Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. Read More >

Last Update: 401 AM EDT Fri Aug 21 2026

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Philadelphia, PA Local Forecast Office

15NM E Lewes DE

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

Today

N winds 10 to 15 kt, becoming NE 5 to 10 kt this afternoon. Seas 2 to 3 ft. Wave detail: S 2 ft at 5 seconds and N 1 foot at 3 seconds.

Tonight

E winds around 5 kt. Seas 2 to 3 ft. Wave detail: NE 2 ft at 6 seconds and NW 1 foot at 3 seconds.

Sat

E winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: NE 2 ft at 6 seconds and S 1 foot at 4 seconds. Showers likely in the morning, then showers likely with a chance of tstms in the afternoon.

Sat Night

SE winds around 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave detail: NE 2 ft at 6 seconds and SE 1 foot at 3 seconds. Showers likely with a chance of tstms in the evening, then a chance of showers after midnight.

Sun

SW winds around 5 kt. Seas around 2 ft. Wave detail: SE 1 foot at 6 seconds and SE 1 foot at 13 seconds. A chance of showers and tstms in the afternoon.

Sun Night

W winds 5 to 10 kt. Seas around 2 ft. Wave detail: E 2 ft at 6 seconds and W 1 foot at 2 seconds. A chance of showers in the evening.

Mon

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

Mon Night

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

Tue

NW winds around 5 kt. Seas around 2 ft.

Tue Night

SW winds around 5 kt. Seas around 2 ft.

winds and seas higher in and near tstms.