Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 7, NWS Austin/San Antonio, TX

February 20, 1997Kerr County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Feb 20, 1997, 8:51 AM CST for Kerr County, Texas. It was in force for 4 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
Feb 20, 1997, 8:51 AM CST (14:51 UTC)
Expired
Feb 20, 1997, 1:00 PM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Kerr County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 2.9 hours before the alert went out and 163 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 1997-02-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 12:00Z on 1997-02-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -60 square meters per square second.19395878Sfc1 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
5 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
-60 m²/s²
0-3 km storm-relative helicity
-27 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 201455
FFWSAT
TXC265-201900-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
851 AM CST THU FEB 20 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 19, 9:10 PM CSTFlash Flood WarningEWXVal Verde3 hr
Feb 19, 9:51 PM CSTSevere Thunderstorm WarningEWXVal Verde69 min
Feb 19, 11:46 PM CSTFlash Flood WarningEWXVal Verde4 hr
Feb 20, 3:07 AM CSTFlash Flood WarningEWXGillespie4 hr
Feb 20, 3:49 AM CSTFlash Flood WarningEWXVal Verde116 min
Feb 20, 7:07 AM CSTFlash Flood WarningEWXGillespie3 hr
Feb 20, 7:22 AM CSTFlash Flood WarningEWXReal3 hr
Feb 20, 9:53 AM CSTFlash Flood WarningEWXGillespie, Llano4 hr

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.