Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 28, NWS Austin/San Antonio, TX

April 19, 1986Lampasas County, Mills County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 19, 1986, 3:13 PM CST for Lampasas County, Mills County, Texas. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Apr 19, 1986, 3:13 PM CST (21:13 UTC)
Expired
Apr 19, 1986, 4:15 PM CST
In force
62 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Lampasas County, TX, Mills 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, 9.2 hours before the alert went out and 102 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 1986-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1071 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 1986-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.19395878Sfc1 km3 km6 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
1071 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
595 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAUS 192113
SVRAUS
TXC281-333-192215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
313 PM CST SAT APR 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 415 PM CST FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

TEXAS...NORTHERN LAMPASAS AND MILLS

AT 300 PM CST A SEVERE THUNDERSTORM WAS LOCATED OVER MILLS
COUNTY..NEAR PRIDDY AND GOLDTHWAITE..MOVING TOWARDS THE EAST
AT 30 MPH.

THIS STORM HAS A HIGH POTENTIAL FOR TORNADOES.

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 THRE LOCAL NATIONAL WEATHER
SERVICE OFFICE.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Apr 19, 1:45 PM CST, 1 hour 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
145 PM CST SAT APR 19 1986

  ...SPRING STORM REMAINS A THREAT TO PORTIONS OF SOUTH TEXAS...

A MAJOR UPPER-LEVEL DISTURBANCE AND ASSOCIATED SURFACE COLD FRONT
OVER WEST TEXAS CONTINUE TO MOVE SLOWLY EAST THIS AFTERNOON..THUS
MAINTAINING THE THREAT OF SEVERE WEATHER DEVELOPMENT OVER CENTRAL AND
NORTHERN SECTIONS OF SOUTH TEXAS LATE THIS AFTERNOON AND TONIGHT.

SEVERAL FAVORABLE INGREDIENTS ARE INTERACTING TO PRODUCE THIS
SIGNIFICANT THREAT TO THE AREA.  STRONG LOW-LEVEL WIND CONTINUES TO
SPREAD ABUNDANT MOISTURE NORTHWARD ACROSS THE STATE AHEAD OF THE COLD
FRONT.  IN ADDITION..THE AIR MASS REMAINS VERY UNSTABLE WITH ADDITIONAL
DESTABILIZATION LIKELY INTO TONIGHT AS THE UPPER SYSTEM APPROACHES.

A TORNADO WATCH REMAINS IN EFFECT FOR A LARGE PORTION OF NORTHCENTRAL
TEXAS UNTIL 400 PM THIS AFTERNOON.  THUNDERSTORMS TRIGGERED BY THIS
STORM SYSTEM HAVE ALREADY PRODUCED AT LEAST ONE TORNADO WITHIN THE WATCH
AREA WHICH HAS RESULTED IN ONE FATALITY AND SEVERAL INJURIES IN THE
TOWN OF SWEETWATER NEAR ABILENE.  SEVERAL REPORTS OF LARGE HAIL HAVE
ALSO BEEN RECEIVED.

WHILE THE MOST SIGNIFICANT THREAT OF SEVERE WEATHER IS EXPECTED TO
CONTINUE OVER NORTH AND CENTRAL TEXAS..RESIDENTS ACROSS OUR AREA..
ESPECIALLY OVER THE HILL COUNTRY..ADJACENT SOUTHCENTRAL AND SOUTHEAST
TEXAS SHOULD MAINTAIN A CONSTANT VIGIL ON THE WEATHER THIS AFTERNOON
AND TONIGHT.  REMEMBER..SEVERE THUNDERSTORMS CAN BE EXPECTED TO PRODUCE
HAIL THREE-QUARTERS OF AN INCH IN DIAMETER OR LARGER..SURFACE WIND
GUSTS ABOVE 58 MILES AN HOUR..FREQUENT LIGHTNING AND LOCALLY HEAVY
RAINFALL.

STAY TUNED TO LOCAL RADIO..TELEVISION OR NOAA WEATHER RADIO FOR
ADDITIONAL WEATHER STATEMENTS AND/OR WARNINGS THROUGHOUT THIS
AFTERNOON AND TONIGHT.
Special weather statement, Apr 19, 2:57 PM CST, 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
300 PM CST SAT APR 19 1986

...SEVERE THUNDERSTORMS CONTINUE TO FORM TO THE DISTANT NORTHWEST...

AT 3 PM..RADAR SHOWED NEWLY DEVELOPING THUNDERSTORMS ABOUT 100 MILES
WEST AND NORTHWEST OF AUSTIN.  ONE WAS CENTERED OVER KIMBLE COUNTY..
JUST NORTH OF JUNCTION AND ANOTHER WAS OVER MCCULLOCH COUNTY..NEAR
BRADY.  THEY WERE MOVING TOWARDS THE NORTHEAST AT 25 MPH.

THE POTENTIAL FOR SEVERE THUNDERSTORMS AND POSSIBLY TORNADOES APPEARS
TO BE RELATIVELY HIGH FOR THE REMAINDER OF THIS AFTERNOON AND INTO
THE EVENING.  MANY COUNTIES OF CENTRAL AND NORTH TEXAS REMAIN UNDER
A TORNADO WATCH UNTIL 9PM.  TRAVIS AND ALL SURROUNDING COUNTIES ARE
INFCLUDED IN THIS WATCH.

BEGIN NOW TO MAKE PREPARATIONS FOR SEVERE WEATHER CONDITIONS LATER
TODAY AND INTO THE NIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 3:52 PM CSTSevere Thunderstorm WarningEWXLlano98 min
Apr 19, 4:35 PM CSTSevere Thunderstorm WarningEWXBlanco, Burnet55 min
Apr 19, 4:35 PM CSTSevere Thunderstorm WarningEWXGillespie55 min
Apr 19, 5:07 PM CSTSevere Thunderstorm WarningEWXWilliamson68 min

Nearby

Severe Thunderstorm Warnings in Texas, 1986Every severe thunderstorm 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.