fzus63 kmkx 151351
glflm 
expires:202510152115;;179685

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 am cdt wed oct 15 2025

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 of 30.4 inches will cross lake superior today and
tonight while weakening to 30.2 inches. the breezy east-northeast
winds will diminish by late morning and become southeast by
thursday morning. look for the southeast winds to become breezy 
again thursday night into friday morning as low pressure of 29.3 
inches develops in north dakota and lifts into manitoba. 

the low will further deepen to 29.1 inches as it reaches the 
northern manitoba-ontario border friday afternoon. gusty southerly
winds are expected over lake michigan as an associated surface
trough cold front approaches from minnesota. southerly gale force
gusts will be possible friday afternoon and evening over the 
north half of the lake. 

a surface low is expected to deepen to 29.5 inches as it crosses
lake michigan saturday night. gusty northerly winds are expected 
sunday with gales possible again, this time over southern lake 
michigan.


lmz261-362-364-366-563-565-567-868-152115-
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-
851 am cdt wed oct 15 2025

sheboygan wi to pentwater mi north...

.rest of today...northeast winds 5 to 10 kt becoming north 10 to
15 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.tonight...north winds 10 to 15 kt becoming northeast. waves 1 to
2 ft. 
.thursday...east winds 10 to 15 kt veering to south 10 to 20 kt.
waves 2 to 4 ft. 
.thursday night...south winds 10 to 20 kt increasing to 15 to
25 kt. chance of showers in the evening, then showers likely
overnight. waves 2 to 4 ft building to 4 to 7 ft occasionally to
9 ft. 
.friday...south winds to 30 kt. chance of showers. waves 7 to
10 ft occasionally to 13 ft building to 10 to 14 ft occasionally
to 18 ft. 
.friday night...south winds to 30 kt. showers likely. waves 10 to
14 ft occasionally to 18 ft subsiding to 8 to 11 ft occasionally
to 14 ft. 
.saturday...south winds to 30 kt becoming southwest 15 to 25 kt.
showers likely. waves 7 to 10 ft occasionally to 13 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 151351
glflm 
expires:202510152115;;179686

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 am cdt wed oct 15 2025

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 of 30.4 inches will cross lake superior today and
tonight while weakening to 30.2 inches. the breezy east-northeast
winds will diminish by late morning and become southeast by
thursday morning. look for the southeast winds to become breezy 
again thursday night into friday morning as low pressure of 29.3 
inches develops in north dakota and lifts into manitoba. 

the low will further deepen to 29.1 inches as it reaches the 
northern manitoba-ontario border friday afternoon. gusty southerly
winds are expected over lake michigan as an associated surface
trough cold front approaches from minnesota. southerly gale force
gusts will be possible friday afternoon and evening over the 
north half of the lake. 

a surface low is expected to deepen to 29.5 inches as it crosses
lake michigan saturday night. gusty northerly winds are expected 
sunday with gales possible again, this time over southern lake 
michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-152115-
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-
851 am cdt wed oct 15 2025

sheboygan wi to pentwater mi south...

.rest of today...east winds 10 to 15 kt becoming northeast.
scattered showers through mid morning. waves 3 to 5 ft subsiding
to 2 to 4 ft. 
.tonight...northeast winds 10 to 15 kt becoming east. waves 1 to
3 ft. 
.thursday...southeast winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.thursday night...southeast winds 10 to 20 kt becoming south
15 to 25 kt. chance of showers. waves 2 to 4 ft building to 4 to
7 ft occasionally to 9 ft. 
.friday...south winds to 30 kt. chance of showers. waves 7 to
10 ft occasionally to 13 ft building to 10 to 14 ft occasionally
to 18 ft. 
.friday night...south winds to 30 kt. showers likely. waves 8 to
12 ft occasionally to 16 ft subsiding to 8 to 11 ft occasionally
to 14 ft. 
.saturday...south winds to 30 kt becoming southwest 15 to 25 kt.
showers likely. waves 8 to 11 ft occasionally to 14 ft subsiding
to 6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt increasing to gales to 35 kt.
chance of showers. waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft.  

$$