fzus63 kmkx 041353
glflm 
expires:202605042115;;001335

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 am cdt mon may 4 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...

no major changes to the going forecast this morning.

winds return to a southerly direction and become gusty again 
around dawn on this morning. winds will further increase this 
morning ahead of another cold front in association with low 
pressure of 29.0 inches moving across ontario. a short 6 hour 
period of gales is possible over the northern third of lake 
michigan between 10am and 4pm cdt. less certainty in gales given
the colder waters of the lake potentially inhibiting higher gusts
from mixing down. winds then ease through the afternoon from 
north to south over the lake as the cold front moves south. winds 
behind the front will become northwesterly.

the pressure gradient will then ease over the lake tuesday
through thursday, with light and persistent west to northwest 
winds occuring. light and variable winds may briefly occur at times 
as various weak surface ridges move across the lake.


lmz366-565-567-868-042115-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 am cdt mon may 4 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

.rest of today...south winds 10 to 20 kt becoming southwest to
30 kt. chance of rain showers and slight chance of thunderstorms
this afternoon. waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft. 
.tonight...west winds 10 to 20 kt becoming northwest 10 to 15 kt.
slight chance of rain showers and thunderstorms in the evening,
then chance of rain showers overnight. waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft. 
.tuesday...northwest winds 10 to 15 kt backing to southwest.
waves 1 to 3 ft. 
.tuesday night...west winds 5 to 10 kt veering to north 10 to
15 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt backing to southwest.
waves 1 to 2 ft. 
.wednesday night...southwest winds 5 to 10 kt becoming west.
waves 1 ft or less. 
.thursday...west winds 5 to 10 kt becoming southwest 10 to 15 kt.
waves 1 ft or less. 
.friday...northwest winds 5 to 10 kt backing to south. waves 1 to
2 ft.  

$$

fzus63 kmkx 041353
glflm 
expires:202605042115;;001336

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 am cdt mon may 4 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...

no major changes to the going forecast this morning.

winds return to a southerly direction and become gusty again 
around dawn on this morning. winds will further increase this 
morning ahead of another cold front in association with low 
pressure of 29.0 inches moving across ontario. a short 6 hour 
period of gales is possible over the northern third of lake 
michigan between 10am and 4pm cdt. less certainty in gales given
the colder waters of the lake potentially inhibiting higher gusts
from mixing down. winds then ease through the afternoon from 
north to south over the lake as the cold front moves south. winds 
behind the front will become northwesterly.

the pressure gradient will then ease over the lake tuesday
through thursday, with light and persistent west to northwest 
winds occuring. light and variable winds may briefly occur at times 
as various weak surface ridges move across the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-042115-
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 am cdt mon may 4 2026

sheboygan wi to pentwater mi south...

.rest of today...southwest winds 10 to 20 kt becoming south to
30 kt, then diminishing to 15 to 25 kt late. waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds 10 to 20 kt veering to northwest 10 to
15 kt. chance of rain showers and slight chance of thunderstorms
in the evening, then chance of rain showers overnight. waves 4 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.tuesday...northwest winds 10 to 15 kt veering to east. waves
1 to 3 ft. 
.tuesday night...southwest winds 5 to 10 kt becoming northwest
10 to 15 kt. waves 1 to 2 ft. 
.wednesday...northwest winds 10 to 15 kt becoming north. waves
1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt becoming west. waves
1 to 2 ft. 
.thursday...west winds 10 to 15 kt becoming southwest. waves 1 to
2 ft. 
.friday...west winds 10 to 15 kt becoming north. waves 1 to 2 ft.
 

$$