fzus63 kmkx 132045
glflm 
expires:202512140415;;528118

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cst sat dec 13 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...

brisk northwest winds and heavy freezing spray will continue
across all open waters through sunday morning as arctic high 
pressure around 30.8 inches slowly builds down through the 
northern plains into iowa and low pressure of 29.9 inches exits
through quebec.

winds will gradually ease sunday afternoon and evening as high 
pressure moves into the ohio valley. low pressure then enters the
hudson bay as high pressure exits, bringing brisk southwest winds
late sunday night into monday. a gale watch is in effect for this
time frame. a brief period of lighter winds develop monday night,
but low pressure around 29.2 inches develops and progresses
eastward across southern canada into tuesday, bringing an 
additional round of brisk southwest winds and gale potential,
especially across the northern half. winds diminish into wednesday
as low pressure exits, but become gusty and southwesterly again
thursday as an additional low pressure system progresses across
the northern plains.


lmz261-362-364-366-563-565-567-868-140415-
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-
245 pm cst sat dec 13 2025

sheboygan wi to pentwater mi north...

...heavy freezing spray warning in effect through sunday
morning...
...gale watch in effect from late sunday night through monday
morning...

.tonight...northwest winds to 30 kt. heavy freezing spray this
evening, then freezing spray overnight. chance of snow showers.
waves 6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt diminishing to 10 to 20 kt.
freezing spray in the morning. chance of snow showers in the
morning. waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.sunday night...west winds 10 to 20 kt becoming southwest late in
the evening, then increasing to 30 kt after midnight increasing
to gales to 40 kt late. freezing spray overnight. chance of snow
showers overnight. waves 2 to 4 ft building to 7 to 10 ft
occasionally to 13 ft. 
.monday...southwest gales to 40 kt becoming west 15 to 25 kt in
the afternoon. freezing spray in the morning. chance of snow in
the morning. waves 10 to 14 ft occasionally to 18 ft. 
.monday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.tuesday...southwest winds to 30 kt increasing to gales to 40 kt
in the afternoon. waves 4 to 6 ft occasionally to 8 ft building
to 8 to 11 ft occasionally to 14 ft. 
.tuesday night...southwest gales to 40 kt becoming west gales to
35 kt. waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.wednesday...west winds 15 to 25 kt becoming southwest 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft. 
.thursday...south gales to 35 kt becoming southwest. rain likely
with a chance of snow. waves 8 to 12 ft occasionally to 16 ft.  

$$

fzus63 kmkx 132045
glflm 
expires:202512140415;;528119

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cst sat dec 13 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...

brisk northwest winds and heavy freezing spray will continue
across all open waters through sunday morning as arctic high 
pressure around 30.8 inches slowly builds down through the 
northern plains into iowa and low pressure of 29.9 inches exits
through quebec.

winds will gradually ease sunday afternoon and evening as high 
pressure moves into the ohio valley. low pressure then enters the
hudson bay as high pressure exits, bringing brisk southwest winds
late sunday night into monday. a gale watch is in effect for this
time frame. a brief period of lighter winds develop monday night,
but low pressure around 29.2 inches develops and progresses
eastward across southern canada into tuesday, bringing an 
additional round of brisk southwest winds and gale potential,
especially across the northern half. winds diminish into wednesday
as low pressure exits, but become gusty and southwesterly again
thursday as an additional low pressure system progresses across
the northern plains.


lmz080-669-671-673-675-777-779-870-872-874-876-878-140415-
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-
245 pm cst sat dec 13 2025

sheboygan wi to pentwater mi south...

...heavy freezing spray warning in effect through sunday
morning...
...gale watch in effect from late sunday night through monday
morning...

.tonight...northwest winds to 30 kt. heavy freezing spray. chance
of snow showers. waves 8 to 11 ft occasionally to 14 ft. 
.sunday...northwest winds to 30 kt diminishing to 10 to 20 kt.
slight chance of snow showers in the morning. freezing spray.
waves 8 to 11 ft occasionally to 14 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.sunday night...west winds 10 to 20 kt becoming southwest late in
the evening, then increasing to 30 kt after midnight increasing
to gales to 35 kt late. freezing spray overnight. waves 4 to 7 ft
occasionally to 9 ft building to 8 to 11 ft occasionally to
14 ft. 
.monday...southwest gales to 35 kt becoming west to 30 kt.
freezing spray in the morning. waves 12 to 16 ft occasionally to
21 ft. 
.monday night...west winds 10 to 20 kt becoming southwest 10 to
15 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to
4 ft. 
.tuesday...southwest winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft building to 7 to 10 ft
occasionally to 13 ft. 
.tuesday night...southwest winds to 30 kt becoming west 15 to
25 kt. waves 8 to 11 ft occasionally to 14 ft. 
.wednesday...west winds 10 to 20 kt becoming southwest. waves
4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. 
.thursday...southwest gales to 35 kt becoming west. chance of
rain. waves 10 to 14 ft occasionally to 18 ft.  

$$