Severe Thunderstorms, Heavy Rain, Gusty Winds, And Flooding Potential From The Southeast U.S. To The Appalachians and Mid Atlantic Region

A slow moving low pressure system will track from the southern U.S. to the Mid Atlantic and Northeast early this week. The system will bring widespread rain, locally heavy from the Deep South to the Mid Atlantic Region. Localized flooding will be possible. In addition, the potential exists for strong to severe thunderstorms capable of damaging wind particularly over the Southeast U.S. into Monday.
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Last Update: 326 AM EDT Mon Apr 23 2018

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Philadelphia, PA Local Forecast Office

11NM NW Fenwick Island Buoy DE

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY NIGHT...
Synopsis: Large high pressure over the Northeast United States will continue to move east today and then move off the New England coast tonight. Low pressure over the Gulf Coast states will lift to the north and east and affect the Mid-Atlantic region during the mid-week period. Another low may affect the region late in the week, followed by a cold front next weekend.

Today
SE winds 5 to 10 kt. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 9 seconds.
Tonight
E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 ft or less, then around 3 ft after midnight. Swell mainly from the SE with a dominant period of 6 seconds.
Tue
E winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Swell mainly from the NE with a dominant period of 8 seconds. a chance of rain late in the morning. Rain likely in the afternoon.
Tue Night
E winds 15 to 20 kt, becoming SE 10 to 15 kt late. Gusts up to 30 kt. Seas 4 to 7 ft, building to 6 to 9 ft after midnight. Swell mainly from the E with a dominant period of 10 seconds. rain. Patchy fog. Vsby 1 to 3 nm.
Wed
S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 6 to 9 ft. Rain. Patchy fog. Vsby 1 to 3 nm.
Wed Night
W winds 5 to 10 kt. Seas 4 to 7 ft. A chance of showers in the evening.
Thu
W winds 5 to 10 kt. Seas 4 to 6 ft.
Thu Night
SW winds 5 to 10 kt, becoming S after midnight. Seas 3 to 5 ft. A chance of showers after midnight.
Fri
SE winds around 5 kt. Seas 3 to 4 ft. A chance of showers.
Fri Night
S winds around 5 kt. Seas 3 to 5 ft. A chance of showers.
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Last Update: 326 AM EDT Mon Apr 23 2018
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