Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Last Update: 336 AM EDT Wed Jun 17 2026

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Grand Rapids, MI Local Forecast Office

12NM SSW Pentwater MI

Marine Zone Forecast

Rest Of Tonight
West winds 15 to 20 knots. Partly cloudy. Waves 2 to 4 feet.
Wednesday
West winds 10 to 20 knots backing south in the late morning and early afternoon, then backing southeast 20 to 25 knots early in the afternoon. Rain showers and a chance of thunderstorms. Waves 2 to 4 feet.
Wednesday Night
Southeast winds 15 to 25 knots veering west after midnight. Rain showers likely and a chance of thunderstorms. Waves 3 to 5 feet.
Thursday
West winds 15 to 25 knots. Partly sunny. Waves 4 to 6 feet.
Thursday Night
West winds 15 to 20 knots. Partly cloudy. Waves 2 to 3 feet.
Juneteenth
West winds 10 to 20 knots. Sunny. Waves 2 to 3 feet.
Saturday
West winds 10 to 15 knots. Sunny. Waves around 1 foot.
Sunday
East winds 10 to 15 knots backing northeast 15 to 20 knots early in the afternoon. Mostly cloudy with a chance of rain showers. Waves 1 to 2 feet.



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336 AM EDT Wed Jun 17 2026
 
 

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