Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 16, NWS Austin/San Antonio, TX

March 16, 1987Edwards County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 16, 1987, 7:19 PM CST for Edwards County, Texas. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Mar 16, 1987, 7:19 PM CST (01:19 UTC)
Expired
Mar 16, 1987, 8:15 PM CST
In force
56 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Edwards 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 86 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 1987-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1799 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 1987-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.1939587897117Sfc1 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
1799 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1090 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
309 m²/s²
Significant tornado parameter
2.0
Supercell composite
7.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 170119
SVRSAT
TXC137-170215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
719 PM CST MON MAR 16 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 815 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH CENTRAL TEXAS
          ...EDWARDS
 
AT 715 PM CST...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM IN SOUTHERN EDWARDS COUNTY...WEST OF THE CAMP WOOD AND
BARKSDALE AREA.  THIS STORM WAS MOVING EAST AT 25 MILES AN HOUR.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

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, Mar 16, 3:38 PM CST, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
337 PM CST MON MAR 16 1987

...A TORNADO WATCH IS IN EFFECT FOR VAL VERDE COUNTY UNTIL 900 PM
CST...

AT 335 PM CST RADAR INDICATED THUNDERSTORMS FROM 25 MILES
NORTHWEST OF DEL RIO TO 75 MILES NORTHWEST OF DEL RIO. THESE
STORMS WERE BUILDING RAPIDLY AND MOVING TO THE SOUTHEAST AT 5 MPH.

BOATERS ON LAKE AMISTAD SHOULD KEEP A LOOKOUT FOR STRONG GUSTY WINDS
AND DANGEROUS LIGHTNING AS THESE STORMS MOVE ACROSS LAKE AMISTAD.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PEOPLE IN VAL VERDE COUNTY SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
Special weather statement, Mar 16, 4:01 PM CST, 3 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
403 PM CST MON MAR 16 1987

...TORNADO WATCH IN EFFECT UNTIL 900 PM TONIGHT FOR MUCH OF THE
TEXAS HILL COUNTRY AND EDWARDS PLATEAU...

AN UPPER LEVEL DISTURBANCE IN NEW MEXICO THIS AFTERNOON WILL MOVE SLOWLY
EASTWARD TONIGHT AS A COLD FRONT CURRENTLY IN WEST TEXAS MOVES INTO
CENTRAL TEXAS.  THUNDERSTORMS ARE EXPECTED TO FORM IN THE VERY MOIST
AND UNSTABLE AIRMASS OVER SOUTH CENTRAL TEXAS.  THE NECESSARY WEATHER
CONDITIONS HAVE COME TOGETHER TO PRODUCE A THREAT OF SEVERE WEATHER.

SCATTERED THUNDERSTORMS HAVE FORMED IN THE WESTERN PORTION OF THE HILL
COUNTRY SOUTHWESTWARD TO NEAR DEL RIO.  THESE STORMS ARE MOVING TO THE
NORTHEAST AT NEAR 30 MILES AN HOUR.  AS THESE STORMS CONTINUE TO
DEVELOP AND MOVE EASTWARD ACROSS SOUTH CENTRAL TEXAS...A VERY REAL
THREAT OF LARGE HAIL...DAMAGING WIND AND PERHAPS EVEN TORNADOES EXISTS.

RESIDENTS OF SOUTH CENTRAL TEXAS ARE ASKED TO KEEP TUNED TO A SOURCE OF
WEATHER INFORMATION...AND BE READY TO MOVE TO A PLACE OF SAFETY IF
SEVERE WEATHER IS REPORTED OR A WARNING IS ISSUED.  IT IS VERY POSSIBLE
THAT THE TORNADO WATCH WILL BE EXTENDED EASTWARD THIS EVENING ACROSS
THE REMAINDER OF SOUTH CENTRAL TEXAS...INCLUDING THE SAN ANTONIO AREA.

REMEMBER...SEVERE THUNDERSTORMS MAY ALSO PRODUCE HEAVY RAINFALL AND VERY
DEADLY AND DANGEROUS LIGHTNING.  LOW WATER CROSSINGS AS WELL AS POORLY
DRAINED STREETS AND HIGHWAYS MAY FLOOD.  MOTORISTS SHOULD USE EXTRA
CAUTION IN AND NEAR HEAVY RAINFALL.
Special weather statement, Mar 16, 5:07 PM CST, 2 hours 12 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
507 PM CST MON MAR 16 1987

...TORNADO WATCH IN EFFECT UNTIL 900 PM TONIGHT FOR MUCH OF THE
TEXAS HILL COUNTRY AND EDWARDS PLATEAU...

WIDELY SCATTERED THUNDERSTORMS WERE INDICATED AT 500 PM THIS AFTERNOON
BY NATIONAL WEATHER SERVICE RADAR IN AN AREA WEST OF A LINE FROM DEL
RIO TO JUNCTION.  MARBLE SIZED HAIL WAS REPORTED AT COMSTOCK IN VAL
VERDE COUNTY JUST BEFORE 500 PM AS THE STORMS MOVED ACROSS.  VERY HEAVY
RAIN WAS ALSO INDICATED IN THE STORMS IN VAL VERDE COUNTY.  THE ACTIVITY
WAS MOVING TO THE NORTHEAST AT NEAR 30 MILES AN HOUR.

LARGE HAIL...DAMAGING WIND AND ISOLATED TORNADOES ARE POSSIBLE AS THESE
VERY INTENSE STORMS CONTINUE TO DEVELOP EASTWARD INTO SOUTH CENTRAL
TEXAS TONIGHT.  VERY FREQUENT...DEADLY LIGHTNING AND BRIEF HEAVY RAIN
ARE ALSO EXPECTED.  FLOODING AND LIGHTNING ARE THE TWO MAJOR CAUSES OF
WEATHER RELATED DEATHS IN SOUTH TEXAS.
<
IF SEVERE WEATHER IS REPORTED OR A WARNING IS ISSUED...RESIDENTS IN THE
THREATENED COUNTY SEEK FOR SHELTER IN A WELL BUILT HOME OR STURDY
BUILDING.  MOVE INTO THE CENTER PORTION OF THE BUILDING ON THE LOWEST
FLOOR AND STAY AWAY FROM DOORS AND WINDOWS4.

IF A TORNADO THREATENS...CROUCH LOW ON THE FLOOR...PROTECTING THE HEAD
WITH HANDS AND ARMS.  ABOVE ALL ELSE...DO NOT REMAIN IN A VEHICLE.  THEY
ARE HIGH PROFILED AND VERY SUBJECT TO BEING OVERTURNED AND CRUSHED IN
HIGH WINDS.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 16, 6:21 PM CSTTornado WarningEWXKinney54 min
Mar 16, 6:47 PM CSTSevere Thunderstorm WarningEWXVal Verde58 min
Mar 16, 7:15 PM CSTSevere Thunderstorm WarningEWXKinney60 min
Mar 16, 7:35 PM CSTSevere Thunderstorm WarningEWXReal, Uvalde55 min
Mar 16, 8:01 PM CSTSevere Thunderstorm WarningEWXMaverick44 min
Mar 16, 8:32 PM CSTTornado WarningEWXUvalde58 min
Mar 16, 8:46 PM CSTSevere Thunderstorm WarningEWXZavala44 min
Mar 16, 8:57 PM CSTSevere Thunderstorm WarningEWXBandera, Medina63 min
Mar 16, 9:28 PM CSTSevere Thunderstorm WarningEWXFrio62 min
Mar 16, 9:58 PM CSTSevere Thunderstorm WarningEWXMedina62 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.