fzus63 kmkx 031935
glflm 
expires:202610040315;;479147

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
235 pm cdt sat oct 3 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 over eastern great lakes has brought 
steadily increasing south to southeast winds over the lake as the
low pressure around 29.9 inches to the west impinges on the the 
high pressure. winds will then trend south- southwesterly this 
evening as 29.8 inch low pressure moves toward the hudson bay from
the canadian prairies. the low pressure will pull a cold front 
across the waters tonight 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.


lmz261-362-364-366-563-565-567-868-040315-
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-
235 pm cdt sat oct 3 2026

sheboygan wi to pentwater mi north...

.tonight...south winds 10 to 20 kt becoming southwest to 30 kt.
chance of showers. waves 4 to 6 ft occasionally to 8 ft building
to 5 to 8 ft occasionally to 10 ft. 
.sunday...west winds to 30 kt becoming northwest 15 to 25 kt.
slight chance of showers in the morning. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.sunday night...northwest winds 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. 
.monday night...north winds 10 to 20 kt backing to south 10 to
15 kt. waves 1 to 3 ft. 
.tuesday...south winds 15 to 25 kt increasing to gales to 35 kt
in the afternoon. waves 4 to 7 ft occasionally to 9 ft building
to 7 to 10 ft occasionally to 13 ft. 
.tuesday night...southwest gales to 35 kt. waves 7 to 10 ft
occasionally to 13 ft subsiding to 6 to 9 ft occasionally to
12 ft. 
.wednesday...west winds 15 to 25 kt. waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft. 
.thursday...west winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft.  

$$

fzus63 kmkx 031935
glflm 
expires:202610040315;;479148

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
235 pm cdt sat oct 3 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 over eastern great lakes has brought 
steadily increasing south to southeast winds over the lake as the
low pressure around 29.9 inches to the west impinges on the the 
high pressure. winds will then trend south- southwesterly this 
evening as 29.8 inch low pressure moves toward the hudson bay from
the canadian prairies. the low pressure will pull a cold front 
across the waters tonight 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.


lmz080-669-671-673-675-777-779-870-872-874-876-878-040315-
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-
235 pm cdt sat oct 3 2026

sheboygan wi to pentwater mi south...

.tonight...south winds 10 to 20 kt becoming southwest 15 to
25 kt. slight chance of showers overnight. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...southwest winds 10 to 20 kt veering to northwest. waves
4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 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. 
.monday night...northeast winds 10 to 15 kt veering to southeast.
waves 1 to 3 ft. 
.tuesday...south winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft. 
.tuesday night...south winds to 30 kt becoming southwest. waves
7 to 10 ft occasionally to 13 ft. 
.wednesday...west winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.thursday...northwest winds 10 to 20 kt becoming west. waves 2 to
4 ft.  

$$