Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 10, NWS Austin/San Antonio, TX

February 27, 1987Lavaca County, Victoria County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Feb 27, 1987, 9:25 PM CST for Lavaca County, Victoria County, Texas. It was in force for 65 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
Feb 27, 1987, 9:25 PM CST (03:25 UTC)
Expired
Feb 27, 1987, 10:30 PM CST
In force
65 min
Issued by
NWS Austin/San Antonio, TX
Area
Whole counties

Counties Lavaca County, TX, Victoria 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
Feb 27, 9:43 PM CSTThunderstorm Wind 0Victoria, 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 00:00Z, 3.4 hours before the alert went out and 27 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 00:00Z on 1987-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 878 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 00:00Z on 1987-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
878 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
827 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Feb 27, 6:01 PM CST, 3 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
559 PM CST FRI FEB 27 1987

...A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 615 PM THIS EVENING
FOR REAL COUNTY...
...A TORNADO WATCH IS IN EFFECT TONIGHT FOR MUCH OF THE HILL COUNTRY
   AND ADJACENT PORTIONS OF SOUTH CENTRAL TEXAS...

A LINE OF THUNDERSTORMS...CONTAINING VERY HEAVY RAIN...AND THE POTENTIAL
FOR LARGE HAIL AND DAMAGING WINDS...WAS MOVING EASTWARD AT NEAR 30 MILES
AN HOUR FROM THE TEXAS HILL COUNTRY AT 555 PM.  THE LINE STRETCHED FROM
NORTHERN MEXICO TO NEAR CRYSTAL CITY TO NEAR LEAKEY.

RADAR HAD INDICATED POSSIBLE LARGE HAIL IN A PORTION OF THE LINE THAT
WAS MOVING ACROSS REAL COUNTY ABOUT 530 PM THIS EVENING.  SO FAR...ONLY
SMALL HAIL...WINDS GUSTING TO NEAR 50 MPH AND VERY HEAVY RAIN HAS BEEN
REPORTED IN THESE STORMS.

THE PUBLIC IS REQUESTED TO CALL ANY REPORTS OF SEVERE WEATHER TO THE
NEAREST LAW ENFORECEMENT AGENCY FOR RELAY TO ]THE NATIONAL WEATHER
SERVICE.
Special weather statement, Feb 27, 6:16 PM CST, 3 hours 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
615PM CST FRI FEB 27 1987

...TORNADO WATCH IN EFFECT UNTIL 11PM TONIGHT...

AT 605 PM AUSTIN WEATHER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS
FROM JUST NORTH OF JUNCTION TO WEST OF FREDERICKSBURG AND KERRVILLE
AND ON SOUTH TO NEAR COTULLA.  THAT LINE WAS MOVING TOWARDS THE EAST
AT NEAR 30 MPH.

HAIL...MOSTLY SMALL...AND HIGH WINDS HAVE BEEN REPORTED WITH THESE
STORMS AS THnEY MOVED INTO THE FAR WESTERN HILL COUNTRY.

PERSONS IN CENTRAL TEXAS SHOULD KEEP ABREAST OF THE LATEST WEATHER
INFORMATION AND LISTEN FOR POSSIBLE WARNINGS LATER THIS EVENING.
Special weather statement, Feb 27, 6:55 PM CST, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
655 PM CST FRI FEB 27 1987

...A TORNADO WATCH IS IN EFFECT TONIGHT FOR MUCH OF THE TEXAS HILL
COUNTRY AND SOUTH CENTRAL TEXAS UNTIL 1100 TONIGHT...

A LINE OF THUNDERSTORMS WAS LOCATED BY WEATHER SERVICE RADAR FROM NEAR
BOERNE TO THE WESTERN EDGE OF SAN ANTONIO TO NEAR LAREDO AT 700 PM THIS
EVENING.  THE LINE WAS MOVING EASTWARD AT NEAR 35 MILES AN HOUR.  AT THE
PRESENT MOVEMENT...THESE STORMS WILL BE IN THE SAN ANTONIO METROPLEX BY
730 PM THIS EVENING.

