fzus63 kmkx 130806
glflm 
expires:202605131530;;479467

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 am cdt wed may 13 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...

gusty northwest winds will continue into today, as low pressure 
around 29.6 inches moves east of the region. a few gale force 
gusts may occur. lighter winds are then expected thursday, as high
pressure around 30.1 inches moves southeast through the region. 
breezy southerly winds are expected to develop friday, with a few 
gales possible friday afternoon and evening in northern portions 
of the lake. south to southwest winds then linger friday night 
into saturday. winds should then increase gradually for sunday, 
as a warm front moves northward into the region, ahead of low 
pressure around 29.2 inches in the central plains. 


lmz261-362-364-366-563-565-567-868-131530-
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-
306 am cdt wed may 13 2026

sheboygan wi to pentwater mi north...

.today...northwest winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.tonight...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.thursday...north winds 10 to 15 kt backing to southwest. waves
1 to 3 ft. 
.thursday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft. 
.friday...south winds to 30 kt increasing to gales to 35 kt.
chance of rain showers in the morning. waves 4 to 7 ft
occasionally to 9 ft building to 7 to 10 ft occasionally to
13 ft. 
.friday night...south gales to 35 kt becoming southwest to 30 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.saturday...southwest winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.sunday...northeast winds 10 to 20 kt becoming east. chance of
rain showers. waves 2 to 4 ft.  

$$

fzus63 kmkx 130806
glflm 
expires:202605131530;;479468

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 am cdt wed may 13 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...

gusty northwest winds will continue into today, as low pressure 
around 29.6 inches moves east of the region. a few gale force 
gusts may occur. lighter winds are then expected thursday, as high
pressure around 30.1 inches moves southeast through the region. 
breezy southerly winds are expected to develop friday, with a few 
gales possible friday afternoon and evening in northern portions 
of the lake. south to southwest winds then linger friday night 
into saturday. winds should then increase gradually for sunday, 
as a warm front moves northward into the region, ahead of low 
pressure around 29.2 inches in the central plains. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-131530-
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-
306 am cdt wed may 13 2026

sheboygan wi to pentwater mi south...

.today...northwest winds to 30 kt becoming north. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.tonight...north winds to 30 kt becoming northwest 10 to 15 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.thursday night...southeast winds 5 to 10 kt becoming south 10 to
20 kt overnight. waves 1 to 2 ft building to 1 to 3 ft. 
.friday...south winds to 30 kt. chance of rain showers. waves
4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally
to 12 ft. 
.friday night...south winds to 30 kt becoming southwest 10 to
20 kt. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday...southwest winds 10 to 15 kt becoming south. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...southeast winds 10 to 20 kt. chance of rain showers.
waves 2 to 4 ft.  

$$