Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 77, NWS Austin/San Antonio, TX

May 25, 1986Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 25, 1986, 5:55 AM CDT for Val Verde County, Texas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
May 25, 1986, 5:55 AM CDT (10:55 UTC)
Expired
May 25, 1986, 6:55 AM CDT
In force
60 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

County Val Verde 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, 10.9 hours before the alert went out and 66 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 1986-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1948 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 1986-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939Sfc1 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
1948 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
1693 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDRT 251055
SVRDRT
TXC465-251155-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DEL RIO TX
555 AM CDT SUN MAY 25 1986 

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 655 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY IN

SOUTHCENTRAL TEXAS...VAL VERDE.

AT 540 AM CDT VIOLENT THUNDERSTORMS WERE IN THE NORTHERN PART OF VAL
VERDE COUNTY NEAR HIGHWAY 163 IN THE JUNO AREA..50 MILES NORTH
NORTHWEST OF DEL RIO TEXAS AND THE VERY STRONG THUNDERSTORM LINE
EXTENDED TO NEAR ROCK SPRINGS.  THESE STORMS WERE MOVING TO THE
SOUTHEAST AT 30 MPH.

THESE ARE VERY DANGEROUS STORMS. PEOPLE IN THEIR PATH SHOULD MOVE TO A
REINFORCED SHELTER IMMEDIATELY AND BE PREPARED FOR LARGE
HAIL..DAMAGING WINDS..HEAVY RAINS AND FREQUENT LIGHTNING.

TO REPORT LARGE HAIL OR DAMAGING WINDS..ASK THE NEAREST LAW
ENFORCEMENT AGENCY TO RELAY YOUR REPORT TO THE NEAREST NATIONAL
WEATHER SERVICE OFFICE.

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 25, 12:37 AM CDT, 5 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
1235 AM CDT SUN MAY 25 1986

WEATHER RADAR SHOWS THUNDERSTORMS FROM LAKE TRAVIS AREA ACROSS NORTH
AUSTIN THEN NORTHEAST TO NEAR CAMERON.

HEAVIEST THUNDERSTORM WAS LOCATED NORTH OF ELGIN WHILE MOST OTHER
THUNDERSTORMS HAVE DECREASED IN INTENSTY AND AREA.

THUNDERSTORMS ARE MOVING TOWARD THE SOUTHEAST AT 15 TO 20 MPH

THESE THUNDERSTORMS COULD PRODUCE STRONG GUSTY WINDS AND LOCAL HEAVY
RAINS AS THEY MOVE THROUGH CENTRAL TEXAS.
Special weather statement, May 25, 2:53 AM CDT, 3 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
253 PM CDT SUN MAY 25 1986

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF SOUTH CENTRAL TEXAS..
THE TEXAS HILL COUNTRY AND PORTIONS OF THE EDWARDS PLATEAU...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
THE PORTION OF SOUTH TEXAS WEST AND NORTH OF A LINE FROM COLLEGE STATION
TO VICTORIA TO NORTH OF DEL RIO.  THE CITIES OF AUSTIN..BRYAN-COLLEGE
STATION..AND SAN ANTONIO ARE INCLUDED IN THE WATCH.  THE CITIES OF DEL
RIO AND VICTORIA ARE NOT INCLUDED IN THE WATCH AREA.

AN AREA OF HEAVY THUNDERSTORMS CONTINUED TO MOVE SOUTHEASTWARD ACROSS
THE TEXAS HILL COUNTRY EARLY THIS MORNING.  AT 245 AM CDT THE AREA WAS
ALONG AND 40 MILES EITHER SIDE OF A LINE FROM LLANO TO JUST NORTHWEST OF
ROCKSPRINGS.  THE AREA WAS MOVING TO THE SOUTHEAST AT NEAR 30 MILES AN
HOUR. SEVERE WEATHER IS POSSIBLE AS THESE STORMS MOVE ACROSS THE HILL
COUNTRY AND INTO SOUTH CENTRAL TEXAS.  LARGE HAIL..DAMAGING WINDS AND
BRIEF BUT VERY HEAVY RAINFALL COULD OCCUR.

EVERYONE IS URGED TO MONITOR A SOURCE OF WEATHER INFORMATION AS THE
STORMS APPROACH.  SEVERE WEATHER REPORTS SHOULD BE PASSED TO THE NEAREST
LAW ENFORCEMENT AGENCY FOR ALERT TO THE LOCAL COMMUNITIES AND RELAY TO
THE NATIONAL WEATHER SERVICE.
Special weather statement, May 25, 3:53 AM CDT, 2 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
350 AM CDT SUN MAY 25 1986

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR TRAVIS AND ALL SURROUNDING
COUNTIES OF CENTRAL TEXAS UNTIL 9AM CDT THIS MORNING.

