Alert archive / Delaware / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 96, NWS Philadelphia/Mount Holly

June 6, 2002Kent County, New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 6, 2002, 4:48 PM EDT for Kent County, New Castle County, Delaware. It was in force for 42 min. 4 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: Jun 6, 2002, 4:48 PM EDT (20:48 UTC)
Expired: Jun 6, 2002, 5:30 PM EDT
In force: 42 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

Counties Kent County, DE, New Castle County, DE

What was reported inside it

Time	Report	Where
Jun 6, 4:55 PM EDT	Hail 1.5	Smyrna, DE
Jun 6, 4:55 PM EDT	Thunderstorm Wind 57 E	Smyrna, DE
Jun 6, 5:15 PM EDT	Thunderstorm Wind 52 M	(Dov)Dover Afb, DE
Jun 6, 5:25 PM EDT	Hail 0.75	Dover, DE

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.

Issued	Product	Office	Lasted
Jun 6, 3:30 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.8 hours before the alert went out and 48 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: 326 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1175 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 062048
SVRPHI
DEC001-003-062130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
447 PM EDT THU JUN 6 2002

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENT COUNTY IN CENTRAL DELAWARE.
  SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE.

* UNTIL 530 PM EDT.

* AT 446 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 6 MILES WEST OF CLAYTON...MOVING EAST AT 30
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLAYTON AT 455 PM.
  SMYRNA AT 500 PM.
  DELAWARE CITY AT 505 PM.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM THURSDAY
EVENING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND AND
SOUTHERN NEW JERSEY.

$$

LAT...LON 3938 7579 3893 7570 3943 7552 3966 7560

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 5, 9:03 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	42 min
Jun 6, 4:24 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	66 min
Jun 6, 5:20 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	40 min

Nearby

Severe Thunderstorm Warnings in Delaware, 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.