fzus63 kmkx 052010
glflm 
expires:202608060315;;677279

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
310 pm cdt wed aug 5 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...

a stalled front is sitting over southern lake michigan this 
morning. light and variable winds can be expected through thursday
as the front shifts south and weakens and high pressure moves 
into the region. intermittent showers with a few thunderstorms 
are possible.

patchy marine fog is possible due to warm and moist air over the
region. the areal coverage of the fog is not able to discern due
to the high clouds over the lake. surface observations near the
lake are showing fog with visibility greater than one mile this
afternoon, and a ship ob over the center of the lake indicated
haze. so not thinking marine dense fog advisory at this time but
will continue to monitor trends through the night.

a prolonged period of south-southwest winds will then become 
established across lake michigan late thursday night through 
sunday, with the exception of northwest winds saturday morning 
with a brief cold frontal passage.


lmz261-362-364-366-563-565-567-868-060315-
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-
310 pm cdt wed aug 5 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 5 to 10 kt backing to east. slight chance
of showers this evening. patchy fog overnight. waves 1 ft or
less. 
.thursday...southeast winds 5 to 10 kt veering to southwest.
patchy fog in the morning. waves 1 ft or less. 
.thursday night...south winds 10 to 15 kt. waves 1 to 2 ft. 
.friday...south winds 10 to 20 kt. waves 1 to 3 ft. 
.friday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. chance of showers. waves 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest
10 to 15 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 15 kt becoming southwest 10 to 20 kt.
chance of showers. waves 1 to 3 ft.  

$$

fzus63 kmkx 052010
glflm 
expires:202608060315;;677280

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
310 pm cdt wed aug 5 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...

a stalled front is sitting over southern lake michigan this 
morning. light and variable winds can be expected through thursday
as the front shifts south and weakens and high pressure moves 
into the region. intermittent showers with a few thunderstorms 
are possible.

patchy marine fog is possible due to warm and moist air over the
region. the areal coverage of the fog is not able to discern due
to the high clouds over the lake. surface observations near the
lake are showing fog with visibility greater than one mile this
afternoon, and a ship ob over the center of the lake indicated
haze. so not thinking marine dense fog advisory at this time but
will continue to monitor trends through the night.

a prolonged period of south-southwest winds will then become 
established across lake michigan late thursday night through 
sunday, with the exception of northwest winds saturday morning 
with a brief cold frontal passage.


lmz080-669-671-673-675-777-779-870-872-874-876-878-060315-
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-
310 pm cdt wed aug 5 2026

sheboygan wi to pentwater mi south...

.tonight...southwest winds 10 to 15 kt becoming south 5 to 10 kt
late this evening, then becoming southwest after midnight
becoming southeast late. chance of showers and slight chance of
thunderstorms this evening, then chance of showers overnight.
patchy fog overnight. waves 1 to 2 ft. 
.thursday...southeast winds 5 to 10 kt backing to north. patchy
fog in the morning. slight chance of showers in the morning.
waves 1 to 2 ft. 
.thursday night...northeast winds 5 to 10 kt veering to
southwest. waves 1 ft or less. 
.friday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 ft or less building to 1 to 3 ft. 
.friday night...south winds 10 to 20 kt becoming southwest.
chance of showers overnight. waves 1 to 3 ft. 
.saturday...west winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 1 to 3 ft. 
.saturday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt becoming south. waves 1 to
3 ft. 
.monday...southwest winds 10 to 20 kt. showers likely with a
chance of thunderstorms. waves 1 to 3 ft.  

$$