Flash Flood Warning 135, NWS Philadelphia/Mount Holly

Issued

Aug 27, 2026, 2:38 PM EDT (18:38 UTC)

Expired

Aug 27, 2026, 6:45 PM EDT

In force

4 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties Camden County, NJ, Delaware County, PA, Philadelphia County, PA

The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 18:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

674 
WGUS51 KPHI 271838
FFWPHI
NJC007-PAC045-101-272245-
/O.NEW.KPHI.FF.W.0135.260827T1838Z-260827T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
238 PM EDT Thu Aug 27 2026

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Northwestern Camden County in southern New Jersey...
  East Central Delaware County in southeastern Pennsylvania...
  Southwestern Philadelphia County in southeastern Pennsylvania...

* Until 645 PM EDT.

* At 238 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Between 1 and 2.5 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...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  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, Gloucester City, Cherry Hill, Bellmawr,
  Yeadon, Palmyra, Folcroft and Magnolia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3998 7530 3998 7526 4000 7506 3999 7506
      4000 7503 3998 7501 3997 7502 3995 7501
      3994 7500 3984 7499 3984 7509 3989 7514
      3988 7519 3986 7522 3985 7526

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

$$

PHI

610 
WGUS71 KPHI 272237
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
Issued by National Weather Service New York NY
637 PM EDT Thu Aug 27 2026

NJC007-PAC045-101-272247-
/O.EXP.KPHI.FF.W.0135.000000T0000Z-260827T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Camden NJ-Delaware PA-Philadelphia PA-
637 PM EDT Thu Aug 27 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 645 PM EDT THIS EVENING FOR
NORTHWESTERN CAMDEN, EAST CENTRAL DELAWARE AND SOUTHWESTERN
PHILADELPHIA COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 400 AM EDT Friday for portions
of northern Delaware, New Jersey, and Pennsylvania.

&&

LAT...LON 3998 7530 3998 7526 4000 7506 3999 7506
      4000 7503 3998 7501 3997 7502 3995 7501
      3994 7500 3984 7499 3984 7509 3989 7514
      3988 7519 3986 7522 3985 7526

$$

PHI

Flash Flood Warnings in Pennsylvania, 2026Flash Flood Warnings in New Jersey, 2026Every flash flood warning in 2026

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.