Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 1, NWS Corpus Christi, TX

April 24, 1990San Patricio County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Apr 24, 1990, 3:09 PM CDT for San Patricio County, Texas. It was in force for 109 min.

The area

The counties it named.

The facts

Issued
Apr 24, 1990, 3:09 PM CDT (20:09 UTC)
Expired
Apr 24, 1990, 4:58 PM CDT
In force
109 min
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County San Patricio County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 8.2 hours before the alert went out and 36 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 1990-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 815 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 1990-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 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
815 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
117 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 242011
FFWCRP
TXC409-242300-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
309 PM CDT TUE APR 24 1990
 
THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  600 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH CENTRAL TEXAS
 
   ...WESTERN SAN PATRICIO COUNTY
 
A STATIONARY CLUSTER OF STRONG THUNDERSTORMS REMAINS OVER WESTERN SAN
PATRICIO COUNTY...CENTERED NEAR MATHIS. HEAVY RAINS HAVE BEEN
OCCURRING SINCE 1:00 PM...WITH UP TO 8 INCHES RECORDED AT A GRAIN
ELEVATOR JUST WEST OF MATHIS DURING THE PAST 2 HOURS.
 
SAN PATRICIO SHERIFF'S OFFICE REPORTS SEVERAL ROADS AND HIGHWAYS
WERE BECOMING FLOODED. A FOOT OF WATER WAS COVERING A SECTION
OF I-37 ONE AN HALF MILES NORTH OF MATHIS.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.

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, Apr 24, 2:55 PM CDT, 14 minutes before
TXZ042-242100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
253 PM CDT TUE APR 24 1990

...SRONG THUNDERSTORMS WITH VERY HEAVY RAINFALLS AND HAIL OVER SAN
PATRICIO COUNTY...

AT 210 PM NATIONAL WEATHER SERVICE RADAR SHOWED AN AREA OF STRONG
THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER SAN PATRICIO.
THE STRONGEST THUNDERSTORM WAS NEAR MATHIS. THE THUNDERSTORM
WAS MOVING SLOWLY TO THE NORTH AT 15 MPH. THE PUBLIC REPORTED MARBLE
SIZE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN IN MATHIS AND SINTON.

THESE THUNDERSTORMS WILL PRODUCE STRONG WINDS...PERIODS OF HEAVY
RAINFALLS PRODDUCING LOCALIZED FLOODING...DANGEROUS LIGHTING AND SMALL
HAIL FOR THE NEXT HOUR.

RESIDENTS THROUGHOUT THE COASTAL BEND ESPECIALLY IN SAN PATRICIO AND
REFUGIO COUNTIES SHOULD BE ON THE LOOKOUT FOR THREATING WEATHER AND BE
PREPARED TO SEEK SHELTER. MARINE INTERESTS FROM SAN ANTONIO BAY TO
CORPUS CHRISTI BAY SHOULD EXERCISE CAUTION.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION FOR
FURTHER STATEMENTS OR POSSIBLE WARNINGS.

Nearby

Flash Flood Warnings in Texas, 1990Every flash flood warning in 1990

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.