Alert archive / Texas / Flash Flood Warnings in 1991

Flash Flood Warning 63, NWS Austin/San Antonio, TX

December 20, 1991Burnet County, Lampasas County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Dec 20, 1991, 4:18 AM CST for Burnet County, Lampasas County, Texas. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Dec 20, 1991, 4:18 AM CST (10:18 UTC)
Expired
Dec 20, 1991, 8:15 AM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Burnet County, TX, Lampasas County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 10.3 hours before the alert went out and 137 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 1991-12-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Stephenville/Cla, TX at 00:00Z on 1991-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 722 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
550 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
722 m²/s²
0-3 km storm-relative helicity
989 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 KAUS 201019
FFWAUS
TXC281-053-171-299-201415-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
418 AM CST FRI DEC 20 1991
 
THE NATIONAL WEATHER SERVICE IN AUSTIN HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  815 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL TEXAS
 
   ...LAMPASAS COUNTY
 
IN SOUTH CENTRAL TEXAS
 
   ...BURNET COUNTY...GILLESPIE COUNTY...LLANO COUNTY
 
AT 410 AM...A LOCAL SPOTTER REPORTED VERY HEAVY RAINS IN GILLESPIE
COUNTY AT FREDERICKSBURG. UNOFFICAL ACCUMULATIONS OF 4 TO 7 INCHES
HAVE OCCURRED DURING THE NIGHTTIME HOURS.
 
RADAR SHOWS A LARGE SWATH OF MODERATE TO HEAVY RAINS STREAMING SOUTH
TO NORTH AT 30 MPH OVER THE PREVIOUSLY MENTIONED COUNTIES.
 
AN ADDITIONAL 3 TO 5 INCHES OF RAIN IS LIKELY TODAY AND THE RAINS
MAY CONTINUE THROUGH THE NIGHT.
 
KEEP UP WITH LATER FORECASTS AND LISTEN FOR ADDITIONAL STATEMENTS
OR WARNINGS.
 
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.

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 19, 6:03 PM CSTFlash Flood WarningEWXBexar, Comal3 hr
Dec 19, 8:29 PM CSTFlash Flood WarningEWXBandera, Kendall, Kerr10 hr
Dec 19, 8:52 PM CSTFlash Flood WarningEWXBexar3 hr
Dec 19, 10:54 PM CSTFlash Flood WarningEWXEdwards, Real7 hr
Dec 19, 11:56 PM CSTFlash Flood WarningEWXKinney, Uvalde7 hr
Dec 20, 3:05 AM CSTFlash Flood WarningEWXBexar, Medina6 hr
Dec 20, 4:18 AM CSTFlash Flood WarningEWXGillespie, Llano4 hr
Dec 20, 6:17 AM CSTFlash Flood WarningEWXBandera, Kendall, Kerr3 hr
Dec 20, 7:50 AM CSTFlash Flood WarningEWXBurnet, Lampasas, Llano, Mills, San Saba2 hr
Dec 20, 7:50 AM CSTFlash Flood WarningEWXGillespie2 hr
Dec 20, 8:43 AM CSTFlash Flood WarningEWXBandera, Bexar, Medina5 hr
Dec 20, 8:43 AM CSTFlash Flood WarningEWXKendall, Kerr5 hr
Dec 20, 10:01 AM CSTFlash Flood WarningEWXBurnet, Lampasas, Mills, San Saba4 hr
Dec 20, 10:01 AM CSTFlash Flood WarningEWXGillespie, Llano4 hr
Dec 20, 1:48 PM CSTFlash Flood WarningEWXBandera, Kendall, Kerr6 hr
Dec 20, 4:52 PM CSTFlash Flood WarningEWXHays, Travis3 hr
Dec 20, 4:52 PM CSTFlash Flood WarningEWXWilliamson3 hr
Dec 20, 5:54 PM CSTFlash Flood WarningEWXGillespie2 hr
Dec 20, 5:54 PM CSTFlash Flood WarningEWXLampasas, Mills2 hr

Nearby

Flash Flood Warnings in Texas, 1991Every flash flood warning in 1991

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.