Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 33, NWS Corpus Christi, TX

October 18, 1998Bee County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Oct 18, 1998, 7:25 AM CDT for Bee County, Texas. It was in force for 95 min. 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, 7:25 AM CDT (12:25 UTC)
Expired
Oct 18, 1998, 9:00 AM CDT
In force
95 min
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County Bee County, TX

The radar

The Corpus Christi radar (KCRP), 74 km from the middle of the area, began a volume at 12:27 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, 0.4 hours before the alert went out and 86 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 KCRP 181224
FFWCRP
TXC025-181355-

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

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BEE IN SOUTH CENTRAL TEXAS

* UNTIL 900 AM CDT

* AT 715 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN LOCATED 10 MILES TO THE NORTHWEST
  OF BEEVILLE... MOVING SLOWLY TO THE SOUTH.

* A LARGE AREA OF SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP
  THROUGHOUT THE MORNING AS A SURFACE FRONTAL BOUNDARY PUSHES TO THE
  SOUTH.  RAINFALL RATES UP TO 2-INCHES PER HOUR CAN BE EXPECTED.

MORE TO HIGHER GROUND TO AVOID THE FLOODING.

AREA RESIDENTS SHOULD MONITOR FLOOD CONDITIONS...AND BE PREPARED
TO MOVE TO HIGHER GROUND...SHOULD FLOOD WATERS THREATEN.  IF FLASH
FLOODING IS OBSERVED...ACT QUICKLY!

LAMARRE

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, 3:00 AM CDT, 4 hours 25 minutes earlier.

Area forecast discussion, Oct 18, 3:00 AM CDT, 4 hours 25 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
300 AM CDT SUN OCT 18 1998

DISCUSSION...DEEP LAYERED MOISTURE PREVAILS ACROSS THE REGION ATTM AND
IS FCST TO REMAIN OVER THE FA THROUGH THE UPCOMING FCST CYCLE.
THETA-E GRADIENT TO THE NORTH WL PUSH SWD ACROSS THE AREA TDY AND
TONIGHT.  SFC/LOW-LEVEL ENVIRONMENTAL FLOW WL BACK TOWARD THE ENE AND
WL BE COUPLED BY AN OVRRNG SE FLOW AT AND ABOVE H8 TO ENHANCE PCPN
DEVELOPMENT OVER THE REGION.  WL ISSUE FLASH FLOOD WATCH FOR THE
ENTIRE CWA AS MOISTURE CONVERGENT AXIS SHIFTS SWD WITH THE LOW-LEVEL
BNDRY.  MAX PCPN WL OCCUR OVER THE ERN HALF OF THE FA WHERE CNVCTV
TRAINING IS ANTICIPATED.  FFG VALUES ARE LOW OVER THE WRN HALF AND
EXPECTED SHRA/TSRA ACTIVITY WL RESULT IN LOCALIZED FLOODING THROUGH
TONIGHT.

CONCENTRATION OF UVM AND LIFT THROUGH ISENTROPIC/OVRRNG PROCESSES WL
DIMINISH AFTER TONIGHT AND A TRANSITION FROM CONVECTIVE TO A MORE
STRATIFORM PCPN WL BE FCST AS A COOLER..MORE STABLE AIRMASS SHIFTS
SWD.

THE FORECAST NUMBERS...

CRP TC 085/068 080/066 078 665
NGP    083/074 080/070 080
VCT    083/065 080/062 075 665
LRD    085/067 080/065 077 665

BML.76

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, 7:30 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 WarningCRPAransas, Calhoun, Refugio, Victoria4 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.