Expires:202507180915;;628777
FZUS63 KMKX 180212
GLFLM 

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
912 PM CDT Thu Jul 17 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 around 30.2 inches over the region will slowly move
to the east into Friday night. Low pressure around 29.8 inches
should then move into the Upper Mississippi River Valley Saturday.
Northeast winds will become east and weaken overnight over
southern portions of the lake, with light and variable winds to
the north. Light and variable winds will linger on Friday. 

Light to modest southerly winds will then develop Saturday 
morning, ahead of the approaching low pressure system. Winds will
turn to the north by Saturday evening, as the low moves east of
the region. Light to modest northeast winds will then prevail into
Sunday, while another high pressure area around 30.1 inches sets 
up over Lake Superior.


LMZ261-362-364-366-563-565-567-868-180915-
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-
912 PM CDT Thu Jul 17 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 15 kt veering to east.
Waves 2 to 4 ft subsiding to 1 to 3 ft. 
.FRIDAY...Southeast winds 5 to 10 kt veering to southwest. Waves
1 to 2 ft. 
.FRIDAY NIGHT...Southeast winds 5 to 10 kt becoming south. Waves
1 ft or less. 
.SATURDAY...South winds 10 to 15 kt backing to northeast. Chance
of showers and thunderstorms in the morning, then chance of
showers in the afternoon. Waves 1 to 2 ft. 
.SATURDAY NIGHT...North winds 10 to 15 kt. Waves 1 to 2 ft. 
.SUNDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft. 
.SUNDAY NIGHT...Northeast winds 10 to 15 kt becoming east. Waves
1 to 2 ft. 
.MONDAY...Southeast winds 10 to 15 kt becoming east 10 to 20 kt.
Waves 1 to 3 ft. 
.TUESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.  

$$