Alert archive / New Jersey / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 174, NWS Philadelphia/Mount Holly

August 3, 2002Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2002, 4:37 PM EDT for Gloucester County, New Jersey. It was in force for 53 min. 1 report 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: Aug 3, 2002, 4:37 PM EDT (20:37 UTC)
Expired: Aug 3, 2002, 5:30 PM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 67 km from the middle of the area, began a volume at 20:41 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
Aug 3, 5:15 PM EDT	Thunderstorm Wind 52 E	Mullica Hill, 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.6 hours before the alert went out and 200 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 652 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1152 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 93 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.

066 
WUUS51 KPHI 032037
SVRPHI
NJC015-032130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
437 PM EDT SAT AUG 3 2002

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY.

* UNTIL 530 PM EDT.

* AT 435 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 3 MILES SOUTHEAST OF CLAYTON...MOVING SOUTH
  AT 5 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  CLAYTON...
  GLASSBORO...
  NEWFIELD...
  VICTORY LAKES...
  WILLIAMSTOWN...

HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 55 MILES AN
HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE
UNTIL THE STORM HAS PASSED.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. IF OUTDOORS...STAY AWAY
FROM ISOLATED HIGH OBJECTS SUCH AS TREES.

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

$$

LAT...LON 3973 7502 3972 7516 3964 7516 3952 7500
          3961 7490

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 8:01 PM EDT	Severe Thunderstorm Warning	PHI	Warren	29 min
Aug 2, 8:09 PM EDT	Severe Thunderstorm Warning	PHI	Somerset	66 min
Aug 2, 8:32 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex	43 min
Aug 2, 8:38 PM EDT	Special Marine Warning	PHI		67 min
Aug 2, 8:40 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	65 min
Aug 2, 9:18 PM EDT	Special Marine Warning	PHI		87 min
Aug 2, 9:55 PM EDT	Special Marine Warning	PHI		65 min
Aug 2, 10:45 PM EDT	Special Marine Warning	PHI		90 min
Aug 2, 10:45 PM EDT	Special Marine Warning	PHI		90 min
Aug 2, 11:25 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	65 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2002 Every severe thunderstorm warning 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.