fzus63 kmkx 210204
glflm 
expires:202605210930;;376043

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
904 pm cdt wed may 20 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 of 30.4 inches centered over lake superior this
evening will will gradually shift eastward through the end of the
week. persistent east to northeast winds of 10 to 20 knots are
expected through friday, with winds becoming northerly on saturday
as low pressure of 29.8 inches lifts northeast into southern
michigan. winds could increase a bit friday night into saturday,
depending on the exact track and strength of the low, though winds
are likely to stay below gale force. southerly winds are then
expected to develop early next week. 


lmz261-362-364-366-563-565-567-868-210930-
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-
904 pm cdt wed may 20 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northeast winds 10 to 20 kt. waves 1 to 3 ft. 
.thursday...northeast winds 10 to 20 kt. waves 1 to 3 ft. 
.thursday night...northeast winds 10 to 20 kt becoming east 10 to
15 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...east winds 15 to 25 kt increasing to 30 kt.
chance of showers. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...east winds to 30 kt becoming northeast. showers
likely in the morning, then chance of showers in the afternoon.
waves 5 to 8 ft occasionally to 10 ft. 
.saturday night...east winds 15 to 25 kt veering to south 10 to
20 kt. waves 3 to 5 ft subsiding to 1 to 3 ft. 
.sunday...south winds 10 to 15 kt becoming southwest. waves 1 to
2 ft. 
.monday...southwest winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 210204
glflm 
expires:202605210930;;376044

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
904 pm cdt wed may 20 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 of 30.4 inches centered over lake superior this
evening will will gradually shift eastward through the end of the
week. persistent east to northeast winds of 10 to 20 knots are
expected through friday, with winds becoming northerly on saturday
as low pressure of 29.8 inches lifts northeast into southern
michigan. winds could increase a bit friday night into saturday,
depending on the exact track and strength of the low, though winds
are likely to stay below gale force. southerly winds are then
expected to develop early next week. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-210930-
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-
904 pm cdt wed may 20 2026

sheboygan wi to pentwater mi south...

.rest of tonight...north winds 15 to 25 kt becoming northeast
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.thursday...northeast winds 10 to 20 kt becoming north 15 to
25 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.thursday night...northeast winds 10 to 20 kt becoming east.
waves 3 to 5 ft. 
.friday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 3 to 5 ft. 
.friday night...east winds 15 to 25 kt becoming northeast.
showers. waves 4 to 7 ft occasionally to 9 ft. 
.saturday...northeast winds 10 to 20 kt becoming north 10 to
15 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.saturday night...northeast winds 10 to 15 kt veering to south.
waves 1 to 3 ft subsiding to 1 to 2 ft. 
.sunday...south winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 2 ft. 
.monday...east winds 5 to 10 kt becoming southeast. waves 1 to
2 ft.  

$$