WEATHER RADAR SHOWS A LINE OF THUNDERSTORMS FROM NEAR COMMANCHE SOUTH
THROUGH SAN SABA AREA TO SOUTHEAST OF JUNCTION.

HEAVIEST THUNDERSTORMS WERE LOCATED FROM NEAR MASON TO EAST OF JUNCTION
AND EAST OF SAN SABA.

THUNDERSTORMS ARE ?MOVING TOWARD THE SOUTH SOUTHEAST AT NEAR 25 MPH.

THESE THUNDERSTORMS COULD PRODUCE STRONG GUSTY WINDS AND LOCAL HEAVY
RAINS AS THEY MOVE ACROSS THE HILL COUNTRY.
Special weather statement, May 25, 4:22 AM CDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
420 AM CDT SUN MAY 25 1986

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE HILL COUNTRY AND
   ADJACENT PORTIONS OF SOUTH CENTRAL TEXAS UNTIL 900 AM...

HEAVY THUNDERSTORMS CONTINUE OVER MUCH OF THE TEXAS HILL COUNTRY THIS
MORNING.  AT 410 AM CDT..A FAIRLY BROAD LINE OF THUNDERSTORMS EXTENDED
FROM EAST OF JUNCTION SOUTHWESTWARD INTO EXTREME NORTHEASTERN EDWARDS
COUNTY.  THE HEAVIEST STORMS WERE LOCATED IN NORTHEAST EDWARDS COUNTY
ABOUT 25 MILES NORTHEAST OF ROCKSPRINGS.  MOVEMENT WAS TO THE SOUTHEAST
AT 35 MILES AN HOUR.  REPORTS OF EXTREMELY HEAVY RAIN..BRIEF BUT STRONG
GUSTY WIND AND PEA-SIZE HAIL WERE RECEIVED AS THIS LINE OF STORMS MOVED
ACROSS THE JUNCTION AREA AROUND 300 AM THIS MORNING.

A SECOND LINE OF THUNDERSTORMS HAS DEVELOPED WITHIN THE PAST COUPLE OF
HOURS NEAR THE INTERSECTION OF VAL VERDE AND EDWARDS COUNTIES.  THESE
..TOO..WERE MOVING SOUTHEAST AT 35 MILES AN HOUR.
<
ALTHOUGH NO REPORTS OF SEVERE WEATHER HAVE YET BEEN RECEIVED AT THE
WEATHER OFFICE IN SAN ANTONIO..RESIDENTS ARE REMINDED THAT CONDITIONS
ARE FAVORABLE FOR THE OCCURRENCE OF LARGE HAIL AND STRONG DAMAGING WIND.
INQ ADDITION..SEVERE THUNDERSTORMS CAN AND OFTEN DO PRODUCE TORNADOES.

CONTINUE TO MONITOR LOCAL RADIO..TELEVISION OR NOAA WEATHER RADIO
THROUGHOUT THE REMAINDER OF THIS MORNING FOR ADDITIONAL WEATHER
STATEMENTS AND/OR WARNINGS.
Special weather statement, May 25, 5:30 AM CDT, 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
525 AM CDT SUN MAY 25 1986

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR TRAVIS AND ALL SURROUNDING
COUNTIES OF CENTRAL TEXAS UNTIL 9AM CDT THIS MORNING.

WEATHER RADAR SHOWS A LINE OF THUNDERSTORMS FROM NEAR LAMPASAS SOUTH
WEST THROUGH THE MARBLE FALL AND JOHNSON CITY AREAS TO SOUTHWEST OF
KERRVILLE. THESE THUNDERSTORMS WERE IN A LARGE AREA OF RAIN THAT
EXTENDED FROM NEAR FORT WORTH SOUTHWEST TO NORTHEAST OF DEL RIO.

HEAVIEST THUNDERSTORMS WERE LOCATED ACROSS LLANO COUNTY AND SOUTHWEST
OF KERRVILLE.

THUNDERSTORMS ARE MOVING TOWARD THE SOUTH SOUTHEAST AT NEAR 30 MPH.

THESE THUNDERSTORMS COULD PRODUCE STRONG GUSTY WINDS AND BRIEF LOCAL
HEAVY RAIN.

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 8:20 PM CDTSevere Thunderstorm WarningEWXLampasas, Mills55 min
May 25, 6:50 AM CDTSevere Thunderstorm WarningEWXVal Verde60 min
May 25, 4:28 PM CDTFlash Flood WarningEWXBexar4 hr
May 25, 6:11 PM CDTTornado WarningEWXGoliad64 min

Nearby

Severe Thunderstorm Warnings in Texas, 1986Every severe thunderstorm warning in 1986

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.