Alert archive / Texas / Tornado Warnings in 1987

Tornado Warning 15, NWS Houston/Galveston, TX

December 19, 1987Harris County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Dec 19, 1987, 1:57 PM CST for Harris County, Texas. It was in force for 48 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
Dec 19, 1987, 1:57 PM CST (19:57 UTC)
Expired
Dec 19, 1987, 2:45 PM CST
In force
48 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

County Harris 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
Dec 19, 2:25 PM CSTThunderstorm Wind 51Harris, 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 12:00Z, 8.0 hours before the alert went out and 184 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 12:00Z on 1987-12-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 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 12:00Z on 1987-12-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 216 square meters per square second.19395878Sfc1 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
35 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
599 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
216 m²/s²
0-3 km storm-relative helicity
359 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.

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 19, 11:43 AM CSTSevere Thunderstorm WarningHGXHouston, Walker62 min
Dec 19, 12:18 PM CSTTornado WarningHGXColorado57 min
Dec 19, 12:36 PM CSTSevere Thunderstorm WarningHGXAustin, Wharton54 min
Dec 19, 12:50 PM CSTSevere Thunderstorm WarningHGXPolk40 min
Dec 19, 1:23 PM CSTSevere Thunderstorm WarningHGXHarris52 min
Dec 19, 2:23 PM CSTSevere Thunderstorm WarningHGXLiberty52 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.