fzus63 kmkx 090801
glflm 
expires:202609091515;;154383

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt wed sep 9 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 29.3 inches will continue lifting northward
through the hudson bay today, as high pressure of 30.2 inches
builds into the central plains. expect southwesterly winds to
shift to northwesterly this morning into this afternoon as a
cold front moves southeastward. thunderstorms are possible ahead
of and along this front. high pressure gradually moves eastward
into the ohio valley by friday, leading to light and variable
winds across the lake tonight through friday morning. winds then
become southerly and increase as low pressure deepens in the 
central plains once again. isolated gales are possible in the
northern third friday afternoon into friday night. low pressure
lifts into southern ontario friday night, bringing a cold front
with showers and storms and shifting winds to northwesterly 
saturday through saturday night. additional rain and storms are 
possible sunday into monday as a warm front from another 
developing low pressure system lifts through the region.


lmz261-362-364-366-563-565-567-868-091515-
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-
301 am cdt wed sep 9 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 15 to 25 kt increasing to 30 kt. chance
of showers and slight chance of thunderstorms this morning. waves
4 to 6 ft occasionally to 8 ft. 
.tonight...west winds to 30 kt becoming northwest 15 to 25 kt,
then diminishing to 10 to 20 kt late. waves 3 to 5 ft. 
.thursday...northwest winds 10 to 20 kt. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.thursday night...southeast winds 10 to 15 kt becoming south.
waves 1 to 2 ft. 
.friday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.saturday...southwest winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday...north winds 10 to 15 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 090801
glflm 
expires:202609091515;;154384

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
301 am cdt wed sep 9 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 29.3 inches will continue lifting northward
through the hudson bay today, as high pressure of 30.2 inches
builds into the central plains. expect southwesterly winds to
shift to northwesterly this morning into this afternoon as a
cold front moves southeastward. thunderstorms are possible ahead
of and along this front. high pressure gradually moves eastward
into the ohio valley by friday, leading to light and variable
winds across the lake tonight through friday morning. winds then
become southerly and increase as low pressure deepens in the 
central plains once again. isolated gales are possible in the
northern third friday afternoon into friday night. low pressure
lifts into southern ontario friday night, bringing a cold front
with showers and storms and shifting winds to northwesterly 
saturday through saturday night. additional rain and storms are 
possible sunday into monday as a warm front from another 
developing low pressure system lifts through the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-091515-
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-
301 am cdt wed sep 9 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 15 to 25 kt diminishing to 10 to 20 kt.
showers likely with slight chance of thunderstorms this morning.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...southwest winds 10 to 20 kt veering to northwest.
waves 2 to 4 ft. 
.thursday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 2 to 4 ft. 
.thursday night...northeast winds 10 to 15 kt veering to
southeast 5 to 10 kt. waves 1 to 3 ft. 
.friday...south winds 10 to 20 kt increasing to 30 kt in the
afternoon. waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...south winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday...south winds to 30 kt becoming southwest. waves 4 to
6 ft occasionally to 8 ft. 
.sunday...north winds 10 to 15 kt. waves 1 to 3 ft.  

$$