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Flash Flood Warning — Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
Flash Flood Warning
Issued
3:38 PM CDT · Tue, Jul 21 2026
Expires
7:45 PM CDT · Tue, Jul 21 2026
Issuing Office
NWS KPHI

Affected Areas

Chester County, PA Delaware County, PA Montgomery County, PA Philadelphia County, PA

Official Bulletin

185
WGUS51 KPHI 212038
FFWPHI
DEC003-NJC005-007-015-033-PAC029-045-091-101-220045-
/O.NEW.KPHI.FF.W.0060.260721T2038Z-260722T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
438 PM EDT Tue Jul 21 2026

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Northern New Castle County in northern Delaware...
  Northwestern Burlington County in southern New Jersey...
  Northwestern Camden County in southern New Jersey...
  Northwestern Gloucester County in southern New Jersey...
  Northwestern Salem County in southern New Jersey...
  Southeastern Chester County in southeastern Pennsylvania...
  Delaware County in southeastern Pennsylvania...
  Southern Montgomery County in southeastern Pennsylvania...
  Philadelphia County in southeastern Pennsylvania...

* Until 845 PM EDT.

* At 438 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to 0.5 inches of rain have
  fallen. The expected rainfall rate is 1 to 2 inches in 1 hour.
  Additional rainfall amounts of 1 to 2 inches are possible in the
  warned area. Flash flooding is ongoing or expected to begin
  shortly.

  HAZARD...Life threatening flash flooding caused by
           thunderstorms.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets, and underpasses.

* Some locations that may experience flash flooding include...
  Philadelphia, Camden, Wilmington, Newark, Gloucester City,
  Chester, Deptford, West Deptford, Pennsville, Bellmawr, Yeadon and
  Westtown.

This includes the following highways...
	Interstate 295 in New Jersey between mile markers 0 and 27.
	Interstate 476 in Pennsylvania between mile markers 0 and 14.
	New Jersey Turnpike between exits 1 and 2.
	Interstate 76 in Pennsylvania between mile markers 336 and 351.
	Interstate 95 in Pennsylvania between mile markers 0 and 32.
	Interstate 676 in Pennsylvania between mile markers 0 and 1.
	Interstate 676 in New Jersey between mile markers 0 and 4.
	Interstate 76 in New Jersey between mile markers 0 and 3.
	Interstate 95 in Delaware between mile markers 0 and 23.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.

&&

LAT...LON 3972 7595 3991 7555 4005 7556 4005 7488
      3982 7516 3960 7553 3959 7578 3972 7579

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

Kruzdlo