Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 113, NWS Austin/San Antonio, TX

August 23, 1998Edwards County, Kinney County, Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 23, 1998, 10:58 PM CDT for Edwards County, Kinney County, Val Verde 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 23, 1998, 10:58 PM CDT (03:58 UTC)
Expired
Aug 24, 1998, 2:00 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Edwards County, TX, Kinney County, TX, Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 4.0 hours before the alert went out and 46 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, Del Rio, TX at 00:00Z on 1998-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1207 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 1998-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
1207 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 240359
FFWSAT
TXC137-271-465-240700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1058 PM CDT SUN AUG 23 1998

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

* FLASH FLOOD WARNING FOR...
  VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS
  EDWARDS COUNTY IN SOUTH CENTRAL TEXAS
  KINNEY COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 200 AM CDT

* FLASH FLOODING EXPECTED AROUND-
  IN EASTERN VAL VERDE COUNTY INCLUDING DEL RIO
  EDWARDS COUNTY
  WESTERN KINNEY COUNTY

* A BAND OF EXREMELY INTENSE RAINFALL EXTENDED FROM SOUTH OF DEL RIO
  THROUGH THE CITY OF DEL RIO THEN NORTH TO JUNO AND WEST TO
  PANDALE. RAINFALL RATES IN DEL RIO AND ALONG THE DEVILS RIVER
  WERE IN EXCESS OF FOUR INCHES AN HOUR. THIS WILL CAUSE MASSIVE
  FLASH FLOODING IN DEL RIO...ALONG HWY 277 AND ALONG THE DEVILS
  RIVER. INTENSE RAIN WILL CONTINUE TO FALL OVER THIS AREA FOR THE
  NEXT FEW HOURS. MANY RAODS ARE BECOMING IMPASSIBLE IN AND AROUND
  DEL RIO AND THERE HAVE ALREADY BEEN EVACUATIONS. THIS IS BECOMING
  A POTENTIALLY LIFE THREATNING SITUATION.

IF YOU LIVE IN AN AREA PRONE TO FLOODING IN AND AROUND DEL RIO TAKE
IMMEDIATE ACTION BY SEEKING HIGHER GROUND. SMALL CREEKS AND STREAMS
WILL FILL WITH WATER RAPIDLY. CAMPERS ALONG THE DEVILS RIVER SHOULD
SEEK HIGHER GROUND IMMEDIATELY. RESIDENTS IN FLOOD PRONE AREAS
SHOULD MONITOR WATER LEVELS AND PREPARE TO EVACUATE IF ASKED TO DO
SO.

IF YOU AnRE 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 23, 7:09 PM CDTFlash Flood WarningEWXEdwards, Kerr, Kinney, Val Verde4 hr
Aug 23, 7:26 PM CDTFlash Flood WarningEWXComal, Kendall3 hr
Aug 24, 12:43 AM CDTFlash Flood WarningEWXEdwards, Kinney, Val Verde8 hr
Aug 24, 4:44 AM CDTFlash Flood WarningEWXUvalde4 hr
Aug 24, 6:32 AM CDTFlash Flood WarningEWXReal4 hr
Aug 24, 8:18 AM CDTFlash Flood WarningEWXEdwards, Kinney, Val Verde6 hr
Aug 24, 8:46 AM CDTFlash Flood WarningEWXUvalde3 hr
Aug 24, 10:20 AM CDTFlash Flood WarningEWXReal6 hr
Aug 24, 11:29 AM CDTFlash Flood WarningEWXUvalde6 hr
Aug 24, 1:57 PM CDTFlash Flood WarningEWXEdwards, Kinney, Val Verde4 hr
Aug 24, 3:57 PM CDTFlash Flood WarningEWXReal3 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.