Alert archive / Texas / Flash Flood Warnings in 1996

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

October 27, 1996Llano County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Oct 27, 1996, 11:06 PM CST for Llano County, Texas. It was in force for 4 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
Oct 27, 1996, 11:06 PM CST (05:06 UTC)
Expired
Oct 28, 1996, 3:00 AM CST
In force
4 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Llano County, TX

The radar

The Ft Hood radar (KGRK), 124 km from the middle of the area, began a volume at 05:10 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, 5.1 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 1996-10-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1812 joules per kilogram.LCLEL10008507005003002001001 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, Del Rio, TX at 00:00Z on 1996-10-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
1812 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
981 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 280508
FFWSAT
TXC299-280900-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1106 PM CST SUN OCT 27 1996
 
THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  300 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL TEXAS
 
   ...LLANO COUNTY
 
AT 1102 PM...NEXRAD DOPPLER RADAR SHOWED AN AREA OF HEAVY RAIN MOVING
INTO SOUTHERN LLANO COUNTY...IN A FALL TROPICAL ENVIRONMENT THAT
FAVORS HEAVY RAINS.  RAIN WILL CONTINUE TO DEVELOP OVER LLANO
COUNTY FOR THE NEXT FEW HOURS...WITH HEAVY RAIN LIKELY.
 
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.
 
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 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.
 
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.

IssuedProductOfficeCountiesLasted
Oct 27, 6:28 PM CSTFlash Flood WarningEWXGillespie, Kerr2 hr
Oct 27, 7:25 PM CSTFlash Flood WarningEWXBlanco4 hr
Oct 27, 7:58 PM CSTFlash Flood WarningEWXGillespie, Kendall, Kerr3 hr
Oct 27, 8:25 PM CSTFlash Flood WarningEWXBlanco3 hr
Oct 27, 8:25 PM CSTFlash Flood WarningEWXBandera4 hr
Oct 27, 9:11 PM CSTFlash Flood WarningEWXBurnet3 hr
Oct 27, 9:41 PM CSTFlash Flood WarningEWXBlanco, Burnet, Gillespie, Kendall5 hr
Oct 27, 9:41 PM CSTFlash Flood WarningEWXBandera, Kerr5 hr
Oct 28, 1:04 AM CSTFlash Flood WarningEWXEdwards, Real4 hr
Oct 28, 5:09 AM CSTFlash Flood WarningEWXKinney2 hr
Oct 28, 5:29 AM CSTFlash Flood WarningEWXEdwards, Kerr, Real3 hr
Oct 28, 7:57 AM CSTFlash Flood WarningEWXGillespie3 hr
Oct 28, 8:17 AM CSTFlash Flood WarningEWXBandera, Kerr, Real, Uvalde4 hr
Oct 28, 8:36 AM CSTFlash Flood WarningEWXGillespie4 hr

Nearby

Flash Flood Warnings in Texas, 1996Every flash flood warning in 1996

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.