Alert archive / Texas / Tornado Warnings in 1991

Tornado Warning 5, NWS San Angelo, TX

May 4, 1991Runnels County, Texas

NWS San Angelo, TX issued this tornado warning at May 4, 1991, 1:21 PM CDT for Runnels County, Texas. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
May 4, 1991, 1:21 PM CDT (18:21 UTC)
Expired
May 4, 1991, 2:00 PM CDT
In force
39 min
Issued by
NWS San Angelo, TX
Area
Whole counties

County Runnels County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 12:00Z, 6.4 hours before the alert went out and 182 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 12:00Z on 1991-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1326 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 12:00Z on 1991-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
1326 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
81 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 San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 12:16 PM CDTSevere Thunderstorm WarningSJTRunnels59 min
May 4, 12:44 PM CDTSevere Thunderstorm WarningSJTConcho, McCulloch61 min
May 4, 1:54 PM CDTSevere Thunderstorm WarningSJTMcCulloch, Mason66 min

Nearby

Tornado Warnings in Texas, 1991Every tornado warning in 1991Tornadoes in 1991

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.