Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 132, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 24, 2009, 7:11 PM EDT for Delaware County, Philadelphia County, Pennsylvania; Camden County, Gloucester County, Salem County, New Jersey. It was in force for 46 min. 2 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 24, 2009, 7:11 PM EDT (23:11 UTC)
- Expired
- Jul 24, 2009, 7:57 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 23:13 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 24, 7:15 PM EDT | TSTM WND DMG | 2 Se Gibbstown, NJ | WIRES REPORTED DOWN IN NORTHERN EAST GREENWICH TOWNSHIP. |
| Jul 24, 7:15 PM EDT | HAIL 0.88 | Brookhaven, PA | NICKEL SIZE HAIL REPORTED IN BROOKHAVEN AND UPLAND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.2 hours before the alert went out and 83 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
- 29 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 540 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 242311
SVRPHI
NJC007-015-033-PAC045-101-250015-
/O.NEW.KPHI.SV.W.0132.090724T2311Z-090725T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
711 PM EDT FRI JUL 24 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHWESTERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
WESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF CAMDEN...
GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
NORTHEASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 815 PM EDT
* AT 709 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
CHESTER...OR 9 MILES NORTHEAST OF WILMINGTON...AND MOVING EAST AT
25 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
BECKETT AROUND 715 PM EDT...
GIBBSTOWN AROUND 725 PM EDT...
WEST DEPTFORD AROUND 730 PM EDT...
MULLICA HILL AROUND 735 PM EDT...
WOODBURY HEIGHTS...DEPTFORD AND WOODBURY AROUND 740 PM EDT...
GLASSBORO AROUND 750 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HAIL UP TO ONE INCH IN DIAMETER HAS BEEN REPORTED WITH THIS STORM.
IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION TO
PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3954 7497 3971 7550 3972 7548 3976 7547
3979 7542 3980 7542 3982 7546 4001 7538
3995 7502 3991 7496 3987 7493 3978 7491
TIME...MOT...LOC 2310Z 283DEG 22KT 3981 7539
$$
SZATKOWSKI1 follow-up statement
000
WWUS51 KPHI 242357
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
757 PM EDT FRI JUL 24 2009
NJC007-015-033-PAC045-101-250007-
/O.CAN.KPHI.SV.W.0132.000000T0000Z-090725T0015Z/
SALEM NJ-CAMDEN NJ-GLOUCESTER NJ-DELAWARE PA-PHILADELPHIA PA-
757 PM EDT FRI JUL 24 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PHILADELPHIA...
EASTERN DELAWARE...GLOUCESTER...WESTERN CAMDEN AND NORTHEASTERN SALEM
COUNTIES IS CANCELLED...
THE SEVERE STORMS HAVE WEAKENED AND MOVED OUT OF THE AREA.
LAT...LON 3954 7497 3971 7550 3972 7548 3976 7547
3979 7542 3980 7542 3982 7546 4001 7538
3995 7502 3991 7496 3987 7493 3978 7491
TIME...MOT...LOC 2357Z 283DEG 22KT 3974 7502
$$
SZATKOWSKIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 62 min |
| Jul 24, 6:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 24, 7:37 PM EDT | Special Marine Warning | PHI | 83 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2009Severe Thunderstorm Warnings in Pennsylvania, 2009Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.