Alert archive / Texas / Tornado Warnings in 1987

Tornado Warning 14, NWS Austin/San Antonio, TX

June 22, 1987Maverick County, Texas

NWS Austin/San Antonio, TX issued this tornado warning at Jun 22, 1987, 1:22 AM CDT for Maverick County, Texas. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
Jun 22, 1987, 1:22 AM CDT (06:22 UTC)
Expired
Jun 22, 1987, 2:00 AM CDT
In force
38 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County 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, 6.4 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 1987-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3748 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 1987-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
3748 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
1103 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
1.9
Supercell composite
11.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSAT 220622
TORSAT
TXC323-220700-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANTONIO TX
122 AM CDT MON JUN 22 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  200 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTH TEXAS
          ...MAVERICK
 
A FUNNEL CLOUD WAS SPOTTED NEAR QUEMADO IN WESTERN MAVERICK COUNTY AT
120AM WITH WINDS IN EXCESS OF 100 MPH. THE STORM PRODUCING THIS FUNNEL
CLOUD WAS MOVING TO THE EAST AT 30 MPH.
 
 
IF YOU ARE IN THE PATH OF THIS STORM...GO TO A BASEMENT SHELTER OR A
CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUILDING.
ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.

What forecasters said that day

The local office's own words before this tornado 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, Jun 21, 9:27 PM CDT, 3 hours 55 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
930 PM CDT SUN JUN 21 1987

       ...LINE OF THUNDERSTORMS APPROACHING HILL COUNTRY...

AT 920 PM CDT...NATIONAL WEATHER SERVICE RADAR WAS INDICATING A LINE OF
STRONG THUNDERSTORMS EXTENDING NORTH TO SOUTH ACROSS EXTREME EASTERN
VAL VERDE COUNTY.  MOVEMENT WAS EAST AT 30 MILES AN HOUR.  THIS MOVEMENT
WILL TAKE THE STORMS INTO WESTERN EDWARDS AND KINNEY COUNTIES WITHIN THE
NEXT HALF HOUR.

A DISTINCT SIGNATURE KNOWN TO BE ASSOCIATED WITH STRONG AND POSSIBLY
DAMAGING WIND HAS BEEN NOTED ON RADAR WITH THIS LINE OF STORMS.  IN
FACT...REPORTS IN AND AROUND THE DEL RIO AREA OF WIND GUSTS NEAR 50
MILES AN HOUR HAVE BEEN RECEIVED WITHIN THE PAST FEW MINUTES.

IN ADDITION TO STRONG WIND...RESIDENTS ACROSS THE HILL COUNTRY MAY
EXPERIENCE FREQUENT LIGHTNING...BRIEF HEAVY RAIN AND SMALL HAIL AS THESE
STORMS PASS.  STAY TUNED TO LOCAL RADIO...TV OR NOAA WEATHER RADIO FOR
ADDITIONAL STATEMENTS OR POSSIBLE WARNINGS.
Special weather statement, Jun 21, 10:09 PM CDT, 3 hours 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
1010 PM CDT SUN JUN 21 1987

...THUNDERSTORMS OBSERVED IN THE DEL RIO AREA...

AT 1005 PM CDT THUNDERSTORMS WITH RAIN...STRONG GUSTY WINDS AND
FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL RIO
INTERNATIONAL AIRPORT. A WIND GUST OF 48 MPH WAS OBSERVED AT THE
AIRPORT DURING THE PAST HOUR. RADAR ALSO INDICATED THUNDERSTORMS
THROUGHOUT VAL VERDE COUNTY. ALL OF THE STORMS WERE MOVING TO THE
EAST AT 30 MPH.
Special weather statement, Jun 21, 11:16 PM CDT, 2 hours 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
1115 PM CDT SUN JUN 21 1987

...THUNDERSTORMS ARE CONTINUING IN THE DEL RIO AREA...

A PERSISTENTLY INTENSE CLUSTER OF THUNDERSTORMS IN THE PAST HOUR HAS
BEEN SLOWLY MOVING CLOSER TO DEL RIO. AT 1105 PM CDT THIS CLUSTER OF
THUNDERSTORMS WAS ABOUT 15 MILES SOUTHWEST OF DEL RIO MOVING TO THE
NORTHEAST AT AROUND 15 MPH.

AT 1105 PM CDT RADAR INDICATED A BELT OF THUNDERSTORMS FROM SAN
ANGELO TO JUNCTION TO JUST NORTHWEST OF DEL RIO AND ON TO THE
SOUTHWEST FOR ABOUT 100 MILES INTO MEXICO. THUNDERSTORMS OF VERY
HEAVY TO INTENSE STRENGTH WERE OCCURRING FREQUENTLY IN THIS BELT.
OVER ALL MOVEMENT WAS TO THE EAST...BUT SHOWERS AND THUNDERSTORMS
HAVE CONTINUED TO REFORM IN AND TRAVERSE THE SAME AREAS DURING THE
LAST SEVERAL HOURS.

