Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 47, NWS Austin/San Antonio, TX

May 9, 1986Uvalde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 9, 1986, 4:04 PM CDT for Uvalde County, Texas. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
May 9, 1986, 4:04 PM CDT (21:04 UTC)
Expired
May 9, 1986, 5:00 PM CDT
In force
56 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Uvalde 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 12:00Z, 9.1 hours before the alert went out and 104 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 12:00Z on 1986-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2443 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 12:00Z on 1986-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
2443 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
574 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
2.2
Supercell composite
11.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 092104
SVRSAT
TXC463-092200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
404 PM CDT FRI MAY 9 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTH CENTRAL TEXAS...UVALDE

AT 403 PM CDT A SEVERE THUNDERSTORM WAS INDICATED 10 MILES
SOUTHWEST OF UVALDE MOVING TO THE NORTH NORTHEAST AT 20 MILES AN
HOUR.  THIS STORM LIKELY CONTAINS LARGE HAIL AND VERY HEAVY RAIN.
IT MAY ALSO PRODUCE VERY STRONG WINDS.

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 7:28 PM CDTSevere Thunderstorm WarningEWXMills62 min
May 8, 7:31 PM CDTSevere Thunderstorm WarningEWXWebb59 min
May 9, 3:22 PM CDTSevere Thunderstorm WarningEWXEdwards, Real68 min
May 9, 3:34 PM CDTSevere Thunderstorm WarningEWXKerr56 min
May 9, 4:35 PM CDTFlash Flood WarningEWXVal Verde4 hr
May 9, 4:48 PM CDTFlash Flood WarningEWXKerr4 hr

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.