fzus63 kmkx 021313
glflm 
expires:202610022115;;411096

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
813 am cdt fri oct 2 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...

30.3 inch high pressure will move across lake michigan this 
evening, bringing decreasing & eventually light/variable winds. 
winds will trend south-southwesterly saturday as 29.8 inch low 
pressure moves toward the hudson bay from the canadian prairies. 
the low will pull a cold front across the waters saturday night 
into sunday, bringing a west-northwest wind shift. showers could 
accompany the passing front, particularly across the northern half
of the waters. northwest winds will continue through the day 
monday, tapering monday night as 30.2 inch high pressure moves in
from the northern great plains. 

a deeper area of 29.4 inch low pressure will build toward the 
hudson bay tuesday through thursday. south-southwest winds will 
increase in advance of the approaching low tuesday afternoon 
through wednesday, becoming gusty at times. a few gusts could 
approach gale-force, particularly over the northern half of the 
open waters. will be monitoring for possible headlines as this 
portion of the period draws closer. the low will pull a cold front
across the waters wednesday night into thursday, bringing a west-
northwest wind shift and scattered rain showers. best potential 
for rain is currently favored over the northern third of the open 
waters. generally westerly winds will continue through friday as 
30.1 inch high pressure moves near or just south of lake 
michigan.



lmz261-362-364-366-563-565-567-868-022115-
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-
813 am cdt fri oct 2 2026

sheboygan wi to pentwater mi north...

.rest of today...northwest winds 10 to 20 kt increasing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.tonight...north winds 10 to 20 kt diminishing to 10 to 15 kt
late in the evening, then becoming northeast after midnight
becoming east late. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.saturday...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.saturday night...south winds 10 to 20 kt becoming southwest to
30 kt overnight. chance of showers overnight. waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft. 
.sunday...west winds to 30 kt becoming northwest. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday night...northwest winds to 30 kt diminishing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.monday...northwest winds 15 to 25 kt. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves 3 
to 5 ft building to 5 to 8 ft occasionally to 10 ft. 

$$

fzus63 kmkx 021313
glflm 
expires:202610022115;;411097

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
813 am cdt fri oct 2 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...

30.3 inch high pressure will move across lake michigan this 
evening, bringing decreasing & eventually light/variable winds. 
winds will trend south-southwesterly saturday as 29.8 inch low 
pressure moves toward the hudson bay from the canadian prairies. 
the low will pull a cold front across the waters saturday night 
into sunday, bringing a west-northwest wind shift. showers could 
accompany the passing front, particularly across the northern half
of the waters. northwest winds will continue through the day 
monday, tapering monday night as 30.2 inch high pressure moves in
from the northern great plains. 

a deeper area of 29.4 inch low pressure will build toward the 
hudson bay tuesday through thursday. south-southwest winds will 
increase in advance of the approaching low tuesday afternoon 
through wednesday, becoming gusty at times. a few gusts could 
approach gale-force, particularly over the northern half of the 
open waters. will be monitoring for possible headlines as this 
portion of the period draws closer. the low will pull a cold front
across the waters wednesday night into thursday, bringing a west-
northwest wind shift and scattered rain showers. best potential 
for rain is currently favored over the northern third of the open 
waters. generally westerly winds will continue through friday as 
30.1 inch high pressure moves near or just south of lake 
michigan.



lmz080-669-671-673-675-777-779-870-872-874-876-878-022115-
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-
813 am cdt fri oct 2 2026

sheboygan wi to pentwater mi south...

.rest of today...north winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.tonight...north winds 10 to 20 kt becoming east 10 to 15 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.saturday...east winds 10 to 15 kt becoming southeast 10 to
20 kt. waves 2 to 4 ft. 
.saturday night...southeast winds 10 to 20 kt becoming southwest.
waves 3 to 5 ft. 
.sunday...west winds 10 to 20 kt becoming northwest. waves 4 to
6 ft occasionally to 8 ft. 
.sunday night...northwest winds 10 to 20 kt becoming north. waves
3 to 5 ft. 
.monday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves
3 to 5 ft building to 5 to 8 ft occasionally to 10 ft.  

$$