fzus63 kmkx 170800
glflm 
expires:202610171500;;241934

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 17 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...

low pressure around 29.4 inches has moved well east of the region,
as strong high pressure around 30.6 inches remains over the 
central plains but begins to nudge in. scattered showers will 
linger this morning over the southern half of lake michigan. a 
few rumbles of thunder and some isolated waterspout potential will
remain over the south half of lake michigan.

as the high shifts toward the ohio river valley today, strong low
pressure around 29.0 inches will develop in south central canada,
shifting toward and into hudson bay on sunday. this will likely 
bring southwest gales to far northern portions of lake michigan 
tonight into sunday night. gale warning is now in effect from 9z 
sunday until 6z monday for the northern third of lake michigan.

high pressure around 30.5 inches should develop east northeast
of the region next week, bringing dry conditions and light to
modest winds.


lmz366-565-567-868-171500-
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-
300 am cdt sat oct 17 2026

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

.today...west winds 10 to 15 kt increasing to 10 to 20 kt late
this morning, then becoming southwest 15 to 25 kt early this
afternoon increasing to 30 kt late. waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft building to 8 to 11 ft occasionally to 14 ft. 
.sunday...southwest winds to 30 kt increasing to gales to 35 kt.
waves 10 to 14 ft occasionally to 18 ft. 
.sunday night...southwest gales to 35 kt diminishing to 15 to
25 kt overnight. waves 8 to 12 ft occasionally to 16 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.monday...southwest winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...south winds 10 to 15 kt diminishing to less than
10 kt. waves 1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt becoming south. waves 1 ft
or less. 
.wednesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 170800
glflm 
expires:202610171500;;241935

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
300 am cdt sat oct 17 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...

low pressure around 29.4 inches has moved well east of the region,
as strong high pressure around 30.6 inches remains over the 
central plains but begins to nudge in. scattered showers will 
linger this morning over the southern half of lake michigan. a 
few rumbles of thunder and some isolated waterspout potential will
remain over the south half of lake michigan.

as the high shifts toward the ohio river valley today, strong low
pressure around 29.0 inches will develop in south central canada,
shifting toward and into hudson bay on sunday. this will likely 
bring southwest gales to far northern portions of lake michigan 
tonight into sunday night. gale warning is now in effect from 9z 
sunday until 6z monday for the northern third of lake michigan.

high pressure around 30.5 inches should develop east northeast
of the region next week, bringing dry conditions and light to
modest winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-171500-
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-
300 am cdt sat oct 17 2026

sheboygan wi to pentwater mi south...

.today...north winds 10 to 15 kt becoming west 10 to 20 kt late
this morning, then becoming southwest 15 to 25 kt early this
afternoon increasing to 30 kt late. waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.sunday...southwest winds to 30 kt becoming south gales to 35 kt.
waves 8 to 11 ft occasionally to 14 ft building to 10 to 14 ft
occasionally to 18 ft. 
.sunday night...southwest gales to 35 kt diminishing to 15 to
25 kt overnight. waves 8 to 12 ft occasionally to 16 ft subsiding
to 5 to 8 ft occasionally to 10 ft. 
.monday...southwest winds 10 to 20 kt becoming south 10 to 15 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.monday night...south winds 10 to 15 kt becoming southeast less
than 10 kt. waves 1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt. waves 1 ft or less. 
.wednesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$