fzus63 kmkx 201506
glflm 
expires:202601202215;;217125

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
906 am cst tue jan 20 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...

high pressure around 30.6 inches well southeast of the region will
shift east today. gusty west winds this morning will shift west 
southwest this afternoon. elevated waves and arctic air will
continue to lead to areas of heavy freezing spray through this
morning. a heavy freezing spray warning remains in effect until 
noon cst today for all of lake michigan.

west to southwest winds will continue tonight, with low pressure
around 29.8 inches moving across southern lake michigan wednesday
morning. west winds are expected behind the low wednesday
afternoon. 

winds will increase further and shift west to northwest wednesday
night, as another arctic cold front crosses lake michigan. a few 
gale force gusts may occur. gusty west to northwest winds thursday
will will turn mainly northwest friday, as strong high pressure 
around 30.9 inches builds into the northern great plains. a few
gale force gusts may occur during this period.

arriving arctic air and elevated wave heights will support 
additional periods of moderate to potentially heavy freezing spray
wednesday night into friday night.


lmz261-362-364-366-563-565-567-868-202215-
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-
906 am cst tue jan 20 2026

sheboygan wi to pentwater mi north...

...heavy freezing spray warning in effect until noon cst today...

.rest of today...west winds to 30 kt. heavy freezing spray. waves
4 to 7 ft occasionally to 9 ft. 
.tonight...southwest winds 15 to 25 kt becoming west 10 to 20 kt.
freezing spray in the evening. chance of snow overnight. waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.wednesday...northwest winds 10 to 15 kt becoming west 10 to
20 kt, then increasing to 15 to 25 kt late. chance of snow. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.wednesday night...west winds to 30 kt. chance of snow in the
evening. freezing spray. waves 6 to 9 ft occasionally to 12 ft. 
.thursday...west winds to 30 kt. heavy freezing spray in the
morning, then freezing spray in the afternoon. waves 7 to 10 ft
occasionally to 13 ft. 
.thursday night...west gales to 35 kt becoming northwest. heavy
freezing spray. waves 6 to 9 ft occasionally to 12 ft. 
.friday...northwest winds to 30 kt. heavy freezing spray. waves
6 to 9 ft occasionally to 12 ft. 
.saturday...northwest winds 10 to 15 kt becoming west. waves 2 to
4 ft.  

$$

fzus63 kmkx 201506
glflm 
expires:202601202215;;217126

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
906 am cst tue jan 20 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...

high pressure around 30.6 inches well southeast of the region will
shift east today. gusty west winds this morning will shift west 
southwest this afternoon. elevated waves and arctic air will
continue to lead to areas of heavy freezing spray through this
morning. a heavy freezing spray warning remains in effect until 
noon cst today for all of lake michigan.

west to southwest winds will continue tonight, with low pressure
around 29.8 inches moving across southern lake michigan wednesday
morning. west winds are expected behind the low wednesday
afternoon. 

winds will increase further and shift west to northwest wednesday
night, as another arctic cold front crosses lake michigan. a few 
gale force gusts may occur. gusty west to northwest winds thursday
will will turn mainly northwest friday, as strong high pressure 
around 30.9 inches builds into the northern great plains. a few
gale force gusts may occur during this period.

arriving arctic air and elevated wave heights will support 
additional periods of moderate to potentially heavy freezing spray
wednesday night into friday night.


lmz080-669-671-673-675-777-779-870-872-874-876-878-202215-
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-
906 am cst tue jan 20 2026

sheboygan wi to pentwater mi south...

...heavy freezing spray warning in effect until noon cst today...

.rest of today...west winds 15 to 25 kt becoming southwest 10 to
20 kt. heavy freezing spray late this morning. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.tonight...southwest winds 15 to 25 kt increasing to 30 kt.
chance of snow in the evening, then snow overnight. waves 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. 
.wednesday night...west winds to 30 kt. snow likely in the
evening, then chance of snow showers overnight. freezing spray
overnight. waves 6 to 9 ft occasionally to 12 ft building to 8 to
11 ft occasionally to 14 ft. 
.thursday...west winds to 30 kt. freezing spray. chance of snow
in the afternoon. waves 8 to 11 ft occasionally to 14 ft. 
.thursday night...west winds to 30 kt becoming northwest. heavy
freezing spray. chance of snow. waves 8 to 11 ft occasionally to
14 ft. 
.friday...northwest winds to 30 kt diminishing to 15 to 25 kt.
heavy freezing spray. chance of snow. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.saturday...northwest winds 10 to 20 kt. chance of snow. waves
3 to 5 ft.  

$$