Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 86, NWS Austin/San Antonio, TX

August 22, 1998Kerr County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 22, 1998, 7:55 PM CDT for Kerr 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, 7:55 PM CDT (00:55 UTC)
Expired
Aug 22, 1998, 10:55 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Kerr County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.9 hours before the alert went out and 163 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 1998-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 854 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, Del Rio, TX at 00:00Z on 1998-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 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
854 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
781 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
27 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 230055
FFWSAT
TXC019-265-463-230355-

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

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

* FLASH FLOOD WARNING FOR...
  KERR COUNTY IN SOUTH CENTRAL TEXAS
  BANDERA COUNTY IN SOUTH CENTRAL TEXAS
  UVALDE COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 1055 PM CDT

* FLASH FLOODING EXPECTED AROUND-
  COUTYWIDE ACROSS THE WARNED COUNTIES

* A BAND OF HEAVY SHOWERS EXTENDED FROM SAN ANTONIO ACROSS
  NORTHERN MEDINA COUNTY TO UVALDE.  MORE HEAVY RAIN COVERED MUCH
  OF THE HILL COUNTRY ESPECIALLY IN BANDERA AND KERR COUTNITES.
  RANFALL RATES WERW AROUND ONE INCH AN HOUR. THE REMNANTS OF
  CHARLEY...NOW AN AREA OF LOW PRESSURE...WAS LOCATED BETWEEN
  UVALDE AND COTULLA AND WAS BECOMING NEARLY STATIONARY.  THIS WILL
  CONTINUE TO CREATE HEAVY RAINS AND FLOODING THROUGH THE EVENING.

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...
ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING. IT IS VERY DIFFICULT
AT NIGHT TO TELL HOW MUCH WATER IS ON ROADS. MOTORISTS SHOULD NOT
DRIVE THROUGH WATER OF UNKNOWN DEPTH.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:30 PM CDTFlash Flood WarningEWXBexar2 hr
Aug 22, 7:55 PM CDTFlash Flood WarningEWXBandera, Uvalde3 hr
Aug 22, 9:15 PM CDTFlash Flood WarningEWXMedina3 hr
Aug 22, 9:50 PM CDTFlash Flood WarningEWXUvalde, Zavala4 hr
Aug 22, 10:51 PM CDTFlash Flood WarningEWXBandera3 hr
Aug 23, 12:00 AM CDTFlash Flood WarningEWXMedina2 hr
Aug 23, 1:43 AM CDTFlash Flood WarningEWXBandera, Real, Uvalde107 min
Aug 23, 1:43 AM CDTFlash Flood WarningEWXMedina, Zavala107 min
Aug 23, 1:43 AM CDTFlash Flood WarningEWXKinney107 min
Aug 23, 2:06 AM CDTFlash Flood WarningEWXDeWitt, Lavaca4 hr
Aug 23, 3:56 AM CDTFlash Flood WarningEWXEdwards, Kinney, Uvalde3 hr
Aug 23, 3:56 AM CDTFlash Flood WarningEWXReal3 hr
Aug 23, 5:06 AM CDTFlash Flood WarningEWXBandera, Medina3 hr
Aug 23, 6:27 AM CDTFlash Flood WarningEWXDeWitt, Gonzales3 hr
Aug 23, 6:52 AM CDTFlash Flood WarningEWXEdwards, Kerr, Kinney, Real, Uvalde4 hr
Aug 23, 7:46 AM CDTFlash Flood WarningEWXCaldwell, Comal, Guadalupe, Hays3 hr
Aug 23, 9:10 AM CDTFlash Flood WarningEWXVal Verde6 hr
Aug 23, 9:32 AM CDTFlash Flood WarningEWXBlanco6 hr
Aug 23, 10:13 AM CDTFlash Flood WarningEWXDeWitt, Gonzales, Lavaca6 hr
Aug 23, 10:46 AM CDTFlash Flood WarningEWXEdwards, Kinney, Uvalde4 hr
Aug 23, 10:46 AM CDTFlash Flood WarningEWXKerr, Real4 hr
Aug 23, 11:07 AM CDTFlash Flood WarningEWXCaldwell, Guadalupe, Hays4 hr
Aug 23, 2:39 PM CDTFlash Flood WarningEWXBandera, Edwards, Kerr, Real5 hr
Aug 23, 2:39 PM CDTFlash Flood WarningEWXKinney, Uvalde5 hr
Aug 23, 2:39 PM CDTFlash Flood WarningEWXVal Verde5 hr
Aug 23, 5:36 PM CDTFlash Flood WarningEWXAtascosa, Bexar, Wilson3 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.