fzus63 kmkx 090153
glflm 
expires:202505090930;;195854

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt thu may 8 2025

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 lake superior will shift
south across lake michigan and wisconsin on friday. a weak cold
front will then follow the high across lake michigan late friday 
night into saturday morning. thus brisk north winds over southern
lake michigan early this evening will diminish later tonight. 
winds will then become light and variable, but will become south 
to southwest ahead of the approaching cold front friday afternoon 
and night. a brief period of northerly gusts behind the weak cold 
front can be expected on saturday. the winds will return to
southerly for sunday. 



lmz261-362-364-366-563-565-567-868-090930-
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-
853 pm cdt thu may 8 2025

sheboygan wi to pentwater mi north...

.rest of tonight...north winds 10 to 20 kt becoming northeast
late this evening, then diminishing to 10 to 15 kt after midnight
diminishing to 5 to 10 kt late. waves 3 to 5 ft subsiding to 1 to
3 ft. 
.friday...north winds less than 10 kt backing to southwest late
in the morning, then becoming 10 to 15 kt early in the afternoon
increasing to 10 to 20 kt late. waves 1 to 2 ft. 
.friday night...southwest winds 10 to 20 kt diminishing to 10 to
15 kt late in the evening, then becoming southwest 10 to 15 kt
after midnight becoming west 5 to 10 kt late. waves 1 to 3 ft. 
.saturday...north winds 10 to 20 kt. waves 1 to 3 ft building to
2 to 4 ft. 
.saturday night...north winds 10 to 20 kt becoming northeast 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...southeast winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...south winds 10 to 20 kt. waves 2 to 4 ft building
to 3 to 5 ft. 
.monday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday...south winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 090153
glflm 
expires:202505090930;;195855

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt thu may 8 2025

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 lake superior will shift
south across lake michigan and wisconsin on friday. a weak cold
front will then follow the high across lake michigan late friday 
night into saturday morning. thus brisk north winds over southern
lake michigan early this evening will diminish later tonight. 
winds will then become light and variable, but will become south 
to southwest ahead of the approaching cold front friday afternoon 
and night. a brief period of northerly gusts behind the weak cold 
front can be expected on saturday. the winds will return to
southerly for sunday. 



lmz080-669-671-673-675-777-779-870-872-874-876-878-090930-
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-
853 pm cdt thu may 8 2025

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 15 to 25 kt becoming northeast
10 to 20 kt late this evening, then becoming east after midnight
diminishing to 10 to 15 kt late. waves 4 to 7 ft occasionally to
9 ft subsiding to 3 to 5 ft. 
.friday...northeast winds 5 to 10 kt backing to northwest. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.friday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.saturday...west winds 10 to 20 kt becoming north. waves 1 to
3 ft building to 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt becoming northeast
10 to 15 kt. waves 3 to 5 ft. 
.sunday...southeast winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...southeast winds 10 to 15 kt becoming south. waves
2 to 4 ft. 
.monday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.tuesday...south winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 2 to 4 ft.  

$$