Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 111, NWS Austin/San Antonio, TX

June 8, 1997Comal County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 8, 1997, 11:45 PM CDT for Comal 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
Jun 8, 1997, 11:45 PM CDT (04:45 UTC)
Expired
Jun 9, 1997, 2:45 AM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Comal County, TX

The radar

The Austin/San Antonio radar (KEWX), 27 km from the middle of the area, began a volume at 04:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 4.8 hours before the alert went out and 248 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 00:00Z on 1997-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1633 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, Corpus Christi, TX at 00:00Z on 1997-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 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
1633 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
817 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 090445
FFWSAT
TXC091-453-491-090745-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1145 PM CDT SUN JUN 8 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  245 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...COMAL COUNTY...TRAVIS COUNTY...WILLIAMSON COUNTY
 
AT 1140 PM CDT STRONG THUNDERSTORMS WITH VERY HEAVY RAIN STRETCHED FROM
NORTHERN BEXAR NORTHEAST TO TEMPLE. RAINFALL RATES ESTIMATED BY DOPPLER
RADAR OF BETWEEN 1 AND 3 INCHES AN HOUR HAVE FALLEN IN THIS AREA AND
BECAUSE THE STORMS AREA TRAINING TO THE NORTHEAST ACROSS THIS AREA MORE
RAIN IS LIKELY.
 
THESE STORMS MAY ALSO PRODUCE GUSTY WINDS AND POSSIBLE SMALL HAIL.
 
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
Jun 8, 7:34 PM CDTSevere Thunderstorm WarningEWXVal Verde116 min
Jun 8, 8:49 PM CDTTornado WarningEWXVal Verde56 min
Jun 8, 9:10 PM CDTSevere Thunderstorm WarningEWXLlano35 min
Jun 8, 9:26 PM CDTTornado WarningEWXVal Verde64 min
Jun 8, 10:06 PM CDTTornado WarningEWXEdwards69 min
Jun 8, 11:09 PM CDTFlash Flood WarningEWXBlanco3 hr
Jun 8, 11:33 PM CDTFlash Flood WarningEWXHays3 hr
Jun 8, 11:45 PM CDTFlash Flood WarningEWXTravis, Williamson3 hr
Jun 9, 12:26 AM CDTFlash Flood WarningEWXBexar3 hr
Jun 9, 12:38 AM CDTFlash Flood WarningEWXVal Verde3 hr
Jun 9, 12:45 AM CDTFlash Flood WarningEWXBurnet4 hr
Jun 9, 2:23 AM CDTFlash Flood WarningEWXHays3 hr
Jun 9, 2:39 AM CDTFlash Flood WarningEWXComal3 hr
Jun 9, 2:39 AM CDTFlash Flood WarningEWXTravis, Williamson3 hr
Jun 9, 5:08 AM CDTFlash Flood WarningEWXHays, Travis, Williamson4 hr
Jun 9, 5:08 AM CDTFlash Flood WarningEWXComal4 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; radar from the NEXRAD Level II archive.