fzus63 kmkx 211338
glflm 
expires:202610212130;;941267

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
838 am cdt wed oct 21 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...

a ridge of 30.3 inch high pressure is centered from the
mississippi river into ontario this morning, resulting in light
south to southwest winds across the open waters. winds will trend
light and variable tonight through thursday night as the surface 
ridge nudges east toward the ohio river and quebec. persistent
southerly winds will become established friday through the weekend
as a cold front moves through the northern great plains and 30.5
inch high pressure settles into the northeastern united states.
winds could be breezy at times, with widespread gales not
anticipated at this time. will continue to monitor for possible
increases through the second half of the week. aforementioned cold
front will cross the waters sunday night, bringing a northerly
wind shift through the first half of next week. rain showers are
possible along the passing front.


lmz261-362-364-366-563-565-567-868-212130-
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-
838 am cdt wed oct 21 2026

sheboygan wi to pentwater mi north...

.rest of today...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.tonight...southwest winds 5 to 10 kt veering to north. patchy
fog overnight. waves 1 to 2 ft. 
.thursday...northeast winds 5 to 10 kt. patchy fog. waves 1 ft or
less. 
.thursday night...east winds 5 to 10 kt becoming southeast.
patchy fog in the evening, then patchy dense fog overnight. waves
1 to 2 ft. 
.friday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.friday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally
to 9 ft. 
.sunday...southwest winds 15 to 25 kt becoming northwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.  

$$

fzus63 kmkx 211338
glflm 
expires:202610212130;;941268

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
838 am cdt wed oct 21 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...

a ridge of 30.3 inch high pressure is centered from the
mississippi river into ontario this morning, resulting in light
south to southwest winds across the open waters. winds will trend
light and variable tonight through thursday night as the surface 
ridge nudges east toward the ohio river and quebec. persistent
southerly winds will become established friday through the weekend
as a cold front moves through the northern great plains and 30.5
inch high pressure settles into the northeastern united states.
winds could be breezy at times, with widespread gales not
anticipated at this time. will continue to monitor for possible
increases through the second half of the week. aforementioned cold
front will cross the waters sunday night, bringing a northerly
wind shift through the first half of next week. rain showers are
possible along the passing front.


lmz080-669-671-673-675-777-779-870-872-874-876-878-212130-
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-
838 am cdt wed oct 21 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 5 to 10 kt. waves 1 to 2 ft. 
.tonight...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.
patchy fog in the evening, then patchy dense fog overnight. 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 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.saturday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally
to 9 ft. 
.sunday...southwest winds 10 to 20 kt. waves 3 to 5 ft.  

$$