fzus63 kmkx 302039
glflm 
expires:202512310445;;512429

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
239 pm cst tue dec 30 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...

modest west to northwest winds will prevail this afternoon and 
tonight as strong low pressure remains over quebec and a weak cold
front moves across lake michigan. the strong low over quebec will
then move over eastern hudson bay for wednesday into thursday 
which will aid in moving a stronger cold front across lake 
michigan. thus brisk northwest winds and moderate freezing spray 
is expected for wednesday through thursday morning. a few gale
force wind gusts will be possible over far northern lake michigan
wednesday into wednesday evening. modest to brisk west to 
northwest winds will then continue the remainder of the week.


lmz261-362-364-366-563-565-567-868-310445-
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-
239 pm cst tue dec 30 2025

sheboygan wi to pentwater mi north...

.tonight...northwest winds 15 to 25 kt. chance of snow and slight
chance of light freezing rain. waves 3 to 5 ft. 
.wednesday...northwest winds to 30 kt. a few gale force wind gusts
are possible. chance of snow. freezing spray in the afternoon. 
waves 4 to 6 ft occasionally to 8 ft building to 6 to 9 ft 
occasionally to 12 ft.
.wednesday night...northwest winds to 30 kt. a few gale force wind gusts
are possible. chance of snow in the evening. freezing spray. 
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. freezing
spray in the morning. waves 4 to 7 ft occasionally to 9 ft
subsiding to 4 to 6 ft occasionally to 8 ft. 
.thursday night...west winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.friday...northwest winds 15 to 25 kt. waves 3 to 5 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft. 
.saturday...northwest winds 10 to 20 kt becoming west. waves 2 to
4 ft. 
.sunday...west winds 10 to 20 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 302039
glflm 
expires:202512310445;;512430

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
239 pm cst tue dec 30 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...

modest west to northwest winds will prevail this afternoon and 
tonight as strong low pressure remains over quebec and a weak cold
front moves across lake michigan. the strong low over quebec will
then move over eastern hudson bay for wednesday into thursday 
which will aid in moving a stronger cold front across lake 
michigan. thus brisk northwest winds and moderate freezing spray 
is expected for wednesday through thursday morning. a few gale
force wind gusts will be possible over far northern lake michigan
wednesday into wednesday evening. modest to brisk west to 
northwest winds will then continue the remainder of the week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-310445-
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-
239 pm cst tue dec 30 2025

sheboygan wi to pentwater mi south...

.tonight...west winds 15 to 25 kt becoming northwest. chance of
snow this evening, then slight chance of snow overnight. waves
4 to 7 ft occasionally to 9 ft. 
.wednesday...northwest winds 15 to 25 kt increasing to 30 kt.
slight chance of snow in the morning, then snow likely with
slight chance of light freezing rain in the afternoon. freezing
spray in the afternoon. waves 6 to 9 ft occasionally to 12 ft
building to 8 to 11 ft occasionally to 14 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 15 to
25 kt. chance of snow in the 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 15 to 25 kt becoming west 10 to
20 kt. freezing spray in the morning. 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. 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. 
.friday night...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday...northwest winds 10 to 15 kt. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.sunday...west winds 10 to 20 kt becoming southwest. waves 2 to
4 ft.  

$$