Alert archive / Texas / Flash Flood Warnings in 1993

Flash Flood Warning 5, NWS Austin/San Antonio, TX

May 5, 1993Bandera County, Medina County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 5, 1993, 3:19 PM CDT for Bandera County, Medina County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 5, 1993, 3:19 PM CDT (20:19 UTC)
Expired
May 5, 1993, 6:00 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Bandera County, TX, Medina County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 8.3 hours before the alert went out and 162 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 1993-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1479 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 1993-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1479 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
-28 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 052021
FFWSAT
TXC019-325-052300-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
319 PM CDT WED MAY 5 1993
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
 
   ...BANDERA COUNTY...MEDINA COUNTY
 
HEAVY RAINFALL ACROSS SOUTH CENTRAL TEXAS HAS BEGUN TO DEVELOP SLOWLY
TOWARD THE WEST. RAINFALL IN THE PAST HOUR ACROSS MEDINA AND BANDERA
COUNTIES HAS BEGUN TO REACH FLASH FLOOD THRESHOLDS. AUTHORITIES IN
MEDINA COUNTY REPORTS SOME OF THE STREETS IN HONDO ARE BEGINNING TO FILL
WITH WATER. HEAVY RAIN IS EXPECTED TO CONTINUE FOR THE NEXT TWO TO THREE
HOURS OVER THESE TWO COUNTIES...SO FLOODING IS IMMINENT.
 
AVOID ALREADY FLOODED AREAS.  TRAVELERS SHOULD NOT ATTEMPT TO
CROSS FLOODED ROADS.  IF YOUR VEHICLE STALLS...LEAVE IT AND MOVE
IMMEDIATELY TO HIGHER GROUND.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO
CROSS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT TO ESCAPE
RISI@NG WATER DURING THREATENING RAINS.

What forecasters said that day

The local office's own words before this flash flood 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, May 5, 9:19 AM CDT, 6 hours before
TXZ034-035-036-037-051515-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
919 AM CDT WED MAY 5 1993

...SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED UNTIL 4 PM FOR TRAVIS ...
HAYS...CALDWELL...BASTROP...LEE...BURLESON...AND FAYETTE COUNTIES...

AT 915 AM...SHOWERS AND THUNDERSTORMS WERE WIDESPREAD ACROSS SOUTH
TEXAS.  THE STRONGEST THUNDERSTORMS WERE FROM SAN MARCOS AND LULING
TO FLATONIA AND ROSANKY...AND FROM ROSANKY TO COLLEGE STATION.

THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 25 MILES AN HOUR.

THE STRONGEST STORMS ARE CAPABLE OF HAIL...DANGEROUS FREQUENT LIGHTNING
AND TORRENTIAL DOWNPOURS.  PERSONS ACROSS SOUTH TEXAS...EPSECIALLY IN
AREAS EAST AND SOUTH OF AUSTIN SHOULD STAY ALERT TO RAPIDLY CHANGING
WEATHER CONDITIONS AND BE PREPARED TO TAKE SHELTER SHOULD THREATENING
WEATHER APPROACH OR A WARNING BE ISSUED.
HOHMANN
Special weather statement, May 5, 9:20 AM CDT, 5 hours 59 minutes before
TXZ034-035-036-037-051515-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
919 AM CDT WED MAY 5 1993

...SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED UNTIL 4 PM FOR TRAVIS ...
HAYS...CALDWELL...BASTROP...LEE...BURLESON...AND FAYETTE COUNTIES...

AT 915 AM...SHOWERS AND THUNDERSTORMS WERE WIDESPREAD ACROSS SOUTH
TEXAS.  THE STRONGEST THUNDERSTORMS WERE FROM SAN MARCOS AND LULING
TO FLATONIA AND ROSANKY...AND FROM ROSANKY TO COLLEGE STATION.

THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 25 MILES AN HOUR.

THE STRONGEST STORMS ARE CAPABLE OF HAIL...DANGEROUS FREQUENT LIGHTNING
AND TORRENTIAL DOWNPOURS.  PERSONS ACROSS SOUTH TEXAS...EPSECIALLY IN
AREAS EAST AND SOUTH OF $AUSTIN SHOULD STAY ALERT TO RAPIDLY CHANGING
WEATHER CONDITIONS AND BE PREPARED TO TAKE SHELTER SHOULD THREATENING
WEATHER APPROACH OR A WARNING BE ISSUED.
HOHMANN

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 5:15 AM CDTFlash Flood WarningEWXZavala90 min
May 5, 5:15 AM CDTSevere Thunderstorm WarningEWXZavala90 min
May 5, 7:02 AM CDTSevere Thunderstorm WarningEWXJackson58 min
May 5, 11:24 AM CDTFlash Flood WarningEWXBastrop3 hr
May 5, 11:46 AM CDTFlash Flood WarningEWXBexar, Comal, Guadalupe3 hr
May 5, 1:04 PM CDTSevere Thunderstorm WarningEWXBandera56 min
May 5, 2:11 PM CDTSevere Thunderstorm WarningEWXBexar34 min
May 5, 2:25 PM CDTFlash Flood WarningEWXComal4 hr
May 5, 2:30 PM CDTSevere Thunderstorm WarningEWXBandera, Uvalde60 min
May 5, 3:27 PM CDTSevere Thunderstorm WarningEWXVictoria63 min
May 5, 4:16 PM CDTSevere Thunderstorm WarningEWXBexar59 min
May 5, 4:37 PM CDTSevere Thunderstorm WarningEWXVictoria68 min
May 5, 5:52 PM CDTFlash Flood WarningEWXVictoria2 hr
May 5, 6:08 PM CDTSevere Thunderstorm WarningEWXLa Salle67 min

Nearby

Flash Flood Warnings in Texas, 1993Every flash flood warning in 1993

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.