Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 79, NWS Austin/San Antonio, TX

May 25, 1986Webb County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 25, 1986, 9:15 PM CDT for Webb County, Texas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
May 25, 1986, 9:15 PM CDT (02:15 UTC)
Expired
May 25, 1986, 10:15 PM CDT
In force
60 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Webb 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, 2.3 hours before the alert went out and 232 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 1986-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 678 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 1986-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
678 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
2054 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
67 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 260216 COR
SVRSAT
TXC479-260315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
915 PM CDT SUN MAY 25 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1015 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY OF

TEXAS...SOUTHERN WEBB

AT 910 PM CDT A SEVERE THUNDERSTORM WAS LOCATED JUST NORTH OF
BRUNI IN SOUTHEAST WEBB COUNTY. THIS STORM WAS MOVING TO THE
SOUTH AT AROUND 15 MPH. HOWEVER..AN AREA OF THUNDERSTORMS IS
BUILDING TO THE WEST OVER SOUTHERN WEBB COUNTY. THEREFORE PERSONS
IN THE LAREDO AREA SHOULD BE ALERT SHOULD THESE THUNDERSTORMS
BUILDING TO THE WEST.

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, May 25, 3:55 PM CDT, 5 hours 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
355 PM CDT SUN MAY 25 1986

   ...STRONG THUNDERSTORMS MOVING INTO WESTERN BEXAR COUNTY...

HONDO RADAR INDICATES STRONG THUNDERSTORMS MOVING INTO WESTERN BEXAR
COUNTY. THESE THUNDERSTORMS ARE MOVING TO THE EAST AT 10 MILES.
AT THIS RATE OF MOVEMENT..THUNDERSTORMS WILL BE OVER MUCH OF THE CITY
OF SAN ANTONIO WITHIN THE HOUR.

FREQUENT LIGHTNING..STRONG GUSTY WINDS..POSSIBLE HAIL AND VERY
HEAVY RAINFALL CAN BE EXPECTED WITH THESE STORMS.

MUCH OF SOUTH TEXAS..INCLUDING BEXAR COUNTY..IS UNDER A FLASH FLOOD
WATCH. THIS MEANS THAT CONDITIONS ARE FAVORABLE FOR FLASH FLOODING.
HEAVY RAINFALL CAN FLOOD UNDERPASSES..LOW WATER CROSSINGS AND
OTHER FLOOD PRONE AREAS. THEREFORE MOTORISTS ESPECIALLY ARE ADVISED
TO EXERCISE CAUTION SHOULD DRIVING BE NECESSARY THIS AFTERNOON AND
TONIGHT.

STAY TUNED TO YOUR LOCAL RADIO..TV..OR NOAA WEATHER RADIO FOR OTHER
STATEMENTS OR WARNIsNGS WHICH WILL BE ISSUED AS NEEDED.

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 10:13 PM CDTSevere Thunderstorm WarningEWXWebb62 min
May 26, 5:25 AM CDTFlash Flood WarningEWXVal Verde4 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.