fzus63 kmkx 010153
glflm 
expires:202505010915;;745552

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt wed apr 30 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... 

high pressure around 30.4 inches will move east of the region 
tonight, with low pressure around 29.6 inches shifting northeast 
into northeast illinois. steady easterly winds will persist 
through tonight. 

the low will move through southern lower michigan thursday and 
northeast of there thursday night. winds will shift to the 
northeast over northern portions of the lake, with south to 
southwest winds to the south. winds will become north to northwest
thursday night across the entire lake.

another weak low pressure system around 29.6 inches will move 
east across the region on friday, along with a cold front. winds 
will become northwesterly friday behind the front. high pressure 
around 30.1 inches will then return to the upper great lakes for 
the weekend, bringing quiet weather and light winds.


lmz261-362-364-366-563-565-567-868-010915-
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-
853 pm cdt wed apr 30 2025

sheboygan wi to pentwater mi north...

.rest of tonight...east winds 10 to 15 kt. slight chance of rain
showers overnight. waves 1 to 2 ft. 
.thursday...east winds 10 to 20 kt becoming northeast 15 to
25 kt. rain showers. waves 2 to 4 ft. 
.thursday night...northeast winds 15 to 25 kt becoming north
10 to 20 kt, then diminishing to 10 to 15 kt late. chance of rain
showers in the evening. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday...northwest winds 10 to 15 kt increasing to 10 to 20 kt.
chance of rain showers. waves 1 to 2 ft. 
.friday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. waves 1 to 2 ft. 
.saturday...north winds 10 to 15 kt backing to west 10 to 20 kt.
waves 1 to 2 ft. 
.saturday night...southwest winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 2 ft. 
.sunday...north winds 10 to 15 kt becoming east. waves 1 to 2 ft.
.monday...southeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 010153
glflm 
expires:202505010915;;745553

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt wed apr 30 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... 

high pressure around 30.4 inches will move east of the region 
tonight, with low pressure around 29.6 inches shifting northeast 
into northeast illinois. steady easterly winds will persist 
through tonight. 

the low will move through southern lower michigan thursday and 
northeast of there thursday night. winds will shift to the 
northeast over northern portions of the lake, with south to 
southwest winds to the south. winds will become north to northwest
thursday night across the entire lake.

another weak low pressure system around 29.6 inches will move 
east across the region on friday, along with a cold front. winds 
will become northwesterly friday behind the front. high pressure 
around 30.1 inches will then return to the upper great lakes for 
the weekend, bringing quiet weather and light winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-010915-
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-
853 pm cdt wed apr 30 2025

sheboygan wi to pentwater mi south...

.rest of tonight...east winds 5 to 10 kt increasing to 10 to
20 kt. slight chance of rain showers through early evening, then
chance of rain showers and slight chance of thunderstorms
overnight. waves 1 to 3 ft. 
.thursday...east winds 15 to 25 kt backing to northwest 10 to
20 kt. rain showers and slight chance of thunderstorms in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. waves 3 to 5 ft. 
.thursday night...north winds 10 to 20 kt becoming west 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday...west winds 10 to 15 kt becoming northwest 10 to 20 kt.
chance of rain showers in the afternoon. waves 1 to 3 ft. 
.friday night...north winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday...north winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.saturday night...north winds 10 to 15 kt diminishing to 5 to
10 kt. waves 1 to 3 ft. 
.sunday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 3 ft. 
.monday...southeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft.  

$$