Alert archive / Texas / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 155, NWS Austin/San Antonio, TX

July 18, 1992Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jul 18, 1992, 8:48 PM CDT for Travis County, Williamson County, Texas. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1992, 8:48 PM CDT (01:48 UTC)
Expired
Jul 18, 1992, 9:45 PM CDT
In force
57 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Travis County, TX, Williamson County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 1.8 hours before the alert went out and 196 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, Stephenville/Cla, TX at 00:00Z on 1992-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 408 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, Stephenville/Cla, TX at 00:00Z on 1992-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 283 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
408 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1327 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
283 m²/s²
0-3 km storm-relative helicity
269 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 190148
SVRAUS
TXC453-491-190245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
848 PM CDT SAT JUL 18 1992
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...NORTHWESTERN TRAVIS COUNTY...WESTERN WILLIAMSON COUNTY
 
AUSTIN WEATHER SERVICE RADAR SHOWS A SEVERE THUNDERSTORM ABOUT 15
MILES NORTHWEST OF THE CITY OF AUSTIN NEAR LAKE TRAVIS MOVING TOWARDS
THE NOETHEAST AT 15 MPH. THIS SEVERE THUNDERSTORM WILL BE MOVING OVER
THE WESTER PORTIONS OF WILLIAMSON COUNTY.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND AROUND 60 MPH OR
HIGHER...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
SLOW DOWN OR MOVE COMPLETELY OFF ROADWAYS IN HEAVY RAINS.
BRIEF LOCALIZED FLOODING ACCOMPANY MANY SEVERE THUNDERSTORMS.
LISTEN FOR LOCATION AND MOVEMENT OF STORMS...YOU MAY BE DOWN-

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, Jul 18, 6:05 PM CDT, 2 hours 43 minutes before
TXZ030-034>037-190000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
6 PM CDT SAT JUL 18 1992

...THUNDERSTORMS BECOMING MORE NUMEROUS ACROSS SOUTH CENTRAL TEXAS...

AT 555 PM...SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS MUCH OF
CENTRAL AND SOUTHCENTRAL TEXAS...THEN WERE LESS NUMEROUS TO THE WEST
AND SOUTHWEST OF AUSTIN. STRONG THUNDERSTORMS WERE NOTED NORTH OF LULING
OVER TOWARDS LAGRANGE...THESE COULD EFFECT PARTS OF TRAVIS AND
BASTROP COUNTY NEAR 7 PM WITH BRIEF HEAVY RAINS AND GUSTY WINDS...OTHER
STRONG THUNDERRSTORMS WERE LOCATED NEAR BURNET...NORTH OF LAMPASAS
AND NEAR COLLEGE STATION. MOVEMENT WAS TOWARDS THE NORTH AT 10 TO 15 MPH.

THE STRONGER THUNDERSTORMS MAYf PRODUCE BRIEF HEAVY RAINFALL AND
DANGEROUS LIGHTNING.  PERSONS ON AREA LAKES SHOULD PREPARE TO MOVE
ASHORE IF THUNDERSTORMS APPROACH...AND MOTORISTS SHOULD SLOW DOWN
IF POOR VISIBILITIES ARE ENCOUNTERED.
PJL
Special weather statement, Jul 18, 6:06 PM CDT, 2 hours 42 minutes before
TXZ030-034>037-190000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
6 PM CDT SAT JUL 18 1992

...THUNDERSTORMS BECOMING MORE NUMEROUS ACROSS SOUTH CENTRAL TEXAS...

AT 555 PM...SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS MUCH OF
CENTRAL AND SOUTHCENTRAL TEXAS...THEY WERE LESS NUMEROUS TO THE WEST
AND SOUTHWEST OF AUSTIN. STRONG THUNDERSTORMS WERE NOTED NORTH OF LULING
OVER TOWARDS LAGRANGE...THESE COULD EFFECT PARTS OF TRAVIS AND
BASTROP COUNTY NEAR 7 PM WITH BRIEF HEAVY RAINS AND GUSTY WINDS...OTHER
STRONG THUNDERRSTORMS WERE LOCATED NEAR BURNET...NORTH OF LAMPASAS
AND NEAR COLLEGE STATION. MOVEMENT WAS TOWARDS THE NORTH AT 10 TO 15 MPH.

