Flash Flood Warning 50, NWS Philadelphia/Mount Holly

Issued

Jul 9, 2025, 8:47 PM EDT (00:47 UTC)

Expired

Jul 9, 2025, 10:52 PM EDT

In force

2 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties Burlington County, NJ, Mercer County, NJ, Bucks County, PA, Philadelphia County, PA

The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 00:46 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.

459 
WGUS51 KPHI 100047
FFWPHI
NJC005-021-PAC017-101-100500-
/O.NEW.KPHI.FF.W.0050.250710T0047Z-250710T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
847 PM EDT Wed Jul 9 2025

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Central Mercer County in central New Jersey...
  Northwestern Burlington County in southern New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...
  Northeastern Philadelphia County in southeastern Pennsylvania...

* Until 100 AM EDT.

* At 847 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 1.5 to 2.5 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  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, Trenton, Bensalem, Ewing, Florence, Burlington, 
  Bristol, Riverside, Bordentown, Pennington, Beverly and Yardley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4014 7502 4015 7503 4033 7491 4034 7483
      4033 7472 4027 7460 4023 7458 4018 7459
      4018 7461 4016 7460 4007 7468 4006 7471
      4010 7482 4003 7495 4004 7499 4005 7497
      4006 7498 4012 7496 4013 7502

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

$$

Hoeflich

142 
WGUS71 KPHI 100252
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1052 PM EDT Wed Jul 9 2025

NJC005-021-PAC017-101-100302-
/O.CAN.KPHI.FF.W.0050.000000T0000Z-250710T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Mercer NJ-Bucks PA-Philadelphia PA-
1052 PM EDT Wed Jul 9 2025

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL MERCER, NORTHWESTERN 
BURLINGTON, SOUTHEASTERN BUCKS AND NORTHEASTERN 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 200 AM EDT for portions of 
central, northern, and southern New Jersey.

A Flood Watch remains in effect until 200 AM EDT for a portion of 
southeast Pennsylvania.

&&

LAT...LON 4014 7502 4015 7503 4033 7491 4034 7483
      4033 7472 4027 7460 4023 7458 4018 7459
      4018 7461 4016 7460 4007 7468 4006 7471
      4010 7482 4003 7495 4004 7499 4005 7497
      4006 7498 4012 7496 4013 7502

$$

Hoeflich

Flash Flood Warnings in New Jersey, 2025Flash Flood Warnings in Pennsylvania, 2025Every flash flood warning in 2025

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