fzus63 kmkx 201947
glflm 
expires:202610210330;;901451

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
247 pm cdt tue oct 20 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 30.5 inches over southern quebec will slowly
drift east through wednesday. another high pressure system around
30.4 inches will move in from the northern plains later in the 
week. winds will remain light to modest through the week. 

patchy dense fog may occur for locations closer to the western
shoreline of lake michigan tonight into wednesday morning.

increasing southeast winds friday into friday night may become 
breezy south winds on saturday into saturday night, as low 
pressure moves from the northern plains into hudson bay. a cold 
front should move southeast through the region sunday into monday,
shifting winds to the north and northeast behind it.


lmz261-362-364-366-563-565-567-868-210330-
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-
247 pm cdt tue oct 20 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 15 kt becoming southwest. waves 1 to
2 ft. 
.wednesday...southwest winds 10 to 20 kt. patchy dense fog in the
morning near the western shore. waves 1 to 3 ft. 
.wednesday night...southwest winds 5 to 10 kt veering to
northeast. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt. waves 1 ft or less. 
.thursday night...east winds 5 to 10 kt becoming southeast. waves
1 to 2 ft. 
.friday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...south winds 10 to 20 kt. waves 2 to 4 ft building
to 3 to 5 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally
to 10 ft. 
.sunday...southwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 201947
glflm 
expires:202610210330;;901452

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
247 pm cdt tue oct 20 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 30.5 inches over southern quebec will slowly
drift east through wednesday. another high pressure system around
30.4 inches will move in from the northern plains later in the 
week. winds will remain light to modest through the week. 

patchy dense fog may occur for locations closer to the western
shoreline of lake michigan tonight into wednesday morning.

increasing southeast winds friday into friday night may become 
breezy south winds on saturday into saturday night, as low 
pressure moves from the northern plains into hudson bay. a cold 
front should move southeast through the region sunday into monday,
shifting winds to the north and northeast behind it.


lmz080-669-671-673-675-777-779-870-872-874-876-878-210330-
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-
247 pm cdt tue oct 20 2026

sheboygan wi to pentwater mi south...

.tonight...east winds 5 to 10 kt veering to south. patchy dense
fog overnight near the western shore. waves 1 ft or less. 
.wednesday...southwest winds 5 to 10 kt becoming south. waves
1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt veering to northwest.
waves 1 ft or less. 
.thursday...northeast winds 5 to 10 kt. waves 1 ft or less. 
.thursday night...east winds 5 to 10 kt becoming southeast. waves
1 ft or less building to 1 to 3 ft. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...southeast winds 10 to 20 kt becoming south. waves
2 to 4 ft building to 3 to 5 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft. 
.sunday...southwest winds 10 to 20 kt. waves 3 to 5 ft.  

$$