Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 79, NWS Austin/San Antonio, TX

August 22, 1998Gonzales County, Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 22, 1998, 4:30 PM CDT for Gonzales County, Lavaca County, Texas. It was in force for 3 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
Aug 22, 1998, 4:30 PM CDT (21:30 UTC)
Expired
Aug 22, 1998, 7:30 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Gonzales County, TX, Lavaca County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 9.5 hours before the alert went out and 188 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 1998-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 152 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 1998-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.193958Sfc1 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
152 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 222131
FFWSAT
TXC177-285-230030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
430 PM CDT SAT AUG 22 1998

THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GONZALES COUNTY IN SOUTH CENTRAL TEXAS
  LAVACA COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 730 PM CDT

* SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE NORTHWARD ACROSS
LAVACA COUNTY AD NORTHEASTWARD ACROSS GONZALES COUNTIES FOR THE
NEXT SEVERAL HOURS.  ADDITIONAL RAINFALL AMOUNTS OF 1 1/2 TO 2
INCHES CAN BE EXPECTED.

FLOODING HAS BEEN REPORTED IN HALLETTSVILLE.  MANY SECONDARY
ROADS..LOWLYING AREAS AND LOW WATER CROSSINGS ARE ALSO
UNDER WATER IN LAVACA COUNTY.  STREAMS AND CREEKS ARE AT OR OUT OF
BANKS.

MOTORISTS SHOULD EXERCISE EXTREME CAUTION THIS EVENING.  RUNOFF
FROM THE RAIN WILL CONTINUE FOR THE NEXT SEVERAL HOURS.

IF YOU ARE IN THESE AREAS... MOVE TO HIGHER GROUND. DO NOT DRIVE
THROUGH WATER COVERING THE ROAD.

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 22, 5:57 AM CDTFlash Flood WarningEWXLavaca3 hr
Aug 22, 5:57 AM CDTFlash Flood WarningEWXLavaca3 hr
Aug 22, 8:15 AM CDTFlash Flood WarningEWXDeWitt, Karnes3 hr
Aug 22, 8:15 AM CDTFlash Flood WarningEWXBexar3 hr
Aug 22, 8:21 AM CDTFlash Flood WarningEWXDeWitt, Karnes3 hr
Aug 22, 8:21 AM CDTFlash Flood WarningEWXBexar3 hr
Aug 22, 10:53 AM CDTFlash Flood WarningEWXBexar, Guadalupe, Wilson3 hr
Aug 22, 10:53 AM CDTFlash Flood WarningEWXAtascosa3 hr
Aug 22, 1:15 PM CDTFlash Flood WarningEWXMedina3 hr
Aug 22, 1:18 PM CDTFlash Flood WarningEWXFrio3 hr
Aug 22, 1:24 PM CDTFlash Flood WarningEWXAtascosa2 hr
Aug 22, 1:35 PM CDTFlash Flood WarningEWXGonzales, Lavaca3 hr
Aug 22, 1:48 PM CDTFlash Flood WarningEWXBexar, Guadalupe3 hr
Aug 22, 1:58 PM CDTFlash Flood WarningEWXComal, Kendall3 hr
Aug 22, 3:56 PM CDTFlash Flood WarningEWXHays3 hr
Aug 22, 4:12 PM CDTFlash Flood WarningEWXFrio2 hr
Aug 22, 4:37 PM CDTFlash Flood WarningEWXBexar, Guadalupe3 hr
Aug 22, 5:01 PM CDTFlash Flood WarningEWXBandera, Kerr3 hr
Aug 22, 5:04 PM CDTFlash Flood WarningEWXUvalde, Zavala3 hr
Aug 22, 6:52 PM CDTFlash Flood WarningEWXHays3 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.