Severe Storms in the Upper Midwest; Heavy Rain in the Mid-Atlantic; Widespread Heat in the Southern Plains and Southwest

Severe storms with damaging winds, large hail, and locally heavy rain will impact portions of the northern Plains and Upper Midwest. A stalled front will produce another round of heavy rain, thunderstorms and flooding to the Mid-Atlantic. Excessive heat continues in the southern Plains to the Southwest, and fire weather threats remain critical from the Great Basin to north-central Rockies.
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Last Update: 101 PM EDT Thu Aug 13 2020

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Philadelphia, PA Local Forecast Office

27NM NE Atlantic City NJ

Marine Zone Forecast


Synopsis: A front will slowly sag southward through Saturday as high pressure builds across eastern Canada. Several waves of low pressure will move along this boundary, keeping unsettled weather across the area. An area of low pressure is forecast to lift northward across the area Sunday into Monday. A cold front may stall to our south and offshore for much of next week.

This Afternoon
SE winds around 5 kt. Seas 2 ft or less. Scattered tstms. Showers likely early, then a chance of showers late. Vsby 1 to 3 nm. Swell mainly from the SE with a dominant period of 9 seconds.
Tonight
E winds around 5 kt. Seas 2 ft or less. A chance of showers and tstms early in the evening. Vsby 1 to 3 nm in the evening. Swell mainly from the SE with a dominant period of 9 seconds.
Fri
NE winds around 5 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the late morning and afternoon. Seas 2 ft or less, then around 3 ft in the afternoon. A chance of tstms. Swell mainly from the S with a dominant period of 9 seconds.
Fri Night
NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. A chance of tstms early in the evening. A chance of tstms after midnight. Swell mainly from the SE with a dominant period of 7 seconds.
Sat
NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of tstms in the morning.
Sat Night
E winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of tstms after midnight.
Sun
E winds 15 to 20 kt. Seas 4 to 6 ft. Showers likely with a chance of tstms.
Sun Night
E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of tstms.
Mon
NE winds around 10 kt. Seas 3 to 4 ft. A chance of tstms.
Mon Night
NW winds 5 to 10 kt. Seas around 3 ft. A chance of tstms in the evening. winds and seas higher in and near tstms.

Winds and seas higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 101 PM EDT Thu Aug 13 2020
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