Alert archive / New Jersey / Flash Flood Warnings in 2026
Flash Flood Warning 40, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 9, 2026, 4:32 PM EDT for Burlington County, Camden County, Gloucester County, 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 9, 2026, 4:32 PM EDT (20:32 UTC)
- Expired
- Jul 9, 2026, 8:30 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 20:33 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 9, 5:41 PM EDT | FLASH FLOOD | 1 Se Turnersville, NJ | Flooding on NJ 42 Both Directions North of CR 639/Ganttown Rd (Washington Twp). All lanes closed southbound, All lanes closed northbound. |
| Jul 9, 5:47 PM EDT | FLASH FLOOD | 1 Wsw Waterford Twp, NJ | Flooding on NJ 73 Both Directions At CR 710/Factory Rd/Hayes Mill Rd (Winslow Twp). All lanes closed southbound; All lanes closed northbound. |
| Jul 9, 8:00 PM EDT | RAIN 1.7 | 1 Nne Pitman, NJ | |
| Jul 9, 8:00 PM EDT | RAIN 2.83 | 2 S Pine Valley, NJ |
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, 8.5 hours before the alert went out and 214 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
- 20 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 986 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
954
WGUS51 KPHI 092032
FFWPHI
NJC005-007-015-100030-
/O.NEW.KPHI.FF.W.0040.260709T2032Z-260710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
432 PM EDT Thu Jul 9 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Southwestern Burlington County in southern New Jersey...
Southern Camden County in southern New Jersey...
Central Gloucester County in southern New Jersey...
* Until 830 PM EDT.
* At 432 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1 and 2 inches of rain have fallen. The expected rainfall rate is
1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2
inches are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
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...
Glassboro, Lindenwold, Hammonton, Pitman, Clayton, Berlin,
Chesilhurst, Sicklerville, Atco, Marlton Lakes, Williamstown and
Turnersville.
This includes Atlantic City Expressway between mile markers 35 and
44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3978 7510 3984 7492 3984 7486 3984 7472
3972 7472 3973 7473 3973 7474 3969 7478
3968 7492 3967 7523 3979 7513 3979 7512
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
Cooper3 follow-up statements
331
WGUS71 KPHI 092129 RRA
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
529 PM EDT Thu Jul 9 2026
NJC005-007-015-100030-
/O.CON.KPHI.FF.W.0040.000000T0000Z-260710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-
529 PM EDT Thu Jul 9 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR SOUTHWESTERN BURLINGTON, SOUTHERN CAMDEN AND CENTRAL
GLOUCESTER COUNTIES...
At 529 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1.5 and 2.5 inches of rain have fallen. The expected rainfall rate
is 1 to 3 inches in 1 hour. Additional rainfall amounts of 1.5 to
2.5 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Glassboro, Lindenwold, Hammonton, Pitman, Clayton, Berlin,
Chesilhurst, Sicklerville, Atco, Marlton Lakes, Williamstown and
Turnersville.
This includes Atlantic City Expressway between mile markers 35 and
44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3978 7510 3984 7492 3984 7486 3984 7472
3972 7472 3973 7473 3973 7474 3969 7478
3968 7492 3967 7523 3979 7513 3979 7512
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1-3 INCHES IN 1 HOUR
$$
Cooper872
WGUS71 KPHI 092219
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
619 PM EDT Thu Jul 9 2026
NJC005-007-015-100030-
/O.CON.KPHI.FF.W.0040.000000T0000Z-260710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-
619 PM EDT Thu Jul 9 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT THIS
EVENING FOR SOUTHWESTERN BURLINGTON, SOUTHERN CAMDEN AND CENTRAL
GLOUCESTER COUNTIES...
At 619 PM EDT, local law enforcement reported thunderstorms
producing heavy rain across the warned area. Between 2.5 and 3.5
inches of rain have fallen. The expected rainfall rate is 1 to 2
inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
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...
Glassboro, Lindenwold, Hammonton, Pitman, Clayton, Berlin,
Chesilhurst, Sicklerville, Atco, Marlton Lakes, Williamstown and
Turnersville.
This includes Atlantic City Expressway between mile markers 35 and
44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3978 7510 3984 7492 3984 7486 3984 7472
3972 7472 3973 7473 3973 7474 3969 7478
3968 7492 3967 7523 3979 7513 3979 7512
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
Cooper120
WGUS71 KPHI 100025
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
825 PM EDT Thu Jul 9 2026
NJC005-007-015-100035-
/O.EXP.KPHI.FF.W.0040.000000T0000Z-260710T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-
825 PM EDT Thu Jul 9 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 830 PM EDT THIS EVENING FOR
SOUTHWESTERN BURLINGTON, SOUTHERN CAMDEN AND CENTRAL GLOUCESTER
COUNTIES...
The heavy rain has ended. Please continue to heed remaining road
closures.
A Flood Watch remains in effect until 1200 AM EDT for portions of
northern Delaware and southern New Jersey.
A Flood Watch remains in effect until 1200 AM EDT for a portion of
southern New Jersey.
&&
LAT...LON 3978 7510 3984 7492 3984 7486 3984 7472
3972 7472 3973 7473 3973 7474 3969 7478
3968 7492 3967 7523 3979 7513 3979 7512
$$
CooperThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 2:09 AM EDT | Flood Watch | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 6 more | 19 hr |
| Jul 9, 1:22 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 4 hr |
| Jul 9, 1:37 PM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 6 hr |
| Jul 9, 2:00 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 5 hr |
| Jul 9, 2:42 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 4 hr |
| Jul 9, 3:01 PM EDT | Flash Flood Warning | PHI | Burlington | 4 hr |
| Jul 9, 5:30 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 45 min |
| Jul 9, 5:34 PM EDT | Special Marine Warning | PHI | 26 min | |
| Jul 9, 7:31 PM EDT | Flash Flood Warning | PHI | Atlantic, Cape May, Cumberland | 119 min |
Nearby
Flash Flood Warnings in New Jersey, 2026Every flash flood warning in 2026
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.