fzus63 kmkx 222040
glflm 
expires:202512230415;;043647

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst mon dec 22 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...

south winds this evening will shift southwest later tonight and 
west on tuesday, as low pressure around 29.8 inches moves into 
ontario. winds will shift west northwest by tuesday afternoon, as 
high pressure around 30.4 inches moves from north dakota into 
northern minnesota. 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.

another stronger high around 30.5 inches will move east across 
southern manitoba into ontario wednesday night into christmas day,
with winds steadily increasing out of the northeast to east.


lmz261-362-364-366-563-565-567-868-230415-
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-
240 pm cst mon dec 22 2025

sheboygan wi to pentwater mi north...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. areas of drizzle and light freezing drizzle this evening,
then patchy drizzle and light freezing drizzle overnight. waves
4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tuesday...west winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.tuesday night...northwest winds to 30 kt becoming north 15 to
25 kt late in the evening, then diminishing to 10 to 20 kt after
midnight diminishing to 5 to 10 kt late. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.wednesday...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.wednesday night...southwest winds 10 to 15 kt veering to
northwest. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...northeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 1 to 3 ft. 
.thursday night...east winds to 30 kt becoming southeast. chance
of snow. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.friday...southeast winds to 30 kt becoming east 15 to 25 kt.
snow likely with a chance of rain. waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft. 
.saturday...south winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 222040
glflm 
expires:202512230415;;043648

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
240 pm cst mon dec 22 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...

south winds this evening will shift southwest later tonight and 
west on tuesday, as low pressure around 29.8 inches moves into 
ontario. winds will shift west northwest by tuesday afternoon, as 
high pressure around 30.4 inches moves from north dakota into 
northern minnesota. 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.

another stronger high around 30.5 inches will move east across 
southern manitoba into ontario wednesday night into christmas day,
with winds steadily increasing out of the northeast to east.


lmz080-669-671-673-675-777-779-870-872-874-876-878-230415-
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-
240 pm cst mon dec 22 2025

sheboygan wi to pentwater mi south...

.tonight...south winds 15 to 25 kt becoming southwest 10 to
20 kt. areas of drizzle with patchy light freezing drizzle this
evening, then areas of drizzle overnight. waves 4 to 6 ft
occasionally to 8 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 20 kt veering to northeast
10 to 15 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.wednesday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday night...south winds 10 to 15 kt veering to northwest.
chance of rain in the evening. waves 2 to 4 ft subsiding to 1 to
3 ft. 
.thursday...northeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 2 to 4 ft. 
.thursday night...east winds 15 to 25 kt becoming southeast.
rain. waves 4 to 6 ft occasionally to 8 ft. 
.friday...southeast winds 10 to 20 kt becoming northeast. chance
of rain. waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft. 
.saturday...southeast winds 10 to 20 kt. waves 2 to 4 ft.  

$$