fzus63 kmkx 050250
glflm 
expires:202512051015;;023536

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
850 pm cst thu dec 4 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...

southwest winds will increase this evening to gale force over the
northern half of the lake as an area of low pressure around 29.6 
inches moves across southwestern ontario. a gale warning is in 
effect from late this evening through mid morning friday. light to
moderate freezing spray is also expected during this time given
the brisk, colder arctic air over the lake michigan.

a cold front extending south of the low will cross the lake friday
night. southwesterly winds remain breezy (25-30 kt gusts) ahead of
the cold front friday, gradually subsiding and veering northwest 
behind it. northwest winds gradually decline throughout saturday 
then become light and variable saturday evening as a weak surface 
ridge of high pressure builds into the region. stronger high 
pressure tracking southeastward through the dakotas and a weak low
pressure system tracking eastward past southern illinois will 
work together to drive north winds around 20-25 kt on sunday.


lmz261-362-364-366-563-565-567-868-051015-
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-
850 pm cst thu dec 4 2025

sheboygan wi to pentwater mi north...

...gale warning in effect through friday morning...

.rest of tonight...southwest winds to 30 kt increasing to gales
to 40 kt. freezing spray overnight. chance of snow overnight.
waves 4 to 7 ft occasionally to 9 ft building to 12 to 16 ft
occasionally to 21 ft. 
.friday...southwest gales to 40 kt diminishing to 15 to 25 kt.
chance of snow. waves 10 to 14 ft occasionally to 18 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.friday night...southwest winds to 30 kt becoming west. snow
likely in the evening. waves 6 to 9 ft occasionally to 12 ft
subsiding to 4 to 7 ft occasionally to 9 ft. 
.saturday...northwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.saturday night...northwest winds 10 to 20 kt. chance of snow
overnight. waves 1 to 3 ft. 
.sunday...north winds 15 to 25 kt. chance of snow in the morning.
waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.monday...west winds 10 to 20 kt becoming southwest to 30 kt.
chance of snow. waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft. 
.tuesday...west winds 15 to 25 kt. chance of snow. waves 8 to
12 ft occasionally to 16 ft subsiding to 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmkx 050250
glflm 
expires:202512051015;;023537

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
850 pm cst thu dec 4 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...

southwest winds will increase this evening to gale force over the
northern half of the lake as an area of low pressure around 29.6 
inches moves across southwestern ontario. a gale warning is in 
effect from late this evening through mid morning friday. light to
moderate freezing spray is also expected during this time given
the brisk, colder arctic air over the lake michigan.

a cold front extending south of the low will cross the lake friday
night. southwesterly winds remain breezy (25-30 kt gusts) ahead of
the cold front friday, gradually subsiding and veering northwest 
behind it. northwest winds gradually decline throughout saturday 
then become light and variable saturday evening as a weak surface 
ridge of high pressure builds into the region. stronger high 
pressure tracking southeastward through the dakotas and a weak low
pressure system tracking eastward past southern illinois will 
work together to drive north winds around 20-25 kt on sunday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-051015-
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-
850 pm cst thu dec 4 2025

sheboygan wi to pentwater mi south...

.rest of tonight...southwest winds 15 to 25 kt increasing to
gales to 35 kt. waves 2 to 4 ft building to 8 to 12 ft
occasionally to 16 ft. 
.friday...southwest winds to 30 kt. slight chance of snow in the
afternoon. waves 8 to 12 ft occasionally to 16 ft subsiding to
7 to 10 ft occasionally to 13 ft. 
.friday night...southwest winds to 30 kt becoming west 15 to
25 kt. snow likely in the evening. waves 7 to 10 ft occasionally
to 13 ft. 
.saturday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.saturday night...north winds 10 to 15 kt increasing to 10 to
20 kt. chance of snow overnight. waves 3 to 5 ft subsiding to
1 to 3 ft. 
.sunday...north winds 10 to 20 kt increasing to 15 to 25 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. 
.sunday night...north winds 15 to 25 kt becoming northeast 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft. 
.monday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. 
.tuesday...west gales to 35 kt diminishing to 30 kt. chance of
snow. waves 10 to 14 ft occasionally to 18 ft.  

$$