Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 146, NWS Philadelphia/Mount Holly

August 15, 2005Delaware County, Philadelphia County, Pennsylvania; Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 15, 2005, 12:02 AM EDT for Delaware County, Philadelphia County, Pennsylvania; Camden County, Gloucester County, New Jersey. It was in force for 43 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
Aug 15, 2005, 12:02 AM EDT (04:02 UTC)
Expired
Aug 15, 2005, 12:45 AM EDT
In force
43 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Camden County, NJ, Gloucester County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 04:06 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.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 4.0 hours before the alert went out and 215 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.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2005-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2485 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2005-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2485 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1376 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KPHI 150402
SVRPHI
NJC007-015-PAC045-101-150445-
/O.NEW.KPHI.SV.W.0146.050815T0402Z-050815T0445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1202 AM EDT MON AUG 15 2005

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA   
  PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA   
  WESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY
  THIS INCLUDES THE CITY OF CAMDEN
  NORTHERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 1245 AM EDT

* AT 1158 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR DREXEL HILL...OR ABOUT 11
  MILES WEST OF CAMDEN...AND MOVING EAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  FOLCROFT...EAST LANSDOWNE...GIBBSTOWN...YEADON...WOODBURY...
  GLOUCESTER CITY...BELLMAWR...TURNERSVILLE...MAGNOLIA...CHERRY HILL
  AND LINDENWOLD.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 4003 7538 3983 7540 3968 7495 3991 7495

$$

OHARA
1 follow-up statement
000 
WWUS51 KPHI 150425
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1225 AM EDT MON AUG 15 2005

NJC007-015-PAC045-101-150445-
/O.CON.KPHI.SV.W.0146.000000T0000Z-050815T0445Z/
CAMDEN NJ-GLOUCESTER NJ-DELAWARE PA-PHILADELPHIA PA-
1225 AM EDT MON AUG 15 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1245 AM EDT FOR
SOUTHWESTERN PHILADELPHIA...EASTERN DELAWARE...NORTHERN GLOUCESTER
AND WESTERN CAMDEN COUNTIES...

AT 1223 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR COLLINGSWOOD...OR
ABOUT NEAR CAMDEN...MOVING EAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
TURNERSVILLE...HADDONFIELD...MAGNOLIA...LAWNSIDE...TAVISTOCK...
SOMERDALE...HI-NELLA...STRATFORD...CHERRY HILL...LAUREL SPRINGS...
LINDENWOLD...CLEMENTON...PINE HILL...GIBBSBORO AND PINE VALLEY.

LAT...LON 4003 7538 3983 7540 3968 7495 3991 7495

$$

OHARA

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 8:31 PM EDTSevere Thunderstorm WarningPHINorthampton44 min
Aug 14, 9:32 PM EDTSevere Thunderstorm WarningPHILehigh, Northampton28 min
Aug 14, 9:37 PM EDTSevere Thunderstorm WarningPHIBucks38 min
Aug 14, 9:43 PM EDTSevere Thunderstorm WarningPHIBerks32 min
Aug 14, 9:58 PM EDTSevere Thunderstorm WarningPHIMontgomery32 min
Aug 14, 10:14 PM EDTSevere Thunderstorm WarningPHIBucks46 min
Aug 14, 10:36 PM EDTSevere Thunderstorm WarningPHIMontgomery39 min
Aug 14, 10:38 PM EDTSevere Thunderstorm WarningPHIChester52 min
Aug 14, 8:16 PM EDTSevere Thunderstorm WarningPHISussex44 min
Aug 14, 8:39 PM EDTSevere Thunderstorm WarningPHIWarren51 min
Aug 14, 8:54 PM EDTSevere Thunderstorm WarningPHIWarren36 min
Aug 14, 9:05 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris40 min
Aug 14, 10:48 PM EDTSevere Thunderstorm WarningPHIMercer42 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2005Severe Thunderstorm Warnings in New Jersey, 2005Every severe thunderstorm warning in 2005

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.