Alert archive / Maryland / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 89, NWS Philadelphia/Mount Holly

June 5, 2002Cecil County, Kent County, Maryland; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 5, 2002, 9:03 PM EDT for Cecil County, Kent County, Maryland; New Castle County, Delaware. It was in force for 42 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
Jun 5, 2002, 9:03 PM EDT (01:03 UTC)
Expired
Jun 5, 2002, 9:45 PM EDT
In force
42 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties New Castle County, DE, Cecil County, MD, Kent County, MD

What was reported inside it

TimeReportWhereRemark
Jun 5, 9:10 PM EDTThunderstorm Wind 52 EBetterton, MD

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, 1.1 hours before the alert went out and 175 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 2002-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1191 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, Wallops Is Stn, VA at 00:00Z on 2002-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 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
1191 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
950 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
151 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 060103
SVRPHI
DEC003-MDC015-029-060145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
903 PM EDT WED JUN 5 2002

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND.
  NORTHEASTERN KENT COUNTY IN NORTHEAST MARYLAND.
  SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE.

* UNTIL 945 PM EDT.

* AT 859 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 5 MILES EAST OF BETTERTON...MOVING EAST AT
  40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MIDDLETOWN AT 920 PM.

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

$$

LAT...LON 3946 7604 3924 7614 3935 7549 3955 7559

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 5, 9:09 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's51 min
Jun 5, 9:25 PM EDTSevere Thunderstorm WarningPHITalbot50 min
Jun 5, 9:45 PM EDTSevere Thunderstorm WarningPHICaroline30 min
Jun 6, 3:52 PM EDTSevere Thunderstorm WarningPHIKent53 min
Jun 6, 4:46 PM EDTTornado WarningPHITalbot44 min
Jun 6, 4:24 PM EDTSevere Thunderstorm WarningPHINew Castle66 min
Jun 6, 4:48 PM EDTSevere Thunderstorm WarningPHIKent, New Castle42 min
Jun 6, 5:20 PM EDTSevere Thunderstorm WarningPHISussex40 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2002Severe 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.