Alert archive / New Jersey / Flash Flood Warnings in 2009
Flash Flood Warning 55, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 22, 2009, 6:32 PM EDT for Camden County, Gloucester County, New Jersey. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 22, 2009, 6:32 PM EDT (22:32 UTC)
- Expired
- Aug 22, 2009, 9:49 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Camden County, NJ, Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 22:32 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 12:00Z, 10.5 hours before the alert went out and 205 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
- 1451 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 643 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 222232
FFWPHI
NJC007-015-230230-
/O.NEW.KPHI.FF.W.0055.090822T2232Z-090823T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
632 PM EDT SAT AUG 22 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 1030 PM EDT
* AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN CAPABLE OF PRODUCING ONE INCH OF RAIN IN A VERY
SHORT PERIOD OF TIME. ADDITIONAL RAIN IS EXPECTED THIS EVENING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3952 7498 3966 7520 3966 7524 3970 7531
3979 7539 3985 7527 3988 7515 3992 7514
3996 7506 3984 7492 3979 7491 3977 7489
3978 7485 3971 7477
$$
JJM1 follow-up statement
000
WGUS71 KPHI 230149
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
949 PM EDT SAT AUG 22 2009
NJC007-015-230158-
/O.CAN.KPHI.FF.W.0055.000000T0000Z-090823T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-
949 PM EDT SAT AUG 22 2009
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR GLOUCESTER AND
CAMDEN COUNTIES...
WHILE SHOWERS ARE EXPECTED OVERNIGHT...HEAVY RAIN HAS NOW ENDED. THE
FLASH FLOOD WARNING HAS THEREFORE BEEN CANCELLED.
LAT...LON 3952 7498 3966 7520 3966 7524 3970 7531
3979 7539 3985 7527 3988 7515 3992 7514
3996 7506 3984 7492 3979 7491 3977 7489
3978 7485 3971 7477
$$
JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 1:28 AM EDT | Flash Flood Warning | PHI | Camden, Cumberland, Gloucester, Salem | 4 hr |
| Aug 22, 1:40 AM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 1 more | 3 hr |
| Aug 22, 3:36 AM EDT | Flash Flood Warning | PHI | Somerset | 4 hr |
| Aug 22, 4:26 AM EDT | Areal Flood Advisory | PHI | Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem | 6 hr |
| Aug 22, 5:42 AM EDT | Areal Flood Advisory | PHI | Camden, Cumberland, Gloucester, Salem | 3 hr |
| Aug 22, 9:01 AM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 3 hr |
| Aug 22, 6:02 PM EDT | Flash Flood Warning | PHI | Mercer | 4 hr |
| Aug 22, 6:21 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 3 hr |
| Aug 22, 7:32 PM EDT | River Flood Warning | PHI | Mercer | 19 hr |
Nearby
Flash Flood Warnings in New Jersey, 2009Every flash flood warning in 2009
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.