Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 63, NWS Austin/San Antonio, TX

May 16, 1986La Salle County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 16, 1986, 8:20 PM CDT for La Salle County, Texas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
May 16, 1986, 8:20 PM CDT (01:20 UTC)
Expired
May 16, 1986, 9:20 PM CDT
In force
60 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, 1.3 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 1986-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3192 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 1986-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
3192 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
954 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
1.0
Supercell composite
6.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 170123
SVRSAT
TXC283-170220-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
820 PM CDT FRI MAY 16 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 920 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY OF

TEXAS...LA SALLE

AT 815 PM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR IN
EXTREME WESTERN LA SALLE COUNTY..ABOUT 15 MILES WEST OF THE CITY
OF COTULLA.  THIS STORM PRODUCED 3/4 INCH HAIL AS IT MOVED OVER
THE CITY OF CARRIZO SPRINGS JUST AFTER 700 PM THIS EVENING.  THE
STORM ALSO PRODUCED VERY STRONG WINDS GUSTS NEAR ASHERTON AT 745
PM CDT THIS EVENING.  THIS DANGEROUS STORM IS MOVING TO THE EAST
SOUTHEAST AT NEAR 25 MILES AN HOUR.  AT THIS TIME ITS TRACK WILL
TAKE IT NEAR OR OVER THE CITY OF COTULLA.  EVERYONE IN AND NEAR
THE PATH OF THIS STORM SHOULD MOVE TO A WELL BUILT BUILDING OR
HOME IMMEDIATELY.

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
MFOR 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 16, 3:07 PM CDT, 5 hours 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
306 PM CDT FRI MAY 16 1986

 ...DANGEROUS THUNDERSTORMS IN THE DEL RIO AREA...

AT 305 PM CDT RADAR INDICATED A INTENSE THUNDERSTORM 20 MILES WEST OF
THE DEL RIO INTERNATIONAL AIRPORT.  MGVEMENT WAS TOWARDS THE EAST AT
10 MILES AN HOUR.

THIS STORM IS APPROACHING THE SEVERE..PERSONS IN THE CITY OF DEL RIO
AND VICINITY SHOULD BE PREPARED FOR HEAVY RAIN..SMALL HAIL..STRONG
WINDS AND FREQUENT LIGHTNING WITH THIS STORM.

YOU SHOULD LISTEN TO LOCAL RADIO STATIONS AND NATIONAL WEATHER SERVICE
RADIO SINCE THIS STORM IS INCREASING RAPIDLY A SEVERE THUNDERSTORMS
WARNING MAY BE ISSUED ON VERY SHORT NOTICE.
Special weather statement, May 16, 4:05 PM CDT, 4 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
400 PM CDT FRI MAY 16 1986

AT 400 PM CDT RADAR INDICATED A LINE OF THUNDERSTORMS DEVELOPING IN
MEXICO MOVING TOWARD THE EAST AT ABOUT 10 MPH. THESE STORMS WILL
MOVE INTO WESTERN PORTIONS OF KINNEY AND MAVERICK COUNTIES WITHIN
THE HOUR.

THESE THUNDERSTORMS WILL PRODUCE HEAVY RAINS WITH POSSIBLE HAIL AND
HIGH WINDS AS THEY MOVE THROUGH THE AREA.

YOU SHOULD LISTEN TO LOCAL RADIO SJTATIONS AND NATIONAL WEATHER SERVICE
RADIO FOR FURTHER STATEMENTS AS THESE STORMS DEVELOPE.
Special weather statement, May 16, 5:24 PM CDT, 2 hours 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
515 PM CDT FRI MAY 16 1986

NATIONAL WEATHER SERVICE RADAR CONTINUES TO INDICATE THUNDERSTORMS
DEVELOPING ACROSS WESTERN PORTIONS OF SOUTH TEXAS. AT 515 PM CDT
HEAVY THUNDERSTORMS WERE INDICATED IN MEXICO SOUTH OF DEL RIO MOVING
EASTWARD INTO KINNEY COUNTY AT ABOUT 25 MPH. ANOTHER STRONG STORM WHICH
EARLIER HAD PRODUCED GOLF BALL SIZED HAIL AT COMSTOCK IN VAL VERDE COUNTY
CONTINUED EASTWARD MOVEMENT ACROSS EDWARDS COUNTY.

YOU SHOULD LISTEN TO LOCAL RADIO STATIONS AND NATIONAL WEATHER SERVICE
RADIO FOR FURTHER STATEMENTS AS THESE STORMS DEVELOPE.
Special weather statement, May 16, 6:02 PM CDT, 2 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
600 PM CDT FRI MAY 16 1986

     ....VERY HEAVY THUNDERSTORM AT EAGLE PASS IN MAVERICK COUNTY....

