Alert archive / Delaware / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 24, NWS Philadelphia/Mount Holly

April 28, 2002Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 28, 2002, 10:22 PM EDT for Kent County, Delaware. It was in force for 38 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
Apr 28, 2002, 10:22 PM EDT (02:22 UTC)
Expired
Apr 28, 2002, 11:00 PM EDT
In force
38 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Kent County, DE

What was reported inside it

TimeReportWhereRemark
Apr 28, 10:25 PM EDTThunderstorm Wind 50 ELeipsic, 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.4 hours before the alert went out and 130 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 00:00Z on 2002-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2144 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 00:00Z on 2002-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.1939587897Sfc1 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
2144 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
814 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
248 m²/s²
Significant tornado parameter
3.3
Supercell composite
12.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 290222
SVRPHI
DEC001-290300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1022 PM EDT SUN APR 28 2002

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL KENT COUNTY IN CENTRAL DELAWARE.

* UNTIL 1100 PM EDT.

* AT 1019 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 3 MILES NORTH OF DOVER...MOVING SOUTHEAST AT
  50 MPH.

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.

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

$$

LAT...LON 3929 7548 3914 7560 3901 7544 3903 7506

Nearby

Severe Thunderstorm Warnings in Delaware, 2002Every 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.