Alert archive / Texas / Flash Flood Warnings in 1996

Flash Flood Warning 8, NWS Austin/San Antonio, TX

May 31, 1996Zavala County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 31, 1996, 11:23 PM CDT for Zavala County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 31, 1996, 11:23 PM CDT (04:23 UTC)
Expired: Jun 1, 1996, 2:30 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Zavala County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 4.4 hours before the alert went out and 269 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1565 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 010425
FFWSAT
TXC507-010730-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1123 PM CDT FRI MAY 31 1996
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  230 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...ZAVALA COUNTY
 
AT 1115 PM NATIONAL WEATHER SERVICE RADAR INDICATED THUNDERSTORMS
STRETCHING FROM EAGLE PASS TO HONDO MOVING TO THE NORTHEAST 10 TO 15
MPH. RAINFALL AMOUNTS SINCE 7 PM HAVE TOTALED 2 TO 3 INCHES ACROSS PARTS
OF ZAVALA COUNTY...MUCH OF THAT IN THE LAST HOUR.
 
THUNDERSTORMS CONTINUE TO DEVELOP IN MEXICO AND MOVE ACROSS THE RIO
GRANDE.  ADDITIONAL RAINFALL OVERNIGHT WILL RESULT IN FLOODED LOW WATER
CROSSINGS AND LOW LYING AREAS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS OBSERVED
ACT QUICKLY.  MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSPS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT TO ESCAPE
RISING WATER DURING THREATENING RAINS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 8:07 PM CDT	Severe Thunderstorm Warning	EWX	Bandera	68 min
May 31, 9:25 PM CDT	Flash Flood Warning	EWX	Medina	3 hr
May 31, 10:25 PM CDT	Flash Flood Warning	EWX	Uvalde	3 hr
Jun 1, 12:33 AM CDT	Flash Flood Warning	EWX	Medina	3 hr
Jun 1, 12:58 AM CDT	Flash Flood Warning	EWX	Frio	3 hr
Jun 1, 2:40 AM CDT	Flash Flood Warning	EWX	Frio, Medina, Uvalde, Zavala	6 hr
Jun 1, 3:01 AM CDT	Flash Flood Warning	EWX	Dimmit	6 hr
Jun 1, 6:22 PM CDT	Flash Flood Warning	EWX	Lee	3 hr
Jun 1, 6:38 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie	67 min

Nearby

Flash Flood Warnings in Texas, 1996 Every flash flood warning in 1996

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.