fzus63 kmkx 112019
glflm 
expires:202604120330;;207913

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
319 pm cdt sat apr 11 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...

southeast winds return this afternoon and become gusty tonight as
a sharper pressure gradient moves over lake michigan as low 
pressure moves into the northern great plains.

low pressure will shift into the northern great plains during the
day sunday as it deepens to near 29.4 inches. the low will quickly
shift east toward lake superior sunday night, reaching the
southern shores of the hudson bay by daybreak monday morning.
winds will thus increase further across the open waters sunday
through sunday night. will be monitoring for gale potential
during this time frame, particularly over the northern half of
lake michigan. as of this forecast update, forecast models
continue to suggest possible gales and headlines may be needed in
the coming days. 

winds will weaken monday morning as high pressure of 30.0 inches 
moves across ontario. then, passing low pressure systems will lead
to persistently active conditions across lake michigan into next 
week. will need to monitor thunderstorm development during the 
monday- wednesday time period, as some storms could become strong 
to severe.


lmz261-362-364-366-563-565-567-868-120330-
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-
319 pm cdt sat apr 11 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt becoming southeast to 30 kt.
chance of rain showers this evening, then rain showers and slight
chance of thunderstorms overnight. waves 1 to 3 ft building to
4 to 7 ft occasionally to 9 ft. 
.sunday...southeast winds to 30 kt becoming south. rain showers
with a chance of thunderstorms in the morning, then chance of
rain showers and slight chance of thunderstorms in the afternoon.
waves 6 to 9 ft occasionally to 12 ft. 
.sunday night...south winds to 30 kt becoming southwest. a few
gusts to gale force possible. chance of rain showers in the 
evening, then rain showers likely overnight. waves 7 to 10 ft 
occasionally to 13 ft.
.monday...southwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.monday night...east winds 10 to 20 kt becoming southeast 15 to
25 kt. rain showers likely with a chance of thunderstorms in the
evening, then rain showers with a chance of thunderstorms
overnight. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
chance of rain showers and thunderstorms in the morning, then
chance of rain showers in the afternoon. waves 4 to 6 ft
occasionally to 8 ft. 
.tuesday night...east winds 10 to 20 kt increasing to 15 to
25 kt. rain showers likely. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.wednesday...south winds 15 to 25 kt. chance of rain showers.
waves 5 to 8 ft occasionally to 10 ft. 
.thursday...northeast winds 10 to 20 kt veering to southeast
10 to 15 kt. waves 2 to 4 ft.  

$$

fzus63 kmkx 112019
glflm 
expires:202604120330;;207914

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
319 pm cdt sat apr 11 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...

southeast winds return this afternoon and become gusty tonight as
a sharper pressure gradient moves over lake michigan as low 
pressure moves into the northern great plains.

low pressure will shift into the northern great plains during the
day sunday as it deepens to near 29.4 inches. the low will quickly
shift east toward lake superior sunday night, reaching the
southern shores of the hudson bay by daybreak monday morning.
winds will thus increase further across the open waters sunday
through sunday night. will be monitoring for gale potential
during this time frame, particularly over the northern half of
lake michigan. as of this forecast update, forecast models
continue to suggest possible gales and headlines may be needed in
the coming days. 

winds will weaken monday morning as high pressure of 30.0 inches 
moves across ontario. then, passing low pressure systems will lead
to persistently active conditions across lake michigan into next 
week. will need to monitor thunderstorm development during the 
monday- wednesday time period, as some storms could become strong 
to severe.


lmz080-669-671-673-675-777-779-870-872-874-876-878-120330-
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-
319 pm cdt sat apr 11 2026

sheboygan wi to pentwater mi south...

.tonight...east winds 10 to 15 kt becoming southeast 10 to 20 kt
late this evening, then increasing to 15 to 25 kt after midnight
increasing to 30 kt late. chance of rain showers this evening,
then rain showers likely with slight chance of thunderstorms
overnight. waves 1 to 3 ft building to 4 to 7 ft occasionally to
9 ft. 
.sunday...south winds to 30 kt becoming southwest. chance of rain
showers and slight chance of thunderstorms. waves 5 to 8 ft
occasionally to 10 ft. 
.sunday night...southwest winds to 30 kt diminishing to 15 to
25 kt. rain showers likely in the evening, then rain showers
overnight. waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 7 ft occasionally to 9 ft. 
.monday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.monday night...south winds 10 to 20 kt increasing to 15 to
25 kt. chance of rain showers and thunderstorms. waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
rain showers likely with a chance of thunderstorms in the
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...south winds 10 to 20 kt becoming southwest 15 to
25 kt. rain showers with a chance of thunderstorms. waves 3 to
5 ft building to 4 to 7 ft occasionally to 9 ft.
.wednesday...southwest winds 15 to 25 kt becoming south. chance
of rain showers. waves 5 to 8 ft occasionally to 10 ft. 
.thursday...southwest winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain showers. waves 3 to 5 ft.  

$$