fzus63 kmkx 211501
glflm 
expires:202512212230;;974842

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cst sun dec 21 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...

high pressure around 30.4 inches will pass just south the open 
waters today, resulting in continued decreasing winds. the high 
will progress east tonight, as broad low pressure around 29.8 
inches moves into the northern great plains. this will result in a
southwest wind shift across the waters. areas of rain and snow 
showers are possible tonight. 

winds will shift south and increase further during the day on 
monday, as the aforementioned low slowly moves east. gusts of 25 
to 30 knots are possible over southern lake michigan, with gales 
not expected at this time. 

winds will turn westerly monday night into tuesday, as low 
pressure moves into ontario. winds will shift out of the northwest
tuesday, as high pressure around 30.2 inches moves into the 
northern great plains. winds will subside tuesday night, as the
high crosses lake michigan. these winds will shift out of the 
southeast wednesday, as the high moves east of the region.


lmz261-362-364-366-563-565-567-868-212230-
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-
901 am cst sun dec 21 2025

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 15 to 25 kt becoming southwest
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to
2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt increasing to 30 kt.
chance of snow overnight. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.monday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
snow likely in the morning, then chance of snow and rain in the
afternoon. waves 5 to 8 ft occasionally to 10 ft.
.monday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of snow in the evening. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday...west winds 10 to 20 kt becoming northwest 15 to 25 kt.
waves 2 to 4 ft. 
.tuesday night...northwest winds 15 to 25 kt becoming north 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.wednesday...southeast winds 10 to 20 kt becoming south. waves
2 to 4 ft. 
.thursday...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 211501
glflm 
expires:202512212230;;974843

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cst sun dec 21 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...

high pressure around 30.4 inches will pass just south the open 
waters today, resulting in continued decreasing winds. the high 
will progress east tonight, as broad low pressure around 29.8 
inches moves into the northern great plains. this will result in a
southwest wind shift across the waters. areas of rain and snow 
showers are possible tonight. 

winds will shift south and increase further during the day on 
monday, as the aforementioned low slowly moves east. gusts of 25 
to 30 knots are possible over southern lake michigan, with gales 
not expected at this time. 

winds will turn westerly monday night into tuesday, as low 
pressure moves into ontario. winds will shift out of the northwest
tuesday, as high pressure around 30.2 inches moves into the 
northern great plains. winds will subside tuesday night, as the
high crosses lake michigan. these winds will shift out of the 
southeast wednesday, as the high moves east of the region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-212230-
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-
901 am cst sun dec 21 2025

sheboygan wi to pentwater mi south...

.rest of today...northwest winds 10 to 20 kt becoming southwest
10 to 15 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to
2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
slight chance of snow overnight. waves 3 to 5 ft building to 4 to
6 ft occasionally to 8 ft. 
.monday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of snow in the morning. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday night...south winds 10 to 20 kt becoming southwest. waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday...west winds 10 to 20 kt becoming northwest. waves 3 to
5 ft. 
.tuesday night...northwest winds 10 to 15 kt veering to
northeast. waves 2 to 4 ft. 
.wednesday...southeast winds 10 to 20 kt. waves 3 to 5 ft. 
.thursday...east winds 10 to 15 kt becoming south. waves 1 to
3 ft.  

$$