Bulletin: …FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR NORTHERN NEW CASTLE, NORTHWESTERN CAMDEN, NORTHWESTERN
GLOUCESTER, NORTHWESTERN SALEM, SOUTHEASTERN CHESTER, DELAWARE,
SOUTHEASTERN MONTGOMERY AND PHILADELPHIA COUNTIES…
At 839 PM EDT, trained weather spotters reported flash flooding with
water rescues around Delaware County. Between 1 and 2.5 inches of
rain have fallen. Flooding impacts will continue, but no additional
rainfall is expected. Flash flooding is already occurring.
HAZARD…Flash flooding caused by heavy rain.
SOURCE…Trained spotters reported.
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, Chester, West Deptford, Yeadon and Westtown.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
FLASH FLOOD…OBSERVED
Info:
Type: Flash Flood Warning
start_time_local: 2026-08-20T20:39:00-04:00
end_time_local: 2026-08-20T21:45:00-04:00
county_name: Montgomery County
state: PA
headline: Flash Flood Warning until THU 9:45 PM EDT
county_fips:
category: Met
url:
urgency: Immediate
severity: Severe
certainty: Likely
geographicname: Montgomery County
state_name: Pennsylvania