SO FAR THIS LINE OF STORMS HAS NOT PRODUCED SEVERE WEATHER...ONLY VERY
HEAVY RAIN AND VERY STRONG WEST WINDS.  THE WINDS WERE ACTUALLY STRONGER
AFTER THE STORM LINE HAD PASSES THAN WHILE THE STORMS WERE OCCURRING.
GUSTS WERE REPORTED TO NEAR 50 MILES AN HOUR AT DEL RIO AS THE STORM
SYSTEM PASSED.

THESE STORMS HAVE THE POTENTIAL OF PRODUCING LARGE HAIL...DAMAGING WIND
AND EVEN TORNADOES AS THEY CROSS SOUTH CENTRAL TEXAS TONIGHT.

THE PUBLIC IS REQUESTED TO CALL ANY REPORTS OF SEVERE WEATHER TO THE
NEAREST LAW ENFORECEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER
SERVICE.
Special weather statement, Feb 27, 6:58 PM CST, 2 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN TX
655 PM CST FRI FEB 27 1987

...INTENSE THUNDERSTORM OVER SOUTHERN LLANO COUNTY...

AN INTENSE THUNDERSTORM OVER SOUTHERN LLANO COUNTY IS MOVING
TOWARDS THE EAST AT NEAR 45 MPH. PERSONS IN SOUTHERN LLANO COUNTY
AND PERSONS ON THE COLORADO RIVER BETWEEN MARBLE FALLS AND LAKE
BUCHANAN SHOULD STAY ALERT FOR GUSTY WINDS TO NEAR 50 MPH...SMALL HAIL
AND BRIEF HEAVY RAINS.
Special weather statement, Feb 27, 7:45 PM CST, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANTONIO TX
745 PM CST FRI FEB 27 1987

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 815 PM THIS EVENING FOR
ATASCOSA AND BEXAR COUNTIES...
...A TORNADO WATCH IS IN EFFECT TONIGHT FOR SOUTH CENTRAL TEXAS UNTIL
1100 PM TONIGHT...

A LINE OF THUNDERSTORMS FROM NEAR LLANO TO BOERNE TO JUST WEST OF SAN
ANTONIO TO NEAR COTULLA AT 740 PM CONTINUED TO MOVE EASTWARD AT NEAR 35
MILES AN HOUR.  STORMS WITHIN THIS LINE HAVE THE POTENTIAL TO PRODUCE
SEVERE WEATHER IN THE FORM OF DAMAGING WIND...LARGE HAIL AND PERHAPS
EVEN A TORNADO AS THE SYSTEM MOVES EASTWARD INTO DEEPER MOISTURE.

NUMEROUS REPORTS OF SMALL HAIL AND STRONG WIND HAVE BEEN RECEIVED FROM
THE STORMS IN THIS LINE.  AT 730 PM...HAM RADIO SPOTTERS IN BEXAR COUNTY
REPORTED PEA SIZED HAIL AS THE STORM SYSTEM MOVED INTO THE SOUTHWEST
CORNER OF BEXAR COUNTY.
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THE PUBLIC IS REQUESTED TO CALL ANY REPORTS OF SEVERE WEATHaER TO THE
NEAREST LAW ENFORECEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER
SERVICE.
Special weather statement, Feb 27, 9:18 PM CST, 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 27, 7:12 PM CSTSevere Thunderstorm WarningEWXAtascosa, Bexar63 min
Feb 27, 7:18 PM CSTSevere Thunderstorm WarningEWXBurnet, Llano57 min
Feb 27, 7:54 PM CSTSevere Thunderstorm WarningEWXComal, Guadalupe66 min
Feb 27, 7:54 PM CSTSevere Thunderstorm WarningEWXWilson66 min
Feb 27, 8:22 PM CSTSevere Thunderstorm WarningEWXGonzales, Karnes53 min
Feb 27, 8:52 PM CSTSevere Thunderstorm WarningEWXDeWitt68 min
Feb 27, 9:55 PM CSTSevere Thunderstorm WarningEWXJackson60 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.