Alert archive / Texas / Tornado Warnings in 1989

Tornado Warning 2, NWS Austin/San Antonio, TX

April 28, 1989Burnet County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Apr 28, 1989, 4:06 PM CDT for Burnet County, Williamson County, Texas. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Apr 28, 1989, 4:06 PM CDT (21:06 UTC)
Expired
Apr 28, 1989, 5:00 PM CDT
In force
54 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Burnet County, TX, Williamson County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 12:00Z, 9.1 hours before the alert went out and 168 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 1989-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1490 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 12:00Z on 1989-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
1490 J/kg
Mixed-layer CIN
-194 J/kg
Mixed-layer LCL
1431 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
21 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.

000 
TTAA00 KAUS 282107
TORAUS
TXC053-491-282200-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
406 PM CDT FRI APR 28 1989
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL TEXAS
          ...EAST CENTRAL BURNET...WESTERN WILLIAMSON
 
AUSTIN RADAR INDICATES A POSSIBLE TORNADO SOUTH OF BERTRAM MOVING
NORTHEAST.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 12:51 AM CDTSevere Thunderstorm WarningEWXWebb69 min
Apr 28, 2:13 PM CDTSevere Thunderstorm WarningEWXComal62 min
Apr 28, 3:37 PM CDTSevere Thunderstorm WarningEWXGuadalupe53 min
Apr 28, 3:38 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson52 min

Nearby

Tornado Warnings in Texas, 1989Every tornado warning in 1989Tornadoes in 1989

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.