fzus63 kmkx 130201
glflm 
expires:202604130930;;272422

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cdt sun apr 12 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...

a broad area of low pressure around 29.4 inches from western lake
superior to southern hudson bay, becoming deeper over southern
hudson bay tonight. this will bring breezy south winds to all of 
lake michigan, but with gales developing over the north third 
this evening into early monday morning. a gale warning is in
effect. 

winds will weaken later monday morning as the low quickly moves 
away and the trailing cold front stalls over central lake 
michigan. then, a couple passing low pressure system along the 
stalled front will lead to intermittent showers and thunderstorms 
through the middle of the week. areas of dense fog will likely 
occur at times due to a relatively mild and humid airmass over the
cold waters.


lmz261-362-364-366-563-565-130930-
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-
901 pm cdt sun apr 12 2026

two rivers wi to manistee mi north...

...gale warning in effect until 3 am cdt monday...

.rest of tonight...south winds to 30 kt becoming southwest gales
to 35 kt. areas of fog. scattered rain showers and slight chance 
of thunderstorms through early evening, then scattered rain 
showers overnight. waves 8 to 11 ft occasionally to 14 ft building
to 8 to 12 ft occasionally to 16 ft, then subsiding to 8 to 11 ft
occasionally to 14 ft. 
.monday...west winds 20 to 25 kt diminishing to 10 to 20 kt late 
in the morning, then veering to north 10 to 15 kt early in the 
afternoon veering to east 10 to 20 kt late. patchy fog in the 
morning. waves 6 to 9 ft occasionally to 12 ft subsiding to 2 to 4
ft. 
.monday night...east winds 10 to 20 kt becoming southeast. rain
showers with a chance of thunderstorms. waves 2 to 4 ft building
to 3 to 5 ft. 
.tuesday...southwest winds 10 to 20 kt becoming south 10 to
15 kt. chance of rain showers in the afternoon. waves 3 to 5 ft. 
.tuesday night...northeast winds 10 to 15 kt becoming north 10 to
20 kt. chance of rain showers. waves 2 to 4 ft. 
.wednesday...northeast winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain showers. waves 1 to 3 ft. 
.wednesday night...east winds 10 to 20 kt. rain showers likely.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.thursday...south winds 10 to 20 kt becoming southwest. chance of
rain showers. waves 4 to 6 ft occasionally to 8 ft. 
.friday...southeast winds 10 to 20 kt becoming south. waves 3 to
5 ft building to 4 to 7 ft occasionally to 9 ft.  

$$

fzus63 kmkx 130201
glflm 
expires:202604130930;;272423

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 pm cdt sun apr 12 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...

a broad area of low pressure around 29.4 inches from western lake
superior to southern hudson bay, becoming deeper over southern
hudson bay tonight. this will bring breezy south winds to all of 
lake michigan, but with gales developing over the north third 
this evening into early monday morning. a gale warning is in
effect. 

winds will weaken later monday morning as the low quickly moves 
away and the trailing cold front stalls over central lake 
michigan. then, a couple passing low pressure system along the 
stalled front will lead to intermittent showers and thunderstorms 
through the middle of the week. areas of dense fog will likely 
occur at times due to a relatively mild and humid airmass over the
cold waters.


lmz080-567-669-671-673-675-777-779-868-870-872-874-876-878-130930-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from two rivers to sheboygan wi 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 pentwater to manistee mi 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-
901 pm cdt sun apr 12 2026

two rivers wi to manistee mi south...

.rest of tonight...south winds 25 to 30 kt becoming southwest.  
patchy fog. rain showers and slight chance of thunderstorms 
through early evening, then scattered rain showers and slight 
chance of thunderstorms overnight. waves 8 to 11 ft occasionally 
to 14 ft subsiding to 6 to 9 ft occasionally to 12 ft. 
.monday...southwest winds 15 to 25 kt becoming south 10 to 20 kt.
patchy fog. slight chance of rain showers and thunderstorms in
the afternoon. waves 5 to 8 ft occasionally to 10 ft subsiding to
2 to 4 ft. 
.monday night...south winds 10 to 20 kt increasing to 15 to 25 kt
late in the evening, then increasing to 30 kt after midnight
becoming southwest 15 to 25 kt late. patchy fog in the evening.
chance of rain showers and thunderstorms. waves 1 to 3 ft
building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds 15 to 25 kt becoming south 10 to
20 kt. chance of rain showers and thunderstorms in the afternoon.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday night...southwest winds 10 to 20 kt becoming west 15 to
25 kt. rain showers with a chance of thunderstorms in the
evening, then rain showers overnight. waves 3 to 5 ft. 
.wednesday...northwest winds 15 to 25 kt backing to southeast
10 to 20 kt. rain showers likely in the morning, then rain
showers in the afternoon. waves 3 to 5 ft. 
.wednesday night...south winds 10 to 20 kt. rain showers likely.
waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. 
.thursday...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of rain showers. waves 4 to 6 ft occasionally to
8 ft. 
.friday...southeast winds 10 to 20 kt becoming south. waves 3 to
5 ft building to 4 to 7 ft occasionally to 9 ft.  

$$