Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 36, NWS Austin/San Antonio, TX

May 4, 19875 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 1987, 2:47 AM CDT for 5 counties in Texas. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
May 4, 1987, 2:47 AM CDT (07:47 UTC)
Expired
May 4, 1987, 3:45 AM CDT
In force
58 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Bandera County, TX, Edwards County, TX, Kerr County, TX, Real County, TX, 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 00:00Z, 7.8 hours before the alert went out and 120 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 1987-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1987-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3152 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
39 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 040747
SVRSAT
TXC019-137-265-271-385-463-040845-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
247 AM CDT MON MAY 4 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 345 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH TEXAS
          ...BANDERA...EDWARDS...KERR
          ...KINNEY...REAL...UVALDE
 
AT 245 AM CDT...RADAR INDICATED AN ALMOST SOLID LINE OF THUNDERSTORMS
EXTENDING FROM JUST NORTH OF DEL RIO IN VAL VERDE COUNTY
NORTHEASTWARD TO FREDERICKSBURG.  MOVEMENT WAS TOWARD THE EAST AT 20
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 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 3, 9:03 PM CDT, 5 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
855 PM CDT SUN MAY 3 1987

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR
THE COUNTIES AROUND THE AUSTIN AND CENTRAL TEXAS AREA.

AT 845 PM...WEATHER RADAR SHOWED VERY STRONG THUNDERSTORMS NEAR
LOTT AND ABOUT 25 EAST OF WACO. THIS WAS IN AN AREA OF SCATTERED
SHOWERS AND THUNDERSTORMS EXTENDING FROM NEAR LA GRANGE NORTH
THROUGH THE ROCKDALE AND CAMERON AREA. ALSO FROM NEAR TEMPLE TO
NORTH OF WACO THEN EAST TO NEAR PALESTINE. THESE THUNDERSTORMS
WERE MOVING NORTH NORTHEAST AT ABOUT 25 MPH.

PERSONS IN AND NEAR THE WATCH AREA...SHOULD STAY ON THE ALERT
AND CHECK FOR THE LATEST WEATHER INFORMATION OFTEN. ADDITIONAL
STAT)EMENTS AND WARNINGS WILL BE ISSUED AS CONDITION WARRENT.
Special weather statement, May 3, 10:07 PM CDT, 4 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1005 PM CDT SUN MAY 3 1987

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR
THE COUNTIES AROUND THE AUSTIN AND CENTRAL TEXAS AREA.

AT 950 PM...WEATHER RADAR SHOWED THUNDERSTORMS DEVELOPING IN AND
NEAR THE AUSTIN AREA. THESE THUNDERSTORMS WERE FROM SOUTH AUSTIN
TO NEAR SAN MARCOS AND BETWEEN LAKE TRAVIS AND LIBERTY HILL. OTHER
THUNDERSTORMS WERE LOCATED FROM NEAR TEMPLE TO NORTH OF WACO EAST
TO NEAR PALESTINE. MOVEMENT WAS NORTHEAST AT NEAR 20 MPH.

THESE THUNDERSTORMS NEAR THE AUSTIN AREA HAVE BEEN PRODUCING
SOME MARLE SIZE.

PERSONS IN AND NEAR THE WATCH AREA...SHOULD STAY ON THE ALERT
AND CHECK FOR THE LATEST WEAhTHER INFORMATION OFTEN. ADDITIONAL
STATEMENTS AND WARNINGS WILL BE ISSUED AS CONDITION WARRENT.
Local storm report, May 4, 12:11 AM CDT, 2 hours 36 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN TX
0005 AM CDT MON MAY 04 1987

1200 MIDNIGHT...DPS UNIT NEAR LULING CONFIRMED TWO...TWIN...TORNADOES
                ON THE GROUND JUST WEST OF LULING.

AUS/JVD.
Local storm report, May 4, 1:06 AM CDT, 1 hour 41 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
108 AM CDT MON MAY 4 1987

TIME       EVENT

1245 AM    GOLF BALL SIZE HAIL IN CITY OF HARWOOD GONZALES COUNTY.
Special weather statement, May 4, 2:41 AM CDT, 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
240 AM CDT MON MAY 5 19877

AT 235 AM CDT RADAR INDICATES A LINE OF STRONG THUNDERSTORMS
FROM STEPHENVILLE TO 5 MILES EAST OF GOLDTHWAITE...10 MILES
WEST OF LAKE BUCHANAN...30 MILES NORTHWEST OF MARBLE FALLS
40 MILES WEST OF KERRVILLE. HEAVY RAINS...HIGH WINDS AND HAIL IS
POSSIBLE WITH THESE STORMS. THE LINE IS MOVING TO THE SOUTHEAST
NEAR 15 MPH. THE THUNDERSTORMS HAVE WEAKEN IN GONZALES COUNTY.

PERSONS SHOULD  STAY ALERT AND CHECK FOR THE LATEST WEATHER
INFORMATION BEFORE LEAVING FOR WORK.
ADDITIONAL STATEMENTS AND WARNINGS WILL BE ISSUED AS CONDITION
WARRENT.

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 10:12 PM CDTSevere Thunderstorm WarningEWXTravis63 min
May 3, 10:37 PM CDTSevere Thunderstorm WarningEWXWilliamson68 min
May 3, 11:10 PM CDTSevere Thunderstorm WarningEWXCaldwell65 min
May 3, 11:44 PM CDTTornado WarningEWXCaldwell61 min
May 4, 12:09 AM CDTTornado WarningEWXGonzales66 min
May 4, 12:56 AM CDTSevere Thunderstorm WarningEWXLavaca64 min
May 4, 1:39 AM CDTSevere Thunderstorm WarningEWXEdwards66 min
May 4, 2:47 AM CDTSevere Thunderstorm WarningEWXKinney58 min
May 4, 3:47 AM CDTSevere Thunderstorm WarningEWXBandera, Medina, Uvalde58 min
May 4, 3:47 AM CDTSevere Thunderstorm WarningEWXKendall, Kerr58 min
May 4, 4:39 AM CDTSevere Thunderstorm WarningEWXBandera, Medina66 min
May 4, 5:59 AM CDTSevere Thunderstorm WarningEWXBexar61 min
May 4, 6:21 AM CDTSevere Thunderstorm WarningEWXGuadalupe, Wilson69 min
May 4, 6:39 AM CDTSevere Thunderstorm WarningEWXMaverick66 min
May 4, 7:37 AM CDTSevere Thunderstorm WarningEWXZavala68 min
May 4, 10:17 AM CDTSevere Thunderstorm WarningEWXDimmit73 min
May 4, 11:49 AM CDTSevere Thunderstorm WarningEWXWebb56 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; the sounding from the Mesonet's radiosonde archive.