fzus63 kmkx 100203
glflm 
expires:202610100930;;827269

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt fri oct 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 around 30.2 inches will continue to push east
overnight, while low pressure around 29.2 inches develops over the
northern plains. southeast winds will shift south overnight.

expect winds to increase for saturday, as lake michigan sits
between the two systems, and has the potential to produce 
southerly gusts up to 30 knots through early sunday morning. a 
few gale force gusts are possible across the northern portions of
the lake saturday afternoon and evening. no gale headlines are
expected at this time.

the main low pressure system weakens to around 29.6 inches 
sunday, as it lifts from ontario into the james bay region. this 
will drag a cold front across the upper great lakes later sunday 
into monday, as south to southwest winds shift north later monday
into tuesday. could see a few gale force gusts monday night into 
tuesday behind the cold frontal passage. winds should gradually 
ease through the middle of the week, as another high pressure 
system around 30.2 inches builds across the upper great lakes 
region.


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-
903 pm cdt fri oct 9 2026

sheboygan wi to pentwater mi north...

.rest of tonight...east winds 10 to 15 kt becoming southeast to
30 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. 
.saturday...southeast winds to 30 kt becoming south. waves 4 to
7 ft occasionally to 9 ft building to 7 to 10 ft occasionally to
13 ft. 
.saturday night...south winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.sunday...south winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest. waves
2 to 4 ft. 
.monday...southwest winds 15 to 25 kt. waves 3 to 5 ft. 
.monday night...northwest winds 15 to 25 kt becoming north.
showers likely. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft. 
.wednesday...northeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 100203
glflm 
expires:202610100930;;827270

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
903 pm cdt fri oct 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 around 30.2 inches will continue to push east
overnight, while low pressure around 29.2 inches develops over the
northern plains. southeast winds will shift south overnight.

expect winds to increase for saturday, as lake michigan sits
between the two systems, and has the potential to produce 
southerly gusts up to 30 knots through early sunday morning. a 
few gale force gusts are possible across the northern portions of
the lake saturday afternoon and evening. no gale headlines are
expected at this time.

the main low pressure system weakens to around 29.6 inches 
sunday, as it lifts from ontario into the james bay region. this 
will drag a cold front across the upper great lakes later sunday 
into monday, as south to southwest winds shift north later monday
into tuesday. could see a few gale force gusts monday night into 
tuesday behind the cold frontal passage. winds should gradually 
ease through the middle of the week, as another high pressure 
system around 30.2 inches builds across the upper great lakes 
region.


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-
903 pm cdt fri oct 9 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 10 to 20 kt increasing to
30 kt. slight chance of showers through early evening. waves 2 to
4 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday...south winds to 30 kt. waves 4 to 7 ft occasionally to
9 ft building to 6 to 9 ft occasionally to 12 ft. 
.saturday night...southeast winds to 30 kt diminishing to 10 to
20 kt. waves 6 to 9 ft occasionally to 12 ft. 
.sunday...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.sunday night...south winds 10 to 15 kt. waves 1 to 3 ft. 
.monday...south winds 10 to 20 kt becoming southwest 15 to 25 kt.
waves 3 to 5 ft. 
.monday night...southwest winds 10 to 20 kt becoming northwest
15 to 25 kt. chance of showers and thunderstorms. waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
6 to 9 ft occasionally to 12 ft. 
.wednesday...northeast winds 10 to 20 kt. waves 3 to 5 ft.  

$$