Flash Flood Warning

FFWPHI

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for... Central Chester County in southeastern Pennsylvania... Northern Delaware County in southeastern Pennsylvania... Southern Montgomery County in southeastern Pennsylvania... Northwestern Philadelphia County in southeastern Pennsylvania...

* Until 330 AM EDT.

* At 1121 PM EDT, Doppler radar indicated heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 2 to 3 inches in 1 hour. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar.

IMPACT...Flooding of small creeks and streams, urban areas, highways, streets, and underpasses as well as other drainage and low lying areas.

* Some locations that may experience flash flooding include... Philadelphia, West Chester, Norristown, Phoenixville, West Norriton, East Norriton, Coatesville, Westtown, Downingtown, Conshohocken, Royersford and Narberth.

This includes the following highways... Interstate 476 in Pennsylvania between mile markers 8 and 19. Interstate 76 in Pennsylvania between mile markers 327 and 338. Pennsylvania Turnpike between mile markers 305 and 334.