Severe · Flash Flood WarningThis alert has expired. It is kept for reference.
Flash Flood Warning issued September 3 at 3:38AM EDT until September 3
Affecting New Castle, DE; Burlington, NJ; Camden, NJ; Gloucester, NJ; Bucks, PA; Chester, PA; Delaware, PA; Montgomery, PA; Philadelphia, PA
In effect until: Sep 3, 2026, 9:30 AM
New Castle, DE; Burlington, NJ; Camden, NJ; Gloucester, NJ; Bucks, PA; Chester, PA; Delaware, PA; Montgomery, PA; Philadelphia, PA
Likely impact across 9 counties in DE, NJ and PA; effects through 9:30 AM.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Affected areas
Philadelphia
Read the original bulletin (official text)
At 338 AM EDT, Doppler radar and automated rain gauges indicated thunderstorms produced heavy rain across the warned area. Additional storms will impact the warned area through 530 AM. Between 0.5 and 1 inch of rain has fallen. The expected rainfall rate is 0.5 to 1 inch in 30 minutes. Additional rainfall amounts of 0.5 to 1.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Philadelphia, Camden, Wilmington, Newark, West Chester, Gloucester City, Cherry Hill, Bensalem, Mount Laurel, Norristown, Chester and Willingboro.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™