At 529 PM EDT, emergency management reported flash flooding occurring in Hockessin. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Life threatening flash flooding caused by thunderstorms. SOURCE...Emergency management reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets, and underpasses. Some locations that may experience flash flooding include... Newark, Chester, Swarthmore, Arden, Talleyville, Greenville, Elam, Ashland, Concordville, Hockessin, Chelsea and Pike Creek. This includes Interstate 476 in Pennsylvania between mile markers 1 and 6.

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of southeast Pennsylvania, including the following areas, Delaware, Eastern Chester, Philadelphia and Western Chester. * WHEN...Until midnight EDT tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Showers and thunderstorms will continue to develop through this evening, capable of producing heavy downpours. Rainfall rates of 1 to 2 inches per hour, possibly as high as 3 inches per hour, are likely and short term training could result in flooding over southeast Pennsylvania. - http://www.weather.gov/safety/flood

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central and southeast Pennsylvania, including the following areas, in east central Pennsylvania, Berks. In southeast Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Western Chester and Western Montgomery. * WHEN...Until midnight EDT tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Showers and thunderstorms will continue to develop through this evening, capable of producing heavy downpours. Rainfall rates of 1 to 2 inches per hour, possibly as high as 3 inches per hour, are likely and short term training could result in flooding over southeast Pennsylvania. - http://www.weather.gov/safety/flood