Critical Fire Weather Over The Southwest U.S., Heavy Rain And Flash Flooding Likely In Hawaii

The combination of strong winds and very dry humidity will lead to critical to extremely critical fire weather conditions over portions of the southern Plains and Desert Southwest through Friday. The potential exists for explosive wildfire growth given ignition. Heavy rain and flash flooding can be expected over the Hawaiian Islands where Flash Flood Watches remain in effect into Friday.
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Last Update: 351 PM EDT Fri Apr 20 2018

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Philadelphia, PA Local Forecast Office

35NM NE Atlantic City NJ

Marine Zone Forecast


Synopsis: High pressure builds over our area later tonight and remains in place through the weekend, then shifts offshore on Monday. Low pressure moves east across the Gulf Coast states Sunday and Monday, then tracks up the Mid-Atlantic coast later Tuesday through late Wednesday. High pressure then builds well to our west and south later Thursday and Friday.

Tonight
NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft early, then 2 ft or less, then around 3 ft late this evening and overnight. Swell mainly from the NW with a dominant period of 5 seconds.
Sat
NW winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt in the afternoon. Seas around 3 ft early in the morning, then 2 ft or less. Swell mainly from the NE with a dominant period of 6 seconds.
Sat Night
SW winds 5 to 10 kt, becoming N after midnight. Seas 2 ft or less. Swell mainly from the E with a dominant period of 8 seconds.
Sun
N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 ft or less. Swell mainly from the SE with a dominant period of 8 seconds.
Sun Night
S winds around 10 kt, becoming W after midnight. Seas 2 ft or less.
Mon
NE winds around 5 kt, becoming E in the afternoon. Seas 2 ft or less.
Mon Night
SE winds 5 to 10 kt. Seas 2 ft or less.
Tue
SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 ft or less.
Tue Night
E winds 15 to 20 kt. Seas 3 to 5 ft. A chance of rain in the evening, then rain likely after midnight.
Wed
E winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 5 to 8 ft, building to 7 to 10 ft in the afternoon. Rain.
Wed Night
E winds 5 to 10 kt, becoming NW after midnight. Seas 6 to 9 ft. Rain likely in the evening, then a chance of showers after midnight.
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ABOUT THIS FORECAST

Last Update: 351 PM EDT Fri Apr 20 2018
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