Alert archive / Texas / Flash Flood Warnings in 1993

Flash Flood Warning 18, NWS Austin/San Antonio, TX

June 21, 1993Travis County, Williamson County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1993, 8:44 PM CDT for Travis County, Williamson County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 21, 1993, 8:44 PM CDT (01:44 UTC)
Expired
Jun 21, 1993, 10:45 PM CDT
In force
2 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Travis County, TX, Williamson County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 1.7 hours before the alert went out and 196 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, Stephenville/Cla, TX at 00:00Z on 1993-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1068 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Stephenville/Cla, TX at 00:00Z on 1993-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
1068 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
948 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 220149
FFWAUS
TXC453-491-220345-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
844 PM CDT MON JUN 21 1993
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL TEXAS
 
   ...NORTHWESTERN TRAVIS COUNTY...SOUTHERN WILLIAMSON COUNTY
 
AT 825 PM...SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WERE FROM 25 MI
NORTHWEST OF AUSTIN TO GEORGETOWN. RAINFALL REPORTS FROM OBSERVERS IN
THORNDALE AND GEORGETOWN REPORTED ACCUMULATIONS OF UP TO 3 INCHES IN ONE
HOUR AT 830 PM WITH HEAVY RAIN CONTINUING. THIS AREA OF RAIN WAS MOVING
SOUTH AT 5 MILES PER HOUR.
 
MOTORISTS ARE URGED NOT TO CROSS FLOODED WATERWAYS AND CHILDREN SHOULD
BE KEPT FROM STREAMS OR OTHER FLOOD-PRONE AREAS.
 
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 ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN HIGH WATERS SHOULD BE ABANDONED
QUICKLY...THEN GET TO HIGHER GROUND.
WT
 
 
&

Nearby

Flash Flood Warnings in Texas, 1993Every flash flood warning in 1993

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.