Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 101, NWS Austin/San Antonio, TX

August 23, 1998Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 23, 1998, 9:10 AM CDT for Val Verde County, Texas. It was in force for 6 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, 9:10 AM CDT (14:10 UTC)
Expired
Aug 23, 1998, 3:10 PM CDT
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Val Verde County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 2.2 hours before the alert went out and 66 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 12:00Z on 1998-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 479 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, Del Rio, TX at 12:00Z on 1998-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
479 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
492 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
40 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 231410
FFWSAT
TXC465-232010-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
910 AM 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

* UNTIL 310 PM CDT

* FLASH FLOODING EXPECTED AROUND-
  COUNTY WIDE WITH SPECIAL EMPHASIS FROM DEL RIO TO COMSTOCK

* AT 908 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAINS ASSOCIATED WITH THE REMNANTS OF TROPICAL
  DEPRESSION CHARLEY AFFECTING THE DEL RIO AREA. DEL RIO POLICE
  OFFICIALS REPORT THAT LOW WATER CROSSINGS NEAR THE CITY ARE
  BEGINNING TO FLOOD AND SIMILAR CONDITIONS CAN BE EXPECTED TO
  OCCUR OVER THE REMAINDER OF THE COUNTY LATER THIS MORNING.

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.

TAYLOR

&

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, 7:55 PM CDTFlash Flood WarningEWXKerr3 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, 9:32 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.