Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 187, NWS Austin/San Antonio, TX

June 22, 1997Uvalde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 22, 1997, 2:57 AM CDT for Uvalde County, Texas. It was in force for 6 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 22, 1997, 2:57 AM CDT (07:57 UTC)
Expired
Jun 22, 1997, 9:00 AM CDT
In force
6 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Uvalde County, TX

The radar

The Laughlin AFB radar (KDFX), 51 km from the middle of the area, began a volume at 08:01 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

Del Rio, TX (KDRT), launched 00:00Z, 8.0 hours before the alert went out and 104 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 1997-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2985 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 1997-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
2985 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
3.2
Supercell composite
18.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 220756
FFWSAT
TXC463-221400-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
257 AM CDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  900 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...UVALDE COUNTY
 
A LINE OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WAS MOVING SOUTHWARD
THROUGH NORTHERN UVALDE COUNTY AND WILL CONTINUE SOUTHWARD ACROSS THE
COUNTRY. THESE STORMS WERE PRODUCING 1 TO 2 INCHES OF RAIN PER HOUR OVER
ALREADY SATURATED SOIL WITH RAINFALL TOTALS OF 3 TO 5 INCHES POSSIBLE
OVER THE NEXT FEW HOURS. TRAVEL IS NOT RECOMMENDED UNLESS MOVING TO
HIGHER GROUND. THIS LINE OF STORMS HAS ALREADY RESULTED IN MAJOR
FLOODING IN REAL COUNTY.
 
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.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
MOST FLASH 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.
 
FLOOD PRONE URBAN AREAS FILL WITH WATER QUICKLY.  CLOGGED STORM
DpRAINS MAY CAUSE OTHER AREAS TO FLOOD.  DO NOT DRIVE THROUGH
FLOOD WATERS AND STAY AWAY FROM STORM DRAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:30 PM CDTFlash Flood WarningEWXKendall60 min
Jun 21, 7:30 PM CDTSevere Thunderstorm WarningEWXKendall60 min
Jun 21, 8:41 PM CDTFlash Flood WarningEWXBlanco, Kendall4 hr
Jun 21, 8:41 PM CDTFlash Flood WarningEWXKerr4 hr
Jun 21, 9:25 PM CDTFlash Flood WarningEWXComal3 hr
Jun 21, 10:15 PM CDTFlash Flood WarningEWXGillespie4 hr
Jun 22, 12:03 AM CDTFlash Flood WarningEWXEdwards, Real4 hr
Jun 22, 12:03 AM CDTFlash Flood WarningEWXBandera4 hr
Jun 22, 12:38 AM CDTFlash Flood WarningEWXKendall, Kerr7 hr
Jun 22, 2:15 AM CDTFlash Flood WarningEWXBastrop, Burnet, Travis, Williamson6 hr
Jun 22, 2:15 AM CDTFlash Flood WarningEWXEdwards, Real6 hr
Jun 22, 2:15 AM CDTFlash Flood WarningEWXBexar, Medina6 hr
Jun 22, 2:15 AM CDTFlash Flood WarningEWXBlanco6 hr
Jun 22, 3:28 AM CDTFlash Flood WarningEWXBandera5 hr
Jun 22, 3:28 AM CDTFlash Flood WarningEWXComal5 hr
Jun 22, 3:28 AM CDTFlash Flood WarningEWXGillespie5 hr
Jun 22, 7:36 AM CDTFlash Flood WarningEWXBandera, Edwards, Medina, Real, Uvalde4 hr
Jun 22, 7:36 AM CDTFlash Flood WarningEWXBexar, Comal, Kendall4 hr
Jun 22, 7:36 AM CDTFlash Flood WarningEWXGillespie, Kerr4 hr
Jun 22, 7:36 AM CDTFlash Flood WarningEWXBlanco, Llano4 hr
Jun 22, 8:04 AM CDTFlash Flood WarningEWXHays4 hr
Jun 22, 8:04 AM CDTFlash Flood WarningEWXBurnet4 hr
Jun 22, 8:47 AM CDTFlash Flood WarningEWXTravis, Williamson3 hr
Jun 22, 11:15 AM CDTFlash Flood WarningEWXBandera, Bexar, Medina, Uvalde5 hr
Jun 22, 11:15 AM CDTFlash Flood WarningEWXBlanco, Gillespie, Kendall, Kerr, Llano5 hr
Jun 22, 11:15 AM CDTFlash Flood WarningEWXComal, Hays5 hr
Jun 22, 11:15 AM CDTFlash Flood WarningEWXBurnet5 hr
Jun 22, 11:15 AM CDTFlash Flood WarningEWXEdwards, Real5 hr
Jun 22, 11:20 AM CDTFlash Flood WarningEWXTravis, Williamson5 hr
Jun 22, 12:07 PM CDTFlash Flood WarningEWXGuadalupe4 hr
Jun 22, 3:58 PM CDTFlash Flood WarningEWXBandera, Bexar, Medina3 hr
Jun 22, 3:58 PM CDTFlash Flood WarningEWXBlanco, Comal, Gillespie, Kendall, Kerr3 hr
Jun 22, 3:58 PM CDTFlash Flood WarningEWXGuadalupe, 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.