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 2 to 4 ft.  

$$

fzus63 kmkx 221953
glflm 
expires:202607230315;;426263

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 pm cdt wed jul 22 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...

light and variable winds are expected tonight into thursday as high
pressure around 30.1 inches crosses wisconsin and southern lake
michigan. look for southerly winds to develop by friday as the
high progresses into the northeastern united states. a 29.5 
inch low pressure will move quickly from the canadian great 
plains toward quebec friday through saturday, maintaining south 
to southwest winds over lake michigan. the low will attempt to 
pull a cold front into the western great lakes on saturday, 
with the boundary slowly advancing south across the waters 
through saturday night, which will result in returning 
thunderstorm chances. a stationary front is expected to sit 
across lake michigan through the middle of next week, so there 
will be switches between northerly and southerly winds at times.
this front will be the focus for several rounds of
thunderstorms, possibly severe. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-230315-
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-
253 pm cdt wed jul 22 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northwest 10 to 15 kt
late this evening, then diminishing to 5 to 10 kt after midnight
and becoming northwest 5 to 10 kt late. waves 3 to 5 ft subsiding
to 1 to 3 ft. 
.thursday...west winds 10 to 15 kt backing to south 10 to 20 kt.
waves 1 to 2 ft. 
.thursday night...south winds 10 to 20 kt becoming southwest
10 to 15 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 15 kt becoming south 15 to 25 kt
in the afternoon. waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.saturday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 3 to 5 ft. 
.saturday night...southwest winds 15 to 25 kt becoming west 10 to
20 kt. waves 3 to 5 ft. 
.sunday...northwest winds 10 to 20 kt veering to northeast 15 to
25 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 2 to 4 ft.  

$$