Alert archive / New Jersey / Flash Flood Warnings in 2025
Flash Flood Warning 85, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 31, 2025, 3:10 PM EDT for 6 counties in New Jersey. It was in force for 4 hr. 4 reports 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 31, 2025, 3:10 PM EDT (19:10 UTC)
- Expired
- Jul 31, 2025, 7:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 41 km from the middle of the area, began a volume at 19:13 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 31, 4:18 PM EDT | FLASH FLOOD | 2 S Rancocas, NJ | Picture of water covering Timberline Drive near Poplar Road shared on social media. |
| Jul 31, 4:20 PM EDT | RAIN 4.78 | 2 Wnw Manchester Twp, NJ | Fort Dix mesonet. Rainfall in the last 2 hours. |
| Jul 31, 5:10 PM EDT | RAIN 6 | Browns Mills, NJ | Report of 6 inches of rain. |
| Jul 31, 6:23 PM EDT | FLASH FLOOD | Whiting, NJ | Flood water halfway up the side of vehicles in Whiting. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.2 hours before the alert went out and 196 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
- 1000 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 970 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The text
As transmitted.
216
WGUS51 KPHI 311910
FFWPHI
NJC005-007-015-021-025-029-312315-
/O.NEW.KPHI.FF.W.0085.250731T1910Z-250731T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
310 PM EDT Thu Jul 31 2025
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southeastern Mercer County in central New Jersey...
Southwestern Monmouth County in central New Jersey...
Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
North Central Gloucester County in southern New Jersey...
Northwestern Ocean County in southern New Jersey...
* Until 715 PM EDT.
* At 310 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding caused by
thunderstorms.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets, and underpasses.
* Some locations that may experience flash flooding include...
Philadelphia, Toms River, Trenton, Camden, Gloucester City,
Lakewood, Cherry Hill, Jackson, Evesham, Mount Laurel, Willingboro
and Deptford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3992 7513 4001 7505 4007 7494 4008 7486
4013 7482 4012 7478 4015 7472 4021 7477
4025 7470 4016 7419 3992 7436 3975 7500
3975 7512 3981 7523 3988 7517 3989 7514
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MPS2 follow-up statements
916
WGUS71 KPHI 311958
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
358 PM EDT Thu Jul 31 2025
NJC005-007-015-021-025-029-312315-
/O.CON.KPHI.FF.W.0085.000000T0000Z-250731T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Mercer NJ-Monmouth NJ-Ocean
NJ-
358 PM EDT Thu Jul 31 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM EDT THIS
EVENING FOR SOUTHEASTERN MERCER, SOUTHWESTERN MONMOUTH, BURLINGTON,
NORTHWESTERN CAMDEN, NORTH CENTRAL GLOUCESTER AND NORTHWESTERN OCEAN
COUNTIES...
At 358 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 6 inches of rain have
fallen. Additional rainfall amounts of 2 to 3 inches are possible
across portions of the warned area. The highest rainfall totals so
far are across eastern Burlington county and western Ocean county
where as much as 6 inches of rain has fallen. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets, and underpasses.
Some locations that may experience flash flooding include...
Philadelphia, Toms River, Trenton, Camden, Gloucester City,
Lakewood, Cherry Hill, Jackson, Evesham, Mount Laurel, Willingboro
and Deptford.
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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3992 7513 4001 7505 4007 7494 4008 7486
4013 7482 4012 7478 4015 7472 4021 7477
4025 7470 4016 7419 3992 7436 3975 7500
3975 7512 3981 7523 3988 7517 3989 7514
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
MPS025
WGUS71 KPHI 312307
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
707 PM EDT Thu Jul 31 2025
NJC005-007-015-021-025-029-312317-
/O.EXP.KPHI.FF.W.0085.000000T0000Z-250731T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-Mercer NJ-Monmouth NJ-Ocean
NJ-
707 PM EDT Thu Jul 31 2025
...FLASH FLOOD WARNING WILL EXPIRE AT 715 PM EDT THIS EVENING FOR
SOUTHEASTERN MERCER, SOUTHWESTERN MONMOUTH, BURLINGTON, NORTHWESTERN
CAMDEN, NORTH CENTRAL GLOUCESTER AND NORTHWESTERN OCEAN COUNTIES...
Although the heaviest rain has ended, continue to heed any road
closures that may be in effect due to earlier flooding.
A Flood Watch remains in effect until 1200 AM EDT for portions of
Delaware, northeast Maryland, New Jersey, and Pennsylvania.
&&
LAT...LON 3992 7513 4001 7505 4007 7494 4008 7486
4013 7482 4012 7478 4015 7472 4021 7477
4025 7470 4016 7419 3992 7436 3975 7500
3975 7512 3981 7523 3988 7517 3989 7514
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 2:24 AM EDT | Small Craft Advisory | PHI | 70 hr | |
| Jul 31, 3:56 AM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 4 days |
| Jul 31, 1:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 48 min |
| Jul 31, 1:48 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 4 hr |
| Jul 31, 1:49 PM EDT | Tornado Warning | PHI | Middlesex, Somerset | 26 min |
| Jul 31, 1:55 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 18 min |
| Jul 31, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 40 min |
| Jul 31, 2:27 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 4 hr |
| Jul 31, 2:30 PM EDT | Flash Flood Warning | PHI | Morris | 4 hr |
| Jul 31, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex | 52 min |
| Jul 31, 2:46 PM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 4 hr |
| Jul 31, 2:52 PM EDT | Flash Flood Warning | PHI | Middlesex | 4 hr |
| Jul 31, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 50 min |
| Jul 31, 2:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jul 31, 3:03 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 42 min |
| Jul 31, 3:10 PM EDT | Tornado Warning | PHI | Camden, Gloucester, Salem | 35 min |
| Jul 31, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 48 min |
| Jul 31, 3:49 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester, Salem | 4 hr |
| Jul 31, 4:31 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 3 hr |
| Jul 31, 4:36 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jul 31, 4:39 PM EDT | Special Marine Warning | PHI | 36 min | |
| Jul 31, 4:43 PM EDT | Flash Flood Warning | PHI | Monmouth, Ocean | 4 hr |
| Jul 31, 5:21 PM EDT | Flash Flood Warning | PHI | Cumberland | 3 hr |
| Jul 31, 5:53 PM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Cape May, Ocean | 4 hr |
| Jul 31, 6:17 PM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 31, 6:42 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jul 31, 7:29 PM EDT | Special Marine Warning | PHI | 91 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.