Alert archive / Texas / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 32, NWS Austin/San Antonio, TX

April 6, 1994Webb County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 6, 1994, 2:25 AM CDT for Webb County, Texas. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Apr 6, 1994, 2:25 AM CDT (07:25 UTC)
Expired
Apr 6, 1994, 3:30 AM CDT
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Webb County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 7.4 hours before the alert went out and 196 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 00:00Z on 1994-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1826 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 00:00Z on 1994-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -84 square meters per square second.1939587897117Sfc1 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
1826 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
-84 m²/s²
0-3 km storm-relative helicity
-27 m²/s²
Significant tornado parameter
-0.7
Supercell composite
-3.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 060727
SVRSAT
TXC479-060830-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
225 AM CDT WED APR 6 1994
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
 
   ...WEBB COUNTY
 
AT 225 AM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
JUST WEST OF LAREDO. THE STORM WAS MOVING TO THE EAST AT 30 MPH.
 
SEVERE THUNDERSTORM WINDS CAN REACH SPEEDS OVER 60 MPH.  THESE WINDS
BLOW DOWN TREES...POWER LINES...AND SEVERELY DAMAGE MOBILE HOMES...
SOMETIMES BUILDINGS.  VERY LARGE HAIL CAN INJURE ANYONE CAUGHT
OUTSIDE."
 
PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY
OF LARGE HAIL AND DAMAGING WINDS.  FREQUENT LIGHTNING AND LOCALLY
HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Apr 5, 10:42 PM CDT, 3 hours 43 minutes before
TXZ204>206-217>219-223-228-230-060430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1040 PM CDT TUE APR 05 1994

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PART OF SOUTH CENTRAL
TEXAS UNTIL 11 PM CDT...

AT 1035 PM CDT THUNDERSTORMS HAVE FIRED OVER MAVERICK COUNTY TO THE NORTHEAST
AND SOUTH OF EAGLE PASS.  THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT
ABOUT 30 MPH.  BRIEF HEAVY RAIN...GUSTY WINDS...AND DANGEROUS LIGHTING CAN
BE EXPECTED WITH THESE THUNDERSTORMS.  THESE THUNDERSTORMS WILL LIKELY
MOVE INTO ZAVALA AND DIMMIT COUNTIES DURING THE NEXT HOUR.

OTHER WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WERE LOCATED
OVER MCMULLEN AND EASTERN GONZALES COUNTY.   MOVEMENT WAS RAPIDLY TO THE
EAST.

ADDITIONAL STATEMENTS WILL BE ISSUED TO KEEP YOU INFORMED OF THE LATEST
WEATHER CHANGES.
Special weather statement, Apr 5, 11:02 PM CDT, 3 hours 23 minutes before
TXZ192-191-193-208-194-209-174-060600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1101 PM CDT TUE APR 5 1994

...SEVERE THUNDERSTORM WATCH FOR LEE...FAYETTE AND CALDWELL COUNTIES HAS
EXPIRED...

AT 1055 PM ALL THUNDERSTORM ACTIVITY ACROSS SOUTH CENTRAL TEXAS HAD
DISSIPATED.  ONLY LIGHT RAIN WAS NOTED IN SOUTHERN FAYETTE COUNTY AND
NEAR SAN ANTONIO.

COOLER AND DRYER SURFACE AIR HAS MOVED INTO THE REGION...PREVENTING
THUNDERSTORM ACTIVITY.  THIS WILL BE THE LAST STATEMENT ON THIS EVENT.

LEACH
Special weather statement, Apr 5, 11:18 PM CDT, 3 hours 7 minutes before
TXZ204>206-217>219-223-228-230-239-060530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1115 PM CDT TUE APR 05 1994

...SEVERE THUNDERSTORM WATCH HAS EXPIRED FOR SOUTH CENTRAL TEXAS...
...A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 1215 AM CDT FOR
ZAVALA COUNTY...

AT 1110 PM THUNDERSTORMS WITH HEAVY RAIN WERE INCREASING OVER MARVERICK...
ZAVALA...DIMMIT AND NORTHERN WEBB COUNTIES.  THESE THUNDERSTORMS WERE FORMING
ALONG THE LEADING EDGE OF A COLD FRONT IN VERY MOIST AND UNSTABLE AIR.  THE
STRONGEST THUNDERSTORMS...POSSIBLY SEVERE WERE INDICATED IN IN ZAVALA COUNTY.
THE THUNDERSTORMS LIKELY CONTAIN HAIL...VERY HEAVY RAIN...AND GUSTY WINDS.

