Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 210, NWS Austin/San Antonio, TX

June 22, 1997Llano County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 22, 1997, 9:35 PM CDT for Llano 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 22, 1997, 9:35 PM CDT (02:35 UTC)
Expired: Jun 23, 1997, 12:30 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Llano County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 2.6 hours before the alert went out and 255 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3583 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 78 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 230234
FFWSAT
TXC299-230530-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
935 PM CDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1230 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...LLANO COUNTY
 
SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN CONTINUED FROM JUNCTION TO
MASON TO LLANO MOVING SLOWLY TOWARD THE NORTH. WITH CONTINUED
REDEVELOPMENT OF STORMS TO THE SOUTHWEST AND TRACKING ACROSS LLANO
COUNTY...HEAVY RAINFALL RATES OF 1 TO 2 INCH PER HOUR OVER THE NEXT FEW
HOURS WILL RESULT IN ADDITIONAL RAINFALL AMOUNTS OVER 3 TO 5 INCHES
POSSIBLE OVER PARTS OF LLANO 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.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS RWHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS AND OTHER
PEOPLE IN RECREATION AREAS ALONG CREEKS...STREAMS...AND RIVERS IN
THE WARNING AREA SHOULD MOVE TO HIGH GROUND IMMEDIATELY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 7:04 PM CDT	Flash Flood Warning	EWX	Bandera, Bexar, Kendall, Kerr, Medina	3 hr
Jun 22, 7:04 PM CDT	Flash Flood Warning	EWX	Blanco, Burnet, Comal, Gillespie, Llano	3 hr
Jun 22, 10:12 PM CDT	Flash Flood Warning	EWX	Edwards	3 hr

Nearby

Flash Flood Warnings in Texas, 1997 Every 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.