fzus63 kmkx 140151
glflm 
expires:202503140930;;457413

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 pm cdt thu mar 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...

light and variable winds will become southeasterly late tonight
into friday morning as strong low pressure deepens to 28.9 inches
in the central great plains. low pressure will quickly 
progress into the upper mississippi valley this evening into 
friday night. breezy southeast winds will develop friday into 
friday night, with thunderstorms possible friday night across
southeastern portions of the open waters. wind shift to southerly
and increase to likely gales on saturday. a gale watch is in 
effect for the entirety of the open waters saturday morning 
through saturday evening. breezy southwest winds saturday evening 
will then shift westerly late saturday night into sunday as low 
pressure lifts into northern wisconsin.


lmz261-362-364-366-563-565-567-868-140930-
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-
851 pm cdt thu mar 13 2025

sheboygan wi to pentwater mi north...

...gale watch in effect from saturday morning through saturday
evening...

.rest of tonight...southeast winds 5 to 10 kt increasing to 15 to
25 kt. waves 1 ft or less building to 2 to 4 ft. 
.friday...southeast winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.friday night...southeast winds to 30 kt. rain showers likely
overnight. waves 7 to 10 ft occasionally to 13 ft. 
.saturday...south gales to 40 kt diminishing to gales to 35 kt.
chance of rain showers in the morning. waves 8 to 11 ft
occasionally to 14 ft. 
.saturday night...southwest winds to 30 kt diminishing to 15 to
25 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to
8 ft occasionally to 10 ft. 
.sunday...west winds 15 to 25 kt. chance of rain and snow
showers. waves 4 to 6 ft occasionally to 8 ft. 
.sunday night...northwest winds 15 to 25 kt becoming west. waves
3 to 5 ft. 
.monday...southwest winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.tuesday...southeast winds 10 to 20 kt becoming east. waves 3 to
5 ft building to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 140151
glflm 
expires:202503140930;;457414

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 pm cdt thu mar 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...

light and variable winds will become southeasterly late tonight
into friday morning as strong low pressure deepens to 28.9 inches
in the central great plains. low pressure will quickly 
progress into the upper mississippi valley this evening into 
friday night. breezy southeast winds will develop friday into 
friday night, with thunderstorms possible friday night across
southeastern portions of the open waters. wind shift to southerly
and increase to likely gales on saturday. a gale watch is in 
effect for the entirety of the open waters saturday morning 
through saturday evening. breezy southwest winds saturday evening 
will then shift westerly late saturday night into sunday as low 
pressure lifts into northern wisconsin.


lmz080-669-671-673-675-777-779-870-872-874-876-878-140930-
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-
851 pm cdt thu mar 13 2025

sheboygan wi to pentwater mi south...

...gale watch in effect from saturday morning through saturday
evening...

.rest of tonight...east winds 10 to 15 kt increasing to 10 to
20 kt late this evening, then becoming southeast after midnight
increasing to 15 to 25 kt late. waves 2 to 4 ft. 
.friday...southeast winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.friday night...southeast winds to 30 kt becoming south. chance
of rain showers in the evening, then rain showers overnight.
waves 7 to 10 ft occasionally to 13 ft. 
.saturday...south gales to 45 kt diminishing to gales to 40 kt.
waves 8 to 11 ft occasionally to 14 ft. 
.saturday night...southwest winds to 30 kt becoming west 10 to
20 kt overnight. chance of rain showers. waves 7 to 10 ft
occasionally to 13 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.sunday...west winds 15 to 25 kt. chance of rain and snow
showers. waves 4 to 7 ft occasionally to 9 ft. 
.sunday night...west winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday...southwest winds 10 to 20 kt becoming south. waves 2 to
4 ft. 
.tuesday...south winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft building to 4 to 7 ft occasionally to 9 ft.  

$$