fzus63 kmkx 250904
glflm 
expires:202512251615;;187962

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cst thu dec 25 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...

north winds have developed early this morning as high pressure of
30.5 inches noses into the region from the north. winds will then
turn easterly this afternoon as the high moves east then 
southeasterly tonight as low pressure of 29.7 inches moves across
central illinois. 

stronger low pressure will affect the region late in the weekend
into monday, moving from the central plains into the eastern great
lakes. this will initially result in increasing southeast winds
saturday night and early sunday, followed by a good chance for
gales sunday night and monday as a strong cold front sweeps across
lake michigan. much colder air will also pose a risk for freezing
spray.


lmz261-362-364-366-563-565-567-868-251615-
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-
304 am cst thu dec 25 2025

sheboygan wi to pentwater mi north...

.today...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tonight...southeast winds 15 to 25 kt increasing to 30 kt.
slight chance of snow in the evening, then chance of rain, snow
and light freezing rain overnight. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft. 
.friday...southeast winds to 30 kt becoming east 10 to 20 kt.
rain, snow, light sleet and light freezing rain in the morning,
then chance of rain, light freezing rain and snow in the
afternoon. waves 6 to 9 ft occasionally to 12 ft subsiding to
3 to 5 ft. 
.friday night...northeast winds 5 to 10 kt becoming east. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 20 kt. waves 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt. chance of rain and
light freezing rain. waves 2 to 4 ft. 
.sunday...southeast winds 10 to 20 kt backing to north 15 to
25 kt. chance of rain. waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday...northwest gales to 45 kt. freezing spray. chance of
snow. waves 10 to 14 ft occasionally to 18 ft.  

$$

fzus63 kmkx 250904
glflm 
expires:202512251615;;187963

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
304 am cst thu dec 25 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...

north winds have developed early this morning as high pressure of
30.5 inches noses into the region from the north. winds will then
turn easterly this afternoon as the high moves east then 
southeasterly tonight as low pressure of 29.7 inches moves across
central illinois. 

stronger low pressure will affect the region late in the weekend
into monday, moving from the central plains into the eastern great
lakes. this will initially result in increasing southeast winds
saturday night and early sunday, followed by a good chance for
gales sunday night and monday as a strong cold front sweeps across
lake michigan. much colder air will also pose a risk for freezing
spray.


lmz080-669-671-673-675-777-779-870-872-874-876-878-251615-
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-
304 am cst thu dec 25 2025

sheboygan wi to pentwater mi south...

.today...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tonight...east winds 15 to 25 kt becoming southeast to 30 kt.
rain overnight. waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft. 
.friday...southeast winds to 30 kt diminishing to 10 to 20 kt
late in the morning, then backing to northeast 10 to 15 kt early
in the afternoon becoming north late. rain in the morning, then
chance of sprinkles in the afternoon. waves 6 to 9 ft
occasionally to 12 ft subsiding to 3 to 5 ft. 
.friday night...north winds 5 to 10 kt becoming northeast. waves
1 to 3 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt. chance of rain.
waves 2 to 4 ft. 
.sunday...south winds 10 to 20 kt veering to northwest to 30 kt.
chance of rain. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.monday...northwest storm force winds to 50 kt. freezing spray.
chance of snow. waves 12 to 16 ft occasionally to 21 ft.  

$$