Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 108, NWS Austin/San Antonio, TX

April 30, 2000Uvalde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 30, 2000, 9:24 PM CDT for Uvalde County, Texas. It was in force for 51 min. 2 reports 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 30, 2000, 9:24 PM CDT (02:24 UTC)
Expired
Apr 30, 2000, 10:15 PM CDT
In force
51 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Uvalde County, TX

What was reported inside it

TimeReportWhereRemark
Apr 30, 9:27 PM CDTHail 1Knippa, TX
Apr 30, 10:15 PM CDTHail 1Concan, 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

Del Rio, TX (KDRT), launched 00:00Z, 2.4 hours before the alert went out and 104 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, Del Rio, TX at 00:00Z on 2000-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2709 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, Del Rio, TX at 00:00Z on 2000-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
2709 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
2069 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KEWX 010226
SVRSAT
TXC463-010315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
924 PM CDT SUN APR 30 2000

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  UVALDE COUNTY

* UNTIL 1015 PM CDT

* AT 924 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTHWTEST OF KNIPPA...OR ABOUT 10 MILES
  NORTH OF UVALDE...MOVING NORTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  UTOPIA AROUND 1010 PM CDT

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 Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 8:35 PM CDT, 49 minutes earlier.

Area forecast discussion, Apr 30, 8:35 PM CDT, 49 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
835 PM CDT SUN APR 30 2000

NO CHANGES TO ONGOING FORECAST.  THE DRY LINE REMAINS EAST OF HERE
BUT HORIZONAL CONVERGENCE IN THE LOW LEVEL JET HAS SQUEEZED OUT A
COUPLE OF SHOWERS FROM ZAVALA COUNTY TO KERR COUNTY. THE ATMOSPHERE
REMAINS VERY UNSTABLE, AND THE APPROACHING STORM SYSTEM WILL CAUSE
MORE SHOWERS AND THUNDERSTORMS TO DEVELOP DURING THE NIGHT.
SATELLITE DERIVED CAPES ARE CURRENTLY IN THE 3000 TO 5000 RANGE WITH
LOW CONVECTIVE INHIBITION.

.EWX...NONE.

06/08/WR

In the hours before

Special weather statement, Apr 30, 8:55 PM CDT, 29 minutes before
TXZ171>173-183>194-202>209-217>225-228-010400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
855 PM CDT SUN APR 30 2000

AN INCREASING CHANCE OF RAIN FROM SHOWERS AND THUNDERSTORMS
IS EXPECTED TONIGHT THROUGH MONDAY AND MONDAY NIGHT OVER
CENTRAL AND SOUTH CENTRAL TEXAS.  AN AREA OF LOW PRESSURE ALOFT OVER
NORTHWEST TEXAS IS EXPECTED TO MOVE SLOWLY EAST THROUGH MONDAY
NIGHT...SUPPORTING A BETTER CHANCE OF RAIN FOR THE AREA.

A COOL FRONT FROM PARTS OF NORTH TEXAS TO WEST TEXAS WILL
ALSO MOVE SOUTHEAST OVER CENTRAL AND NORTHERN PARTS OF
SOUTH CENTRAL TEXAS TONIGHT AND MONDAY MORNING...AND OVER
THE REST OF SOUTH CENTRAL TEXAS MONDAY THROUGH MONDAY
NIGHT.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER
THE AREA TONIGHT AND MONDAY...WITH SOME POSSIBLY SEVERE.
THIS WOULD MAKE FOR A CHANCE OF NOT ONLY RAIN...ALSO
HAIL AND STRONG WINDS ARE POSSIBLE.  ISOLATED TORNADOES
COULD ALSO FORM IN THE STRONGER THUNDERSTORMS.

EMERGENCY MANAGEMENT AND STORM SPOTTER GROUPS ARE ADVISED
TO MONITOR THE LATEST WEATHER DEVELOPMENTS TODAY AND THIS EVENING.
SPOTTER ACTIVATION MAY BE REQUIRED.

FOR INFORMATION ON WEATHER THREATS IN SURRyOUNDING AREAS...REFER TO
OUTLOOKS FROM OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH...
HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, Apr 30, 9:20 PM CDT, 4 minutes before
TXZ171>173-183>194-202>209-217>225-228-010400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
920 PM CDT SUN APR 30 2000

...SHOWERS AND THUNDERSTORMS COMING TONIGHT AND MONDAY...

AN INCREASING CHANCE OF RAIN FROM SHOWERS AND THUNDERSTORMS
IS EXPECTED TONIGHT THROUGH MONDAY AND MONDAY NIGHT OVER
CENTRAL AND SOUTH CENTRAL TEXAS.  AN AREA OF LOW PRESSURE ALOFT OVER
NORTHWEST TEXAS IS EXPECTED TO MOVE SLOWLY EAST THROUGH MONDAY
NIGHT...SUPPORTING A BETTER CHANCE OF RAIN FOR THE AREA.

A COOL FRONT FROM PARTS OF NORTH TEXAS TO WEST TEXAS WILL
ALSO MOVE SOUTHEAST OVER CENTRAL AND NORTHERN PARTS OF
SOUTH CENTRAL TEXAS TONIGHT AND MONDAY MORNING...AND OVER
THE REST OF SOUTH CENTRAL TEXAS MONDAY THROUGH MONDAY
NIGHT.

SHOWERS AND THUNDERSTORMS TO THE NORTH AND WEST ARE EXPECTED TO
DEVELOP OVER THE AREA IN THE NEXT FEW HOURS AND THE REST OF
TONIGHT...AND ALSO MONDAY...WITH SOME POSSIBLY SEVERE.
THIS WOULD MAKE FOR A CHANCE OF NOT ONLY RAIN...ALSO HAIL AND STRONG
WINDS ARE POSSIBLE.  ISOLATED TORNADOES COULD ALSO FORM IN THE
STRONGER THUNDERSTORMS.

EMERGENCY MANAGEMENT AND STORM SPOTTER GROUPS ARE ADVISED
TO MONITOR THE LATEST WEATHER DEVELOPMENTS TODAY AND THIS EVENING.
SPOTTER ACTIVATION MAY BE REQUIRED.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 9:58 PM CDTSevere Thunderstorm WarningEWXBandera62 min
Apr 30, 10:11 PM CDTSevere Thunderstorm WarningEWXFrio, Medina, Uvalde, Zavala64 min
Apr 30, 11:38 PM CDTSevere Thunderstorm WarningEWXVal Verde62 min
May 1, 12:30 AM CDTSevere Thunderstorm WarningEWXVal Verde60 min
May 1, 1:40 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real110 min
May 1, 4:29 AM CDTSevere Thunderstorm WarningEWXBexar, Guadalupe61 min
May 1, 6:41 PM CDTSevere Thunderstorm WarningEWXGillespie34 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.