fzus63 kmkx 281955
glflm 
expires:202608290315;;515946

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 pm cdt fri aug 28 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 30.1 inch will dominate the great lakes
region through tonight, moving into the northeast into saturday
as low pressure deepens to around 29.6 inches in the great
plains. this will allow for strengthening southwesterly winds
into sunday. a warm front from this low will lead to
thunderstorm potential in the northern half of the lake saturday
afternoon. low pressure is expected to lift into the northern 
plains sunday into monday, bringing chances for thunderstorms 
to the rest of the lake as well. low pressure lifts into
northern manitoba monday night, with winds remaining
southwesterly through wednesday. off and on thunderstorms are 
possible through wednesday as well.


lmz261-362-364-366-563-565-567-868-290315-
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-
255 pm cdt fri aug 28 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt becoming southwest. waves 2 to
4 ft. 
.saturday...southwest winds 10 to 20 kt increasing to 30 kt.
chance of showers in the afternoon. waves 3 to 5 ft. 
.saturday night...southwest winds to 30 kt becoming south 15 to
25 kt. chance of showers. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...south winds to 30 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft. 
.sunday night...southeast winds 15 to 25 kt becoming south 10 to
20 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.monday...south winds 15 to 25 kt. chance of showers. waves 3 to
5 ft. 
.monday night...south winds 15 to 25 kt becoming southwest 10 to
15 kt. waves 3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt. chance of showers. waves
1 to 3 ft. 
.wednesday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 281955
glflm 
expires:202608290315;;515947

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
255 pm cdt fri aug 28 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 30.1 inch will dominate the great lakes
region through tonight, moving into the northeast into saturday
as low pressure deepens to around 29.6 inches in the great
plains. this will allow for strengthening southwesterly winds
into sunday. a warm front from this low will lead to
thunderstorm potential in the northern half of the lake saturday
afternoon. low pressure is expected to lift into the northern 
plains sunday into monday, bringing chances for thunderstorms 
to the rest of the lake as well. low pressure lifts into
northern manitoba monday night, with winds remaining
southwesterly through wednesday. off and on thunderstorms are 
possible through wednesday as well.


lmz080-669-671-673-675-777-779-870-872-874-876-878-290315-
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-
255 pm cdt fri aug 28 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt becoming southwest. waves 2 to
4 ft. 
.saturday...southwest winds 10 to 20 kt becoming south 15 to
25 kt. chance of showers in the afternoon. waves 3 to 5 ft. 
.saturday night...south winds 15 to 25 kt. chance of showers.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday...south winds to 30 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft. 
.sunday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers. waves 3 to 5 ft subsiding to 2 to 4 ft.
.monday...south winds 15 to 25 kt. waves 3 to 5 ft. 
.monday night...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 3 to 5 ft. 
.tuesday...southwest winds 10 to 15 kt. chance of showers. waves
2 to 4 ft. 
.wednesday...southwest winds 10 to 15 kt. waves 1 to 2 ft.  

$$