Alert archive / Texas / Flash Flood Warnings in 1992

Flash Flood Warning 4, NWS Corpus Christi, TX

May 21, 1992Nueces County, Texas

NWS Corpus Christi, TX issued this flash flood warning at May 21, 1992, 11:33 AM CDT for Nueces County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 21, 1992, 11:33 AM CDT (16:33 UTC)
Expired
May 21, 1992, 3:25 PM CDT
In force
4 hr
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County Nueces County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 4.6 hours before the alert went out and 17 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 KCRP 211634
FFWCRP
TXC355-212230-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1133 AM CDT THU MAY 21 1992
 
THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL TEXAS
 
   ...WESTERN NUECES COUNTY
 
A FLASH FLOOD WARNING IS IN EFFECT THROUGH THE REMAINDER TODAY FOR
WESTERN NUECES COUNTY FOR PERSISTANT VERY HEAVY RAINFALL ACROSS THAT
AREA.
 
WEATHER RADAR HAS SHOWN THUNDERSTORMS DEVELOPING IN KLEBERG COUNTY AND
MOVING NORTHWARD INTO WESTERN NUECES COUNTY ALONG HIGHWAY 77 ALL
MORNING WITH VERY HEAVY RAINFALL PERSISTING IN THE GENERAL AREA FROM
BISHOP TO DRISCOLL AND ACROSS HIGHWAY 44 BETWEEN ROBSTOWN AND AGUA
DULCA TO NEAR MATHIS.
 
THUNDERSTORMS CONTINUE TO DEVELOP AND TRACK OVER THE SAME AREA
PRODUCING HIGHWATER IN CREEKS AND STREAMS.  THE TEXAS DEPARTMENT OF
PUBLIC SAFTY REPORTED DEEP WATER IN THE MEDIAN AND DITCHES ALONG
HIGHWAY 77 NORTH OF BISHOP AND STATED THAT ANY MORE WATER WOULD
FLOOD THE HIGHWAY.  MORE HEAVY RAINFALL IS ON THE WAY.
 
THIS WILL ALSO PUT ADDITIONAL FLOOD WATER INTO ALREADY FLOODED
PETRONILA CREEK WEST OF CHAPMAN RANCH WHERE HIGHWAY 70 REMAINS CLOSED.
 
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL( ONE...ON FOOT.
 
5

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 21, 10:20 AM CDT, 1 hour 13 minutes before
TXZ040-042-211915-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1019 AM CDT THU MAY 21 1992

...VERY UNSTABLE WEATHER CONDITIONS OVER SOUTH TEXAS TODAY...

TWO UPPER LEVEL DISTURBANCES WERE INFLUENCING SOUTH TEXAS WEATHER
TODAY...ONE JUST WEST OF DEL RIO IN MEXICO AND THE OTHER OVER DEEP
SOUTH TEXAS WEST OF CORPUS CHRISTI.

THE COMBINATION OF THESE DISTURBANCES AND WIDESPREAD TROPICAL AIR OVER
SOUTH TEXAS WILL PRODUCE SHOWERS AND THUNDERSTORMS...SOME WITH BRIEF
VERY HEAVY RAINFALL.

WITH THE EXTREMELY UNSTABLE NATURE OF THE SOUTH TEXAS AIRMASS...FUNNEL
CLOUDS AND WEAK...BUT STILL DANGEROUS TORNADOS ARE POSSIBLE ACROSS
SOUTH TEXAS AND THE TEXAS HILL COUNTRY.  THE MAIN FOCUS OF THIS THREAT
WILL BE FROM THE COASTAL BEND REGION NORTHWARD INTO THE SOUTHERN AND
EASTERN FRINGES OF THE HILL COUNTY...OR NEAR SAN ANTONIO TO NORTH OF
THE AUSTIN AREA.

PERSONS LIVING IN THE NORTHERN HALF OF THE COASTAL BEND REGI+ON OR
TRAVELING NORTHWARD FROM CORPUS CHRISTI INTO THE SAN ANTONIO AND
AUSTIN AREAS SHOULD BE ALERT FOR BRIEF HEAVY RAINFALL AND THE
POSSIBLITY OF THESE FUNNEL CLOUDS AND WEAK TORNADOS THROUGHOUT THE
REMAINDER OF TODAY.

5

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.