Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 123, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 16, 2009, 7:05 PM EDT for 5 counties in New Jersey; Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 70 min. 6 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 16, 2009, 7:05 PM EDT (23:05 UTC)
- Expired
- Jul 16, 2009, 8:15 PM EDT
- In force
- 70 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 23:06 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 16, 7:12 PM EDT | HAIL 0.75 | Levittown, PA | PENNY SIZE HAIL REPORTED IN LEVITTOWN, ALONG WITH WINDS TO ABOUT 40 MPH. |
| Jul 16, 7:14 PM EDT | TSTM WND DMG | Maple Shade, NJ | LARGE TREE LIMB SNAPPED OFF IN MAPLE SHADE. |
| Jul 16, 7:14 PM EDT | HAIL 0.25 | Pennsauken, NJ | PEA SIZE HAIL REPORTED IN PENNSAUKEN. |
| Jul 16, 7:15 PM EDT | HAIL 1 | Morrisville, PA | HAIL RANGING FROM 0.50 TO 1 INCH IN DIAMETER WAS REPORTED IN MORRISVILLE. |
| Jul 16, 7:20 PM EDT | HAIL 0.5 | Maple Shade, NJ | PEA TO DIME SIZE HAIL REPORTED IN MAPLE SHADE. |
| Jul 16, 7:40 PM EDT | TSTM WND DMG | Voorhees, NJ | SEVERAL TREES AND TREE LIMBS REPORTED TO BE DOWN IN VOORHEES. |
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, 11.1 hours before the alert went out and 125 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
- 119 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 1096 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 79 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 162305
SVRPHI
NJC005-007-021-025-029-PAC017-091-101-170015-
/O.NEW.KPHI.SV.W.0123.090716T2305Z-090717T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
705 PM EDT THU JUL 16 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTH CENTRAL MERCER COUNTY IN CENTRAL NEW JERSEY...
THIS INCLUDES THE CITY OF TRENTON...
SOUTHWESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
THIS INCLUDES THE CITY OF PHILADELPHIA...
NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
NORTHERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF CAMDEN...
NORTHWESTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 815 PM EDT
* AT 702 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR
PHILADELPHIA...AND MOVING EAST AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
WISSINOMING...TACONY AND HOLMESBURG AROUND 710 PM EDT...
PALMYRA AROUND 715 PM EDT...
ANDALUSIA AROUND 720 PM EDT...
RIVERSIDE AROUND 725 PM EDT...
MOUNT LAUREL...WILLINGBORO AND MARLTON AROUND 735 PM EDT...
LUMBERTON AROUND 750 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4013 7444 3968 7480 3986 7510 3998 7525
4026 7489
TIME...MOT...LOC 2304Z 287DEG 18KT 4002 7509
$$
SZATKOWSKIThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 49 min |
| Jul 16, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 64 min |
| Jul 16, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 63 min |
| Jul 16, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 31 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.