Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 36, NWS Austin/San Antonio, TX

April 19, 1986La Salle County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 19, 1986, 11:18 PM CST for La Salle County, Texas. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Apr 19, 1986, 11:18 PM CST (05:18 UTC)
Expired
Apr 20, 1986, 12:00 AM CST
In force
42 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County La Salle 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, 5.3 hours before the alert went out and 204 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 1986-04-20Temperature 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, Del Rio, TX at 00:00Z on 1986-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 square meters per square second.1939587897Sfc1 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
3740 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
18 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 KSAT 200519
SVRSAT
TXC283-200600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1118 PM CST SAT APR 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL MIDNIGHT TONIGHT FOR PEOPLE IN THE FOLLOWING
COUNTY OF

SOUTH CENTRAL TEXAS...LA SALLE

AT 1115 PM CST..NATIONAL WEATHER SERVICE RADAR INDICATED A POSSIBLE
SEVERE THUNDERSTORM 20 MILES SOUTHEAST OF COTULLA IN SOUTHEAST LA SALLE
COUNTY.  THIS STORM LIKELY CONTAINS LARGE HAIL AND DAMAGING WINDS.  IT
IS MOVING TO THE EAST AT 20 MILES AN HOUR.

SEVERE WEATHER SHOULD BE REPORTED AS QUICKLY AS POSSIBLE TO THE NEAREST
LAW ENFORCEMENT AGENCY FOR RELAY TO uTHE NATIONAL WEATHER SERVICE.

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

Local storm report, Apr 19, 9:14 PM CST, 2 hours 4 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
913 PM CST SAT 19 APR 1986

TIME CST     REPORT

400 PM       10W LLANO LARGE HAIL STRIPPED PEACH CROP.
415 PM        9N LLANO S.O. REPORTED HAIL UNKNOWN SIZE.
430 PM       NEAR LLANO HAIL SLIGHTLY SMALLER THAN GOLF BALL.
435 PM       TOW..HAIL AND HIGH WINDS..LIGHT DAMAGE.
440 PM       WIND GUST TO 50 MPH AND SMALL HAIL AT BURNET.
501 PM       AT CITY OF BURNET..2 INCH HAIL.
530 PM       PRIDDY..1/2 INCH HAIL.
550 PM       STRONG WIND SHIFT AT LAKE TRAVIS.  OUTFLOW BNDRY.
600 PM       10N GEORGETOWN..5/8 INCH HAIL.
605 PM       PEA SIZE HAIL AT GEORGETOWN.
620 PM       WIND SHIFT AT WSO..PEAK GUST 29 MPH. OUTFLOW BNDRY.
635 PM       SIESTA SHORES..SOUTH SIDE OF LAKE TRAVIS..MARBLE HAIL.
637 PM       LAKEWAY RESORT..LAKE TRAVIS..PEA TO MARBLE SIZE HAIL.
640 PM       AIRCRAFT 737 REPORTED SEVERE TURBULENCE 10NE AUS.
705 PM       ROCKDALE..MILAM CO..PEA SIZE HAIL.
720 PM       SW AUSTIN..WEST LAKE HILLS..SMALL HAIL.
722 PM       1/4 TO 1/2 INCH HAIL OVER CENTRAL CITY AUSTIN.
730 PM       PILOT REPORTED FUNNEL CLOUD..ALOFT..20 MI E AUSTIN.
827 PM       4W ELROY..15 SE OF AUS..1/2 TO 3/4 INCH HAIL.

END/JVD.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 9:47 PM CSTSevere Thunderstorm WarningEWXLavaca13 min
Apr 19, 9:51 PM CSTSevere Thunderstorm WarningEWXLa Salle54 min
Apr 19, 10:49 PM CSTSevere Thunderstorm WarningEWXAtascosa, McMullen56 min
Apr 20, 1:50 AM CSTSevere Thunderstorm WarningEWXCalhoun70 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.