Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 10, NWS Austin/San Antonio, TX

January 31, 1998Bandera County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jan 31, 1998, 5:02 AM CST for Bandera 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
Jan 31, 1998, 5:02 AM CST (11:02 UTC)
Expired
Jan 31, 1998, 8:00 AM CST
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Bandera County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 11.0 hours before the alert went out and 160 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 1998-01-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 698 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 1998-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897117136Sfc1 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
698 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1128 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
189 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 311103
FFWSAT
TXC019-311400-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
502 AM CST SAT JAN 31 1998
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...EASTERN BANDERA COUNTY
 
AT 500 AM CST THUNDERSTORMS HAD RELEASED HEAVY AMOUNTS OF RAINFALL.
DOPPLER RADAR HAD ESTIMATED 3 TO 4 INCHES OF RAIN HAD FALLEN OVER
EASTERN BANDERA COUNTY SINCE 330 AM. THESE THUNDERSTORMS WERE MOVING
TO THE NORTHEAST AT 15 MPH.  ADDITIONAL STORMS WERE FORMING OVER
NORTHERN MEDINA COUNTY AND MOVING INTO BANDERA COUNTY.
 
CAMPERS IN JELLYSTONE PARK SHOULD MONITOR THE NEWS AND NOAA WEATHER
RADIO FOR DEVELOPING RAINFALL AND FLOOD FORECASTS.  IF SERIOUS
FLOODING DEVELOPES...RV CAMPERS SHOULD BE PREPARED TO MOVE AS
EMERGENCY OFFICIALS ADVISE.
 
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 HIGHER GROUND TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 31, 6:08 AM CSTSevere Thunderstorm WarningEWXEdwards67 min
Jan 31, 6:20 AM CSTSevere Thunderstorm WarningEWXReal, Uvalde55 min
Jan 31, 7:26 AM CSTFlash Flood WarningEWXUvalde4 hr
Jan 31, 10:33 AM CSTFlash Flood WarningEWXBexar117 min

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.