Alert archive / Texas / Tornado Warnings in 1992

Tornado Warning 6, NWS Austin/San Antonio, TX

May 11, 1992Williamson County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at May 11, 1992, 9:42 PM CDT for Williamson County, Texas. It was in force for 33 min. 1 report 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 11, 1992, 9:42 PM CDT (02:42 UTC)
Expired: May 11, 1992, 10:15 PM CDT
In force: 33 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Williamson County, TX

What was reported inside it

Time	Report	Where	Remark
May 11, 9:50 PM CDT	Hail 1.75	Williamson, 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 00:00Z, 2.7 hours before the alert went out and 181 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 768 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 2395 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 202 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 
TTAA00 KAUS 120243
TORAUS
TXC491-120315-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
942 PM CDT MON MAY 11 1992
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...WILLIAMSON COUNTY
 
AT 937 PM RADAR INDICATED A POSSIBLE TORNADO HALF WAY BETWEEN
GEORGETOWN AND FLORENCE ON HIGHWAY 195 JUST WEST OF INTERSTATE 35.
PERSON JUST NORTH OF GEORGETOWN NEAR THE TOWNS OF WEIR AND WALBURG
ARE IN THE PATH OF THIS STORM.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 8:51 PM CDT	Severe Thunderstorm Warning	EWX	Williamson	54 min
May 12, 4:22 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	53 min
May 12, 5:14 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	61 min
May 12, 5:56 PM CDT	Severe Thunderstorm Warning	EWX	Hays	49 min
May 12, 6:50 PM CDT	Severe Thunderstorm Warning	EWX	Hays	55 min

Nearby

Tornado Warnings in Texas, 1992 Every tornado warning in 1992 Tornadoes 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.