Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 56, NWS Austin/San Antonio, TX

May 19, 1997Maverick County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 19, 1997, 8:57 PM CDT for Maverick County, Texas. It was in force for 2 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
May 19, 1997, 8:57 PM CDT (01:57 UTC)
Expired
May 19, 1997, 11:00 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Maverick County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.0 hours before the alert went out and 86 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 1997-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3137 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 1997-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
3137 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1330 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSAT 200156
FFWSAT
TXC323-200400-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
857 PM CDT MON MAY 19 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...MAVERICK COUNTY
 
DOPPLER RADAR IS INDICATED TWO THUNDERSTORMS PRODUCING OVER 2 INCHES AN
HOUR OF RAINFALL FROM QUEMADO TO EL INDIO. THESE STORMS HAVE SHOWN
LITTLE MOVMENT OVER THE PAST HOURS AND RAINFALL INTENSITY HAS INCREASED.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT8 TO
CROSS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT TO ESCAPE
RISING WATER DURING THREATENING RAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 7:43 PM CDTSevere Thunderstorm WarningEWXMaverick62 min
May 19, 8:15 PM CDTSevere Thunderstorm WarningEWXKerr45 min
May 19, 8:20 PM CDTSevere Thunderstorm WarningEWXDimmit, Zavala55 min
May 19, 8:31 PM CDTSevere Thunderstorm WarningEWXKinney59 min
May 19, 8:33 PM CDTSevere Thunderstorm WarningEWXGillespie57 min
May 19, 9:11 PM CDTFlash Flood WarningEWXGillespie, Kerr3 hr
May 19, 9:38 PM CDTFlash Flood WarningEWXBandera2 hr
May 19, 10:04 PM CDTFlash Flood WarningEWXBlanco, Kendall116 min
May 19, 10:33 PM CDTFlash Flood WarningEWXMedina, Uvalde3 hr
May 19, 11:05 PM CDTSevere Thunderstorm WarningEWXFrio55 min

Nearby

Flash Flood Warnings in Texas, 1997Every flash flood warning in 1997

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.