Station List

National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 021945
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
245 PM CDT Sat May 2 2026

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 grow breezy tonight into Sunday as low pressure of 29.7 inches approaches the lake, dragging a cold front over southeast over the lakes through late Sunday afternoon. Winds will become westerly for a brief period behind the front Sunday night, before returning to southwesterly and becoming breezy again on Monday ahead of another stronger low of 29.2 inches and another cold front.

LMZ261-362-364-366-563-565-567-868-030315
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
245 PM CDT Sat May 2 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

TONIGHT
South winds 10 to 20 kt becoming southwest. Chance of rain showers overnight. Waves 2 to 4 ft.

SUNDAY
South winds 15 to 25 kt becoming southwest to 30 kt. Chance of rain showers in the morning, then slight chance of rain showers in the afternoon. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.

SUNDAY NIGHT
Southwest winds 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.

MONDAY
Southwest winds to 30 kt. Waves 4 to 7 ft occasionally to 9 ft.

MONDAY NIGHT
West winds 15 to 25 kt diminishing to 10 to 15 kt overnight. Chance of rain showers. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.

TUESDAY
West winds 10 to 20 kt becoming southwest. Waves 1 to 3 ft.

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

WEDNESDAY
Northwest winds 10 to 15 kt becoming west. Waves 1 to 2 ft.

THURSDAY
Northwest winds 10 to 15 kt becoming west 10 to 20 kt. Waves 1 to 2 ft.

LMZ080-669-671-673-675-777-779-870-872-874-876-878-030315
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
245 PM CDT Sat May 2 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TONIGHT
South winds 10 to 20 kt becoming southwest 15 to 25 kt. Waves 2 to 4 ft.

SUNDAY
Southwest winds to 30 kt. Slight chance of rain showers in the morning, then chance of rain showers in the afternoon. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft.

SUNDAY NIGHT
Southwest winds 15 to 25 kt diminishing to 10 to 15 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.

MONDAY
Southwest winds 15 to 25 kt becoming south to 30 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.

MONDAY NIGHT
Southwest winds 10 to 20 kt becoming northwest. Chance of rain showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.

TUESDAY
Northwest winds 10 to 15 kt becoming northeast 10 to 20 kt. Chance of rain showers. Waves 2 to 4 ft.

TUESDAY NIGHT
West winds 10 to 15 kt becoming northwest. Waves 1 to 2 ft.

WEDNESDAY
North winds 5 to 10 kt increasing to 10 to 15 kt. Waves 1 to 2 ft.

THURSDAY
Northwest winds 10 to 15 kt becoming west 10 to 20 kt. Waves 1 to 2 ft.

LMZ761-030315
MAFOR 0222/ MICHIGAN NORTH 13420 11520 11430 12530 11540. A chance of rain showers overnight and Sunday morning. Waves 1 to 3 feet tonight. Waves 2 to 4 feet building to 3 to 6 feet Sunday.

MICHIGAN SOUTH 12420 11520 12530 13540. A chance of showers Sunday morning and afternoon. Waves 1 to 3 feet building to 2 to 4 feet tonight. Waves 3 to 6 feet Sunday.

Sheppard

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

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