Headline:
Flash Flood Warning issued August 6 at 12:19AM EDT until August 6 at 1:15AM EDT by NWS Mount Holly NJ
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
August 5, 2026 - 9:19pm
Expires:
August 5, 2026 - 10:15pm
Description:
At 1219 AM EDT, the public reported thunderstorms produced heavy
rain earlier tonight across portions of the warned area. Rain is
tapering off, and additional amounts of up to 0.5 inches are
possible in the warned area. Roadway flooding has been reported in
the Phoenixville area. Flash flooding is occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Public reported.
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, Norristown, Phoenixville, Lansdale, West Norriton,
East Norriton, Perkasie, Doylestown, Conshohocken, Hatboro,
Souderton and Ambler.
This includes the following highways...
Interstate 476 in Pennsylvania between mile markers 12 and 19.
Interstate 76 in Pennsylvania between mile markers 327 and 334.
Northeast Extension between mile markers 21 and 36.
Pennsylvania Turnpike between mile markers 317 and 344.
Instruction:
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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Area Description:
Bucks, PA; Chester, PA; Delaware, PA; Montgomery, PA
Forcast Office:
NWS Mount Holly NJ
Sender:
w-nws.webmaster@noaa.gov