Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 441, NWS Fort Worth, TX

September 30, 1986Callahan County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 30, 1986, 7:40 PM CDT for Callahan County, Texas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Sep 30, 1986, 7:40 PM CDT (00:40 UTC)
Expired
Sep 30, 1986, 8:40 PM CDT
In force
60 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Callahan 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, 0.7 hours before the alert went out and 120 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 1986-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2042 joules per kilogram.LCLEL10008507005003002001001 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 1986-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
2042 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1225 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.5

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
Sep 30, 7:10 PM CDTTornado WarningFWDTaylor50 min
Oct 1, 3:05 AM CDTSevere Thunderstorm WarningFWDHaskell55 min
Oct 1, 4:00 AM CDTSevere Thunderstorm WarningFWDThrockmorton60 min

Nearby

Severe Thunderstorm Warnings in Texas, 1986Every severe thunderstorm warning in 1986

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.