FZUS63 KMKX 261952
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
252 PM CDT Wed Mar 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

High pressure around 30.3 inches will continue to shift southeast of the region tonight. Winds will become south to southwest tonight, and west into Thursday morning.

A weak cold front will sink south over the lake and wash out on Thursday, bringing south winds over the southern half of the lake, and north to northeast winds over the northern half. Winds will then come around to east to southeast and become breezy Thursday night into Friday morning, as a warm front approaches the lake from the southwest.

These winds will shift southwest as the warm front moves northward across the lake Friday, stalling out over central to northern portions of the lake Friday night. The front will shift south on Saturday, shifting the gusty winds to the northeast behind it into Saturday night. Gusty northeast to north winds are then forecast for Sunday into Monday, as low pressure around 29.5 inches passes near the far southern portions of the lake.

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
252 PM CDT Wed Mar 26 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

TONIGHT
South winds 10 to 20 kt becoming southwest 15 to 25 kt. Waves 3 to 5 ft.

THURSDAY
Southwest winds 10 to 20 kt veering to north. Waves 3 to 5 ft.

THURSDAY NIGHT
Northeast winds 10 to 20 kt becoming east. Waves 2 to 4 ft.

FRIDAY
Southeast winds 15 to 25 kt increasing to 30 kt. Rain showers likely with a chance of snow showers in the morning, then rain showers in the afternoon. Waves 4 to 6 ft occasionally to 8 ft.

FRIDAY NIGHT
Southeast winds to 30 kt backing to northeast 15 to 25 kt. Rain showers in the evening, then rain showers likely overnight. Waves 4 to 6 ft occasionally to 8 ft.

SATURDAY
Northeast winds 15 to 25 kt. Rain showers likely. Waves 4 to 7 ft occasionally to 9 ft.

SATURDAY NIGHT
Northeast winds to 30 kt. Rain. Waves 5 to 8 ft occasionally to 10 ft.

SUNDAY
Northeast winds to 30 kt. Rain likely with a chance of snow. Waves 6 to 9 ft occasionally to 12 ft.

MONDAY
North winds to 30 kt diminishing to 15 to 25 kt. Waves 7 to 10 ft occasionally to 13 ft.

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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 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
252 PM CDT Wed Mar 26 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TONIGHT
Southeast winds 10 to 15 kt veering to southwest. Waves 1 to 3 ft.

THURSDAY
West winds 10 to 20 kt becoming south 10 to 15 kt. Slight chance of rain showers in the morning. Waves 1 to 3 ft.

THURSDAY NIGHT
South winds 5 to 10 kt becoming southeast 10 to 20 kt. Waves 1 to 3 ft.

FRIDAY
South winds 10 to 20 kt increasing to 30 kt in the afternoon. Chance of rain showers. Waves 4 to 6 ft occasionally to 8 ft.

FRIDAY NIGHT
Southwest winds to 30 kt. Chance of rain showers overnight. Waves 4 to 7 ft occasionally to 9 ft.

SATURDAY
West winds 10 to 20 kt veering to north 15 to 25 kt. Rain showers likely. Waves 4 to 7 ft occasionally to 9 ft.

SATURDAY NIGHT
Northeast winds 15 to 25 kt becoming east 10 to 20 kt. Rain. Waves 4 to 7 ft occasionally to 9 ft.

SUNDAY
Northeast winds 15 to 25 kt becoming north to 30 kt. Rain likely. Waves 6 to 9 ft occasionally to 12 ft.

MONDAY
North winds 15 to 25 kt. Chance of snow. Waves 7 to 10 ft occasionally to 13 ft.

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LMZ761-270315
MAFOR 2622/ MICHIGAN NORTH 11410 11420 11430 12530 11620 11630 11730. Waves 1 to 3 feet building to 2 to 4 feet tonight. Waves 2 to 4 feet subsiding to 1 to 3 feet Thursday.

MICHIGAN SOUTH 12310 11410 12510 11620 11520 11410. Waves 2 feet or less.

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Wood

Experimental modernized open lake forecast is available online at weather.gov/mkx/glftable

Graphical marine forecasts are available online at: weather.gov/greatlakes