Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 14, NWS Austin/San Antonio, TX

January 31, 1998Real County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jan 31, 1998, 6:20 AM CST for Real County, Uvalde County, Texas. It was in force for 55 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
Jan 31, 1998, 6:20 AM CST (12:20 UTC)
Expired
Jan 31, 1998, 7:15 AM CST
In force
55 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Real County, TX, Uvalde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 0.3 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 12:00Z on 1998-01-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 425 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 1998-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 square meters per square second.1939587897117136Sfc1 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
425 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
509 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 311218 RRA
SVRSAT
TXC385-463-311315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
620 AM CST SAT JAN 31 1998
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  715 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...EASTERN REAL COUNTY...NORTHERN UVALDE COUNTY
 
AT 615 AM CST DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN NORTHERN
UVALDE COUNTY NEAR CONCAN MOVING TO THE NORTHEAST AT 15 MPH.
 
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY
OF LARGE HAIL AND DAMAGING WINDS.  FREQUENT LIGHTNING AND LOCALLY
HEAVY RAIN CAN AHLSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL
STREAMS...LOW AREAS...AND LOW WATER CROSSINGS.

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.

In the hours before

Special weather statement, Jan 31, 5:13 AM CST, 1 hour 7 minutes before
TXZ171>173-183>194-202>209-217>225-228-010000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
513 AM CST SAT JAN 31 1998

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY FOR THE HILL
COUNTRY AND SOUTH CENTRAL TEXAS.

AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS NORTH TEXAS TODAY.  THIS
SYSTEM WILL INTERACT WITH THE UNSTABLE ATMOSPHERE IN PLACE AND
TRIGGER SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS.  SOME OF THE
STORMS MAY BECOME SEVERE WITH THE PRIMARY THREAT BEING LARGE HAIL.

LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE TODAY.  RAINFALL AMOUNTS WILL
AVERAGE AROUND 1/2 INCH WITH ISOLATED TOTALS OF 3 TO 4 INCHES
POSSIBLE WITH THE STRONGER STORMS.

NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE:
FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF
FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT
FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW
FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU
FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE WORLD WIDE WEB AT:
HTTP://WWW.SRH.NOAA.GOV/EWX

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 31, 5:02 AM CSTFlash Flood WarningEWXBandera3 hr
Jan 31, 6:08 AM CSTSevere Thunderstorm WarningEWXEdwards67 min
Jan 31, 7:26 AM CSTFlash Flood WarningEWXUvalde4 hr
Jan 31, 10:33 AM CSTFlash Flood WarningEWXBexar117 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.