Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 64, NWS Fort Worth, TX

March 21, 1987Hamilton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 21, 1987, 8:28 PM CST for Hamilton County, Texas. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Mar 21, 1987, 8:28 PM CST (02:28 UTC)
Expired
Mar 21, 1987, 9:00 PM CST
In force
32 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Hamilton 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 00:00Z, 2.5 hours before the alert went out and 57 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 00:00Z on 1987-03-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1107 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 00:00Z on 1987-03-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897Sfc1 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
1107 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1395 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.5

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
Mar 21, 7:12 PM CSTSevere Thunderstorm WarningFWDComanche63 min
Mar 21, 7:34 PM CSTSevere Thunderstorm WarningFWDHamilton56 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; the sounding from the Mesonet's radiosonde archive.