Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 39, NWS Austin/San Antonio, TX

April 30, 1986Real County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 30, 1986, 8:59 PM CDT for Real County, Texas. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Apr 30, 1986, 8:59 PM CDT (01:59 UTC)
Expired
Apr 30, 1986, 10:00 PM CDT
In force
61 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Real 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

Del Rio, TX (KDRT), launched 00:00Z, 2.0 hours before the alert went out and 111 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 1986-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1250 joules per kilogram.LCLLFCEL10008507005003002001001 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, Del Rio, TX at 00:00Z on 1986-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939Sfc1 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
1250 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1887 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 010159
SVRSAT
TXC385-010300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
859 PM CDT WED APR 30 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1000 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTH CENTRAL TEXAS...REAL

AT 900 PM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR IN
NORTH REAL COUNTY.  THIS THUNDERSTORM WAS MOVING SLOWLY SOUTH.

FREQUENT LIGHTNING..STRONG DAMAGING WINDS AND LARGE HAIL WILL
LIKELY OCCUR IN THIS STORM.  IN ADDITION..LOCALLY HEAVY RAINFALL
AND FLOODING OFTEN ACCOMPANY SEVERE THUNDERSTORMS.

IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY.  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 LOCAL RADIO..TV OR NOAA WEATHER RADIO STATION
FOR LATER STATEMENTS OR WARNINGS REGARDING THIS SEVERE WEATHER
EVENT.

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 30, 4:49 PM CDT, 4 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
450 PM CDT WED APR 30 1986

AT 445 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS
EXTENDING FROM JUST SOUTH OF BROWNWOOD TO NEAR JUNCTION. HEAVIEST
THUNDERSTORMS WERE JUST WEST OF LLANO COUNTY AND ARE MOVING TOWARD
THE NORTHEAST 25 MPH.

OTHER HEAVY THUNDERSTORMS.. WITH HAIL INDICATED.. ARE LOCATED NORTH
EAST OF AUSTIN AND A LITTLE SOUTH OF CAMERON.

THE THUNDERSTORMS TO THE NORTHWEST HAVE THE POTENTIAL TO BECOME SEVERE
AND WE WILL BE WATCHING THESE STORMS CLOSELY FOR THE NEXT FEW HOURS.
Special weather statement, Apr 30, 5:51 PM CDT, 3 hours 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
550 PM CDT WED APR 30 1986

AT 545 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS
WELL NORTHWEST OF AUSTIN. THOSE THUNDERSTORMS EXTEND FROM
GOLDTHWAITE TO NORTHWEST OF LLANO TO ABOUT HALF WAY BETWEEN
JUNCTION AND FREDERICKSBURG.

THESE THUNDERSTORMS ARE LIKELY PRODUCING BRIEF HEAVY RAIN.. SMALL
HAIL AND STRONG GUSTY WINDS. MOVEMENT OF THE LINE IS TOWARD THE
EAST AND SOUTHEAST AT 15 MPH.

OTHER HEAVY THUNDERSTORMS ARE LOCATED NORTHEAST OF AUSTIN AND EXTEND
FROM ROCKDALE AND LEXINGTON NORTHEAST TOWARD PALESTINE.
Special weather statement, Apr 30, 7:00 PM CDT, 1 hour 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
700 PM CDT WED APR 30 1986

AT 655 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS
NORTHWEST OF AUSTIN. THOSE THUNDERSTORMS EXTEND FROM LAMPASAS
TO MARBLE FALLS TO FREDERICKSBURG. HEAVIEST THUNDERSTORMS WERE
BETWEEN KINGSLAND AND MARBLE FALLS.

LCRA AT BUCHANAN DAM REPORTED STRONG GUSTY WIND VERY HEAVY RAIN
FOR 15 MINUTES AND LOTS OF PEA TO MARBLE SIZE HAIL WHICH LASTED
FO2R 10 MINUTES AND NEARLY COVERED THE GROUND.

THIS LINE OF THUNDERSTORMS WAS MOVING TOWARD THE SOUTHEAST AT 20 MPH.

OTHER HEAVY THUNDERSTORMS ARE LOCATED NORTH AND EAST OF AUSTIN AND
MOVING AWAY.
Special weather statement, Apr 30, 7:55 PM CDT, 1 hour 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
755 PM CDT WED APR 30 1986

AT 755 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS
NORTH THROUGH WEST OF AUSTIN. THOSE THUNDERSTORMS EXTEND
FROM SOUTH OF WACO TO GEORGETOWN TO NEAR KERVILLE. HEAVIEST
THUNDERSTORMS WERE NORTH OF GEORGETOWN AND NORTH OF JOHNSON CITY.

RADIO STATION KHLB REPORTED ALOT OF PEA AND MARBLE SIZE HAIL AND
VERY HEAVY RAIN IN MARBLE FALLS. HAIL WAS ALuSO REPORTED BETWEEN
LAKE BUCHANAN AND BURNET.

THIS LINE OF THUNDERSTORMS WAS MOVING TOWARD THE SOUTHEAST AT 20
TO 25 MILES AN HOUR.
Special weather statement, Apr 30, 8:32 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
835 PM CST WED APR 29 1986

...THUNDERSTORMS DEVELOPING IN SOUTH BEXAR COUNTY...

AT 830 PM RADAR INDICATED A LINE OF SCATTERED THUNDERSTORMS FROM NORTH
ATASCOSA COUNTY ACROSS SOUTHEAST BEXAR INTO GUADALUPE COUNTY.  THESE
THUNDERSTORMS WILL LIKELY DEVELOP NORTH AND EASTWARD AND INTENSIFY
DURING THE NEXT HOUR.

ADDITIONAL STATEMENTS WILL BE ISSUED AS NECESSARY.
Special weather statement, Apr 30, 8:57 PM CDT, 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
900 PM CDT WED APR 30 1986

AT 900 PM CDT RADAR SHOWED A LINE OF VERY HEAVY THUNDERSTORMS
NORTH THROUGH SOUTH OF AUSTIN. THOSE THUNDERSTORMS EXTEND
FROM NEAR WACO TO TAYLOR.. TO AUSTIN AND BLANCO.  HEAVIEST
THUNDERSTORMS WERE FROM TAYLOR TO AUSTIN TO BLANCO.

OUR AMATURE RADIO NETWORK HAS RECEIVED NUMEROUS REPORTS OF PEA
SIZE TO MARBLE SIZE HAIL AROUND THE IMMEDIATE CENTRAL TEXAS
AREA. ONE RAINFALL REPORT WAS .85 INCH IN 15 MINUTES AT
ANDERSON MILL. ALSO .96 AT SHENANDOAH AND 1 INCH AT LAKE BUCHAHAN.

THIS LINE OF THUNDERSTORMS WAS MOVING TOWARD THE SOUTHEAST AT 20
TO 25 MILES AN HOUR.                                                           AA NEW LINE OF HEAVY THUNDERSTORMS DEVELOPED SOUTHEAST OF SAN ANTONIO.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 8:54 PM CDTSevere Thunderstorm WarningEWXAtascosa, Bexar66 min
Apr 30, 10:15 PM CDTSevere Thunderstorm WarningEWXLa Salle, McMullen60 min
May 1, 3:35 PM CDTSevere Thunderstorm WarningEWXMaverick55 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.