Alert archive / Texas / Tornado Warnings in 1987

Tornado Warning 16, NWS Austin/San Antonio, TX

September 28, 1987Uvalde County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Sep 28, 1987, 5:43 PM CDT for Uvalde County, Texas. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Sep 28, 1987, 5:43 PM CDT (22:43 UTC)
Expired
Sep 28, 1987, 6:30 PM CDT
In force
47 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Uvalde 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

Del Rio, TX (KDRT), launched 12:00Z, 10.7 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 1987-09-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1186 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 1987-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
1186 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
714 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 282243
TORSAT
TXC463-282330-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
543 PM CDT MON SEP 28 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  630 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...UVALDE
 
NATIONAL WEATHER SERVICE RADAR INDICATES A POSSIBLE TORNADO OVER
UVALDE COUNTY...ABOUT 15 MILES WEST OF THE CITY OF UVALDE.  THE
STORM IS MOVING SOUTH AT 20 MILES AN HOUR.
 
IF YOU ARE IN THE PATH OF THIS STORM...GO TO A BASEMENT SHELTER OR A
CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUILDING.
ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.
 
LARGE HAIL...FREQUENT LIGHTNING AND VERY HEAVY RAIN WILL LIKELY
ACCOMPANY THIS STORM.
 
YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR
SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR )NOAA WEATHER RADIO STATION
LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

What forecasters said that day

The local office's own words before this tornado 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, Sep 28, 4:36 PM CDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
435 PM CDT MON SEP 28 1987

...SEVERE THUNDERSTORM WARNING FOR KERR AND NORTHEASTERN EDWARDS
   COUNTY HAS EXPIRED...

THE SEVERE THUNDERSTORM WARNING FOR KERR AND NORTHEASTERN EDWARDS
COUNTY HAS EXPIRED.  ALTHOUGH A STRONG THUNDERSTORM CONTINUES IN
NORTHERN KERR COUNTY...THE THUNDERSTORM HAS DECREASED IN INTENSITY
DURING THE LAST HOUR...AND NO REPORTS OF SEVERE WEATHER HAVE BEEN
RECEIVED.

A LINE OF SHOWERS AND HEAVY THUNDERSTORMS CONTINUE FROM ROCKSPRINGS
TO MOUNTAIN HOME AHEAD OF A COLD FRONT IN NORTH CENTRAL TEXAS.  THE
LINE OF THUNDERSTORMS ARE MOVING TO THE SOUTH AT 15 MPH. BRIEF HEAVY
RAINS...STRONG GUSTY WINDS AND POSSIBLE SMALL HAIL COULD OCCUR WITH
THESE THUNDERSTORMS AS THEY MOVE SOUTH.

STAY TUNED TO YOUR LOCAL RADIO...TV...OR NOAA WEATHER RADIO STATION
FOR ADDITIONAL STATEMENTS.
Special weather statement, Sep 28, 4:46 PM CDT, 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
445 PM CDT MON 28 SEP 1987

...STILL NO THUNDERSTORMS CLOSE TO THE AUSTIN AREA...

AT 440 PM...RADAR SHOWED A MODERATE THUNDERSHOWER WEST OF COLLEGE
STATION AND ANOTHER ABOUT 20 MILES SOUTHEAST OF JUNCTION.
WIDELY SCATTERED MOSTLY LIGHT SHOWERS DOTTED THE COASTAL SECTIONS.

ALL SHOWERS WERE MOVING TOWARDS THE SOUTH AND SOUTHWEST AT 15 MPH.

THE FLASH FLOOD WATCH WHICH HAS BEEN PLACED IN EFFECT FOR TONIGHT
FOR PARTS OF SOUTHEAST AND COASTAL TEXAS...DOES INCLUDE BOTH
MILAM AND BURLESON COUNTIES...BOTH IMMEDIATEDLY WEST AND NORTHWEST
OF COLLEGE STATION.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 3:10 PM CDTSevere Thunderstorm WarningEWXEdwards, Kerr65 min

Nearby

Tornado Warnings in Texas, 1987Every tornado warning in 1987Tornadoes in 1987

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.