Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 216, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 2011, 7:59 PM EDT for Burlington County, Camden County, New Jersey. It was in force for 31 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 31, 2011, 7:59 PM EDT (23:59 UTC)
- Expired
- Jul 31, 2011, 8:30 PM EDT
- In force
- 31 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ
The radar
The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 00:03 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
Brookhaven, NY (KOKX), launched 12:00Z, 12.0 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
- 9 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1190 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
533 WUUS51 KPHI 312359 SVRPHI NJC005-007-010100- /O.NEW.KPHI.SV.W.0216.110731T2359Z-110801T0100Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 759 PM EDT SUN JUL 31 2011 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... CAMDEN COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 900 PM EDT * AT 754 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A DEVELOPING SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR CHERRY HILL... OR NEAR CAMDEN...AND MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CHERRY HILL AND MAGNOLIA AROUND 810 PM EDT... SPRINGDALE...GREENTREE AND MOUNT LAUREL AROUND 815 PM EDT... MARLTON AROUND 820 PM EDT... VOORHEES AND LINDENWOLD AROUND 825 PM EDT... MARLTON LAKES AND BERLIN AROUND 840 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY. && LAT...LON 3986 7465 3967 7489 3992 7513 3999 7503 TIME...MOT...LOC 2359Z 310DEG 13KT 3992 7504 $$ TFG
1 follow-up statement
946 WWUS51 KPHI 010030 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 830 PM EDT SUN JUL 31 2011 NJC005-007-010040- /O.CAN.KPHI.SV.W.0216.000000T0000Z-110801T0100Z/ CAMDEN NJ-BURLINGTON NJ- 830 PM EDT SUN JUL 31 2011 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL BURLINGTON AND CAMDEN COUNTIES IS CANCELLED... THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS AND IS RAPIDLY DISSIPATING. PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3986 7465 3967 7489 3992 7513 3999 7503 TIME...MOT...LOC 0030Z 310DEG 13KT 3985 7493 $$ TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 6:40 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 95 min |
| Jul 31, 7:39 PM EDT | Special Weather Statement | PHI | Camden | 66 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Every severe thunderstorm warning in 2011
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.