Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 121, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 16, 2009, 5:56 PM EDT for Gloucester County, Salem County, New Jersey. It was in force for 64 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 16, 2009, 5:56 PM EDT (21:56 UTC)
- Expired
- Jul 16, 2009, 7:00 PM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 75 km from the middle of the area, began a volume at 21:57 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.9 hours before the alert went out and 80 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 162156 SVRPHI NJC015-033-162300- /O.NEW.KPHI.SV.W.0121.090716T2156Z-090716T2300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 556 PM EDT THU JUL 16 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY... NORTHERN SALEM COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 700 PM EDT * AT 555 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WOODSTOWN...OR 9 MILES NORTHEAST OF SALEM...AND MOVING SOUTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ELMER AROUND 630 PM EDT... OLIVET AROUND 635 PM EDT... CLAYTON AROUND 640 PM EDT... LAT...LON 3967 7498 3950 7512 3965 7547 3973 7542 TIME...MOT...LOC 2156Z 295DEG 17KT 3967 7536 $$ SZATKOWSKI
The 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, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 63 min |
| Jul 16, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer, Monmouth, Ocean | 70 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.