fzus63 kmkx 182123
glflm 
expires:202601190430;;121866

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
323 pm 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 will deepen to 29.5 inches over the northern great
lakes by sunrise monday and sweep an arctic front across the lake
after midnight tonight. northwest gales will develop and last 
through monday afternoon with a gale warning in effect, while a 
heavy freezing spray warning will also go into effect and last 
through tuesday morning.

high pressure around 30.5 inches will shift across the southern
and eastern portion of the country for tuesday into wednesday,
supporting modest west to southwest winds over lake michigan.
a couple more cold frontal passages will bring a return of brisk
west to northwest winds for later wednesday through friday.  
heavy freezing spray may also return. 


lmz261-362-364-366-563-565-567-868-190430-
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-
323 pm cst sun jan 18 2026

sheboygan wi to pentwater mi north...

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

.tonight...west winds 15 to 25 kt increasing to 30 kt after
midnight, then increasing to gales to 40 kt late. snow.
visibility one quarter mile or less at times overnight. waves
4 to 6 ft occasionally to 8 ft building to 6 to 9 ft occasionally
to 12 ft. 
.monday...northwest gales to 40 kt diminishing to 30 kt. chance
of snow. visibility one quarter mile or less at times in the
morning. waves 10 to 14 ft occasionally to 18 ft subsiding to
8 to 11 ft occasionally to 14 ft. 
.monday night...west winds to 30 kt. heavy freezing spray. waves
7 to 10 ft occasionally to 13 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...west winds 15 to 25 kt becoming southwest 10 to
20 kt. chance of snow overnight. waves 4 to 6 ft occasionally to
8 ft building to 4 to 7 ft occasionally to 9 ft. 
.wednesday...west winds 10 to 20 kt increasing to 15 to 25 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft building to
5 to 8 ft occasionally to 10 ft. 
.wednesday night...west winds to 30 kt. freezing spray. waves
6 to 9 ft occasionally to 12 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. 
.friday...northwest winds 15 to 25 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 182123
glflm 
expires:202601190430;;121867

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
323 pm 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 will deepen to 29.5 inches over the northern great
lakes by sunrise monday and sweep an arctic front across the lake
after midnight tonight. northwest gales will develop and last 
through monday afternoon with a gale warning in effect, while a 
heavy freezing spray warning will also go into effect and last 
through tuesday morning.

high pressure around 30.5 inches will shift across the southern
and eastern portion of the country for tuesday into wednesday,
supporting modest west to southwest winds over lake michigan.
a couple more cold frontal passages will bring a return of brisk
west to northwest winds for later wednesday through friday.  
heavy freezing spray may also return. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-190430-
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-
323 pm cst sun jan 18 2026

sheboygan wi to pentwater mi south...

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

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

$$