Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 102, NWS Austin/San Antonio, TX

August 23, 1998Blanco County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Aug 23, 1998, 9:32 AM CDT for Blanco 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, 9:32 AM CDT (14:32 UTC)
Expired
Aug 23, 1998, 3:25 PM CDT
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Blanco County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 2.5 hours before the alert went out and 256 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 231433
FFWSAT
TXC031-232025-

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

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

* FLASH FLOOD WARNING FOR...
  BLANCO COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 325 PM CDT

* LOW WATER CROSSINGS ON FARM TO MARKET ROAD 2766 WERE STARTING
  TO FLOOD.

* A FEEDER BAND ASSOCIATED WITH THE REMNANTS OF CHARLIE IS PRODUCING
  RAINS NEAR ONE INCH PER HOUR OVER BLANCO COUNTY.  RADAR ESTIMATES
  THAT RAINS OF 2 TO 3 INCHES HAVE OVER THE SOUTHERN PART OF THE
  COUNTY SO FAR.  RAINS ARE EXPECTED THE NEXT SEVERAL HOURS.
  EXPECT ADDITIONAL LOW WATER CROSSINGS TO FLOOD.

  DO NOT DRIVE THROUGH WATER COVERING THE ROAD.  STAY TUNED FOR
  ADDITIONAL WARNINGS AND STATEMENTS.

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

Special weather statement, Aug 23, 5:15 AM CDT, 4 hours 17 minutes before
TXZ171>173-183>194-202>209-217>225-228-240000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
515 AM CDT SUN AUG 23 1998

...FLASH FLOOD WATCH IN EFFECT FOR TODAY FOR SOUTH CENTRAL TEXAS AND
   THE HILL COUNTRY...

THE REMAINS OF TROPICAL DEPRESSION CHARLEY WERE MOVING SLOWLY WEST OF
UVALDE TO NEAR EAGLE PASS.  NUMEROUS TO WIDESPREAD SHOWERS AND
THUNDERSTORMS CAN BE EXPECTED AGAIN ACROSS SOUTH CENTRAL TEXAS AND
THE HILL COUNTRY TODAY.  RAINFALL RATES IN THE 1 TO 2 INCH PER HOUR
RANGE ARE LIKELY WITH ADDITIONAL TOTALS OF 2 TO 5 INCHES POSSIBLE.
THIS RAINFALL COMBINED WITH THE SATURATED SOILS FROM THE RAINS OF
SATURDAY AND EARLIER WILL LEAD TO ADDITIONAL FLOODING AND FLASH
FLOODING OF RIVERS AND STREAMS....LOW LYING AREAS AND ROADWAYS.

RAINFALL TOTALS FROM SATURDAY THROUGH 5 AM THIS MORNING HAVE
GENERALLY BEEN 2 TO 4 INCHES AREAWIDE WITH WIDELY SCATTERED AMOUNTS
UPWARDS OF 5 TO 6 INCHES.  LIGHTER AMOUNTS WERE NOTED NORTH OF A LINE
FROM LA GRANGE TO AUSTIN TO LLANO.

RESIDENTS OF SOUTH TEXAS SHOULD LISTEN FOR CURRENT FORECASTS AND
FLASH FLOOD ADVISORIES ISSUED BY THE SOUTH TEXAS NATIONAL WEATHER
SERVICE OFFICES UNTIL THE THREAT OF FLOODING HAS SUBSIDED.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE NATIONAL WEATHER
SERVICE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET
WORLD WIDE WEB AT WWW.SRH.NOAA.GOV/EWX OR TUNE TO THE VOICE OF THE
NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO...OPERATING ON A
FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ.

NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE:
SOUTHWEST TEXAS    FROM MIDLAND            LBBSPSMAF...WWUS35 KMAF
CONCHO VALLEY      FROM SAN ANGELO         LBBSPSSJT...WWUS35 KSJT
NORTH TEXAS        FROM FORT WORTH         FTWSPSFTW...WWUS35 KFTW
SOUTHEAST TEXAS    FROM HOUSTON/GALVESTON  SATSPSHOU...WWUS35 KHOU
COASTAL BEND/      FROM CORPUS CHRISTI     SATSPSCRP...WWUS35 KCRP
RIO GRANDE PLAINS

LOCAL INFORMATION FOR THE TEXAS COAST IS AVAILABLE VIA INTERNET
HOMEPAGES FROM SOUTH TEXAS NATIONAL WEATHER SERVICE OFFICES.  THESE
ADDRESSES CAN BE OBTAINED FROM WWW.SRH.NOAA.GOV WHICH IS THE HOMEPAGE
ADDRESS FOR THE NATIONAL WEATHER SERVICE SOUTHERN REGION.
Special weather statement, Aug 23, 5:15 AM CDT, 4 hours 17 minutes before
TXZ171>173-183>194-202>209-217>225-228-240000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
515 AM CDT SUN AUG 23 1998

...FLASH FLOOD WATCH IN EFFECT FOR TODAY FOR SOUTH CENTRAL TEXAS AND
   THE HILL COUNTRY...

THE REMAINS OF TROPICAL DEPRESSION CHARLEY WERE MOVING SLOWLY WEST OF
UVALDE TO NEAR EAGLE PASS.  NUMEROUS TO WIDESPREAD SHOWERS AND
THUNDERSTORMS CAN BE EXPECTED AGAIN ACROSS SOUTH CENTRAL TEXAS AND
THE HILL COUNTRY TODAY.  RAINFALL RATES IN THE 1 TO 2 INCH PER HOUR
RANGE ARE LIKELY WITH ADDITIONAL TOTALS OF 2 TO 5 INCHES POSSIBLE.
THIS RAINFALL COMBINED WITH THE SATURATED SOILS FROM THE RAINS OF
SATURDAY AND EARLIER WILL LEAD TO ADDITIONAL FLOODING AND FLASH
FLOODING OF RIVERS AND STREAMS....LOW LYING AREAS AND ROADWAYS.

RAINFALL TOTALS FROM SATURDAY THROUGH 5 AM THIS MORNING HAVE
GENERALLY BEEN 2 TO 4 INCHES AREAWIDE WITH WIDELY SCATTERED AMOUNTS
UPWARDS OF 5 TO 6 INCHES.  LIGHTER AMOUNTS WERE NOTED NORTH OF A LINE
FROM LA GRANGE TO AUSTIN TO LLANO.

RESIDENTS OF SOUTH TEXAS SHOULD LISTEN FOR CURRENT FORECASTS AND
FLASH FLOOD ADVISORIES ISSUED BY THE SOUTH TEXAS NATIONAL WEATHER
SERVICE OFFICES UNTIL THE THREAT OF FLOODING HAS SUBSIDED.

THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF
THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND
ADVISORIES.  THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED
ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED
HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.

ADDITIONAL WEATHER INFORMATION IS AVAILABLE ON THE NATIONAL WEATHER
SERVICE CENTRAL AND SOUTH CENTRAL TEXAS HOME PAGE OF THE INTERNET
WORLD WIDE WEB AT WWW.SRH.NOAA.GOV/EWX OR TUNE TO THE VOICE OF THE
NATIONAL WEATHER SERVICE...NOAA WEATHER RADIO...OPERATING ON A
FREQUENCY BETWEEN 162.400 MHZ AND 162.550 MHZ.

NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE:
SOUTHWEST TEXAS    FROM MIDLAND            LBBSPSMAF...WWUS35 KMAF
CONCHO VALLEY      FROM SAN ANGELO         LBBSPSSJT...WWUS35 KSJT
NORTH TEXAS        FROM FORT WORTH         FTWSPSFTW...WWUS35 KFTW
SOUTHEAST TEXAS    FROM HOUSTON/GALVESTON  SATSPSHOU...WWUS35 KHOU
COASTAL BEND/      FROM CORPUS CHRISTI     SATSPSCRP...WWUS35 KCRP
RIO GRANDE PLAINS

LOCAL INFORMATION FOR THE TEXAS COAST IS AVAILABLE VIA INTERNET
HOMEPAGES FROM SOUTH TEXAS NATIONAL WEATHER SERVICE OFFICES.  THESE
ADDRESSES CAN BE OBTAINED FROM WWW.SRH.NOAA.GOV WHICH IS THE HOMEPAGE
ADDRESS FOR THE NATIONAL WEATHER SERVICE SOUTHERN REGION.

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, 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.