Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 91, NWS Austin/San Antonio, TX

November 19, 1992Atascosa County, Wilson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Nov 19, 1992, 11:55 AM CST for Atascosa County, Wilson County, Texas. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Nov 19, 1992, 11:55 AM CST (17:55 UTC)
Expired
Nov 19, 1992, 6:00 PM CST
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Atascosa County, TX, Wilson County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 5.9 hours before the alert went out and 173 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 1992-11-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1185 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 1992-11-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 197 square meters per square second.193958Sfc1 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
1185 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
615 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
197 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 191758
FFWSAT
TXC013-493-200000-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1155 AM CST THU NOV 19 1992
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS EXTENDED THE
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
 
   ...ATASCOSA COUNTY...WILSON COUNTY
 
HEAVY RAIN HAS CONTINUED THROUGH THE LATE MORNING OVER ATASCOSA AND
WILSON COUNTIES. GENERAL RAINFALL HAS AVERAGED FROM 4 TO 5 INCHES OVER
THE COUNTY WITH ISOLATED TOTALS NEAR 8 INCHES. SEVERE FLOODING
CONTINUES ACROSS BOTH COUNTIES...WITH SOME RESCUES REPORTED OF
STRANDED MOTORISTS ALREADY.
 
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 THREAHTENING 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
Nov 19, 9:25 AM CSTFlash Flood WarningEWXAtascosa, Wilson3 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.