Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 201, NWS Austin/San Antonio, TX

August 29, 1998Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Aug 29, 1998, 5:56 PM CDT for Val Verde County, Texas. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 29, 1998, 5:56 PM CDT (22:56 UTC)
Expired
Aug 29, 1998, 7:30 PM CDT
In force
94 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 10.9 hours before the alert went out and 66 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 12:00Z on 1998-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 920 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 12:00Z on 1998-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
920 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1272 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
94 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.

499 
WUUS1 KSAT 292258 RRA
SVRSAT
TXC465-290030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
556 PM CDT SAT AUG 29 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 730 PM CDT


* AT 550 PM... A SEVERE THUNDERSTORM WAS INDICATED CROSSING FARM
  ROAD 1024...10 MILES NORTH OF COMSTOCK... BY NATIONAL WEATHER
  SERVICE RADAR... MOVING WEST AT 15 MPH.

* SOME CITIES AND LOCATIONS IN THE PATH OF THIS STORM ARE...
  LANGTRY..WILL ARRIVE AT 620 PM

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 4:47 PM CDTSevere Thunderstorm WarningEWXBurnet43 min
Aug 29, 5:01 PM CDTFlash Flood WarningEWXVal Verde3 hr
Aug 29, 6:14 PM CDTSevere Thunderstorm WarningEWXWilliamson61 min
Aug 29, 6:28 PM CDTSevere Thunderstorm WarningEWXTravis62 min
Aug 29, 6:31 PM CDTSevere Thunderstorm WarningEWXTravis59 min
Aug 29, 6:39 PM CDTTornado WarningEWXTravis61 min
Aug 29, 6:46 PM CDTTornado WarningEWXTravis59 min

Nearby

Severe Thunderstorm Warnings in Texas, 1998Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.