Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 110, NWS Austin/San Antonio, TX

August 23, 1998Atascosa County, Bexar County, Wilson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 23, 1998, 5:36 PM CDT for Atascosa County, Bexar County, Wilson 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, 5:36 PM CDT (22:36 UTC)
Expired
Aug 23, 1998, 8:35 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Atascosa County, TX, Bexar County, TX, Wilson County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.6 hours before the alert went out and 190 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 1998-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1859 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 1998-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 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
1859 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
522 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-49 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 232237
FFWSAT
TXC013-029-493-240135-

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

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

* FLASH FLOOD WARNING FOR...
  BEXAR COUNTY IN SOUTH CENTRAL TEXAS
  WILSON COUNTY IN SOUTH CENTRAL TEXAS
  ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 835 PM CDT

* AT 534 PM NATIONAL WEATHER SERVICE DOPPLER RADAR A INDICATED LINE
  OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM NEAR
  SAN ANTONIO SOUTH TO SOUTHERN ATASCOSA COUNTY. RAINFALL RATES OF
  2 TO 2.5 INCHES IN AN HOUR WILL CAUSE FLOODING OF LOW LYING AREA
  AS WELL AS LOW WATER CROSSINGS. DO NOT ATTEMPT TO CROSS FLOODED
  LOW WATER CROSSINGS.

IF YOU ARE IN THESE AREAS... MOVE TO HIGHER GROUND. 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.


TAYLOR/RB

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.

In the hours before

Local storm report, Aug 23, 2:59 PM CDT, 2 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
259 PM CDT SUN AUG 23 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0800 AM    30 NW LEAKEY              TX   FLOODING
08/23/98   REAL                           *** 4 DEAD ***
                                          FOUR DEATHS CONFIRMED BY
                                          REAL SHERIFFS DEPARTEMENT
                                          ON HWY 41.

TAYLOR
Local storm report, Aug 23, 2:59 PM CDT, 2 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
259 PM CDT SUN AUG 23 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0800 AM    30 NW LEAKEY              TX   FLOODING
08/23/98   REAL                           *** 4 DEAD ***
                                          FOUR DEATHS CONFIRMED BY
                                          REAL SHERIFFS DEPARTEMENT
                                          ON HWY 41.

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, 9:10 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

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.