Alert archive / Texas / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 65, NWS Austin/San Antonio, TX

May 12, 1992Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 12, 1992, 5:14 PM CDT for Travis County, Williamson County, Texas. It was in force for 61 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
May 12, 1992, 5:14 PM CDT (22:14 UTC)
Expired
May 12, 1992, 6:15 PM CDT
In force
61 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Travis County, TX, Williamson County, TX

What was reported inside it

TimeReportWhereRemark
May 12, 5:32 PM CDTHail 1Travis, TX
May 12, 5:55 PM CDTHail 1Travis, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 12:00Z, 10.2 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 12:00Z on 1992-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1992-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 301 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
301 m²/s²
0-3 km storm-relative helicity
391 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 122216
SVRAUS
TXC453-491-122315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
514 PM CDT TUE MAY 12 1992
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...TRAVIS COUNTY...WILLIAMSON COUNTY
 
AT 513 PM...RADAR SHOWED SEVERE THUNDERSTORMS FROM 10 MILES SOUTH OF
GEORGETOWN TO WEST OF AUSTIN TO NEAR OAK HILL. THESE STORMS WERE
MOVING TO THE EAST AT 10 MILES AN HOUR.
 
THESE STORMS HAVE A HISTORY OF 1/2 INCH TO GOLFBALL SIZED HAIL.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDER1STORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, May 12, 3:54 PM CDT, 1 hour 20 minutes before
TXZ030-034-035-036-037-122200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
353 PM CDT TUE MAY 12 1992

...TORNADO WATCH IN EFFECT FOR MILLS...SAN SABA...LAMPASAS...
LLANO...BURNET...GILLESPIE...BLANCO...HAYS...WILLIAMSON...
TRAVIS...CALDWELL...MILAM...BASTROP...LEE...FAYETTE AND BURLESON
COUNTIES UNTIL 10 PM...

AT 348 PM...RADAR SHOWED WIDELY SCATTERED SHOWERS AND THUNDERSTORMS
OVER THE HILL COUNTRY.  THE STRONGER STORMS WERE LOCATED AT THE
WESTERN END OF LAKE TRAVIS...7 MILES WEST OF LIBERTY HILL...AND FROM
SAN SABA TO 5 MILES NORTHWEST OF PONTOTOC.  THE THUNDERSTORMS WERE
MOVING TO THE EAST AT 5 MILES AN HOUR.

THESE THUNDERSTORMS WILL LIKELY PRODUCE DANGEROUS LIGHTNING...SMALL
HAIL AND LOCALIZED FLOODING.

STAY TUNED TO NOAA WEATHER RADIO OR COMMERCIAL TV/RADIO FOR LATER
STATEMENTS OR POSSIBLE WARNINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 8:51 PM CDTSevere Thunderstorm WarningEWXWilliamson54 min
May 11, 9:42 PM CDTTornado WarningEWXWilliamson33 min
May 12, 4:22 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson53 min
May 12, 5:56 PM CDTSevere Thunderstorm WarningEWXHays49 min
May 12, 6:50 PM CDTSevere Thunderstorm WarningEWXHays55 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.