Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 39, NWS Corpus Christi, TX

October 18, 19984 counties in Texas

NWS Corpus Christi, TX issued this flash flood warning at Oct 18, 1998, 2:07 PM CDT for 4 counties in Texas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 18, 1998, 2:07 PM CDT (19:07 UTC)
Expired
Oct 18, 1998, 6:00 PM CDT
In force
4 hr
Issued by
NWS Corpus Christi, TX
Area
Whole counties

Counties Aransas County, TX, Calhoun County, TX, Refugio County, TX, Victoria County, TX

The radar

The Corpus Christi radar (KCRP), 87 km from the middle of the area, began a volume at 19:08 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 7.1 hours before the alert went out and 83 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 1998-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2494 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 1998-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
2494 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 181911
FFWCRP
TXC007-025-057-175-249-273-297-355-391-409-469-182300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
207 PM CDT SUN OCT 18 1998

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

   * FLASH FLOOD WARNING FOR...
     SAN PATRICIO COUNTY IN TEXAS
     VICTORIA COUNTY IN TEXAS
     LIVE OAK COUNTY IN TEXAS
     BEE COUNTY IN TEXAS
     KLEBERG COUNTY IN TEXAS
     REFUGIO COUNTY IN TEXAS
     JIM WELLS COUNTY IN TEXAS
     NUECES COUNTY IN TEXAS
     CALHOUN COUNTY IN TEXAS
     GOLIAD COUNTY IN TEXAS
     ARANSAS COUNTY IN TEXAS
     INCLUDING VICTORIA...SINTON...ROCKPORT...ROBSTOWN...PORTLAND...
     PORT LAVACA...MATHIS...KINGSVILLE...INGLESIDE...CORPUS
     CHRISTI...BEEVILLE AND ALICE

   * UNTIL 600 PM CDT

   * AT 200 PM DOPPLER RADAR WAS ESTIMATING RAINFALL OF OVER 5       
     INCHES ACROSS THE COASTAL BEND.  IN ADDITION...THERE HAVE BEEN  
     NUMEROUS REPORTS OF FLOODED ROADS AND STREETS.  ADDITIONAL      
     RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE WITH TOTALS OF 6 
     TO 10 INCHES EXPECTED.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID
CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHI>CLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
CORPUS CHRISTI.

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.

NWS Corpus Christi, TX wrote its last area forecast discussion before this flash flood warning went out at Oct 18, 10:00 AM CDT, 4 hours 7 minutes earlier.

Area forecast discussion, Oct 18, 10:00 AM CDT, 4 hours 7 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1000 AM CDT SUN OCT 18 1998

WILL KEEP SHORT DUE TO POTENTIAL FLOOD PROBLEMS AND ON GOING FFA.
KCRP 88D IS SHOWING TRAIN ECHO FROM ALI TO VCT THAT WILL BECOME AREA
OF CONCERN BY EARLY AFTERNOON.  WILL KEEP PREVIOUS FCST GOING WITH
LITTLE CHANGE.  HOPEFULLY IF THINGS SETTLE DOWN...AND THEY PROBABLY
WILL NOT...WILL HAVE MORE TIME TO REVIEW DATA FOR AFTERNOON PACKAGE.

78

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 17, 11:29 PM CDTFlash Flood WarningCRPCaldwell, Gonzales, Guadalupe4 hr
Oct 17, 11:29 PM CDTFlash Flood WarningCRPComal4 hr
Oct 18, 7:25 AM CDTFlash Flood WarningCRPBee95 min
Oct 18, 7:30 AM CDTFlash Flood WarningCRPBee, Goliad90 min
Oct 18, 10:52 AM CDTFlash Flood WarningCRPNueces, San Patricio4 hr
Oct 18, 10:52 AM CDTFlash Flood WarningCRPAransas, Calhoun, Refugio4 hr
Oct 18, 12:00 PM CDTFlash Flood WarningCRPJim Wells, Kleberg3 hr
Oct 18, 12:00 PM CDTFlash Flood WarningCRPDuval3 hr
Oct 18, 2:07 PM CDTFlash Flood WarningCRPBee, Jim Wells, Live Oak, Nueces, San Patricio4 hr
Oct 18, 2:07 PM CDTFlash Flood WarningCRPKleberg4 hr
Oct 18, 2:07 PM CDTFlash Flood WarningCRPGoliad4 hr
Oct 18, 6:15 PM CDTFlash Flood WarningCRPGoliad, Victoria4 hr

Nearby

Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998

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; radar from the NEXRAD Level II archive.