Alert archive / Texas / Tornado Warnings in 1990

Tornado Warning 2, NWS Austin/San Antonio, TX

February 1, 1990Atascosa County, McMullen County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Feb 1, 1990, 3:38 PM CST for Atascosa County, McMullen County, Texas. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Feb 1, 1990, 3:38 PM CST (21:38 UTC)
Expired
Feb 1, 1990, 4:37 PM CST
In force
59 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Atascosa County, TX, McMullen 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

Corpus Christi, TX (KCRP), launched 12:00Z, 9.6 hours before the alert went out and 155 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, Corpus Christi, TX at 12:00Z on 1990-02-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 303 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, Corpus Christi, TX at 12:00Z on 1990-02-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 218 square meters per square second.1939587897Sfc1 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
303 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
607 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
218 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 012139
TORSAT
TXC013-311-012245-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
338 PM CST THU FEB 1 1990
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  445 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...ATASCOSA...NORTHERN MCMULLEN
 
A SEVERE THUNDERSTORM THAT PRODUCED A TORNADO WAS MOVING EAST AT 45
MPH INTO NORTHERN MCMULLEN AND SOUTHERN ATASCOSA COUNTIES. THE STORM
WAS ENTERING THE SOUHTWEST CORNER OF ATASCOSA COUNTY NEAR HINDES. IT
HAD MOVED THROUGH THE CITY OF COTULLA IN LASALLE COUNTY.
 
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.
 
PLEASE LISTEN TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO STATION
FOR LATER S(TATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER EVENT.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 1, 3:02 PM CSTSevere Thunderstorm WarningEWXLa Salle28 min
Feb 1, 3:10 PM CSTTornado WarningEWXLa Salle35 min
Feb 1, 3:49 PM CSTSevere Thunderstorm WarningEWXBexar41 min
Feb 1, 4:24 PM CSTSevere Thunderstorm WarningEWXGuadalupe, Karnes, Wilson51 min
Feb 1, 4:27 PM CSTSevere Thunderstorm WarningEWXHays, Travis, Williamson63 min
Feb 1, 5:02 PM CSTSevere Thunderstorm WarningEWXBastrop, Caldwell58 min
Feb 1, 5:02 PM CSTSevere Thunderstorm WarningEWXLee, Milam58 min

Nearby

Tornado Warnings in Texas, 1990Every tornado warning in 1990Tornadoes in 1990

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.