Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Last Update: 401 PM EDT Sun Aug 31 2025

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Philadelphia, PA Local Forecast Office

35NM NNW Lewes DE

Marine Zone Forecast

Tonight

E winds 5 to 10 kt, becoming NE after midnight. Seas 1 foot or less. Wave detail: E 1 foot at 2 seconds.

Mon

NE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. Wave detail: NE 1 foot at 2 seconds, becoming E 1 foot at 3 seconds.

Mon Night

E winds 10 to 15 kt, becoming NE 5 to 10 kt after midnight. Seas around 2 ft in the evening, then 1 foot or less. Wave detail: E 1 foot at 3 seconds, becoming NE 1 foot at 3 seconds.

Tue

NE winds 5 to 10 kt, becoming E in the afternoon. Seas 1 foot or less. Wave detail: NE 1 foot at 2 seconds.

Tue Night

SE winds 5 to 10 kt, becoming SW after midnight. Seas 1 foot or less. Wave detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds.

Wed

SW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. Wave detail: SE 1 foot at 4 seconds.

Wed Night

S winds 5 to 10 kt. Seas around 2 ft.

Thu

S winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon.

Thu Night

S winds 10 to 15 kt. Seas around 2 ft. A chance of showers.