fzus63 kmkx 290159
glflm 
expires:202604290915;;703298

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue apr 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 30.3 inches over the canadian prairies will 
gradually shift southeastward into the western great lakes by the 
end of the week. winds will shift to the north northeast tonight,
as a backdoor cold front moves southward across the lake. these
winds should linger into wednesday morning, before weakening in
the afternoon. 

as the high pressure system approaches and moves into the region 
by the end of the week, winds will generally remain light. light 
showers will be possible at times through the rest of the week, as
weak low pressure areas move through. 


lmz261-362-364-366-563-565-567-868-290915-
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-
859 pm cdt tue apr 28 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds 10 to 20 kt becoming north
10 to 15 kt after midnight, then diminishing to 5 to 10 kt late.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.wednesday...north winds 5 to 10 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.wednesday night...north winds 10 to 15 kt becoming northwest
5 to 10 kt. waves 1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...north winds 10 to 20 kt. waves 1 to 3 ft. 
.friday...northwest winds 10 to 20 kt becoming north. waves 1 to
3 ft. 
.friday night...northwest winds 10 to 20 kt. waves 1 to 3 ft. 
.saturday...northwest winds 10 to 20 kt becoming west. waves 1 to
3 ft. 
.sunday...west winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 290159
glflm 
expires:202604290915;;703299

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
859 pm cdt tue apr 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 30.3 inches over the canadian prairies will 
gradually shift southeastward into the western great lakes by the 
end of the week. winds will shift to the north northeast tonight,
as a backdoor cold front moves southward across the lake. these
winds should linger into wednesday morning, before weakening in
the afternoon. 

as the high pressure system approaches and moves into the region 
by the end of the week, winds will generally remain light. light 
showers will be possible at times through the rest of the week, as
weak low pressure areas move through. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-290915-
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-
859 pm cdt tue apr 28 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 5 to 10 kt veering to north
10 to 15 kt. slight chance of rain showers. waves 1 to 2 ft.
.wednesday...north winds 10 to 15 kt increasing to 10 to 20 kt.
slight chance of rain showers in the morning, then slight chance
of rain showers and thunderstorms in the afternoon. waves 2 to
4 ft. 
.wednesday night...north winds 10 to 20 kt becoming northwest
5 to 10 kt from late evening on. waves 1 to 3 ft subsiding to
1 to 2 ft. 
.thursday...northwest winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.friday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...north winds 10 to 15 kt becoming northwest 10 to
20 kt. waves 1 to 3 ft. 
.sunday...west winds 10 to 20 kt. waves 2 to 4 ft.  

$$