Alert archive / New Jersey / Flash Flood Warnings in 2025

Flash Flood Warning 23, NWS Philadelphia/Mount Holly

June 30, 2025Atlantic County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 30, 2025, 4:32 AM EDT for Atlantic County, Cumberland County, New Jersey. It was in force for 103 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: Jun 30, 2025, 4:32 AM EDT (08:32 UTC)
Expired: Jun 30, 2025, 6:15 AM EDT
In force: 103 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Atlantic County, NJ, Cumberland County, NJ

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 08:35 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 00:00Z, 8.5 hours before the alert went out and 171 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2289 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

542 
WGUS51 KPHI 300832
FFWPHI
NJC001-011-301130-
/O.NEW.KPHI.FF.W.0023.250630T0832Z-250630T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
432 AM EDT Mon Jun 30 2025

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Southwestern Atlantic County in southern New Jersey...
  Northeastern Cumberland County in southern New Jersey...

* Until 730 AM EDT.

* At 432 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across 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...
  Vineland, Millville, Cumberland, Buena, Laurel Lake, Estell Manor, 
  South Vineland, Dorothy and Mizpah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3943 7508 3953 7494 3950 7474 3938 7482
      3930 7506

FLASH FLOOD...RADAR INDICATED

$$

PO

2 follow-up statements

026 
WGUS71 KPHI 300926
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
526 AM EDT Mon Jun 30 2025

NJC001-011-301130-
/O.CON.KPHI.FF.W.0023.000000T0000Z-250630T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Cumberland NJ-
526 AM EDT Mon Jun 30 2025

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 AM EDT THIS 
MORNING FOR SOUTHWESTERN ATLANTIC AND NORTHEASTERN CUMBERLAND 
COUNTIES...

At 526 AM EDT, the public reported thunderstorms producing heavy 
rain across the warned area. Flash flooding is ongoing or expected 
to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Public reported flooding of parking areas near Vineland.

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...
  Vineland, Millville, Cumberland, Buena, Laurel Lake, Estell Manor, 
  South Vineland, Dorothy and Mizpah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3943 7508 3953 7494 3950 7474 3938 7482
      3930 7505

FLASH FLOOD...OBSERVED

$$

PO

192 
WGUS71 KPHI 301015
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
615 AM EDT Mon Jun 30 2025

NJC001-011-301025-
/O.CAN.KPHI.FF.W.0023.000000T0000Z-250630T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Cumberland NJ-
615 AM EDT Mon Jun 30 2025

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN 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. More heavy 
rains are possible later today.

&&

LAT...LON 3943 7508 3953 7494 3950 7474 3938 7482
      3930 7505

$$

PO

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 2:23 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	52 min
Jun 30, 3:19 AM EDT	Heat Advisory	PHI	Burlington, Camden, Gloucester, Mercer	13 hr
Jun 30, 3:20 AM EDT	Small Craft Advisory	PHI		47 hr
Jun 30, 3:44 AM EDT	Special Marine Warning	PHI		61 min
Jun 30, 4:42 AM EDT	Special Marine Warning	PHI		93 min
Jun 30, 5:20 AM EDT	Special Marine Warning	PHI		85 min
Jun 30, 5:37 AM EDT	Severe Thunderstorm Warning	PHI	Cape May	23 min
Jun 30, 7:51 AM EDT	Special Marine Warning	PHI		37 min
Jun 30, 12:45 PM EDT	Special Marine Warning	PHI		60 min
Jun 30, 1:28 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	47 min
Jun 30, 1:41 PM EDT	Special Marine Warning	PHI		64 min
Jun 30, 1:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	46 min
Jun 30, 2:19 PM EDT	Flash Flood Warning	PHI	Camden, Gloucester	4 hr
Jun 30, 2:35 PM EDT	Special Marine Warning	PHI		55 min
Jun 30, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	46 min
Jun 30, 3:52 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	38 min
Jun 30, 3:53 PM EDT	Special Marine Warning	PHI		67 min
Jun 30, 4:03 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Somerset	42 min
Jun 30, 4:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Mercer, Middlesex, Somerset	51 min

Nearby

Flash Flood Warnings in New Jersey, 2025 Every 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.