Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 72, NWS Fort Worth, TX

April 13, 1987Falls County, McLennan County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 13, 1987, 7:54 AM CDT for Falls County, McLennan County, Texas. It was in force for 51 min. 3 reports 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
Apr 13, 1987, 7:54 AM CDT (12:54 UTC)
Expired
Apr 13, 1987, 8:45 AM CDT
In force
51 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

Counties Falls County, TX, McLennan 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
Apr 13, 7:55 AM CDTThunderstorm Wind 0Mclennan, TX
Apr 13, 8:15 AM CDTThunderstorm Wind 0Mclennan, TX
Apr 13, 8:20 AM CDTThunderstorm Wind 0Falls, 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

Longview/Gregg, TX (KGGG), launched 12:00Z, 0.9 hours before the alert went out and 256 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, Longview/Gregg, TX at 12:00Z on 1987-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1954 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, Longview/Gregg, TX at 12:00Z on 1987-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 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
1954 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.8

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 Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 7:17 AM CDTSevere Thunderstorm WarningFWDBell, Coryell58 min
Apr 13, 8:28 AM CDTSevere Thunderstorm WarningFWDLimestone62 min
Apr 13, 8:34 AM CDTSevere Thunderstorm WarningFWDFreestone, Navarro56 min
Apr 13, 9:14 AM CDTSevere Thunderstorm WarningFWDHenderson, Kaufman, Van Zandt61 min
Apr 13, 9:14 AM CDTSevere Thunderstorm WarningFWDLeon, Robertson61 min
Apr 13, 9:41 AM CDTSevere Thunderstorm WarningFWDBrazos, Madison64 min
Apr 13, 10:08 AM CDTSevere Thunderstorm WarningFWDHopkins, Rains67 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.