Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 108, NWS Austin/San Antonio, TX

June 7, 1997Caldwell County, Hays County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 7, 1997, 12:07 PM CDT for Caldwell County, Hays 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
Jun 7, 1997, 12:07 PM CDT (17:07 UTC)
Expired
Jun 7, 1997, 2:15 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Caldwell County, TX, Hays County, TX

The radar

The Austin/San Antonio radar (KEWX), 33 km from the middle of the area, began a volume at 17:09 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 12:00Z, 5.1 hours before the alert went out and 251 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 12:00Z on 1997-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1148 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, Corpus Christi, TX at 12:00Z on 1997-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
1148 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
703 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
32 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 071709
FFWSAT
TXC055-209-071915-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1207 PM CDT SAT JUN 7 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  215 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...CALDWELL COUNTY...EASTERN HAYS COUNTY
 
AT 12 NOON RADAR CONTINUED TO INDICATE A BAND OF SHOWERS WITH
MODERATE TO OCCASIONALLY HEAVY RAIN EXTENDING FROM BUDA IN HAYS
COUNTY TO LOCKHART TO FLATONIA TO HALLETTSVILLE.  THE BAND OF
SHOWERS WAS MOVING SLOWLY TO THE NORTH.  RADAR INDICATED RAINFALL
RATES OF 1\2 TO 1 INCH PER HOUR OVER EASTERN HAYS COUNTY.
PARTS OF HAYS AND CALDWELL COUNTIES HAVE RECEIVED 3 TO 5 INCHES
OF RAIN SINCE YESTERDAY SO ADDITIONAL RAINFALL WILL INCREASE
THE FLOODING PROBLEMS IN HAYS AND CALDWELL COUNTIES.  COUNTY
OFFICIALS IN CALDWELL COUNTY REPORT NUMEROUS ROADS ARE CLOSED
OR IlMPASSABLE.
 
 
AVOID ALREADY FLOODED AREAS.  TRAVELERS SHOULD NOT ATTEMPT TO
CROSS FLOODED ROADS.  IF YOUR VEHICLE STALLS...LEAVE IT AND MOVE
IMMEDIATELY TO HIGHER GROUND IF YOU CAN DO SO SAFELY.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 7:03 PM CDTFlash Flood WarningEWXAtascosa117 min
Jun 6, 8:29 PM CDTFlash Flood WarningEWXDeWitt, Karnes2 hr
Jun 6, 8:29 PM CDTFlash Flood WarningEWXLavaca2 hr
Jun 6, 8:41 PM CDTFlash Flood WarningEWXFayette2 hr
Jun 7, 8:55 AM CDTFlash Flood WarningEWXCaldwell, Hays3 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.