fzus63 kmkx 311943
glflm 
expires:202601010415;;567132

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
143 pm cst wed dec 31 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...

low pressure of 29.6 inches over lake huron this afternoon will 
continue to head southeastward through the rest of the day, with 
an associated cold front dropping through the region. northwest 
winds gusting up to 30 knots are expected into this evening behind
the front, with winds gradually easing overnight into thursday as
high pressure builds in from the northwest. moderate freezing 
spray is expected to develop from north to south this afternoon 
into this evening and continue into thursday morning as a colder 
airmass arrives behind the cold front. west to northwest winds 
around 10 to 20 knots will then prevail most of the time through 
the end of the week under persistent northwest flow aloft. 


lmz261-362-364-366-563-565-567-868-010415-
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-
143 pm cst wed dec 31 2025

sheboygan wi to pentwater mi north...

.tonight...northwest winds to 30 kt. freezing spray. chance of
snow this evening, then slight chance of snow overnight. waves
7 to 10 ft occasionally to 13 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.thursday...northwest winds to 30 kt becoming west 15 to 25 kt.
freezing spray in the morning. waves 4 to 7 ft occasionally to
9 ft. 
.thursday night...west winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.friday...northwest winds 15 to 25 kt becoming west. waves 3 to
5 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt becoming west. chance of
snow in the morning. waves 1 to 3 ft. 
.saturday night...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 15 kt becoming west 10 to 20 kt.
waves 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt becoming west. waves 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 311943
glflm 
expires:202601010415;;567133

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
143 pm cst wed dec 31 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...

low pressure of 29.6 inches over lake huron this afternoon will 
continue to head southeastward through the rest of the day, with 
an associated cold front dropping through the region. northwest 
winds gusting up to 30 knots are expected into this evening behind
the front, with winds gradually easing overnight into thursday as
high pressure builds in from the northwest. moderate freezing 
spray is expected to develop from north to south this afternoon 
into this evening and continue into thursday morning as a colder 
airmass arrives behind the cold front. west to northwest winds 
around 10 to 20 knots will then prevail most of the time through 
the end of the week under persistent northwest flow aloft. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-010415-
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-
143 pm cst wed dec 31 2025

sheboygan wi to pentwater mi south...

.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
slight chance of snow this evening. freezing spray. waves 8 to
12 ft occasionally to 16 ft subsiding to 6 to 9 ft occasionally
to 12 ft. 
.thursday...northwest winds 10 to 20 kt becoming west. freezing
spray in the morning. chance of snow in the afternoon. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.thursday night...west winds 10 to 20 kt becoming northwest.
waves 4 to 6 ft occasionally to 8 ft. 
.friday...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.friday night...northwest winds 10 to 20 kt diminishing to 10 to
15 kt. waves 3 to 5 ft. 
.saturday...northwest winds 5 to 10 kt becoming west 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 15 kt becoming west. waves 2 to
4 ft. 
.monday...southwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft.  

$$