AT 6PM CDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
ALONG THE RIO GRANDE AT EAGLE PASS IN MAVERICK COUNTY.  REPORTS RECEIVED
FROM THE PUBLIC INDICATE HEAVY RAIN AND 3/4 INCH HAIL AS THIS STORM
CONTINUES TO MOVE ACROSS THE RIVER. THE STORM CONTINUES MOVEMENT TOWARD
THE SOUTHEAST AT NEAR 25 MILES AN HOUR.

PLEASE STAY TUNED TO LOCAL RADIO STATIONS AND NATIONAL WEATHER SERVICE
RADIO FOR FURTHER STATEMENTS REGARDING THIS STORM.
Special weather statement, May 16, 7:13 PM CDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
712 PM CDT FRI MAY 16 1986

...SEVERE THUNDERSTORM FOR DIMMITT COUNTY IN EFFECT UNTIL 8 PM CDT...
...SEVERE THUNDERSTORM WARNING FOR MAVERICK COUNTY HAS EXPIRED...

THE HEAVY THUNDERSTORM WHICH EARLIER HAD PRODUCED GOLF BALL SIZED HAIL
NEAR EAGLE PASS IN MAVERICK COUNTY IS NOW LOCATED IN NORTHWEST DIMMIT
COUNTY..ONLY 5 MILES TO THE WEST OF CARRIZO SPRINGS.  THIS IS A VERY
DANGEROUS STORM..CAPABLE OF PRODUCING EXTREMELY HEAVY RAINFALL..LARGE
HAIL AND DAMAGING WINDS.  THE STORM IS MOVING TO THE EAST SOUTHEAST AT
NEAR 20 MILES AN HOUR AND WILL LIKELY MOVE OVER THE CARRIZO SPRINGS
AREA.  EVERYONE IN AND NEAR THIS DANGEROUS STORM MUST MOVE TO A SAFE
PLACE IMMEDIATELY.

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 8:01 PM CDTSevere Thunderstorm WarningEWXDimmit59 min
May 17, 9:29 AM CDTSevere Thunderstorm WarningEWXLampasas, Mills, San Saba61 min
May 17, 11:24 AM CDTTornado WarningEWXBurnet, Williamson66 min
May 17, 11:39 AM CDTSevere Thunderstorm WarningEWXLlano66 min
May 17, 11:58 AM CDTSevere Thunderstorm WarningEWXBurnet, Lampasas, San Saba62 min
May 17, 11:58 AM CDTSevere Thunderstorm WarningEWXLlano62 min
May 17, 12:21 PM CDTTornado WarningEWXBlanco, Burnet, Llano69 min
May 17, 12:49 PM CDTSevere Thunderstorm WarningEWXComal56 min
May 17, 12:52 PM CDTTornado WarningEWXTravis68 min
May 17, 1:09 PM CDTSevere Thunderstorm WarningEWXWilliamson66 min
May 17, 1:23 PM CDTSevere Thunderstorm WarningEWXHays67 min
May 17, 1:39 PM CDTSevere Thunderstorm WarningEWXBastrop, Lee66 min
May 17, 1:59 PM CDTFlash Flood WarningEWXBlanco, Hays3 hr
May 17, 1:59 PM CDTFlash Flood WarningEWXBurnet3 hr
May 17, 1:59 PM CDTFlash Flood WarningEWXBastrop, Lee, Travis, Williamson3 hr
May 17, 3:20 PM CDTSevere Thunderstorm WarningEWXLavaca55 min
May 17, 3:31 PM CDTTornado WarningEWXGuadalupe59 min
May 17, 3:34 PM CDTTornado WarningEWXLavaca56 min
May 17, 3:40 PM CDTTornado WarningEWXBastrop65 min
May 17, 3:40 PM CDTTornado WarningEWXBastrop32 min
May 17, 3:41 PM CDTSevere Thunderstorm WarningEWXDeWitt64 min
May 17, 3:48 PM CDTTornado WarningEWXGonzales72 min
May 17, 3:53 PM CDTTornado WarningEWXLavaca67 min
May 17, 3:59 PM CDTTornado WarningEWXDeWitt61 min
May 17, 4:07 PM CDTSevere Thunderstorm WarningEWXWebb68 min
May 17, 4:35 PM CDTTornado WarningEWXLavaca55 min
May 17, 4:40 PM CDTTornado WarningEWXVictoria80 min
May 17, 4:44 PM CDTSevere Thunderstorm WarningEWXJackson, Victoria61 min
May 17, 5:17 PM CDTTornado WarningEWXGoliad43 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.