Alert archive / Texas / Tornado Warnings in 1987

Tornado Warning 7, NWS Austin/San Antonio, TX

May 19, 1987Wilson County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at May 19, 1987, 6:39 PM CDT for Wilson County, Texas. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
May 19, 1987, 6:39 PM CDT (23:39 UTC)
Expired
May 19, 1987, 7:45 PM CDT
In force
66 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Wilson 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

Victoria Regiona, TX (KVCT), launched 12:00Z, 11.7 hours before the alert went out and 121 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, Victoria Regiona, TX at 12:00Z on 1987-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1597 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, Victoria Regiona, TX at 12:00Z on 1987-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 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
1597 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
44 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 KSAT 192345 COR
TORSAT
TXC493-200045-

BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTION
NATIONAL WEATHER SERVICE SAN ANTONIO TX
639 PM CDT TUE MAY 19 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  745 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...

IN SOUTH TEXAS
          ...WILSON

REPORTS OF A POSSIBLE TWISTER HAVE COME IN AROUND THE ADKINS AREA IN
WESTERN WILSON COUNTY. THESE STORMS ARE MOVING TO THE NORTH
NORTHEAST AT 30 MPH. WITH THIS MOVEMENT THE THE CITY OF LAVERNIA WILL
BE IN ITS PATH.

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.

THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.

LARGE HAIL...FREQUENT LIGHTNING AND VERY HEAVY RAIN WILL LIKELY
ACCOMPANY THIS STORM.

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 7:19 PM CDTSevere Thunderstorm WarningEWXMaverick56 min
May 18, 7:35 PM CDTSevere Thunderstorm WarningEWXVal Verde60 min
May 18, 9:13 PM CDTSevere Thunderstorm WarningEWXReal62 min
May 19, 10:58 AM CDTFlash Flood WarningEWXKendall2 hr
May 19, 3:15 PM CDTSevere Thunderstorm WarningEWXBexar60 min
May 19, 4:14 PM CDTSevere Thunderstorm WarningEWXBexar61 min
May 19, 4:23 PM CDTSevere Thunderstorm WarningEWXHays, Travis67 min
May 19, 5:03 PM CDTTornado WarningEWXGuadalupe57 min
May 19, 6:06 PM CDTSevere Thunderstorm WarningEWXBexar, Wilson54 min
May 19, 6:29 PM CDTSevere Thunderstorm WarningEWXTravis61 min
May 19, 6:59 PM CDTSevere Thunderstorm WarningEWXBexar61 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.