fzus63 kmkx 100921
glflm 
expires:202512101645;;326447

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
321 am cst wed dec 10 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...

northerly gales will continues to develop this morning across the
southern two-thirds of lake michigan behind departing low
pressure. the brisk winds will then gradually diminish tonight, as
high pressure of 30.1 inches approaches from the west. a period 
of northwesterly gales may then return friday night into saturday 
as a strong arctic front moves through the great lakes region. 
heavy freezing spray may also develop late week into the weekend
as the colder airmass moves in.


lmz366-565-567-868-101645-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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-
321 am cst wed dec 10 2025

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect through this afternoon...

.today...north gales to 40 kt diminishing to gales to 35 kt late
this morning, then becoming north gales to 35 kt early this
afternoon becoming northwest to 30 kt late. chance of snow. waves
8 to 12 ft occasionally to 16 ft. 
.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft
occasionally to 10 ft. 
.thursday...northwest winds 10 to 20 kt becoming west. waves 4 to
7 ft occasionally to 9 ft subsiding to 2 to 4 ft. 
.thursday night...west winds 5 to 10 kt. waves 1 to 3 ft
subsiding to 1 to 2 ft. 
.friday...west winds 10 to 15 kt increasing to 15 to 25 kt in the
afternoon. chance of snow in the afternoon. waves 1 to 2 ft
building to 3 to 5 ft. 
.friday night...west winds to 30 kt. freezing spray. chance of
snow. waves 7 to 10 ft occasionally to 13 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 7 to 10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 100921
glflm 
expires:202512101645;;326448

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
321 am cst wed dec 10 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...

northerly gales will continues to develop this morning across the
southern two-thirds of lake michigan behind departing low
pressure. the brisk winds will then gradually diminish tonight, as
high pressure of 30.1 inches approaches from the west. a period 
of northwesterly gales may then return friday night into saturday 
as a strong arctic front moves through the great lakes region. 
heavy freezing spray may also develop late week into the weekend
as the colder airmass moves in.


lmz669-671-870-872-101645-
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 whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
321 am cst wed dec 10 2025

sheboygan wi to pentwater mi south to north point light wi to
grand haven mi...

...gale warning in effect through this afternoon...

.today...north gales to 40 kt becoming northwest gales to 35 kt.
snow and slight chance of rain this morning, then chance of snow
this afternoon. waves 10 to 14 ft occasionally to 18 ft. 
.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
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. waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft. 
.thursday night...west winds 5 to 10 kt becoming southwest.
chance of snow overnight. waves 2 to 4 ft subsiding to 1 to 2 ft.
.friday...west winds 10 to 15 kt increasing to 15 to 25 kt in the
afternoon. chance of snow. waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft. 
.friday night...west winds to 30 kt. freezing spray. chance of
snow. waves 7 to 10 ft occasionally to 13 ft building to 8 to
11 ft occasionally to 14 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt. freezing spray. waves 8 to
11 ft occasionally to 14 ft subsiding to 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmkx 100921
glflm 
expires:202512101645;;326449

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
321 am cst wed dec 10 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...

northerly gales will continues to develop this morning across the
southern two-thirds of lake michigan behind departing low
pressure. the brisk winds will then gradually diminish tonight, as
high pressure of 30.1 inches approaches from the west. a period 
of northwesterly gales may then return friday night into saturday 
as a strong arctic front moves through the great lakes region. 
heavy freezing spray may also develop late week into the weekend
as the colder airmass moves in.


lmz080-673-675-777-779-874-876-878-101645-
lake michigan from michigan city in to st. joseph mi 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 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-
321 am cst wed dec 10 2025

north point light wi to grand haven mi south...

...gale warning in effect through this afternoon...

.today...northwest gales to 40 kt diminishing to gales to 35 kt.
rain and snow this morning, then chance of snow this afternoon.
waves 8 to 11 ft occasionally to 14 ft building to 12 to 16 ft
occasionally to 21 ft. 
.tonight...northwest winds to 30 kt diminishing to 15 to 25 kt.
chance of snow in the evening. waves 10 to 14 ft occasionally to
18 ft subsiding to 6 to 9 ft occasionally to 12 ft. 
.thursday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt late in the morning, then becoming west early in the
afternoon diminishing to 10 to 15 kt late. waves 5 to 8 ft
occasionally to 10 ft subsiding to 3 to 5 ft. 
.thursday night...southwest winds 5 to 10 kt becoming south 10 to
15 kt. chance of snow. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday...east winds 10 to 15 kt veering to west 15 to 25 kt in
the afternoon. chance of snow. waves 1 to 3 ft building to 4 to
6 ft occasionally to 8 ft. 
.friday night...west winds to 30 kt. freezing spray. chance of
snow. waves 7 to 10 ft occasionally to 13 ft building to 8 to
12 ft occasionally to 16 ft. 
.saturday...northwest winds to 30 kt. freezing spray. chance of
snow. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.sunday...northwest winds to 30 kt. freezing spray. waves 8 to
11 ft occasionally to 14 ft subsiding to 7 to 10 ft occasionally
to 13 ft.  

$$