fzus63 kmkx 201400
glflm 
expires:202610202115;;887394

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
900 am 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 southeast ontario will 
slowly drift east through wednesday. another high pressure system 
around 30.4 inches will move in from the great plains later in the
week. winds will remain light to modest through the week. east 
winds will prevail today, with southerly winds on wednesday and 
light and variable winds on thursday. breezy south winds may 
return by saturday, as low pressure moves from south central 
canada toward hudson bay.


lmz261-362-364-366-563-565-567-868-202115-
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-
900 am cdt tue oct 20 2026

sheboygan wi to pentwater mi north...

.rest of today...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.tonight...southeast winds 10 to 20 kt becoming south. patchy
dense fog in the evening, then patchy fog overnight. waves 1 to
2 ft. 
.wednesday...southwest winds 10 to 15 kt increasing to 10 to
20 kt. patchy dense fog in the morning. waves 1 to 3 ft. 
.wednesday night...southwest winds 10 to 15 kt veering to north.
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 3 ft. 
.friday...southeast winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 201400
glflm 
expires:202610202115;;887395

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
900 am 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 southeast ontario will 
slowly drift east through wednesday. another high pressure system 
around 30.4 inches will move in from the great plains later in the
week. winds will remain light to modest through the week. east 
winds will prevail today, with southerly winds on wednesday and 
light and variable winds on thursday. breezy south winds may 
return by saturday, as low pressure moves from south central 
canada toward hudson bay.


lmz080-669-671-673-675-777-779-870-872-874-876-878-202115-
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-
900 am cdt tue oct 20 2026

sheboygan wi to pentwater mi south...

.rest of today...east winds 5 to 10 kt. patchy fog through mid
morning. waves 1 ft or less. 
.tonight...east winds 5 to 10 kt becoming south. patchy dense fog
overnight. waves 1 to 2 ft. 
.wednesday...south winds 5 to 10 kt. waves 1 to 2 ft. 
.wednesday night...south winds 5 to 10 kt veering to west. waves
1 ft or less. 
.thursday...northeast winds 5 to 10 kt. waves 1 ft or less. 
.thursday night...northeast winds 5 to 10 kt becoming southeast.
waves 1 to 2 ft building to 1 to 3 ft. 
.friday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft.  

$$