Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 13, NWS Amarillo, TX

April 13, 2002Potter County, Randall County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 13, 2002, 2:36 AM CDT for Potter County, Randall County, Texas. It was in force for 54 min. 10 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 13, 2002, 2:36 AM CDT (07:36 UTC)
Expired
Apr 13, 2002, 3:30 AM CDT
In force
54 min
Issued by
NWS Amarillo, TX
Area
Counties, with a storm outline in the text

Counties Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 23 km from the middle of the area, began a volume at 07:36 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

TimeReportWhereRemark
Apr 13, 2:43 AM CDTHail 0.88Bushland, TX
Apr 13, 2:44 AM CDTHail 1Bushland, TX
Apr 13, 2:47 AM CDTHail 1.75Bushland, TX
Apr 13, 2:56 AM CDTHail 1Amarillo, TX
Apr 13, 3:01 AM CDTHail 1.75Amarillo, TX
Apr 13, 3:02 AM CDTHail 1.75Amarillo, TX
Apr 13, 3:06 AM CDTHail 2Amarillo, TX
Apr 13, 3:16 AM CDTHail 1Amarillo, TX
Apr 13, 3:17 AM CDTHail 1.75Amarillo, TX
Apr 13, 3:40 AM CDTHail 0.88Amarillo, TX

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 12, 11:30 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 7.6 hours before the alert went out and 24 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, Amarillo Airport, TX at 00:00Z on 2002-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 880 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, Amarillo Airport, TX at 00:00Z on 2002-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.19395878Sfc1 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
880 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1630 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
-51 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 
WUUS54 KAMA 130736
SVRAMA
TXC375-381-130830-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
234 AM CDT SAT APR 13 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN POTTER COUNTY IN THE TEXAS PANHANDLE
  NORTHERN RANDALL COUNTY IN THE TEXAS PANHANDLE

* UNTIL 330 AM CDT

* AT 234 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES NORTHWEST OF BUSHLAND...OR ABOUT 15
  MILES WEST OF AMARILLO...MOVING EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  AMARILLO AND BUSHLAND

LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH
THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER.

A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS.

LAT...LON 3537 10214 3514 10214 3509 10171 3530 10167

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 10:38 PM CDTSevere Thunderstorm WarningAMAHartley52 min
Apr 12, 11:45 PM CDTSevere Thunderstorm WarningAMAOldham60 min
Apr 13, 12:01 AM CDTSevere Thunderstorm WarningAMAHartley29 min
Apr 13, 12:44 AM CDTSevere Thunderstorm WarningAMAPotter46 min
Apr 13, 1:21 AM CDTSevere Thunderstorm WarningAMAOldham54 min
Apr 13, 2:04 AM CDTTornado WarningAMAOldham41 min
Apr 13, 3:17 AM CDTTornado WarningAMAPotter, Randall28 min
Apr 13, 3:41 AM CDTSevere Thunderstorm WarningAMAArmstrong, Potter, Randall34 min
Apr 13, 3:49 AM CDTSevere Thunderstorm WarningAMAOldham26 min
Apr 13, 4:17 AM CDTSevere Thunderstorm WarningAMAArmstrong, Randall58 min
Apr 13, 5:06 AM CDTSevere Thunderstorm WarningAMADeaf Smith44 min

Nearby

Severe Thunderstorm Warnings in Texas, 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; radar from the NEXRAD Level II archive.