Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 154, NWS Austin/San Antonio, TX

September 10, 1987Travis County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Sep 10, 1987, 4:42 PM CDT for Travis County, Texas. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Sep 10, 1987, 4:42 PM CDT (21:42 UTC)
Expired
Sep 10, 1987, 5:45 PM CDT
In force
63 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Travis County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Sep 10, 4:56 PM CDTThunderstorm Wind 70Travis, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Victoria Regiona, TX (KVCT), launched 12:00Z, 9.7 hours before the alert went out and 186 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, Victoria Regiona, TX at 12:00Z on 1987-09-10Temperature 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, Victoria Regiona, TX at 12:00Z on 1987-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 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
2443 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
657 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
-16 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 KAUS 102142
SVRAUS
TXC031-171-299-453-102245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN TX
442 PM CDT THU SEP 10 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 545 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

TEXAS...BLANCO...GILLESPIE...LLANO AND TRAVIS

AT 435  PM CDT SCATTERED SEVERE THUNDERSTORMS HAVE DEVELOPED
FROM THE AUSTIN AREA WESTWARD TO NEAR LLANO. THESE THUNDERSTOR
MS HAVE PRODUCED STRONG GUSTY WINDS AND HAIL OVER PARTS OF
THESE AREA AND IS POSSIBLE OVER THE OTHER COUNTIES IN THE
SEVEERE THUNDERSTORMS.

THIS IS A DANGEROUS STORM.  TAKE COVER IMMEDIATELY !

THIS STORM MAY BTE ACCOMPANIED BY STRONG DAMAGING WINDS..HAIL AND
FREQUENT LIGHTNING.

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, Sep 10, 4:18 PM CDT, 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
415 PM CDT THU SEP 10 1987

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT THIS EVENING
FOR BANDERA...BEXAR...COMAL...EDWARDS...GUADALUPE...KENDALL...KERR...
KINNEY...MEDINA...REAL AND UVALDE COUNTIES.  THE METROPOLITAN AREA OF
SAN ANTONIO IS INCLUDED IN THE WATCH AREA.

IN ADDITION...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 7 PM CDT
FOR GONZALES COUNTY.

A LINE OF THUNDERSTORMS...SOME POSSIBLY SEVERE WITH STRONG DAMAGING
WINDS...LARGE HAIL...FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL...
EXTENDS FROM ROCKSPRINGS TO JUNCTION TO AUSTIN...WITH MOVEMENT TOWARD
THE SOUTHEAST AT 25 MPH.

AS THIS LINE MOVES SOUTHEAST THIS AFTERNOON AND EARLY EVENING...PERSONS
IN THE HILL COUNTRY...ADJACENT EDWARDS PLATEAU AND SOUTH CENTRAL TEXAS
SHOULD BE ON THE ALERT FOR THREATENING WEATHER...LISTEN FOR THE LATEST
SEVERE WEATHER BULLETINS...AND BE PREPARED TO? MOVE TO A PLACE OF SAFETY
IF SEVERE WEATHER IS SIGHTED OR A WARNING IS ISSUED.

ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT...SO PLEASE
STAY TUNED TO LOCAL RADIO...TV OR NOAA WEATHER RADIO STATIONS.
Special weather statement, Sep 10, 4:30 PM CDT, 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
430 PM CDT THU SEP 10 1987

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR VAL VERDE COUNTY
UNTIL 900 PM CDT...

AT 425 PM RADAR INDICATED THUNDERSTORMS AND RAINSHOWERS ALONG HIGHWAY
163 FROM 10 MILES SOUTH OF JUNO AND EXTENDED EAST TO NEAR
JUNCTION. ANOTHER AREA OF THUNDERSTORMS WAS IN MEXICO FROM 25 MILES
SOUTHWEST TO 75 MILES WEST OF DEL RIO. MOVEMENT OF THE STORMS WAS TO
THE EAST AT 30 MILES AN HOUR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...VERY HEAVY RAIN...AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

BOATERS ON LAKE AMISTAD AND SURROUNDING RIVERS SHOULD BE ON THE WATCH
FOR APPROACHING WEATHER AND MOVE QUICKLY TO SHORE AND AWAY FROM THE
WATER IF THE WEATHER BECOMES THREATENING.

ADDITIONAL STATEMENTS OR WARNINGS WILL BE ISSUED ASF
CONDITIONS WARRANT...SO PLEASE STAY TUNED.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 4:28 PM CDTSevere Thunderstorm WarningEWXEdwards, Kerr, Real62 min
Sep 10, 4:42 PM CDTSevere Thunderstorm WarningEWXBlanco, Gillespie, Llano63 min
Sep 10, 4:54 PM CDTSevere Thunderstorm WarningEWXKendall66 min
Sep 10, 5:17 PM CDTSevere Thunderstorm WarningEWXBandera58 min
Sep 10, 5:40 PM CDTSevere Thunderstorm WarningEWXBastrop, Caldwell65 min
Sep 10, 5:42 PM CDTSevere Thunderstorm WarningEWXComal63 min
Sep 10, 6:11 PM CDTSevere Thunderstorm WarningEWXBexar64 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.