Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 227, NWS Austin/San Antonio, TX

October 19, 1998Bastrop County, Lee County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 19, 1998, 3:19 PM CDT for Bastrop County, Lee County, Texas. It was in force for 2 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 19, 1998, 3:19 PM CDT (20:19 UTC)
Expired
Oct 19, 1998, 5:20 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Bastrop County, TX, Lee County, TX

The radar

The Ft Hood radar (KGRK), 62 km from the middle of the area, began a volume at 20:22 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, 8.3 hours before the alert went out and 276 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 1998-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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 1998-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 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
29 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
535 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
-23 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 192022
FFWSAT
TXC021-055-091-187-287-192220-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
319 PM CDT MON OCT 19 1998

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

* FLASH FLOOD WARNING FOR...
  BASTROP IN TEXAS
  LEE IN TEXAS
  COMAL IN TEXAS
  CALDWELL IN TEXAS
  GUADALUPE IN TEXAS

* UNTIL 520 PM CDT

* AT AT 315 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR
  MODERATE TO OCCASIONAL HEAVY RAIN FROM NEW BRAUNFELS TO BASTROP
  TO GIDDINGS AND LINCOLN... MOVING NORTHEAST AT 15 MPH.

* RAINFALL RATES OF 1/2 TO 1 INCH PER HOUR WILL ADD TO THE FLOOD
  PROBLEMS.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!


MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES... DIPS... OR LOW WATER CROSSINGS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A SMALL
ONE... ON FOOT. TO ESCAPE RISING WATER MOVE TO HIGHER GROUND. DO
NOT DRIVE AROUND BARRICADES.

PASHOS

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 Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at Oct 18, 8:30 PM CDT, 18 hours 49 minutes earlier.

Area forecast discussion, Oct 18, 8:30 PM CDT, 18 hours 49 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
830 PM CDT SUN OCT 18 1998

EXPECT AT LEAST LGT TO MDT CONVECTION/STRATIFORM PCPN TO CONTINUE ACRS
THE CWA IN RESPONSE TO MSTR CONVERGENCE ASSOCD WITH THE NEARBY
QUASI-STATIONARY FNT AND WITH OVERRUNNING. PW VALUES REMAIN HIGH OVR
THE CWA. THUS FLOODING POTENTIAL REMAINS TNGT. NGM/ETA/AVN KEEPS SFC
FNT...BASED ON THETA-E GRADIENT...ACRS THE CNTRL/SRN CWA MON...
RESULTING IN CONTINUED MOD/HVY RAIN. NO CHGS ATTM.

87

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 10:13 PM CDTFlash Flood WarningEWXDeWitt, Karnes5 hr
Oct 18, 11:38 PM CDTFlash Flood WarningEWXGonzales3 hr
Oct 19, 12:10 AM CDTFlash Flood WarningEWXLavaca3 hr
Oct 19, 3:00 AM CDTFlash Flood WarningEWXDeWitt, Gonzales, Karnes, Lavaca3 hr
Oct 19, 6:30 AM CDTFlash Flood WarningEWXDeWitt, Gonzales, Karnes4 hr
Oct 19, 6:30 AM CDTFlash Flood WarningEWXLavaca4 hr
Oct 19, 8:05 AM CDTFlash Flood WarningEWXDeWitt, Gonzales, Karnes, Lavaca3 hr
Oct 19, 8:14 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Fayette, Gonzales, Lee4 hr
Oct 19, 9:50 AM CDTFlash Flood WarningEWXComal, Hays3 hr
Oct 19, 10:53 AM CDTFlash Flood WarningEWXGuadalupe82 min
Oct 19, 12:17 PM CDTFlash Flood WarningEWXCaldwell, Comal, Guadalupe, Hays3 hr
Oct 19, 12:17 PM CDTFlash Flood WarningEWXBastrop, Lee3 hr
Oct 19, 12:17 PM CDTFlash Flood WarningEWXWilson3 hr
Oct 19, 3:19 PM CDTFlash Flood WarningEWXCaldwell, Comal, Guadalupe2 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.