Expires:202507170300;;550877
FZUS63 KMKX 161754
GLFLM 

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
1253 PM CDT Wed Jul 16 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... 

Southerly winds will increase this morning ahead of an 
approaching low pressure around 29.7 inches and accompanying 
front. Expect the low pressure over northern IA to move across 
southern WI this afternoon and cross the middle portion of Lake 
Michigan through the evening. Accompanying this system will be 
increased thunderstorm chances which may produce strong, gusty 
winds across Lake Michigan through the late afternoon and evening.
Will first see northerly winds gradually build down across the 
northern half of the lake through the afternoon as the front 
shifts southeast ahead the low pressure, which will move across 
the Lake later this evening/tonight. Expect breezy northerly winds
to migrate into the southern half of the lake overnight and 
persist into Thursday as high pressure around 30.2 inches builds 
into the Upper Midwest. Lighter, shifting winds are expected for 
Friday as the high pressure moves over the Upper Great Lakes. 
Increasing southerly flow then returns for the start of the 
weekend.


LMZ261-362-364-366-563-565-567-868-170300-
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-
1253 PM CDT Wed Jul 16 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...North winds 15 to 25 kt. Showers likely with a chance
of thunderstorms. Waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.THURSDAY...North winds 15 to 25 kt increasing to 30 kt. Waves
4 to 7 ft occasionally to 9 ft. 
.THURSDAY NIGHT...North winds 15 to 25 kt becoming northeast
10 to 15 kt overnight. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft. 
.FRIDAY...Southeast winds 5 to 10 kt veering to southwest 10 to
15 kt. Waves 1 to 2 ft. 
.FRIDAY NIGHT...South winds 5 to 10 kt. Waves 1 ft or less. 
.SATURDAY...South winds 10 to 15 kt. Chance of showers. Waves
1 ft or less. 
.SUNDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.  

$$