fzus63 kmkx 100216
glflm 
expires:202609100930;;664339

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt wed sep 9 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 near 30.1 inches will build in from the northern 
great plains tonight, lingering through thursday night & bringing 
light and variable winds to the waters.

a new area of low pressure near 29.2 inches will shift from
central canada toward the hudson bay friday morning through the
day saturday, bringing increasing south-southwest winds followed
by a west-northwest wind shift behind a cold front. occasional 
wind gusts near gale force are possible during this time frame, 
though whether or not they will be widespread enough to warrant 
headlines remains uncertain. trends will continue to be monitored
through the end of this week. periods of showers and storms will 
accompany the approaching/passing front, with widespread severe 
weather not currently anticipated.

high pressure near 30.1 inches will shift from the northern great
plains across lake michigan saturday night through sunday night,
bringing light and variable winds. the next area of low pressure 
& cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms. 
depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. will be providing
additional details as this portion of the period draws closer.


lmz261-362-364-366-563-565-567-868-100930-
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-
916 pm cdt wed sep 9 2026

sheboygan wi to pentwater mi north...

.rest of tonight...northwest winds to 30 kt diminishing to 10 to
20 kt. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.thursday...northwest winds 10 to 20 kt backing to southwest.
waves 1 to 3 ft. 
.thursday night...south winds 10 to 15 kt becoming southwest
10 to 20 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt becoming south to 30 kt in
the afternoon. waves 2 to 4 ft building to 4 to 6 ft occasionally
to 8 ft. 
.friday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.saturday...southwest winds to 30 kt. chance of showers in the
afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.saturday night...west winds 10 to 20 kt becoming north. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.sunday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...southeast winds to 30 kt becoming south gales to 35 kt.
showers likely. waves 5 to 8 ft occasionally to 10 ft building to
8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 100216
glflm 
expires:202609100930;;664340

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt wed sep 9 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 near 30.1 inches will build in from the northern 
great plains tonight, lingering through thursday night & bringing 
light and variable winds to the waters.

a new area of low pressure near 29.2 inches will shift from
central canada toward the hudson bay friday morning through the
day saturday, bringing increasing south-southwest winds followed
by a west-northwest wind shift behind a cold front. occasional 
wind gusts near gale force are possible during this time frame, 
though whether or not they will be widespread enough to warrant 
headlines remains uncertain. trends will continue to be monitored
through the end of this week. periods of showers and storms will 
accompany the approaching/passing front, with widespread severe 
weather not currently anticipated.

high pressure near 30.1 inches will shift from the northern great
plains across lake michigan saturday night through sunday night,
bringing light and variable winds. the next area of low pressure 
& cold front will approach from the west early next week, bringing
increasing winds & additional chances for showers and storms. 
depending on the strength of the low and front, periods of gales &
some stronger storms could be possible. will be providing
additional details as this portion of the period draws closer.


lmz080-669-671-673-675-777-779-870-872-874-876-878-100930-
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-
916 pm cdt wed sep 9 2026

sheboygan wi to pentwater mi south...

.rest of tonight...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft. 
.thursday...north winds 10 to 15 kt becoming northeast. waves
1 to 3 ft. 
.thursday night...northeast winds 10 to 15 kt veering to south.
waves 1 to 2 ft. 
.friday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft building to 3 to 5 ft. 
.friday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft. 
.saturday...south winds 15 to 25 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft. 
.sunday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...southeast winds to 30 kt becoming south gales to 40 kt.
chance of showers. waves 5 to 8 ft occasionally to 10 ft building
to 8 to 11 ft occasionally to 14 ft.  

$$