Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 60, NWS Austin/San Antonio, TX

May 21, 1992Bexar County, Comal County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 21, 1992, 12:21 PM CDT for Bexar County, Comal County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
May 21, 1992, 12:21 PM CDT (17:21 UTC)
Expired
May 21, 1992, 2:30 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Bexar County, TX, Comal County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 5.4 hours before the alert went out and 235 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 1992-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1686 joules per kilogram.LCLEL10008507005003002001001 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 1992-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
1686 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
64 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 211722
FFWSAT
TXC029-091-211930-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1221 PM CDT THU MAY 21 1992
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  230 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
 
   ...BEXAR COUNTY...COMAL COUNTY
 
NUMEROUS THUNDERSTORMS PRODUCING VERY HEAVY RAINS OF TWO INCHES PER HO
OR MORE CONTINUE TO MOVE INTO BEXAR...COMAL...AND KENDALL COUNTIES.
SEVERAL PRIMARY AND SECONDARY ROADS ARE NOW REPORTED CLOSED.
 
THE STORMS MOVING EAST AND NORTHEAST FROM KENDALL COUNTY ARE MERGING
WITH THUNDERSTORMS MOVING NORTHWARD INTO BEXAR AND COMAL COUNTIES.
 
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
RISING WATER DURING THREATENING RAINS.
 
FLOOD PRONE URBAN AREAS FILL WITH WATER QUICKLY.  CLOGGED STORM
DRAINS MAY CAUSE OTHER AREAS TO FLOOD.  DO NOT DRIVE THROUGH
FLOOD WATERS AND STAY AWAY FROM STORM DRAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 10:50 AM CDTFlash Flood WarningEWXBandera, Bexar, Kendall115 min
May 21, 10:50 AM CDTFlash Flood WarningEWXKerr115 min
May 21, 3:26 PM CDTFlash Flood WarningEWXBexar2 hr
May 21, 4:01 PM CDTFlash Flood WarningEWXTravis, Williamson3 hr
May 21, 4:01 PM CDTFlash Flood WarningEWXHays3 hr
May 21, 4:24 PM CDTFlash Flood WarningEWXBexar, Comal3 hr
May 21, 5:24 PM CDTFlash Flood WarningEWXBexar3 hr

Nearby

Flash Flood Warnings in Texas, 1992Every flash flood warning in 1992

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.