Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 129, NWS Austin/San Antonio, TX

May 29, 1987Kinney County, Maverick County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 29, 1987, 4:58 AM CDT for Kinney County, Maverick County, Texas. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
May 29, 1987, 4:58 AM CDT (09:58 UTC)
Expired
May 29, 1987, 6:00 AM CDT
In force
62 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Kinney County, TX, Maverick 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, 10.0 hours before the alert went out and 58 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 1987-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4195 joules per kilogram.LCLEL10008507005003002001001 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 1987-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.193958Sfc1 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
4195 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
880 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
2.3
Supercell composite
10.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 290958
SVRSAT
TXC271-323-291100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
458 AM CDT FRI MAY 29 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 600 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...KINNEY...MAVERICK
 
AT 455 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM ON THE
KINNEY-MAVERICK COUNTY LINE BETWEEN BRACKETTVILLE AND EAGLE PASS.
THIS STORM IS MOVING TOWARD THE EAST-NORTHEAST AT 30 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...HAIL
3/4 INCH OR MORE IN DIAMETER...FREQUENT LIGHTNING AND VERY HEAVY
RAIN.
 
PLEASE LIST8EN 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 29, 1:27 AM CDT, 3 hours 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
127 AM CDT FRI MAY 29 1987

...A SEVERE THUNDERSTORM WATCH COVERS ALL OF VAL VERDE COUNTY UNTIL
7 AM CDT...

AT 115 AM CDT RADAR INDICATED A VERY STRONG  THUNDERSTORM ABOUT 10
MILES WEST OF DEL RIO IN MEXICO MOVING EAST AT AROUND 25 MPH.
THUNDERSTORMS ARE NOW SCATTERED OVER ALL OF VAL VERDE COUNTY.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND
LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 29, 2:06 AM CDT, 2 hours 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
200 AM CDT FRI MAY 19 1987

...VERY INTENSE THUNDERSTORMS NOW MOVING NORTHWARD AND AWAY FROM
AUSTIN...

JUST BEFORE 2 AM...RADAR SHOWED A LINE OF VERY INTENSE THUNDERSTORMS...
TO EXTEND FROM JUST NORTH OF COLLEGE STATION AND AUSTIN THROUGH KERR-
VILLE AND ON INTO THE WESTERN HILL COUNTRY.  THE STRONGEST STORMS WERE
LOCATED NEAR CAMERON...IN MILAM COUNTY AND OVER WILLIAMSON COUNTY
NEAR HUTTO AND LEANDER.  THOSE INDIVIDUAL STORMS WERE MOVING TOWARDS
THE NORTH NORTHEAST AT 30 MPH.

NO SEVERE WEATHER HAS BEEN REPORTED TO OR DETECTED BY THIS OFFICE
AT THIS TIME BUT CONDITIONS REMAIN VERY UNSTABLE.  CONTINUE THE
SEVERE THUNDERSTORM WATCH...WHICH COVERS TRAVIS AND ALL SURROUNDING
COUNTIES.
Special weather statement, May 29, 2:38 AM CDT, 2 hours 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
138 AM CDT FRI MAY 29 1987

...A SEVERE THUNDERSTORM WATCH COVERS ALL OF VAL VERDE COUNTY UNTIL
7 AM CDT...

AT 125 AM CDT RADAR INDICATED A VERY STRONG  THUNDERSTORM ABOUT 10
MILES WEST OF DEL RIO IN MEXICO MOVING EAST AT AROUND 25 MPH.
THUNDERSTORMS ARE NOW SCATTERED OVER ALL OF VAL VERDE COUNTY.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
THUNDERSTORMS IN A0ND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS
SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND
LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 29, 2:58 AM CDT, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
300 AM CDT FRI MAY 19 1987

...VERY INTENSE THUNDERSTORMS AND HEAVY RAINS REMAIN ON THE WEST
AND NORTH SIDE OF AUSTIN....

LOCAL RADAR SHOWS VERY STRONG THUNDERSTORMS JUST WEST OF THE CITY...NEAR
LAKE TRAVIS AND ALSO IN THE ROUND ROCK/GEORGETOWN AREAS.  RAINFALL
RATES WERE ESTIMATED AT JUST OVER TWO INCHES PER HOUR IN SEVERAL SMALL
SPOTS WITHIN THOSE STORMS.  AN UNCONFIRMED REPORT OF OVER THREE INCHES
HAS FALLEN OUT AT LAKEWAY.

