Alert archive / Texas / Tornado Warnings in 2002

Tornado Warning 20, NWS San Angelo, TX

April 7, 2002Throckmorton County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 7, 2002, 3:30 PM CDT for Throckmorton County, Texas. It was in force for 60 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 7, 2002, 3:30 PM CDT (20:30 UTC)
Expired
Apr 7, 2002, 4:30 PM CDT
In force
60 min
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County Throckmorton County, TX

What was reported inside it

TimeReportWhereRemark
Apr 7, 3:33 PM CDTTornado F0Throckmorton, TXA supercell thunderstorm dropped the first of its 3 tornadoes across Throckmorton County. This initial tornado was short lived and weak, producing no injuries and no damage.
Apr 7, 3:34 PM CDTTornado F2Throckmorton, TXImmediately after the first tornado dissipated, a second larger, more stable multiple vortex tornado developed. Tracking along a 7 mile long path across western Throckmorton County, this tornado would reach over three quarters of a mile wide. Fortunately, the
Apr 7, 3:50 PM CDTTornado F0Throckmorton, TXThe third and final tornado across Throckmorton County was similar to the first, a brief tornado touchdown in open country that produced no damage.

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
Apr 7, 1:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.5 hours before the alert went out and 279 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, Norman, OK at 12:00Z on 2002-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Norman, OK at 12:00Z on 2002-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 368 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
460 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
368 m²/s²
0-3 km storm-relative helicity
553 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 
WFUS54 KSJT 072030
TORSJT
TXC447-072130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
330 PM CDT SUN APR 7 2002

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  THROCKMORTON COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 430 PM CDT

* AT 327 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 13 MILES WEST OF THROCKMORTON...MOVING NORTHEAST
  AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   THROCKMORTON AT 345 PM CDT

A TORNADO MAY FORM AT ANY TIME. TAKE COVER NOW ABANDON MOBILE HOMES
AND VEHICLES FOR MORE SUBSTANTIAL SHELTER.

LAT...LON 3327 9946 3311 9938 3318 9902 3334 9906
          3338 9941

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 6, 7:29 PM CSTSevere Thunderstorm WarningSJTTaylor31 min
Apr 7, 1:32 PM CDTSevere Thunderstorm WarningSJTSterling58 min
Apr 7, 2:02 PM CDTTornado WarningSJTCrockett58 min
Apr 7, 2:35 PM CDTSevere Thunderstorm WarningSJTHaskell40 min
Apr 7, 2:57 PM CDTTornado WarningSJTCrockett48 min
Apr 7, 3:07 PM CDTSevere Thunderstorm WarningSJTThrockmorton53 min
Apr 7, 3:10 PM CDTSevere Thunderstorm WarningSJTSterling65 min
Apr 7, 3:12 PM CDTSevere Thunderstorm WarningSJTTaylor33 min
Apr 7, 3:14 PM CDTSevere Thunderstorm WarningSJTTom Green46 min
Apr 7, 3:17 PM CDTSevere Thunderstorm WarningSJTCoke58 min
Apr 7, 3:19 PM CDTSevere Thunderstorm WarningSJTHaskell41 min
Apr 7, 3:25 PM CDTTornado WarningSJTSchleicher, Sutton65 min
Apr 7, 3:40 PM CDTSevere Thunderstorm WarningSJTColeman, Runnels35 min
Apr 7, 3:42 PM CDTSevere Thunderstorm WarningSJTTaylor63 min
Apr 7, 3:44 PM CDTSevere Thunderstorm WarningSJTCallahan61 min
Apr 7, 3:52 PM CDTSevere Thunderstorm WarningSJTShackelford53 min
Apr 7, 3:55 PM CDTSevere Thunderstorm WarningSJTJones65 min
Apr 7, 3:58 PM CDTSevere Thunderstorm WarningSJTCrockett62 min
Apr 7, 4:08 PM CDTFlash Flood WarningSJTThrockmorton2 hr
Apr 7, 4:09 PM CDTSevere Thunderstorm WarningSJTColeman, Runnels66 min
Apr 7, 4:22 PM CDTSevere Thunderstorm WarningSJTFisher53 min
Apr 7, 4:24 PM CDTTornado WarningSJTMenard, Schleicher66 min
Apr 7, 4:27 PM CDTTornado WarningSJTThrockmorton48 min
Apr 7, 4:43 PM CDTSevere Thunderstorm WarningSJTConcho, McCulloch62 min
Apr 7, 5:04 PM CDTSevere Thunderstorm WarningSJTBrown56 min
Apr 7, 5:25 PM CDTTornado WarningSJTMcCulloch, Mason, Menard65 min

Nearby

Tornado Warnings in Texas, 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.