Alert archive / New Jersey / Tornado Warnings in 2002

Tornado Warning 7, NWS Philadelphia/Mount Holly

May 13, 2002Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this tornado warning at May 13, 2002, 5:23 PM EDT for Camden County, Gloucester County, New Jersey. It was in force for 22 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 13, 2002, 5:23 PM EDT (21:23 UTC)
Expired
May 13, 2002, 5:45 PM EDT
In force
22 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Camden County, NJ, Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 21:23 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

TimeReportWhereRemark
May 13, 5:30 PM EDTHail 0.75Chesilhurst, NJ
May 13, 5:30 PM EDTThunderstorm Wind 50 EChesilhurst, NJ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 13, 1:30 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.4 hours before the alert went out and 206 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, Wallops Is Stn, VA at 12:00Z on 2002-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1109 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 12:00Z on 2002-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 square meters per square second.193958Sfc1 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
1109 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KPHI 132123
TORPHI
NJC007-015-132145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
522 PM EDT MON MAY 13 2002

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY
  EAST CENTRAL GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 545 PM EDT.

* AT 518 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES SOUTHWEST OF  
  WILLIAMSTOWN...MOVING EAST AT 35 MPH. A SKYWARN SPOTTER REPORTED
  A FUNNEL CLOUD WAS LOWERING TOWARD THE GROUND IN THAT AREA.
  THIS STORM COULD PRODUCE A   TORNADO AT ANY TIME.

* THE TORNADO IS EXPECTED TO BE NEAR...
  LINDENWOLD AT 530 PM.
  CHESILHURST...BERLIN AT 535 PM.

THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE WARNED AREA.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MONDAY EVENING FOR
SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.

$$

LAT...LON 3974 7513 3961 7496 3971 7479 3986 7494

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 8:08 PM EDTSpecial Marine WarningPHI67 min
May 12, 8:08 PM EDTSpecial Marine WarningPHI67 min
May 12, 8:08 PM EDTSpecial Marine WarningPHI67 min
May 12, 10:48 PM EDTSpecial Marine WarningPHI57 min
May 12, 10:48 PM EDTSpecial Marine WarningPHI57 min
May 12, 10:48 PM EDTSpecial Marine WarningPHI57 min
May 13, 4:43 PM EDTSevere Thunderstorm WarningPHICumberland, Salem47 min
May 13, 4:58 PM EDTTornado WarningPHISalem32 min
May 13, 5:11 PM EDTSevere Thunderstorm WarningPHIGloucester34 min
May 13, 5:18 PM EDTSevere Thunderstorm WarningPHICamden37 min
May 13, 5:33 PM EDTSevere Thunderstorm WarningPHIBurlington42 min
May 13, 5:34 PM EDTSevere Thunderstorm WarningPHIBurlington41 min
May 13, 5:41 PM EDTSevere Thunderstorm WarningPHIAtlantic19 min
May 13, 5:53 PM EDTTornado WarningPHIBurlington, Ocean37 min
May 13, 5:58 PM EDTSpecial Marine WarningPHI92 min

Nearby

Tornado Warnings in New Jersey, 2002Every tornado warning in 2002Tornadoes in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.