THE THREAT OF FLASH FLOODING MAY BECOME MUCH MORE IMPORTANT DURING
THE EARLY MORNING HOURS...EVEN THOUGH THESE STORMS HAVE A HIGH
POTENTIAL FOR LARGE HAIL AND HIGH WINDS.

CONTINUE THE SEVERE THUNDERSTORM WATCH FOR A LARGE PORTION OF CENTRAL
AND SOUTH CENTRAL TEXAS...INCLUDING TRAVIS AND ALL SURROUNDING
COUNTIES...UNTIL 7 AM.
Special weather statement, May 29, 4:47 AM CDT, 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
445 AM CDT FRI MAY 29 1987

THUNDERSTORMS ARE MOVING ACROSS COMAL COUNTY.  THESE STORMS LIKELY
CONTAIN FREQUENT LIGHTNING...POSSIBLE SMALL HAIL...GUSTY WINDS AND
LOCALLY HEAVY RAIN.

AS THESE STORMS MOVE ACROSS CANYON LAKE...BOATERS AND MARINAS MAY
BE AFFECTED BY THE WEATHER...SAFETY MEASURES SHOULD BE TAKEN TO
SAFEGUARD LIFE AND PROPERTY.

ADDITIONAL STATEMENTS OR WARNINGS WILL BE ISSUED DURING THE MORNING
AS WEATHER CONDITIONS DICTATE...SO PLEASE STAY TUNED.
Local storm report, May 29, 4:50 AM CDT, 8 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
450 AM CDT FRI MAY 29 1987

SHOAL CREEK NOW FLOODING HOMES IN THE 6200 BLOCK.
SHOAL CREEK AT THE BRIDGE BOTTOM AND NOW FLOODING ANDERSON LANE.
RAINFA#LL TOTALS APPROACHING SIX INCHES IN MANY SPOTS AROUND
TRAVIS AND WILLIAMSON COUNTIES.

AUS/JVD.

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:05 PM CDTTornado WarningEWXVal Verde70 min
May 28, 8:20 PM CDTSevere Thunderstorm WarningEWXVal Verde70 min
May 28, 9:13 PM CDTSevere Thunderstorm WarningEWXKinney62 min
May 28, 9:55 PM CDTSevere Thunderstorm WarningEWXVal Verde65 min
May 28, 10:18 PM CDTSevere Thunderstorm WarningEWXKinney57 min
May 28, 11:14 PM CDTSevere Thunderstorm WarningEWXKinney61 min
May 29, 12:24 AM CDTSevere Thunderstorm WarningEWXReal, Uvalde66 min
May 29, 12:24 AM CDTSevere Thunderstorm WarningEWXKinney66 min
May 29, 1:35 AM CDTSevere Thunderstorm WarningEWXBandera, Medina, Uvalde55 min
May 29, 2:32 AM CDTSevere Thunderstorm WarningEWXBandera, Medina58 min
May 29, 2:35 AM CDTSevere Thunderstorm WarningEWXVal Verde2 hr
May 29, 3:14 AM CDTFlash Flood WarningEWXTravis, Williamson2 hr
May 29, 3:19 AM CDTFlash Flood WarningEWXBandera, Kendall, Kerr, Real4 hr
May 29, 3:19 AM CDTFlash Flood WarningEWXMedina, Uvalde4 hr
May 29, 3:30 AM CDTSevere Thunderstorm WarningEWXBandera, Kerr, Real, Uvalde60 min
May 29, 3:30 AM CDTSevere Thunderstorm WarningEWXKendall60 min
May 29, 3:30 AM CDTSevere Thunderstorm WarningEWXMedina60 min
May 29, 4:39 AM CDTFlash Flood WarningEWXBastrop, Caldwell, Hays4 hr
May 29, 4:39 AM CDTFlash Flood WarningEWXLee4 hr
May 29, 4:39 AM CDTFlash Flood WarningEWXBlanco4 hr
May 29, 4:55 AM CDTSevere Thunderstorm WarningEWXBandera, Medina, Uvalde65 min
May 29, 7:27 AM CDTFlash Flood WarningEWXBandera, Medina, Uvalde4 hr
May 29, 11:58 AM CDTFlash Flood WarningEWXEdwards, Kerr, Real3 hr
May 29, 1:32 PM CDTSevere Thunderstorm WarningEWXKerr58 min
May 29, 2:23 PM CDTFlash Flood WarningEWXEdwards, Kerr, Real3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987

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.