Alert archive / Texas / Tornado Warnings in 1987

Tornado Warning 12, NWS Lubbock, TX

July 7, 1987Lamb County, Texas

NWS Lubbock, TX issued this tornado warning at Jul 7, 1987, 8:31 PM CDT for Lamb County, Texas. It was in force for 44 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
Jul 7, 1987, 8:31 PM CDT (01:31 UTC)
Expired
Jul 7, 1987, 9:15 PM CDT
In force
44 min
Issued by
NWS Lubbock, TX
Area
Whole counties

County Lamb 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
Jul 7, 9:05 PM CDTTornado F0Lamb, 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.5 hours before the alert went out and 142 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, Amarillo Airport, TX at 00:00Z on 1987-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2614 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, Amarillo Airport, TX at 00:00Z on 1987-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
2614 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
2400 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
11.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBB 080131
TORLBB
TXC279-080215-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LUBBOCK TX
831 PM CDT TUE JUL 7 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL  915 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHWEST TEXAS
          ...LAMB
 
AT 830 PM CDT LUBBOCK RADAR INDICATED A POSSIBLE TORNADO NEAR THE
COMMUNITY OF BECK IN LAMB COUNTY. MOVEMENT WAS TO THE EAST SOUTHEAST
AT 10 MPH.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 8:19 PM CDTSevere Thunderstorm WarningLUBLamb56 min
Jul 7, 9:15 PM CDTSevere Thunderstorm WarningLUBBailey, Lamb60 min
Jul 7, 9:30 PM CDTTornado WarningLUBLamb60 min
Jul 7, 10:18 PM CDTSevere Thunderstorm WarningLUBHale, Lubbock57 min
Jul 7, 10:54 PM CDTSevere Thunderstorm WarningLUBLubbock66 min
Jul 8, 12:01 AM CDTSevere Thunderstorm WarningLUBLubbock44 min
Jul 8, 1:37 AM CDTSevere Thunderstorm WarningLUBMotley68 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.