Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 167, NWS Fort Worth, TX

April 21, 1990Cooke County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 21, 1990, 4:19 PM CDT for Cooke County, Texas. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Apr 21, 1990, 4:19 PM CDT (21:19 UTC)
Expired
Apr 21, 1990, 5:15 PM CDT
In force
56 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Cooke 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

Norman, OK (KOUN), launched 12:00Z, 9.3 hours before the alert went out and 177 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, Norman, OK at 12:00Z on 1990-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 369 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, Norman, OK at 12:00Z on 1990-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
369 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
789 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 21, 3:42 PM CDTSevere Thunderstorm WarningFWDMontague63 min
Apr 21, 5:11 PM CDTSevere Thunderstorm WarningFWDDenton49 min
Apr 21, 6:41 PM CDTSevere Thunderstorm WarningFWDDenton, Tarrant, Wise64 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990

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.