Alert archive / Texas / Tornado Warnings in 1987

Tornado Warning 40, NWS Fort Worth, TX

August 11, 1987Brown County, Texas

NWS Fort Worth, TX issued this tornado warning at Aug 11, 1987, 2:06 PM CDT for Brown County, Texas. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1987, 2:06 PM CDT (19:06 UTC)
Expired
Aug 11, 1987, 2:45 PM CDT
In force
39 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Brown 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

Stephenville/Cla, TX (KSEP), launched 12:00Z, 7.1 hours before the alert went out and 98 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, Stephenville/Cla, TX at 12:00Z on 1987-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1639 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, Stephenville/Cla, TX at 12:00Z on 1987-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
1639 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
1286 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
103 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 KABI 111906
TORABI
TXC049-111945-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ABILENE TX
206 PM CDT TUE AUG 11 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  245 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH CENTRAL TEXAS
          ...BROWN
 
AT 205PM CDT...A TORNADO WAS REPORTED BY THE DEPARTMENT OF PUBLIC
SAFETY 2 MILES EAST OF BROWNWOOD. STRONG THUNDERSTORMS ARE INDICATED
EAST AND SOUTHWEST OF BROWNWOOD AND ARE DRIFTING SLOWLY TO THE
NORTHEAST.
 
IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT OR
INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A REINFORCED BUILDING.
AS A LAST RESORT...TAKE COVER IN A DITCH OR LOW SPOT AND COVER YOUR
HEAD WITH YOUR HANDS.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 12:57 PM CDTSevere Thunderstorm WarningFWDHamilton48 min
Aug 11, 2:47 PM CDTSevere Thunderstorm WarningFWDComanche58 min
Aug 11, 5:56 PM CDTSevere Thunderstorm WarningFWDTarrant39 min
Aug 11, 5:56 PM CDTSevere Thunderstorm WarningFWDEllis64 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.