Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 154, NWS Austin/San Antonio, TX

September 16, 1998Gonzales County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 16, 1998, 5:09 PM CDT for Gonzales County, Texas. It was in force for 116 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
Sep 16, 1998, 5:09 PM CDT (22:09 UTC)
Expired
Sep 16, 1998, 7:05 PM CDT
In force
116 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Gonzales County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.2 hours before the alert went out and 193 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 1998-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 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 1998-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
27 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
17 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 KSAT 162210
FFWSAT
TXC177-170005-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
509 PM CDT WED SEP 16 1998

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

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

* UNTIL 705 PM CDT

* AN AREA OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN UPPER AIR
  DISTURBANCE AND AN ABUNDANT SUPPLY OF TROPICAL MOISTURE WILL
  CONTINUE TO PLAGUE GONZALES COUNTY.  RAINFALL RATES OF ONE HALF
  INCH ARE CURRENTLY OCCURING... AND AN ADDITIONAL ONE HALF TO ONE
  INCH IS POSSIBLE WITH AN AREA OF SHOWERS APPROACHING FROM
  SOUTHEAST.  WITH THE SATURATED GROUND...WATER WILL RUN OFF
  QUICKLY.

  DO NOT DRIVE THROUGH WATER COVERING THE ROAD.

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. MOVE TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 5:11 AM CDTFlash Flood WarningEWXBexar, Comal3 hr
Sep 16, 3:58 PM CDTFlash Flood WarningEWXDeWitt, Lavaca3 hr
Sep 16, 6:45 PM CDTFlash Flood WarningEWXEdwards, Real3 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.