fzus63 kmkx 191945
glflm 
expires:202604200315;;652944

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt sun apr 19 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 30.4 inches is expected to shift southeast 
across the region tonight into monday morning, then shift 
southeast in the afternoon. gusty north to northwest winds are 
expected into early evening, before weakening tonight into monday.

increasing south winds are expected later monday afternoon into 
monday night, as the high moves further southeast of the region. a
few gales may occur monday night into early tuesday morning, 
particularly over the northern third of the lake.

a backdoor cold front should then move southward across lake 
michigan tuesday afternoon and evening, shifting winds to the 
northeast behind it. high pressure around 30.4 inches to the 
northeast of the region wednesday should bring lighter winds to 
the area.

winds should become southeast to south and increase later in the 
week, as strong low pressure around 29.2 inches develops in the 
northern plains. 


lmz261-362-364-366-563-565-567-868-200315-
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-
245 pm cdt sun apr 19 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 15 to 25 kt becoming northwest 10 to
15 kt. scattered flurries this evening. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.monday...northwest winds 5 to 10 kt becoming west 10 to 15 kt
late in the morning, then becoming southwest 10 to 20 kt early in
the afternoon becoming south 15 to 25 kt late. waves 1 to 3 ft
building to 3 to 5 ft. 
.monday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.tuesday...southwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding to
4 to 6 ft occasionally to 8 ft. 
.tuesday night...northeast winds 5 to 10 kt increasing to 10 to
15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.wednesday...northeast winds 5 to 10 kt. waves 1 to 2 ft. 
.wednesday night...southeast winds 5 to 10 kt increasing to 10 to
20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.thursday...south winds 15 to 25 kt. waves 4 to 6 ft occasionally
to 8 ft building to 5 to 8 ft occasionally to 10 ft. 
.friday...south winds to 30 kt becoming southwest 15 to 25 kt.
chance of rain showers. waves 8 to 11 ft occasionally to 14 ft
subsiding to 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 191945
glflm 
expires:202604200315;;652945

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
245 pm cdt sun apr 19 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 30.4 inches is expected to shift southeast 
across the region tonight into monday morning, then shift 
southeast in the afternoon. gusty north to northwest winds are 
expected into early evening, before weakening tonight into monday.

increasing south winds are expected later monday afternoon into 
monday night, as the high moves further southeast of the region. a
few gales may occur monday night into early tuesday morning, 
particularly over the northern third of the lake.

a backdoor cold front should then move southward across lake 
michigan tuesday afternoon and evening, shifting winds to the 
northeast behind it. high pressure around 30.4 inches to the 
northeast of the region wednesday should bring lighter winds to 
the area.

winds should become southeast to south and increase later in the 
week, as strong low pressure around 29.2 inches develops in the 
northern plains. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-200315-
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-
245 pm cdt sun apr 19 2026

sheboygan wi to pentwater mi south...

.tonight...north winds 10 to 20 kt becoming northeast 5 to 10 kt.
scattered sprinkles this evening. waves 2 to 4 ft. 
.monday...northeast winds 5 to 10 kt veering to south late in the
morning, then increasing to 10 to 20 kt early in the afternoon
becoming southeast late. waves 1 to 3 ft building to 2 to 4 ft. 
.monday night...southeast winds 15 to 25 kt becoming south. waves
4 to 7 ft occasionally to 9 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tuesday night...southwest winds 10 to 15 kt veering to north.
waves 2 to 4 ft subsiding to 1 to 2 ft. 
.wednesday...northeast winds 5 to 10 kt. waves 1 to 2 ft. 
.wednesday night...east winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.thursday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft building to 5 to 8 ft
occasionally to 10 ft. 
.friday...south winds to 30 kt becoming southwest 10 to 20 kt.
showers likely. waves 7 to 10 ft occasionally to 13 ft.  

$$