fzus63 kmkx 181408
glflm 
expires:202601182230;;101936

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
808 am cst sun jan 18 2026

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...

low pressure around 29.8 inches will move from northwest 
minnesota this morning to the eastern upper peninsula of michigan
today. west to southwest winds are expected today across lake
michigan. 

the low will then strengthen to around 29.5 inches as is shifts 
into eastern ontario tonight, and into quebec on monday. an 
arctic cold front will move across the lake later this evening, 
with northwest gales and heavy freezing spray expected behind the 
front later tonight through monday afternoon. 

a gale warning is in effect for all of lake michigan later 
tonight through monday afternoon. the strong winds will combine 
with building waves and cold temperatures to bring heavy freezing 
spray later tonight through tuesday morning. a heavy freezing 
spray warning is in effect during this period across all of lake 
michigan. 

high pressure around 30.5 inches will shift from the northern
plains into the lower mississippi river valley tuesday, with winds
across lake michigan shifting west to southwest.


lmz261-362-364-366-563-565-567-868-182230-
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-
808 am cst sun jan 18 2026

sheboygan wi to pentwater mi north...

...gale warning in effect from late tonight through monday
afternoon...
...heavy freezing spray warning in effect from late tonight
through tuesday morning...

.rest of today...west winds 10 to 20 kt becoming southwest.
chance of snow. waves 3 to 5 ft. 
.tonight...west winds 10 to 20 kt increasing to 30 kt late in the
evening, then increasing to gales to 35 kt after midnight
becoming northwest gales to 40 kt late. snow. heavy freezing
spray overnight. waves 4 to 6 ft occasionally to 8 ft building to
8 to 12 ft occasionally to 16 ft. 
.monday...northwest gales to 40 kt diminishing to 30 kt. heavy
freezing spray. chance of snow. waves 12 to 16 ft occasionally to
21 ft. 
.monday night...west winds to 30 kt. heavy freezing spray. waves
8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.tuesday...west winds to 30 kt. heavy freezing spray in the
morning. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.tuesday night...southwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.wednesday...west winds 15 to 25 kt increasing to 30 kt. chance
of snow. waves 4 to 7 ft occasionally to 9 ft building to 5 to
8 ft occasionally to 10 ft. 
.thursday...west winds to 30 kt. heavy freezing spray. waves 5 to
8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.  

$$

fzus63 kmkx 181408
glflm 
expires:202601182230;;101937

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
808 am cst sun jan 18 2026

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...

low pressure around 29.8 inches will move from northwest 
minnesota this morning to the eastern upper peninsula of michigan
today. west to southwest winds are expected today across lake
michigan. 

the low will then strengthen to around 29.5 inches as is shifts 
into eastern ontario tonight, and into quebec on monday. an 
arctic cold front will move across the lake later this evening, 
with northwest gales and heavy freezing spray expected behind the 
front later tonight through monday afternoon. 

a gale warning is in effect for all of lake michigan later 
tonight through monday afternoon. the strong winds will combine 
with building waves and cold temperatures to bring heavy freezing 
spray later tonight through tuesday morning. a heavy freezing 
spray warning is in effect during this period across all of lake 
michigan. 

high pressure around 30.5 inches will shift from the northern
plains into the lower mississippi river valley tuesday, with winds
across lake michigan shifting west to southwest.


lmz080-669-671-673-675-777-779-870-872-874-876-878-182230-
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-
808 am cst sun jan 18 2026

sheboygan wi to pentwater mi south...

...gale warning in effect from late tonight through monday
afternoon...
...heavy freezing spray warning in effect from late tonight
through tuesday morning...

.rest of today...west winds 10 to 20 kt becoming southwest 15 to
25 kt. freezing spray. slight chance of snow this morning, then
chance of snow this afternoon. waves 4 to 7 ft occasionally to
9 ft. 
.tonight...southwest winds 15 to 25 kt becoming west to 30 kt
late in the evening, then increasing to gales to 40 kt after
midnight becoming northwest late. freezing spray in the evening,
then heavy freezing spray overnight. snow. waves 4 to 7 ft 
occasionally to 9 ft building to 12 to 16 ft occasionally to 21 
ft. 
.monday...northwest gales to 40 kt becoming west gales to 35 kt.
heavy freezing spray. chance of snow. waves 14 to 18 ft
occasionally to 23 ft. 
.monday night...west winds to 30 kt. heavy freezing spray. chance
of snow. waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 11 ft occasionally to 14 ft. 
.tuesday...west winds to 30 kt becoming southwest 15 to 25 kt.
heavy freezing spray in the morning, then freezing spray in the
afternoon. waves 6 to 9 ft occasionally to 12 ft. 
.tuesday night...southwest winds 15 to 25 kt increasing to 30 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft building to
5 to 8 ft occasionally to 10 ft. 
.wednesday...west winds to 30 kt. chance of snow. waves 6 to 9 ft
occasionally to 12 ft building to 7 to 10 ft occasionally to
13 ft. 
.thursday...west winds to 30 kt diminishing to 15 to 25 kt.
freezing spray. chance of snow. waves 8 to 11 ft occasionally to
14 ft subsiding to 6 to 9 ft occasionally to 12 ft.  

$$