Alert archive / New Jersey / Flash Flood Warnings in 2025
Flash Flood Warning 52, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 10, 2025, 2:47 PM EDT for Cumberland County, New Jersey. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 10, 2025, 2:47 PM EDT (18:47 UTC)
- Expired
- Jul 10, 2025, 4:21 PM EDT
- In force
- 94 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 70 km from the middle of the area, began a volume at 18:46 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.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.8 hours before the alert went out and 167 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 182 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
499
WGUS51 KPHI 101847
FFWPHI
NJC011-102300-
/O.NEW.KPHI.FF.W.0052.250710T1847Z-250710T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
247 PM EDT Thu Jul 10 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Central Cumberland County in southern New Jersey...
* Until 700 PM EDT.
* At 247 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. The expected rainfall rate is 0.5 to 1.5 inches in 1
hour. 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...
Millville and Bridgeton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3941 7525 3945 7526 3946 7522 3946 7516
3942 7512 3941 7518 3939 7525
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.5-1.5 INCHES IN 1 HOUR
$$
MJL1 follow-up statement
654
WGUS71 KPHI 102021
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
421 PM EDT Thu Jul 10 2025
NJC011-102031-
/O.CAN.KPHI.FF.W.0052.000000T0000Z-250710T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cumberland NJ-
421 PM EDT Thu Jul 10 2025
...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL CUMBERLAND COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3941 7525 3945 7526 3946 7522 3946 7516
3942 7512 3941 7518 3939 7525
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:26 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 9, 8:32 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| Jul 9, 8:47 PM EDT | Flash Flood Warning | PHI | Burlington, Mercer | 2 hr |
| Jul 9, 9:17 PM EDT | Special Marine Warning | PHI | 118 min | |
| Jul 9, 9:58 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 47 min |
| Jul 9, 10:34 PM EDT | Special Marine Warning | PHI | 86 min | |
| Jul 9, 10:57 PM EDT | Tornado Warning | PHI | Atlantic, Ocean | 33 min |
| Jul 9, 11:57 PM EDT | Areal Flood Warning | PHI | Atlantic, Cape May, Monmouth, Ocean | 4 hr |
| Jul 9, 11:59 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 10, 1:49 PM EDT | Flash Flood Warning | PHI | Atlantic, Cumberland | 4 hr |
| Jul 10, 6:00 PM EDT | Special Marine Warning | PHI | 60 min |
Nearby
Flash Flood Warnings in New Jersey, 2025Every flash flood warning in 2025
Sources
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.