Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Last Update: 401 PM EDT Fri Jul 31 2026

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Philadelphia, PA Local Forecast Office

19NM NNE Lewes DE

Marine Zone Forecast

Tonight

S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt late this evening and overnight. Seas 1 foot or less. Wave detail: S 1 foot at 2 seconds and SE 1 foot at 7 seconds.

Sat

S winds around 5 kt, becoming SE 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: S 1 foot at 2 seconds, becoming S 2 ft at 3 seconds.

Sat Night

S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave detail: S 2 ft at 4 seconds.

Sun

SE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: SE 2 ft at 4 seconds.

Sun Night

S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: SE 2 ft at 5 seconds. A chance of tstms. Showers.

Mon

S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: SE 3 ft at 7 seconds. Showers in the morning, then showers with a chance of tstms in the afternoon.

Mon Night

S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas 2 to 3 ft. A chance of tstms. Showers.

Tue

SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. A chance of tstms in the afternoon.

Tue Night

S winds 5 to 10 kt. Seas around 2 ft. A chance of showers and tstms in the evening.

Wed

S winds 5 to 10 kt. Seas around 2 ft. A chance of showers in the afternoon.

Wed Night

S winds around 10 kt. Seas around 2 ft. A chance of showers in the evening.

winds and seas higher in and near tstms.

Winds and seas higher in and near tstms.