One More Day of Heat with Severe Storms and Heavy Rain

One more day of early-season heat will grip the Northeastern U.S. today from New England to the Mid-Atlantic. A few more record highs are possible and heat advisories remain in effect from Boston to Philadelphia. Also, a cold front arriving into the East may produce strong to severe storms and heavy rain, which may result in flash flooding, from New England to the Southeast and Gulf Coast.
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Last Update: 403 PM EDT Sun May 22 2022

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Philadelphia, PA Local Forecast Office

15NM E Lewes DE

Marine Zone Forecast

Synopsis: A strong cold front will move through the region tonight, and the front will settle offshore on Monday. High pressure builds in for Tuesday and Wednesday, then a frontal system may approach the area later next week.

Tonight

SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW with gusts up to 20 kt after midnight. Seas around 3 ft. Tstms likely early this evening, then a chance of tstms late this evening. A chance of showers after midnight. Swell mainly from the S with a dominant period of 5 seconds.

Mon

N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt early in the afternoon, then becoming E late. Seas around 3 ft. Swell mainly from the N with a dominant period of 5 seconds.

Mon Night

E winds 5 to 10 kt. Seas 2 ft or less. Swell mainly from the NE with a dominant period of 5 seconds.

Tue

NE winds 10 to 15 kt. Gusts up to 20 kt in the late morning and afternoon. Seas 3 to 4 ft. A chance of showers until late afternoon. Swell mainly from the E with a dominant period of 6 seconds.

Tue Night

E winds 10 to 15 kt. Seas 3 to 4 ft.

Wed

E winds 10 to 15 kt. Seas 3 to 4 ft.

Wed Night

SE winds around 10 kt. Seas 3 to 4 ft.

Thu

S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers in the afternoon.

Thu Night

S winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely.

Fri

SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely, mainly in the morning.