Alert archive / New Jersey / Flash Flood Warnings in 2025
Flash Flood Warning 51, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 10, 2025, 1:49 PM EDT for Atlantic County, Cumberland County, New Jersey. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 10, 2025, 1:49 PM EDT (17:49 UTC)
- Expired
- Jul 10, 2025, 5:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Atlantic County, NJ, Cumberland County, NJ
The radar
The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 17:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 10, 2:30 PM EDT | FLASH FLOOD | 3 Wsw Richland, NJ | Multiple roads were flooded and impassable in Buena Vista Township, including Union Road and Chestnut Avenue. Some vehicles have been stuck in flood waters. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.8 hours before the alert went out and 180 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.
353
WGUS51 KPHI 101749
FFWPHI
NJC001-011-102145-
/O.NEW.KPHI.FF.W.0051.250710T1749Z-250710T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
149 PM EDT Thu Jul 10 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Central Atlantic County in southern New Jersey...
Northeastern Cumberland County in southern New Jersey...
* Until 545 PM EDT.
* At 149 PM EDT, trained weather spotters reported heavy rain in
Central Atlantic County and Northeastern Cumberland County.
Between 1 and 2 inches of rain have fallen. The expected rainfall
rate is 0.5 to 1.5 inches in 1 hour. Flash flooding is already
occurring.
HAZARD...Life threatening flash flooding caused by heavy rain.
SOURCE...Trained spotters reported.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets, and underpasses.
* Some locations that may experience flash flooding include...
Vineland, Millville, Buena, Egg Harbor City, Weymouth, Estell
Manor, Port Republic, Mays Landing, Mizpah, Elwood-Magnolia,
Pomona and South Vineland.
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 3946 7509 3946 7508 3948 7507 3954 7480
3957 7461 3955 7447 3955 7446 3955 7445
3947 7449 3940 7457 3943 7474 3943 7485
3938 7501 3940 7507
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...0.5-1.5 INCHES IN 1 HOUR
$$
MJL1 follow-up statement
327
WGUS71 KPHI 102136
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
536 PM EDT Thu Jul 10 2025
NJC001-011-102146-
/O.EXP.KPHI.FF.W.0051.000000T0000Z-250710T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Cumberland NJ-
536 PM EDT Thu Jul 10 2025
...FLASH FLOOD WARNING WILL EXPIRE AT 545 PM EDT THIS AFTERNOON FOR
CENTRAL ATLANTIC AND NORTHEASTERN CUMBERLAND COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3946 7509 3946 7508 3948 7507 3954 7480
3957 7461 3955 7447 3955 7446 3955 7445
3947 7449 3940 7457 3943 7474 3943 7485
3938 7501 3940 7507
$$
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, 2:47 PM EDT | Flash Flood Warning | PHI | Cumberland | 94 min |
| 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.