Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 121, NWS Amarillo, TX

May 30, 2001Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 30, 2001, 6:24 PM CDT for Deaf Smith County, Oldham County, Texas. It was in force for 51 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
May 30, 2001, 6:24 PM CDT (23:24 UTC)
Expired
May 30, 2001, 7:15 PM CDT
In force
51 min
Issued by
NWS Amarillo, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Deaf Smith County, TX, Oldham County, TX

What was reported inside it

TimeReportWhereRemark
May 30, 6:44 PM CDTHail 2.75Glenrio Station, TX
May 30, 6:49 PM CDTHail 2.75Adrian, 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
May 30, 3:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.4 hours before the alert went out and 123 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 12:00Z on 2001-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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 12:00Z on 2001-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -56 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
148 J/kg
Mixed-layer CIN
-411 J/kg
Mixed-layer LCL
2031 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-56 m²/s²
0-3 km storm-relative helicity
-33 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 302326
SVRAMA
TXC117-359-310015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
624 PM CDT WED MAY 30 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN DEAF SMITH COUNTY IN THE TEXAS PANHANDLE
  SOUTHWESTERN OLDHAM COUNTY IN THE TEXAS PANHANDLE

* UNTIL 715 PM CDT

* AT 624 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES NORTHWEST OF GLENRIO...OR ABOUT 38
  MILES WEST OF VEGA...MOVING SOUTHEAST AT 30 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  GLENRIO

LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH 
THIS STORM. VERY SMALL...BRIEF...BUT DANGEROUS TORNADOES ARE 
POSSIBLE WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER.

LAT...LON 3548 10313 3537 10330 3501 10297 3515 10275

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 3:20 PM CDT, 3 hours 4 minutes earlier.

Area forecast discussion, May 30, 3:20 PM CDT, 3 hours 4 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE AMARILLO TX
320 PM CDT WED MAY 30 2001

CONVECTION DEVELOPING OVER NORTHEAST NEW MEXICO THIS AFTERNOON WITH
NORTHWEST FLOW SHORTWAVE BACK OVER COLORADO.  HIGH PLAINS PROFILERS
SHOWS GOOD WESTERLY COMPONENT TO STEERING LEVEL WINDS SUGGEST A
DECENT PROBABILITY THESE STORMS WILL AT LEAST MOVE OVER WESTERN
ZONES AND PERHAPS CENTRAL ZONES AS WELL. SURFACE WINDS HAVE BACKED
AT KTCC AND KCVN AND ARE IN THE PROCESS OF BACKING AT KDHT
SUGGESTING SOME FAVORABLE VERTICAL PROFILES AS 55 KT MID LEVEL
SPEED MAX OVER THE CENTRAL ROCKIES APPROACHES THE PANHANDLES.
LOWER TO MID 50S DEW POINTS IN PLACE SO SUFFICIENT MSTR/INSTABILITY
FOR SOME SEVERE STORMS.

WILL HOLD ON TO SLIGHT CHANCE POPS FOR FRIDAY AS AIRMASS WILL REMAIN
WEAKLY CAPPED WHILE MOISTURE LEVELS REMAIN RATHER HIGH. EASTERN
ZONES WILL BE A FAVORED LOCATION...ESPECIALLY FRIDAY NIGHT.

NEXT FRONT PROGED TO ARRIVE ON SUNDAY NIGHT...WILL NEED TO
INTRODUCE POPS FOR THE SUNDAY AND MONDAY TIME FRAME WITH SLIGHTLY
COOLER TEMPS ON MONDAY.

.AMA...
TX...NONE.
OK...NONE.

SLATTERY

In the hours before

Special weather statement, May 30, 12:55 PM CDT, 5 hours 29 minutes before
OKZ001>003-TXZ001>020-310500-

TEXAS/OKLAHOMA PANHANDLES THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
1255 PM CDT WED MAY 30 2001

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT OVER
THE EXTREME SOUTHERN PORTIONS OF THE TEXAS PANHANDLE.

THIS AREA INCLUDES THOSE SOUTH OF A VEGA TO WELLINGTON LINE.

A STRONG UPPER LEVEL DISTURBANCE OVER WEST-CENTRAL COLORADO WILL
MOVE SOUTHEAST INTO THE TEXAS PANHANDLE TONIGHT. AT THE SURFACE...
A WEAK COLD FRONT WILL REMAIN OVER THE SOUTHERN TEXAS PANHANDLE.
THE ATMOSPHERE WILL REMAIN MOIST AND UNSTABLE OVER THE AREA
THROUGH THIS EVENING. THE COMBINATION OF THIS UPPER LEVEL
DISTURBANCE...A SURFACE COLD FRONT AND LOW LEVEL MOISTURE WILL
PRODUCE SCATTERED THUNDERSTORMS.

THE MAIN SEVERE WEATHER THREAT WILL BE DAMAGING WINDS AND LARGE
HAIL. HEAVY RAIN AND LOCALIZED FLOODING WILL ALSO BE A CONCERN.

SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL IN THE SLIGHT
RISK AREA SHOULD MONITOR WEATHER DEVELOPMENTS AND BE READY FOR
POSSIBLE ACTIVATION THIS AFTERNOON.

PLATT

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 7:07 PM CDTSevere Thunderstorm WarningAMASherman38 min
May 29, 7:10 PM CDTSevere Thunderstorm WarningAMAHutchinson65 min
May 29, 7:14 PM CDTTornado WarningAMACarson61 min
May 29, 7:45 PM CDTTornado WarningAMAGray60 min
May 29, 7:52 PM CDTSevere Thunderstorm WarningAMAHansford38 min
May 29, 8:10 PM CDTSevere Thunderstorm WarningAMARoberts50 min
May 29, 8:52 PM CDTSevere Thunderstorm WarningAMAWheeler38 min
May 29, 10:08 PM CDTSevere Thunderstorm WarningAMAGray, Roberts52 min
May 29, 11:44 PM CDTSevere Thunderstorm WarningAMACollingsworth46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001

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.