Severe Storms And Heavy Rain Is Expected In The Central/Southern Plains; Locally Heavy Rain/Scattered Storms In East/South; Poor Air Quality Persists Out West

Late afternoon and evening severe thunderstorms with heavy rainfall is expected from the Front Range of the Central/Southern Rockies into the High Plains. Meanwhile in the East and South, a slow moving front will trigger scattered storms with locally heavy rain. Finally, smoke from numerous ongoing wildfires in the West are requiring alerts throughout the region and even into the Upper Midwest.
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Last Update: 338 PM EDT Sat Aug 18 2018

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Philadelphia, PA Local Forecast Office

31NM SSE New York NY

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT...
Synopsis: A cold front will continue to slowly progress south through the region overnight before stalling tomorrow. A few waves of low pressure will move along the stalled front through Monday. The stalled front will lift northward as a warm front on Tuesday, followed by a cold front on Wednesday. High pressure will build in from the west from Thursday through the end of the week.

Tonight
SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas around 3 ft. Swell mainly from the S with a dominant period of 6 seconds. showers likely with a chance of tstms early this evening, then showers likely with scattered tstms late this evening and overnight.
Sun
NE winds 10 to 15 kt, increasing to 15 to 20 kt in the late morning and afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Swell mainly from the S with a dominant period of 7 seconds. showers likely with scattered tstms until late afternoon, then scattered showers late.
Sun Night
NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Swell mainly from the S with a dominant period of 7 seconds. a chance of showers and tstms until early morning.
Mon
NE winds around 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Swell mainly from the S with a dominant period of 7 seconds.
Mon Night
E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Tue
E winds around 10 kt. Seas 3 to 4 ft. A chance of showers and tstms in the afternoon.
Tue Night
S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Showers likely with a chance of tstms.
Wed
SW winds 10 to 15 kt. Seas 3 to 5 ft. A chance of tstms. Showers likely, mainly in the morning.
Wed Night
W winds around 10 kt, becoming NW after midnight. Seas 3 to 5 ft. A chance of showers and tstms in the evening.
Thu
N winds 5 to 10 kt. Seas 3 to 4 ft.
Thu Night
NW winds 5 to 10 kt, becoming N after midnight. Seas around 3 ft in the evening, then 2 ft or less. winds and seas higher in and near tstms.
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ABOUT THIS FORECAST

Last Update: 338 PM EDT Sat Aug 18 2018
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