fzus63 kmkx 071921
glflm 
expires:202605080330;;179858

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 pm cdt thu may 7 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...

weak high pressure of 29.9 inches slides further away from the 
area overnight. incrasing southerly winds develop on friday
resulting in building waves, with gusty southwest to west winds 
expected on saturday. the next cold front sweeps across the area 
late saturday night into sunday bringing a shift of the winds
to the northwest as high pressure around 30.2 inches builds 
into the region sunday afternoon into monday.


lmz261-362-364-366-563-565-567-868-080330-
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-
221 pm cdt thu may 7 2026

sheboygan wi to pentwater mi north...

.tonight...southwest winds 10 to 20 kt diminishing to 5 to 10 kt.
waves 1 to 3 ft. 
.friday...southwest winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then becoming south 10 to 20 kt in the
afternoon. waves 2 to 4 ft. 
.friday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft. 
.saturday...southwest winds 10 to 20 kt becoming west. chance of
rain showers. waves 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt diminishing to
10 to 15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...northwest winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 3 ft. 
.monday...northwest winds 10 to 15 kt backing to southwest 10 to
20 kt. waves 1 to 2 ft. 
.tuesday...southeast winds 10 to 20 kt. chance of rain showers.
waves 1 to 3 ft building to 3 to 5 ft.  

$$

fzus63 kmkx 071921
glflm 
expires:202605080330;;179859

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
221 pm cdt thu may 7 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...

weak high pressure of 29.9 inches slides further away from the 
area overnight. incrasing southerly winds develop on friday
resulting in building waves, with gusty southwest to west winds 
expected on saturday. the next cold front sweeps across the area 
late saturday night into sunday bringing a shift of the winds
to the northwest as high pressure around 30.2 inches builds 
into the region sunday afternoon into monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-080330-
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-
221 pm cdt thu may 7 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 15 kt becoming southwest. waves 1 to
2 ft. 
.friday...southwest winds 5 to 10 kt increasing to 10 to 15 kt
late in the morning, then becoming south early in the afternoon
increasing to 10 to 20 kt late. waves 2 to 4 ft. 
.friday night...south winds 10 to 20 kt becoming southwest. waves
3 to 5 ft. 
.saturday...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 5 to
10 kt overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft. 
.sunday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.monday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft. 
.tuesday...southeast winds 10 to 20 kt increasing to 15 to 25 kt.
chance of rain showers. waves 2 to 4 ft building to 3 to 5 ft.  

$$