fzus63 kmkx 291952
glflm 
expires:202608300330;;568847

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
252 pm cdt sat aug 29 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...

high pressure around 30.2 inches will continue to move  east of 
the lower great lakes into this evening, while low pressure 
deepens to around 29.6 inches in the central great plains tonight.
this will support modest to breezy southerly winds this afternoon
through this evening. tonight a warm front is expected to lift
northward over the lake, and the presence of a jet aloft may cause
some gusty southerly winds to 30 knots over the south half of the
lake on sunday. 

breezy southerlies then remain into monday as the low will lift
northeast from the plains toward western lake superior. scattered
thunderstorms will occur at times from tonight into next week. a 
weak cold front will finally arrive late tuesday night and 
wednesday with light northerly winds eventually taking hold.


lmz261-362-364-366-563-565-567-868-300330-
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-
252 pm cdt sat aug 29 2026

sheboygan wi to pentwater mi north...

.tonight...southwest winds 15 to 25 kt becoming south. chance of
showers and slight chance of thunderstorms this evening, then
showers likely overnight. waves 3 to 5 ft. 
.sunday...south winds 10 to 20 kt becoming southeast. patchy fog
in the morning. chance of showers in the morning, then chance of
showers and slight chance of thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...east winds 10 to 15 kt becoming southeast 10 to
20 kt. chance of showers in the evening. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.monday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers. waves 3 to 5 ft. 
.monday night...south winds 15 to 25 kt becoming west 10 to 15 kt
overnight. chance of showers overnight. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.tuesday night...south winds 10 to 15 kt becoming southwest 5 to
10 kt. chance of showers. waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt veering to north. waves
1 to 2 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 291952
glflm 
expires:202608300330;;568848

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
252 pm cdt sat aug 29 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...

high pressure around 30.2 inches will continue to move  east of 
the lower great lakes into this evening, while low pressure 
deepens to around 29.6 inches in the central great plains tonight.
this will support modest to breezy southerly winds this afternoon
through this evening. tonight a warm front is expected to lift
northward over the lake, and the presence of a jet aloft may cause
some gusty southerly winds to 30 knots over the south half of the
lake on sunday. 

breezy southerlies then remain into monday as the low will lift
northeast from the plains toward western lake superior. scattered
thunderstorms will occur at times from tonight into next week. a 
weak cold front will finally arrive late tuesday night and 
wednesday with light northerly winds eventually taking hold.


lmz080-669-671-673-675-777-779-870-872-874-876-878-300330-
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-
252 pm cdt sat aug 29 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt increasing to 15 to 25 kt.
slight chance of showers this evening, then chance of showers and
slight chance of thunderstorms overnight. waves 3 to 5 ft. 
.sunday...south winds to 30 kt diminishing to 15 to 25 kt. chance
of showers and slight chance of thunderstorms in the morning,
then slight chance of showers and thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers in the morning. waves 3 to 5 ft. 
.monday night...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...southwest winds 10 to 15 kt becoming south. waves 1 to
3 ft. 
.tuesday night...south winds 10 to 15 kt becoming southwest.
waves 1 to 2 ft. 
.wednesday...southwest winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$