THE STRONGER THUNDERSTORMSh MAY PRODUCE BRIEF HEAVY RAINFALL AND
DANGEROUS LIGHTNING.  PERSONS ON AREA LAKES SHOULD PREPARE TO MOVE
ASHORE IF THUNDERSTORMS APPROACH...AND MOTORISTS SHOULD SLOW DOWN
IF POOR VISIBILITIES ARE ENCOUNTERED.
PJL
Special weather statement, Jul 18, 8:08 PM CDT, 40 minutes before
TXZ038-039-190300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
800 PM CDT SAT JUL 18 1992

AT 755 PM CDT...HONDO RADAR REPORTED A THUNDERSTORM NEAR THE FRIO-
MEDINA-ZAVALA-UVALDE COUNTY LINE.  MOVEMENT WAS TOWARD THE NORTH AT
15 MPH.

THIS STORM LIKELY CONTAINS LOCALLY HEAVY RAIN AND FREQUENT LIGHTNING.
DUE TO ITS INTENSITY...GUSTY SURFACE WINDS AND HAIL ALSO MAY ACCOMPANY
THIS STORM FOR ANOTHER HOUR OR TWO.

SCATTERED THUNDERSTORMS ARE FORECAST TO PREVAIL THE REST OF THE EVENING
THROUGHOUT MUCH OF SOUTH CENTRAL TEXAS...THEN BEGIN TO DISSIPATE BY
MORNING.

HOWEVER...SOME OF THE STORMS COULD CAUSE ADVERSE WEATHER CONDITIONS FOR
A BRIEF TIME...SO RESIDENTS SHOULD REMvAIN ALERT AND LISTEN FOR LATER
BULLETINS AS CONDITIONS WARRANT.
Special weather statement, Jul 18, 8:18 PM CDT, 30 minutes before
TXZ030-034>037-190300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
815 PM CDT SAT JUL 18 1992

...STRONG THUNDERSTORMS NORTHWEST OF AUSTIN...

AT 810 PM...SHOWERS AND THUNDERSTORMS WERE SCATTERED ACROSS A LARGE AREA
OF CENTRAL AND SOUTH CENTRAL TEXAS.
STRONG THUNDERSTORMS WERE LOCATED FROM 20 MILES NORTHWEST OF AUSTIN WEST
OF LAKE TRAVIS TO NEAR LIBERTY HILL. OTHER STRONG THUNDERSTORMS WERE
LOCATED NORTH OF JARRELL AND BRIGGS AND ALSO NORTH OF BLANCO AND WEST OF
ROUND MOUNTAIN AND TO THE SOUTHWEST OF SAN ANTONIO. THESE STRONG
THUNDERSTORMS LIKELY CONTAIN LOCALLY HEAVY RAIN AND DANGEROUS LIGHTNING
ALONG WITH GUSTY WINDS. MOVEMENT WAS TOWARDS THE NORTHEAST AT 15 MPH.

 PERS ONS ON AREA LAKES SHOULD PREPARE TO MOVE
ASHORE IF THUNDERSTORMS APPROACH...AND MOTORISTS SHOULD SLOW DOWN
IF POOR VISIBILITIES ARE ENCOUNTERED.
PJL
Special weather statement, Jul 18, 8:20 PM CDT, 28 minutes before
TXZ038-039-190300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
815 PM CDT SAT JUL 18 1992

AT 815 PM CDT...HONDO RADAR REPORTED THUNDERSTORMS IN SOUTHERN UVALDE
AND SOUTHERN MEDINA COUNTIES.  MOVEMENT WAS TOWARD THE NORTH AT 15 MPH.

THESE STORMS LIKELY CONTAIN LOCALLY HEAVY RAIN AND FREQUENT LIGHTNING.
DUE TO THEIR INTENSITY...GUSTY SURFACE WINDS AND HAIL ALSO MAY ACCOMPANY
THESE STORMS FOR ANOTHER HOUR OR TWO.

PERSONS IN EASTERN UVALDE AND WESTERN MEDINA COUNTIES SHOULD BE ALERT
AND WATCH FOR THE APPROACH OF THESE STORMS.  RESIDENTS IN AND AROUND
HONDO...D'HANIS AND SABINAL WILL BE MOST AFFECTED.  IF THE STORMS HOLD
TOGETHER INTO THE EVENING...THEY MAY MOVE INTO BANDERA AND REAL COUNTIES
IN A FEW HOURS.

ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT...SO PLEASE
STAY TUNED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 4:00 AM CDTFlash Flood WarningEWXVal Verde6 hr
Jul 19, 10:10 AM CDTFlash Flood WarningEWXVal Verde6 hr
Jul 19, 4:10 PM CDTFlash Flood WarningEWXCalhoun3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 1992Every severe thunderstorm warning in 1992

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.