fzus63 kmkx 170137
glflm 
expires:202609170915;;575450

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
837 pm cdt wed sep 16 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...

30.4 inch high pressure is centered near the ontario-quebec 
border late this evening, and will continue east through the day 
tomorrow. progression of the high will maintain east-northeast 
winds across the open waters through tomorrow afternoon. 
occasional periods of showers and thunderstorms will continue into
thursday, with severe weather not expected.

a new area of 30.4 inch high pressure will shift from the 
canadian great plains into ontario thursday night into friday 
morning, maintaining east-northeast winds across lake michigan. 
29.9 inch low pressure will develop near the missouri river 
friday afternoon, moving over or just south of waters during the 
day on saturday. winds will veer east-southeasterly ahead of the 
low, becoming gusty at points. some gusts could approach gale 
thresholds, particularly on friday night and saturday morning. 
whether borderline gales will be widespread enough to warrant gale
warnings remains uncertain at this time, with trends being 
monitored through the end of the week. areas of widespread showers
& storms will accompany the approaching/passing area of low 
pressure friday night through at least saturday night, with 
widespread severe weather not expected at this time. winds will 
trend northeasterly as the low slowly moves into the ohio river 
valley sunday into the beginning of next week.


lmz261-362-364-366-563-565-567-868-170915-
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-
837 pm cdt wed sep 16 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northeast winds 10 to 15 kt becoming east.
chance of showers overnight. waves 1 to 2 ft. 
.thursday...east winds 5 to 10 kt backing to northwest early in
the afternoon, then becoming north late. slight chance of showers
in the morning. waves 1 to 2 ft. 
.thursday night...north winds 10 to 15 kt becoming northeast
10 to 20 kt. waves 1 to 3 ft. 
.friday...northeast winds 10 to 20 kt becoming east 10 to 15 kt.
chance of showers in the afternoon. waves 2 to 4 ft. 
.friday night...east winds 15 to 25 kt becoming southeast to
30 kt. chance of showers in the evening, then showers overnight.
waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday...southeast winds to 30 kt becoming east. showers in
the morning, then chance of showers in the afternoon. waves 7 to
10 ft occasionally to 13 ft. 
.saturday night...northeast winds 15 to 25 kt. chance of showers.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.sunday...northeast winds to 30 kt. waves 5 to 8 ft occasionally
to 10 ft. 
.monday...east winds 15 to 25 kt. waves 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmkx 170137
glflm 
expires:202609170915;;575451

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
837 pm cdt wed sep 16 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...

30.4 inch high pressure is centered near the ontario-quebec 
border late this evening, and will continue east through the day 
tomorrow. progression of the high will maintain east-northeast 
winds across the open waters through tomorrow afternoon. 
occasional periods of showers and thunderstorms will continue into
thursday, with severe weather not expected.

a new area of 30.4 inch high pressure will shift from the 
canadian great plains into ontario thursday night into friday 
morning, maintaining east-northeast winds across lake michigan. 
29.9 inch low pressure will develop near the missouri river 
friday afternoon, moving over or just south of waters during the 
day on saturday. winds will veer east-southeasterly ahead of the 
low, becoming gusty at points. some gusts could approach gale 
thresholds, particularly on friday night and saturday morning. 
whether borderline gales will be widespread enough to warrant gale
warnings remains uncertain at this time, with trends being 
monitored through the end of the week. areas of widespread showers
& storms will accompany the approaching/passing area of low 
pressure friday night through at least saturday night, with 
widespread severe weather not expected at this time. winds will 
trend northeasterly as the low slowly moves into the ohio river 
valley sunday into the beginning of next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-170915-
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-
837 pm cdt wed sep 16 2026

sheboygan wi to pentwater mi south...

.rest of tonight...northeast winds 10 to 15 kt becoming east late
this evening, then becoming east 10 to 15 kt after midnight
diminishing to 5 to 10 kt late. slight chance of showers through
early evening, then chance of showers and slight chance of
thunderstorms overnight. waves 1 to 3 ft. 
.thursday...northeast winds 5 to 10 kt. slight chance of showers
and thunderstorms in the morning. waves 1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 20 kt diminishing to 10 to 15 kt.
chance of showers in the afternoon. waves 2 to 4 ft. 
.friday night...east winds 15 to 25 kt becoming southeast to
30 kt. chance of showers in the evening, then showers overnight.
waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft
occasionally to 13 ft. 
.saturday...southeast winds to 30 kt. showers in the morning,
then showers with a chance of thunderstorms in the afternoon.
waves 8 to 11 ft occasionally to 14 ft. 
.saturday night...northeast winds 15 to 25 kt becoming north.
chance of showers and thunderstorms. waves 5 to 8 ft occasionally
to 10 ft. 
.sunday...northeast winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft. 
.monday...east winds to 30 kt. chance of showers. waves 5 to 8 ft
occasionally to 10 ft.  

$$