Alert archive / New Jersey / Flash Flood Warnings in 2021
Flash Flood Warning 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 2, 2021, 1:11 PM EDT for Gloucester County, Salem County, New Jersey. It was in force for 59 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
- Jul 2, 2021, 1:11 PM EDT (17:11 UTC)
- Expired
- Jul 2, 2021, 2:10 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 17:12 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.2 hours before the alert went out and 203 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
- 212 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 786 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
217
WGUS51 KPHI 021711
FFWPHI
NJC015-033-022115-
/O.NEW.KPHI.FF.W.0011.210702T1711Z-210702T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
111 PM EDT Fri Jul 2 2021
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northwestern Gloucester County in southern New Jersey...
Northwestern Salem County in southern New Jersey...
* Until 515 PM EDT.
* At 111 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1 and 3 inches of rain have fallen. Additional rainfall amounts of
0.5 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 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 will experience flash flooding include...
Chester, Deptford, West Deptford, Glassboro, Woodbury, Pitman,
Carneys Point, Paulsboro, Penns Grove, Westville, Woodbury
Heights, and National Park.
This includes the following highways...
New Jersey Turnpike near exit 2.
Interstate 295 in New Jersey between mile markers 4 and 25.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3980 7541 3981 7541 3984 7535 3985 7526
3988 7515 3985 7510 3975 7508 3971 7516
3968 7527 3970 7548 3976 7546
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Staarmann1 follow-up statement
449
WGUS71 KPHI 021810
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
210 PM EDT Fri Jul 2 2021
NJC015-033-021820-
/O.CAN.KPHI.FF.W.0011.000000T0000Z-210702T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gloucester NJ-Salem NJ-
210 PM EDT Fri Jul 2 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN GLOUCESTER AND
NORTHWESTERN SALEM COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3980 7541 3981 7541 3984 7535 3985 7526
3988 7515 3985 7510 3975 7508 3971 7516
3968 7527 3970 7548 3976 7546
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:31 PM EDT | Special Weather Statement | PHI | Salem | 29 min |
| Jul 1, 11:40 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 39 min |
| Jul 2, 4:31 AM EDT | Areal Flood Warning | PHI | Cumberland | 6 hr |
| Jul 2, 10:40 AM EDT | Areal Flood Warning | PHI | Cumberland | 6 hr |
| Jul 2, 11:16 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 119 min |
| Jul 2, 12:12 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 97 min |
| Jul 2, 1:47 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean, Salem | 116 min |
| Jul 2, 3:48 PM EDT | Small Craft Advisory | PHI | 31 hr | |
| Jul 2, 4:47 PM EDT | Special Weather Statement | PHI | Sussex | 28 min |
| Jul 2, 6:42 PM EDT | Special Weather Statement | PHI | Warren | 48 min |
| Jul 2, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 52 min |
| Jul 2, 7:25 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 50 min |
| Jul 2, 7:33 PM EDT | Special Weather Statement | PHI | Cumberland | 42 min |
| Jul 2, 7:41 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 3 hr |
Nearby
Flash Flood Warnings in New Jersey, 2021Every flash flood warning in 2021
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.