FZUS63 KMKX 261935

GLFLM 



OPEN LAKE FORECAST for Lake Michigan

National Weather Service Milwaukee/Sullivan WI

235 PM CDT Thu Jun 26 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... 



Low pressure of 29.8 inches will move across the Iowa and

Minnesota border today, reaching Wisconsin tonight. A stationary 

front will stay parked over the southern end of the lake into this

evening with southerly winds south of the boundary and north to 

northeast winds north of the boundary. As the surface low 

approaches tonight, winds will come around to southwesterly over 

the whole lake and thunderstorms are expected over much of the 

open waters. The low is then expected to pass early Friday 

morning, dragging a cold front over the lake. Winds will become

westerly and northwesterly early Friday, becoming northerly 

Friday night as high pressure of 30.0 inches moves through the

area. 



Winds return to a southeasterly to southerly direction Sunday as

the high moves east of the region. 



LMZ261-362-364-366-563-565-567-868-270315-

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 Thu Jun 26 2025



SHEBOYGAN WI TO PENTWATER MI NORTH...



.TONIGHT...Northeast winds to 30 kt veering to southeast 15 to

25 kt. Chance of showers and thunderstorms this evening, then

showers likely with a chance of thunderstorms overnight. Patchy

fog overnight. Waves 3 to 5 ft. 

.FRIDAY...South winds 10 to 20 kt becoming west. Patchy fog in

the morning. Chance of showers and slight chance of thunderstorms

in the morning. Waves 2 to 4 ft subsiding to 1 to 3 ft. 

.FRIDAY NIGHT...Northwest winds 10 to 20 kt. Waves 1 to 3 ft. 

.SATURDAY...Northwest winds 5 to 10 kt backing to southwest 10 to

15 kt. Waves 1 to 2 ft. 

.SATURDAY NIGHT...South winds 5 to 10 kt. Waves 1 ft or less. 

.SUNDAY...South winds 10 to 20 kt. Chance of showers and

thunderstorms in the afternoon. Waves 1 to 3 ft. 

.SUNDAY NIGHT...Southwest winds 10 to 15 kt. Chance of showers

and thunderstorms. Waves 1 to 3 ft. 

.MONDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt.

Waves 1 to 2 ft. 

.TUESDAY...Northwest winds 10 to 20 kt becoming west. Waves 1 to

2 ft.  



$$



LMZ080-669-671-673-675-777-779-870-872-874-876-878-270315-

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 Hollandto 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 Thu Jun 26 2025



SHEBOYGAN WI TO PENTWATER MI SOUTH...



.TONIGHT...East winds 10 to 15 kt veering to south 10 to 20 kt.

Chance of showers and thunderstorms. Waves 1 to 2 ft.

.FRIDAY...Southwest winds 10 to 20 kt becoming west. Slight

chance of showers and thunderstorms. Waves 1 to 3 ft. 

.FRIDAY NIGHT...Northwest winds 10 to 15 kt. Waves 1 to 2 ft. 

.SATURDAY...North winds 5 to 10 kt becoming northeast 10 to

15 kt. Waves 1 to 2 ft. 

.SATURDAY NIGHT...Southeast winds 5 to 10 kt becoming south.

Waves 1 ft or less. 

.SUNDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.

Waves 1 to 3 ft. 

.SUNDAY NIGHT...South winds 10 to 15 kt becoming southwest 5 to

10 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft. 

.MONDAY...Southwest winds 10 to 15 kt becoming west. Chance of

showers. Waves 1 to 2 ft. 

.TUESDAY...Northwest winds 10 to 15 kt. Waves 1 to 2 ft.  



$$



LMZ761-270315-

MAFOR 2622/

MICHIGAN NORTH 11140 11240 11246 11336 11420 13520. A chance of

thunderstorms tonight. Waves 2 to 4 feet building to 3 to 5 feet

tonight. Waves 1 to 3 feet Friday. 



MICHIGAN SOUTH 11110 11200 11310 11410 13520 11620. A chance of

showers and thunderstorms tonight. Waves 2 feet or less. 



$$





Boxell



Experimental modernized open lake forecast is available online at

weather.gov/mkx/glftable



Graphical marine forecasts are available online at:

weather.gov/greatlakes

