Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 30, NWS Amarillo, TX

April 15, 2000Wheeler County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 15, 2000, 3:55 PM CDT for Wheeler County, Texas. It was in force for 65 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 15, 2000, 3:55 PM CDT (20:55 UTC)
Expired
Apr 15, 2000, 5:00 PM CDT
In force
65 min
Issued by
NWS Amarillo, TX
Area
Whole counties

County Wheeler County, TX

The radar

The Amarillo radar (KAMA), 132 km from the middle of the area, began a volume at 20:59 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 15, 4:05 PM CDTHail 1.75Wheeler, 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.9 hours before the alert went out and 131 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 2000-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 110 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 2000-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
110 J/kg
Mixed-layer CIN
-475 J/kg
Mixed-layer LCL
1871 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
83 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.

486 
WUUS54 KAMA 152057
SVRAMA
TXC483-152200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
355 PM CDT SAT APR 15 2000

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WHEELER COUNTY IN THE TEXAS PANHANDLE

* UNTIL 500 PM CDT

* AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF WHEELER...WITH A SECOND SEVERE
  THUDERSTORM ABOUT 4 MILES EAST OF BRISCOE. THESE STORMS ARE MOVING 
  EAST-NORTHEAST AT ABOUT 20 MPH.

* SOME LOCATIONS AFFECTED BY THE STORMS INCLUDE...
  ALLISON...BRISCOE...NEW MOBEETIE...TWITTY AND WHEELER

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

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 Apr 15, 3:15 PM CDT, 40 minutes earlier.

Area forecast discussion, Apr 15, 3:15 PM CDT, 40 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
315 PM CDT SAT APR 15 2000

ATTM...A COLD FRONT...ON A CANADIAN...TULIA...HEREFORD LINE CONTINUES
TO MOVE SLOWLY SOUTHEAST. TEMPERATURES BEHIND THE FRONT STEADILY
FALL AND REMAIN IN THE 30S IN THE OK PANHANDLE.  IN ADVANCE OF THE
FRONT...TEMPS HAVE REACHED THE LOWER 80S. DRYLINE EXTENDS FROM NEAR
CLARENDON SOUTHWARD INTO THE SOPLNS. MODELS PERFORMED POORLY WITH
THE SOUTHWARD MOVEMENT OF THIS FEATURE AND FEEL GUIDANCE TEMPS WAY
OVERDONE FOR AFTN HIGHS FOR SUNDAY.

MAIN THREAT FOR CONVECTION REMAINS IN THE SE CORNER OF FA. SHALLOW
DOME OF COOLER AIR SHOULD BE REINFORCED OVERNIGHT BEHING SHORTWAVE
AS IT MOVES ACROSS JUST SOUTH OF THE AREA. LOW CLOUDS MAY DEVELOP
ESPECIALLY ACROSS NORTH AND NE SECTIONS. SHOWERS AND TSTMS HAVE
DEVELOPED IN NE NM. SOME OF THIS PCPN MAY SPREAD ACROSS NRN ZONES
THIS EVENING AND TONIGHT. PCPN LEAST LIKELY IN SW AREAS.

AFTER TONIGHT...UPPER LOW MOVES EAST...UPPER RIDGE BUILDS OVER THE
AREA...AND A RAPID WARM UP IN STORE THROUGH TUESDAY.  WILL LEAVE
SLGT CHC POPS IN ERN ZONES WED AS NEXT SYSTEM MOVES NORTH OF THE
AREA. APPEARS MOST OF THE FA WILL BE DRY SLOTTED...BUT ENOUGH
MOISTURE MAY BE AVAILABLE FOR ISOLATED STORMS EAST.

DHT 33/63 38/82 50  300
AMA 38/68 40/85 52  200

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

SD

In the hours before

Special weather statement, Apr 15, 12:55 PM CDT, 3 hours before
OKZ001>003-TXZ001>020-152300-

TEXAS/OKLAHOMA PANHANDLES THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
1255 PM CDT SAT APR 15 2000

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE
EXTREME EASTERN TEXAS PANHANDLE THIS AFTERNOON AND EVENING...

THE SLIGHT RISK AREA IS GENERALLY EAST OF A LINE FROM FOLLETT TO
LIPSCOMB TO MIAMI TO CLARENDON.  A STRONG CANADIAN COLD FRONT WILL
CONTINUE TO MOVE SOUTH AND BY EARLY THIS EVENING IT WILL BE LOCATED
ACROSS SOUTHWEST OKLAHOMA AND THE NORTHERN SOUTH PLAINS.  AN UPPER
LEVEL STORM SYSTEM WILL APPROACH THE PANHANDLES FROM THE WEST THIS
AFTERNOON AND EVENING. LOW LEVEL MOISTURE ACROSS THE EASTERN TEXAS
PANHANDLE WILL BE FOCUSED ALONG THE COLD FRONT AS IT MOVES SOUTH.
THIS MOISTURE ALONG WITH THE LIFT FROM THE FRONT AND THE UPPER
LEVEL STORM SYSTEM WILL COMBINE TO SET THE STAGE FOR THUNDERSTORMS...
SOME OF WHICH MAY BECOME SEVERE.

THE MAIN SEVERE WEATHER THREAT WILL BE LARGE HAIL AND DAMAGING
DOWNBURST WINDS.  HOWEVER...AN ISOLATED TORNADO IS NOT OUT OF THE
QUESTION AS THE WINDS ALOFT INCREASE THIS AFTERNOON.

THE THREAT OF SEVERE WEATHER WILL QUICKLY DIMINISH AFTER SUNSET AS
THE COLD FRONT AND UPPER LEVEL STORM SYSTEM MOVE EAST OF THE AREA.

EMERGENCY MANAGEMENT OFFICIALS AND SPOTTER GROUPS ACROSS THE
EXTREME EASTERN TEXAS PANHANDLE SHOULD REMAIN ALERT...AND BE
READY FOR POSSIBLE ACTIVATION THIS AFTERNOON OR EVENING.

GOEHRING

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 2:59 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler61 min
Apr 15, 4:25 PM CDTSevere Thunderstorm WarningAMACollingsworth50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000

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.