OTHER WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WERE LOCATED
FROM DEL RIO TO SOUTH OF JUNCTION.  ALL MOVEMENT WAS NORTHEAST AT 30 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUED TO KEEP YOU INFORMED OF THE LATEST
WEATHER CHANGES.
Special weather statement, Apr 6, 12:27 AM CDT, 1 hour 58 minutes before
TXZ203>204-217>219-228>230-239-060630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1225 AM CDT WED APR 6 1994

...SEVERE THUNDERSTORM WARNING FOR ZAVALA COUNTY HAS EXPIRED...
...SEVERE THUNDERSTORM WARNING IN EFFECT FOR FRIO COUNTY UNTIL 1 AM...
...SEVERE THUNDERSTORM WARNING IN EFFECT FOR UVALDE COUNTY UNTIL 1245 AM...

AT 1215 PM SCATTERED SHOWERS AND THUNDERSTORMS OVER THE AREA FROM UVALDE TO
EAGLE PASS TO COTULLA TO PEARSALL.  THE HEAVIEST THUNDERSTORMS WERE LOCATED
NEAR EAGLE PASS AND PEARSALL...AND OVER NORTHEAST UVALDE COUNTY.  THESE
THUNDERSTORMS WILL LIKELY PRODUCE HAIL AND HEAVY RAIN AS THEY MOVE
NORTHEAST AT NEAR 35 MPH.

ADDITIONAL STATEMENTS WILL BE ISSUErD TO KEEP YOU INFORMED OF THE LATEST
WEATHER CHANGES.
Special weather statement, Apr 6, 12:57 AM CDT, 1 hour 28 minutes before
TXZ203>205-217>221-228>230-239-060700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
100 AM CDT WED APR 6 1994

...SEVERE THUNDERSTORM WARNINGS FOR ZAVALA...FRIO...AND UVALDE COUNTIES
HAVE ALL EXPIRED...

AT 1250 AM SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED SOUTH OF EAGLE
PASS TO CARRRIZO SPRINGS TO PEARSALL.  THUNDERSTORMS HAVE ALSO DEVELOPED
NEAR DEVINE AND WERE MOVING INTO NORTHERN ATASCOSA AND SOUTHWEST BEXAR
COUNTIES.  OTHER WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WERE IN UVALDE
COUNTY.  MOVEMENT WAS GENERALLY NORTHEAST AT NEAR 35 MPH.

SOME OF THESE THUNDERSTORMS LIKELY CONTAIN HAIL...BRIEF HEAVY RAIN AND GUSTY
WINDS.  BE PREPARED TO TAKE COVER SHOULD A WARNING BE ISSUED OR IF SEVERE
WEATHER IS OBSERVED.

ADDITIONAL STATEMENTS WILL BE ISSUED TO KEEP YOU UPDATED ON THE LATEST
WEATHER INFORMATION.
Special weather statement, Apr 6, 1:51 AM CDT, 34 minutes before
TXZ239-060700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
150 AM CDT WED APR 6 1994

...THUNDERSTORMS FORMING TO THE WEST OF LAREDO...

AT 145 AM CDT THUNDERSTORMS WERE DEVELOPING TO THE WEST OF LAREDO IN
MEXICO.  SINCE THESE THUNDERSTORMS WERE MOVING TOWARDS THE NORTHEAST...
THEY COULD AFFECT THE LAREDO METROPOLITAN AREA IN THE NEXT HOUR.  THESE
THUNDERSTORMS COULD BECOME SEVERE AS THEY CROSS THE RIO GRANDE INTO WEBB
COUNTY.  THE AIR OVER THE RIO GRANDE PLAINS REMAINS VERY MOIST AND UNSTABLE
AND A STRONG UPPER AIR DISTURBANCE COULD HELP PRODUCE SEVERE THUNDERSTORMS.

ADDITIONAL STATEMENTS AND OR WARNINGS WILL BE ISSUED TO KEEP YOU UPDATED ON
THE LATEST WEATHER DEVELOPMENTS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 7:21 PM CDTSevere Thunderstorm WarningEWXFayette24 min
Apr 5, 7:47 PM CDTSevere Thunderstorm WarningEWXGonzales28 min
Apr 5, 8:03 PM CDTSevere Thunderstorm WarningEWXLavaca42 min
Apr 5, 8:42 PM CDTSevere Thunderstorm WarningEWXBexar63 min
Apr 5, 11:13 PM CDTSevere Thunderstorm WarningEWXZavala62 min
Apr 5, 11:49 PM CDTSevere Thunderstorm WarningEWXUvalde56 min
Apr 5, 11:58 PM CDTSevere Thunderstorm WarningEWXFrio62 min

Nearby

Severe Thunderstorm Warnings in Texas, 1994Every severe thunderstorm warning in 1994

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.