Alert archive / New Jersey / Flash Flood Warnings in 2024
Flash Flood Warning 36, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 6, 2024, 6:39 PM EDT for Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 5 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
- Aug 6, 2024, 6:39 PM EDT (22:39 UTC)
- Expired
- Aug 7, 2024, 12:03 AM EDT
- In force
- 5 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), 59 km from the middle of the area, began a volume at 22:38 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 |
|---|---|---|---|
| Aug 6, 7:57 PM EDT | FLASH FLOOD | 1 E Merchantville, NJ | Trained spotter relays video of flash flooding at intersection of Haddonfield Rd and Maple Ave in Cherry Hill. |
| Aug 6, 8:00 PM EDT | FLASH FLOOD | Haddonfield, NJ | Multiple reports of water rescues in the Haddonfield and Collingswood areas. Time estimated from radar. |
| Aug 6, 9:45 PM EDT | RAIN 3.36 | 1 S Cinnaminson, NJ | Mesonet station CW2671 Cinnaminson. |
| Aug 6, 9:46 PM EDT | RAIN 2.13 | 1 W Fellowship, NJ | Mesonet station AW598 MOUNT LAUREL. |
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, 10.7 hours before the alert went out and 219 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
- 1440 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 797 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.2
The text
As transmitted.
951
WGUS51 KPHI 062239
FFWPHI
NJC005-007-015-070245-
/O.NEW.KPHI.FF.W.0036.240806T2239Z-240807T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
639 PM EDT Tue Aug 6 2024
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
West Central Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
North Central Gloucester County in southern New Jersey...
* Until 1045 PM EDT.
* At 639 PM 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...
Philadelphia, Camden, Gloucester City, Cherry Hill, Evesham, Mount
Laurel, Deptford, Voorhees, Lindenwold, Bellmawr, Woodbury and
Magnolia.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 22 and 41.
New Jersey Turnpike between exits 3 and 4.
Interstate 676 in New Jersey between mile markers 0 and 1.
Interstate 76 in New Jersey between mile markers 0 and 3.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3987 7519 3988 7517 3988 7515 3989 7514
3990 7513 3991 7513 3999 7506 3999 7490
3988 7487 3980 7508 3975 7520
FLASH FLOOD...RADAR INDICATED
$$
Fitzsimmons3 follow-up statements
217
WGUS71 KPHI 070029
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
829 PM EDT Tue Aug 6 2024
NJC005-007-015-070245-
/O.CON.KPHI.FF.W.0036.000000T0000Z-240807T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-
829 PM EDT Tue Aug 6 2024
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT THIS
EVENING FOR WEST CENTRAL BURLINGTON, NORTHWESTERN CAMDEN AND NORTH
CENTRAL GLOUCESTER COUNTIES...
At 829 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 2 and 3 inches of rain have
fallen. Additional rainfall amounts of 1 to 2 inches are possible in
the warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets, and underpasses.
Some locations that may experience flash flooding include...
Philadelphia, Camden, Gloucester City, Cherry Hill, Evesham, Mount
Laurel, Deptford, Voorhees, Lindenwold, Bellmawr, Woodbury and
Magnolia.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 22 and 41.
New Jersey Turnpike between exits 3 and 4.
Interstate 676 in New Jersey between mile markers 0 and 2.
Interstate 76 in New Jersey between mile markers 0 and 3.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3987 7519 3988 7517 3988 7515 3989 7514
3990 7513 3991 7513 3999 7506 3999 7490
3988 7487 3980 7508 3975 7520
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
Fitzsimmons609
WGUS51 KPHI 070223
FFWPHI
NJC005-007-015-070445-
/O.EXT.KPHI.FF.W.0036.000000T0000Z-240807T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1023 PM EDT Tue Aug 6 2024
The National Weather Service in Mount Holly has extended the
* Flash Flood Warning for...
West Central Burlington County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
North Central Gloucester County in southern New Jersey...
* Until 1245 AM EDT.
* At 1023 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. Additional rainfall amounts up to 1 inch are possible
in 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...
Philadelphia, Camden, Gloucester City, Cherry Hill, Evesham, Mount
Laurel, Deptford, Voorhees, Lindenwold, Bellmawr, Woodbury and
Magnolia.
This includes the following highways...
Interstate 295 in New Jersey between mile markers 22 and 41.
New Jersey Turnpike between exits 3 and 4.
Interstate 676 in New Jersey between mile markers 0 and 2.
Interstate 76 in New Jersey between mile markers 0 and 3.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 3987 7519 3988 7517 3988 7515 3989 7514
3990 7513 3991 7513 3999 7506 3999 7490
3988 7487 3980 7508 3975 7520
FLASH FLOOD...RADAR INDICATED
$$
MPS051
WGUS71 KPHI 070403 RRC
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1203 AM EDT Wed Aug 7 2024
NJC005-007-015-070413-
/O.CAN.KPHI.FF.W.0036.000000T0000Z-240807T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Burlington NJ-Camden NJ-Gloucester NJ-
1203 AM EDT Wed Aug 7 2024
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL BURLINGTON,
NORTHWESTERN CAMDEN AND NORTH CENTRAL GLOUCESTER COUNTIES...
The heavy rain has ended. While the flash flood threat has ended,
flooding remains an issue and a new flood warning will be issued.
Please continue to heed remaining road closures.
A Flood Watch remains in effect until 1200 PM EDT Wednesday for
portions of northern Delaware, New Jersey, and Pennsylvania.
&&
LAT...LON 3987 7519 3988 7517 3988 7515 3989 7514
3990 7513 3991 7513 3999 7506 3999 7490
3988 7487 3980 7508 3975 7520
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 9:37 AM EDT | Heat Advisory | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more | 9 hr |
| Aug 6, 9:39 AM EDT | Small Craft Advisory | PHI | 10 hr | |
| Aug 6, 2:04 PM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 6, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 19 min |
| Aug 6, 2:55 PM EDT | Special Marine Warning | PHI | 65 min | |
| Aug 6, 3:15 PM EDT | Special Marine Warning | PHI | 60 min | |
| Aug 6, 3:18 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 27 min |
| Aug 6, 3:21 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 23 min |
| Aug 6, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth | 37 min |
| Aug 6, 3:45 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 2 hr |
| Aug 6, 3:49 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth | 56 min |
| Aug 6, 4:10 PM EDT | Special Marine Warning | PHI | 65 min | |
| Aug 6, 4:13 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Monmouth | 8 hr |
| Aug 6, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Somerset | 43 min |
| Aug 6, 4:37 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 40 min |
| Aug 6, 4:55 PM EDT | Flash Flood Warning | PHI | Monmouth | 6 hr |
| Aug 6, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 49 min |
| Aug 6, 5:06 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 54 min |
| Aug 6, 5:29 PM EDT | Flash Flood Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 6 hr |
| Aug 6, 5:36 PM EDT | Flash Flood Warning | PHI | Monmouth, Ocean | 8 hr |
| Aug 6, 6:37 PM EDT | Flash Flood Warning | PHI | Warren | 3 hr |
| Aug 6, 6:46 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 4 hr |
| Aug 6, 6:57 PM EDT | Flash Flood Warning | PHI | Warren | 3 hr |
| Aug 6, 7:04 PM EDT | Flash Flood Warning | PHI | Burlington | 5 hr |
| Aug 6, 7:24 PM EDT | Flash Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 5 hr |
Nearby
Flash Flood Warnings in New Jersey, 2024Every flash flood warning in 2024
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.