Alert archive / Texas / Flash Flood Warnings in 1986

Flash Flood Warning 11, NWS Austin/San Antonio, TX

May 17, 1986Burnet County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at May 17, 1986, 1:59 PM CDT for Burnet County, Texas. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 17, 1986, 1:59 PM CDT (18:59 UTC)
Expired
May 17, 1986, 5:00 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Burnet County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 12:00Z, 7.0 hours before the alert went out and 159 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 12:00Z on 1986-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2509 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 1986-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 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
2509 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
611 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
1.5
Supercell composite
10.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 171859
FFWAUS
TXC021-031-287-053-453-209-491-172200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
159 PM CDT SAT MAY 17 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

TEXAS...BASTROP...BLANCO...LEE...BURNET...TRAVIS...HAYS AND 
 WILLIAMSON

AT 155 PM CDT A VERY HEAVY RAINS WERE INDICATED BY RADAR IN TRAVIS
AND SURROUNDING COUNTIES.  SEVERAL OF THESE STORMS HAVE PRODUCED
RAINFALLS OF TWO INCHES PER HOUR OR MORE.

REMEMBER THAT DEATHS DURING FLASH FLOODING ARE OFTEN RELATED TO
MOTORISTS DRIVING THROUGH FLOODED LOW WATER CROSSINGS.

IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY AND YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER
SERVICE OFFICE.

PLEASE LISTEN TO YOUR LOCsAL RADIO..TV..OR NOAA WEATHER RADIO FOR
LATER STATEMENTS REGARDING THIS HEAVY RAIN EPISODE.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 17, 1:14 PM CDT, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
115 PM CDT SAT MAY 17 1986

...SEVERE WEATHER POTENTIAL EXISTS FOR SOUTH TEXAS...

DUE TO THE NUMEROUS OUTDOOR ACTIVITIES TAKING PLACE ACROSS SOUTH TEXAS
THIS SATURDAY AFTERNOON AND EVENING..SUCH AS THE SWC BASEBALL TOURNAMENT
IN COLLEGE STATION..THE SWC TRACK & FIELD MEET IN HOUSTON..AND THE STATE
HIGH SCHOOL TRACK & FIELD MEET IN AUSTIN..AMONG OTHERS..THE NATIONAL
WEATHER SERVICE WOULD LIKE TO ALERT ALL WHO PLAN TO ATTEND ANY OF THESE
EVENTS THAT THE POTENTIAL EXISTS FOR SEVERE WEATHER.

A TORNADO WATCH EXISTS FOR A LARGE PORTION OF SOUTH AND SOUTHEAST TEXAS
UNTIL 7 PM CDT THIS EVENING..AND MAY BE EXTENDED FURTHER INTO THE NIGHT-
TIME HOURS.  THE METROPOLITAN AREAS OF AUSTIN..SAN ANTONIO..HOUSTON AND
BRYAN-COLLEGE STATION ARE INCLUDED IN THE WATCH.

SEVERE WEATHER IN THE FORM OF TORNADOES..LARGE HAIL..FREQUENT LIGHTNING
AND DAMAGING WINDS HAVE ALREADY BEEN REPORTED IN SOME OF THE STORMS NOW
APPROACHING AUSTIN AND WACO.  THUNDERSTORMS ARE ABOUT AN HOUR AWAY FROM
BRYAN-COLLEGE STATION.

PERSONS SHOULD LISTEN TO LOCAL RADIO..TV OR NOAA WEATHER RADIO STATIONS
FOR THE LATEST WARNINGS..FORECASTS AND B:ULLETINS CONCERNING THIS SEVERE
WEATHER EVENT AND BE PREPARED TO MOVE TO A PLACE OF SAFETY ON SHORT
NOTICE.

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 8:01 PM CDTSevere Thunderstorm WarningEWXDimmit59 min
May 16, 8:20 PM CDTSevere Thunderstorm WarningEWXLa Salle60 min
May 17, 9:29 AM CDTSevere Thunderstorm WarningEWXLampasas, Mills, San Saba61 min
May 17, 11:24 AM CDTTornado WarningEWXBurnet, Williamson66 min
May 17, 11:39 AM CDTSevere Thunderstorm WarningEWXLlano66 min
May 17, 11:58 AM CDTSevere Thunderstorm WarningEWXBurnet, Lampasas, San Saba62 min
May 17, 11:58 AM CDTSevere Thunderstorm WarningEWXLlano62 min
May 17, 12:21 PM CDTTornado WarningEWXBlanco, Burnet, Llano69 min
May 17, 12:49 PM CDTSevere Thunderstorm WarningEWXComal56 min
May 17, 12:52 PM CDTTornado WarningEWXTravis68 min
May 17, 1:09 PM CDTSevere Thunderstorm WarningEWXWilliamson66 min
May 17, 1:23 PM CDTSevere Thunderstorm WarningEWXHays67 min
May 17, 1:39 PM CDTSevere Thunderstorm WarningEWXBastrop, Lee66 min
May 17, 1:59 PM CDTFlash Flood WarningEWXBlanco, Hays3 hr
May 17, 1:59 PM CDTFlash Flood WarningEWXBastrop, Lee, Travis, Williamson3 hr
May 17, 3:20 PM CDTSevere Thunderstorm WarningEWXLavaca55 min
May 17, 3:31 PM CDTTornado WarningEWXGuadalupe59 min
May 17, 3:34 PM CDTTornado WarningEWXLavaca56 min
May 17, 3:40 PM CDTTornado WarningEWXBastrop65 min
May 17, 3:40 PM CDTTornado WarningEWXBastrop32 min
May 17, 3:41 PM CDTSevere Thunderstorm WarningEWXDeWitt64 min
May 17, 3:48 PM CDTTornado WarningEWXGonzales72 min
May 17, 3:53 PM CDTTornado WarningEWXLavaca67 min
May 17, 3:59 PM CDTTornado WarningEWXDeWitt61 min
May 17, 4:07 PM CDTSevere Thunderstorm WarningEWXWebb68 min
May 17, 4:35 PM CDTTornado WarningEWXLavaca55 min
May 17, 4:40 PM CDTTornado WarningEWXVictoria80 min
May 17, 4:44 PM CDTSevere Thunderstorm WarningEWXJackson, Victoria61 min
May 17, 5:17 PM CDTTornado WarningEWXGoliad43 min

Nearby

Flash Flood Warnings in Texas, 1986Every flash flood warning in 1986

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.