Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 69, NWS Austin/San Antonio, TX

May 26, 1992Webb County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 26, 1992, 6:43 AM CDT for Webb County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 26, 1992, 6:43 AM CDT (11:43 UTC)
Expired
May 26, 1992, 10:00 AM CDT
In force
3 hr
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, 11.7 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 1992-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1670 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 1992-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.19395878Sfc1 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
1670 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
868 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 261145
FFWSAT
TXC479-261500-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
643 AM CDT TUE MAY 26 1992
 
THE NATIONAL WEATHER SERVICE IN SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
 
   ...WEBB COUNTY
 
A THIRD WAVE OF SHOWERS AND THUNDERSTORMS SINCE MIDNIGHT HAS BEGUN TO
MOVE INTO CITY OF LAREDO AND SOUTHERN WEBB COUNTY THIS MORNING. ADDED
TO THE 1 TO 2 INCH GENERAL RAINFALL THAT OCCURRED PRIOR TO THIS
ACTIVITY NOW ENTERING THE CITY...THE ADDITIONAL RAINS WILL LIKELY
CAUSE VERY RAPID FLOODING OF LOW AREAS AND FLOOD-PRONE AREAS...BOTH IN
THE CITY OF LAREDO AND THE TOWN OF RIO BRAVO JUST SOUTH OF LAREDO.
 
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 25, 7:38 PM CDTSevere Thunderstorm WarningEWXMaverick67 min
May 25, 8:09 PM CDTSevere Thunderstorm WarningEWXDimmit66 min
May 25, 8:50 PM CDTSevere Thunderstorm WarningEWXMaverick55 min
May 25, 10:07 PM CDTSevere Thunderstorm WarningEWXWebb68 min
May 26, 4:42 AM CDTSevere Thunderstorm WarningEWXWebb48 min
May 26, 4:26 PM CDTSevere Thunderstorm WarningEWXGuadalupe64 min
May 26, 5:14 PM CDTSevere Thunderstorm WarningEWXWilson46 min
May 26, 6:07 PM CDTSevere Thunderstorm WarningEWXGonzales, Karnes38 min

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.