fzus63 kmkx 290815
glflm 
expires:202609291515;;236616

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
315 am cdt tue sep 29 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...

the center of high pressure of 30.1 inches will shift over lake
huron today. look for areas of fog, dense possible, over the 
northern quarter of lake michigan through the early morning hours
today, but expect it to diminish by mid morning. southerly winds 
will develop by early afternoon and continue into thursday as a 
low pressure trough 29.6 inches approaches from the northern 
plains. wind gusts to 30 knots are possible wednesday afternoon 
along with building waves, particularly across central and 
northern portions of the lake.

expect northerly winds in the wake of the trough thursday night
into friday. strong high pressure of 30.3 inches will overspread
the great lakes friday night. a fast-moving trough of 29.7 inches
should cross lake superior early sunday.


lmz261-362-364-366-563-565-567-868-291515-
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-
315 am cdt tue sep 29 2026

sheboygan wi to pentwater mi north...

.today...south winds 5 to 10 kt increasing to 10 to 20 kt. patchy
fog this morning. waves 1 to 2 ft building to 2 to 4 ft. 
.tonight...south winds 10 to 20 kt increasing to 15 to 25 kt.
slight chance of showers in the evening, then showers likely with
slight chance of thunderstorms overnight. waves 3 to 5 ft
building to 4 to 6 ft occasionally to 8 ft. 
.wednesday...south winds to 30 kt. chance of showers. waves 4 to
7 ft occasionally to 9 ft building to 6 to 9 ft occasionally to
12 ft. 
.wednesday night...southwest winds to 30 kt diminishing to 15 to
25 kt. showers likely. waves 6 to 9 ft occasionally to 12 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.thursday...west winds 10 to 20 kt becoming northwest. chance of
showers. waves 2 to 4 ft. 
.thursday night...north winds 10 to 20 kt. waves 1 to 3 ft
building to 2 to 4 ft. 
.friday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday...east winds 10 to 15 kt becoming southeast. waves 1 to
3 ft.  

$$

fzus63 kmkx 290815
glflm 
expires:202609291515;;236617

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
315 am cdt tue sep 29 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...

the center of high pressure of 30.1 inches will shift over lake
huron today. look for areas of fog, dense possible, over the 
northern quarter of lake michigan through the early morning hours
today, but expect it to diminish by mid morning. southerly winds 
will develop by early afternoon and continue into thursday as a 
low pressure trough 29.6 inches approaches from the northern 
plains. wind gusts to 30 knots are possible wednesday afternoon 
along with building waves, particularly across central and 
northern portions of the lake.

expect northerly winds in the wake of the trough thursday night
into friday. strong high pressure of 30.3 inches will overspread
the great lakes friday night. a fast-moving trough of 29.7 inches
should cross lake superior early sunday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-291515-
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-
315 am cdt tue sep 29 2026

sheboygan wi to pentwater mi south...

.today...south winds 5 to 10 kt increasing to 10 to 20 kt. waves
1 to 2 ft building to 2 to 4 ft. 
.tonight...south winds 10 to 20 kt. chance of showers overnight.
waves 3 to 5 ft. 
.wednesday...south winds 15 to 25 kt increasing to 30 kt. chance
of showers in the morning, then showers likely in the afternoon.
waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft. 
.wednesday night...south winds to 30 kt becoming southwest 10 to
20 kt overnight. showers. waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.thursday...southwest winds 10 to 20 kt becoming northwest.
showers. waves 3 to 5 ft. 
.thursday night...north winds 10 to 20 kt. chance of showers.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.friday...northeast winds 10 to 20 kt becoming north 15 to 25 kt.
chance of showers. waves 4 to 7 ft occasionally to 9 ft. 
.saturday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 3 to 5 ft.  

$$