THESE STRONGER STORMS CAN BE EXPECTED TO CONTAIN FREQUENT DANGEROUS
LIGHTNING...DAMAGING WINDS...HEAVY RAIN...AND HAIL. ALL PERSONS ARE
URGED NOT TO TAKE& THESE HAZARDS LIGHTLY.
Special weather statement, Jun 21, 11:22 PM CDT, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
1120 PM CDT SUN JUN 21 1987

 ...THUNDERSTORMS OVER HILL COUNTRY AND EDWARDS PLATEAU DISSIPATING...

A LINE OF THUNDERSTORMS THAT PRODUCED STRONG WIND GUSTS...SMALL HAIL
AND HEAVY RAINS OVER VAL VERDE COUNTY EARLIER THIS EVENING IS SLOWLY
DISSIPATING OVER SECTIONS OF THE HILL COUNTRY AND EDWARDS PLATEAU.  AT
1115 PM CDT...RADAR WAS INDICATING ONLY LIGHT TO MODERATE SHOWERS
EXTENDING OVER MUCH OF EDWARDS...REAL AND KINNEY COUNTIES.  A FEW STRONG
THUNDERSTORMS REMAINED OVER NORTHERN MEXICO WITH ONLY A SLOW EASTWARD
MOVEMENT NOTED.

WIND GUSTS TO NEAR 50 MILES AN HOUR WERE REPORTED IN AND AROUND THE
DEL RIO AREA A LITTLE BEFORE 10 PM THIS EVENING.  IN ADDITION...PEA-
SIZED HAIL AND BRIEF HEAVY RAIN WERE REPORTED TO HAVE ACCOMPANIED THE
LINE OF STORMS AS IT MOVED ACROSS THE DEL RIO AREA.  DESPITE THE
REPORTS OF HIGH WIND AND HEAVY RAINFALL ACROSS VAL VERDE COUNTY...NO
REPORTS OF DAMAGE OR FLOODING WERE RECEIVED.

WITH THE COOL OF EVENING SETTING IN...DISSIPATION OF THIS LINE OF
STORMS IS EXPECTED TO CONTINUE.  THIS WILL BE THE LAST STATEMENT
ISSUED CONCERNING THIS WEATHER EVENT...UNLESS REDEVELOPMENT O(CCURS.
Special weather statement, Jun 22, 12:13 AM CDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DEL RIO TX
1215 AM CDT MON JUN 22 1987

...THUNDERSTORMS OBSERVED IN DEL RIO...

AT 1210 AM CDT THUNDERSTORMS WITH RAIN...WINDS GUSTING TO 36
MPH...AND FREQUENT DANGEROUS LIGHTNING WERE OBSERVED AT THE DEL
RIO INTERNATIONAL AIRPORT. RADAR ALSO INDICATED INTENSE THUNDERSTORMS
30 MILES SOUTHWEST OF DEL RIO. ALL STORMS WERE MOVING TO THE EAST AT
30 MPH.

WHEN OUTDOORS...MONITOR WEATHER CONDITIONS CLOSELY. IF THUNDER AND
LIGHTNING OCCUR...USE COMMON SENSE. SEEK SHELTER IN A LARGE BUILDING
OR AN ALL METAL AUTOMOBILE. IF SUCH SHELTER IS NOT AVAILABLE AVOID
STANDING UNDER A TALL SOLITARY TREE...A NATURAL LIGHTNING ROD...AND
DO NOT OFFER YOURSELF ASS A STANDING TARGET IN AN OPEN FIELD OR IN A
BOAT ON THE WATER.
Special weather statement, Jun 22, 12:15 AM CDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1210 AM CDT MON JUN 22 1987

WEATHER RADAR INDICATED SHOWERS AND THUNDERSTORMS THAT DEVELOPED OVER
WEST AND SOUTHWEST TEXAS EARLIER TONIGHT WAS MOVING ACROSS THE HILL
COUNTRY FROM NEAR LLANO SOUTHWARD ACROSS THE FREDERICKSBURG AREA THEN
SOUTHWEST INTO MEXICO NEAR DEL RIO.

THIS AREA OF THUNDERSTORMS WAS MOVING EASTWARD AT 25 TO 30 MPH AND
COULD PRODUCE LOCAL BRIEF HEAVY RAIN AND STRONG GTUSTY WINDS AS THEY
MOVE EASTWARD ACROSS THE HILL COUNTRY AND CENTRAL TEXAS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 1:12 AM CDTSevere Thunderstorm WarningEWXMaverick63 min
Jun 22, 1:44 AM CDTSevere Thunderstorm WarningEWXDimmit, Zavala61 min

Nearby

Tornado Warnings in Texas, 1987Every tornado warning in 1987Tornadoes 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.