Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 151, NWS Austin/San Antonio, TX

June 21, 1997Bastrop County, Fayette County, Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1997, 11:16 AM CDT for Bastrop County, Fayette County, Lavaca 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 21, 1997, 11:16 AM CDT (16:16 UTC)
Expired
Jun 21, 1997, 2:15 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Bastrop County, TX, Fayette County, TX, Lavaca County, TX

The radar

The Austin/San Antonio radar (KEWX), 95 km from the middle of the area, began a volume at 16:16 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, 4.3 hours before the alert went out and 231 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 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3868 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
3868 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
570 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 211616
FFWSAT
TXC021-031-091-149-209-259-285-453-211915-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1116 AM CDT SAT JUN 21 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
 
   ...BASTROP COUNTY...BLANCO COUNTY...COMAL COUNTY
   ...FAYETTE COUNTY...HAYS COUNTY...KENDALL COUNTY...LAVACA COUNTY
   ...TRAVIS COUNTY
 
AT 1110 AM RADAR INDICATED WIDESPREAD RAIN WITH EMBEDDED
HEAVY THUNDERSTORMS OVER MUCH OF SOUTH CENTRAL TEXAS. NUMEROUS
REPORTS OF ROAD CLOSURES OR ROADS DECLARED IMPASSABLE HAVE BEEN
RECEIVED. IN KENDALL COUNTY..RADAR INDICATED NEAR 2 INCHES OF RAIN HAS
FALLEN WITH MORE HEAVY RAIN EXPECTED.
 
ACROSS COMAL..HAYS..BASTROP AND BLANCO COUNTIES RADAR INDICATED 1
TO 2 INCHES OF RAIN HAS FALLEN WITH MORE STORMS PRODUCING 1 INCH
PER HOUR RAINFALL MOVING TOWARD THE AREA.
 
ACROSS OTHER AREAS..INCLUDING AUSTIN...LAVACA AND FAYETTE
COUNTIES THUNDERSTORMS PRODUCING HEAVY RAINS OF 1 TO 2 INCHES PER
HOUR AND FLOODING WILL EFFECT THE AREA LATER THIS MORNING INTO
THIS AFTERNOON.
 
 
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.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST PFLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT 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
Jun 20, 7:51 PM CDTSevere Thunderstorm WarningEWXVal Verde69 min
Jun 20, 8:57 PM CDTSevere Thunderstorm WarningEWXVal Verde63 min
Jun 21, 1:51 AM CDTFlash Flood WarningEWXKerr3 hr
Jun 21, 6:01 AM CDTFlash Flood WarningEWXFrio3 hr
Jun 21, 7:30 AM CDTFlash Flood WarningEWXAtascosa3 hr
Jun 21, 7:45 AM CDTFlash Flood WarningEWXBexar3 hr
Jun 21, 9:01 AM CDTFlash Flood WarningEWXFrio119 min
Jun 21, 9:33 AM CDTFlash Flood WarningEWXGonzales, Guadalupe, Wilson3 hr
Jun 21, 10:25 AM CDTFlash Flood WarningEWXDeWitt, Karnes3 hr
Jun 21, 10:39 AM CDTFlash Flood WarningEWXBandera, Medina3 hr
Jun 21, 10:59 AM CDTFlash Flood WarningEWXCaldwell3 hr
Jun 21, 11:16 AM CDTFlash Flood WarningEWXBlanco, Comal, Hays, Travis3 hr
Jun 21, 11:16 AM CDTFlash Flood WarningEWXKendall3 hr
Jun 21, 11:38 AM CDTFlash Flood WarningEWXBandera, Bexar3 hr
Jun 21, 12:08 PM CDTFlash Flood WarningEWXLee, Williamson3 hr
Jun 21, 1:25 PM CDTFlash Flood WarningEWXGuadalupe3 hr
Jun 21, 1:25 PM CDTFlash Flood WarningEWXGillespie3 hr
Jun 21, 1:25 PM CDTFlash Flood WarningEWXDeWitt3 hr
Jun 21, 1:25 PM CDTFlash Flood WarningEWXBandera3 hr
Jun 21, 2:07 PM CDTFlash Flood WarningEWXKendall, Kerr3 hr
Jun 21, 2:07 PM CDTFlash Flood WarningEWXLavaca3 hr
Jun 21, 3:20 PM CDTFlash Flood WarningEWXBexar, Medina3 hr
Jun 21, 3:20 PM CDTFlash Flood WarningEWXComal3 hr
Jun 21, 3:36 PM CDTFlash Flood WarningEWXKarnes3 hr
Jun 21, 4:39 PM CDTFlash Flood WarningEWXGuadalupe6 hr
Jun 21, 4:39 PM CDTFlash Flood WarningEWXBandera6 hr
Jun 21, 4:39 PM CDTFlash Flood WarningEWXDeWitt6 hr
Jun 21, 5:09 PM CDTFlash Flood WarningEWXCaldwell, Travis6 hr
Jun 21, 5:17 PM CDTFlash Flood WarningEWXBandera6 hr
Jun 21, 5:17 PM CDTFlash Flood WarningEWXLavaca6 hr
Jun 21, 5:42 PM CDTFlash Flood WarningEWXHays6 hr
Jun 21, 6:16 PM CDTFlash Flood WarningEWXBexar, Comal3 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.