fzus63 kmkx 120145
glflm 
expires:202507120915;;290056

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
845 pm cdt fri jul 11 2025

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 broad area of low pressure averaging 29.7 inches will move into
the northern great lakes tonight into saturday. areas of 
thunderstorms will continue across the lake tonight, some of 
which may have strong winds. winds will become southerly over the
entire lake overnight, until a cold front moves through the lake 
saturday afternoon and evening which will shift winds to the west 
saturday night.

high pressure of 30.0 inches will move across the southern tip of
lake michigan on sunday, with winds turning southerly and
southwesterly as the high moves east. southerly flow is then
expected into at least monday, before a front becomes stationary
over the central portion of the lake through mid week.


lmz261-362-364-366-563-565-567-868-120915-
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-
845 pm cdt fri jul 11 2025

sheboygan wi to pentwater mi north...

.rest of tonight...east winds 5 to 10 kt becoming south 10 to
15 kt. chance of showers and thunderstorms through early evening,
then showers likely with a chance of thunderstorms overnight.
waves 1 to 2 ft. 
.saturday...south winds 10 to 20 kt becoming southwest. chance of
showers and thunderstorms. waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 1 to 3 ft. 
.sunday...west winds 10 to 20 kt becoming southwest. waves 1 to
3 ft. 
.sunday night...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt. waves 1 to 3 ft. 
.monday night...southwest winds 10 to 20 kt becoming south 5 to
10 kt. waves 1 to 2 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.wednesday...northwest winds 10 to 20 kt becoming north. chance
of showers. waves 2 to 4 ft.  

$$

fzus63 kmkx 120145
glflm 
expires:202507120915;;290057

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
845 pm cdt fri jul 11 2025

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 broad area of low pressure averaging 29.7 inches will move into
the northern great lakes tonight into saturday. areas of 
thunderstorms will continue across the lake tonight, some of 
which may have strong winds. winds will become southerly over the
entire lake overnight, until a cold front moves through the lake 
saturday afternoon and evening which will shift winds to the west 
saturday night.

high pressure of 30.0 inches will move across the southern tip of
lake michigan on sunday, with winds turning southerly and
southwesterly as the high moves east. southerly flow is then
expected into at least monday, before a front becomes stationary
over the central portion of the lake through mid week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-120915-
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-
845 pm cdt fri jul 11 2025

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 5 to 10 kt becoming south
10 to 15 kt. showers likely with a chance of thunderstorms
through early evening, then chance of showers and thunderstorms
overnight. waves 1 to 2 ft. 
.saturday...southwest winds 10 to 20 kt. chance of showers and
slight chance of thunderstorms. waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 15 kt becoming northwest.
waves 1 to 3 ft. 
.sunday...west winds 10 to 15 kt becoming southwest. waves 1 to
3 ft. 
.sunday night...south winds 10 to 15 kt becoming southwest. waves
1 to 2 ft. 
.monday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 2 ft. 
.monday night...south winds 10 to 15 kt becoming southwest 5 to
10 kt. waves 1 to 2 ft. 
.tuesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.wednesday...southwest winds 10 to 20 kt veering to northwest.
chance of showers and thunderstorms. waves 2 to 4 ft.  

$$