Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 267, NWS Lubbock, TX

October 21, 2017Childress County, Cottle County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Oct 21, 2017, 6:08 PM CDT for Childress County, Cottle County, Texas. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 21, 2017, 6:08 PM CDT (23:08 UTC)
Expired
Oct 21, 2017, 6:45 PM CDT
In force
37 min
Issued by
NWS Lubbock, TX
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

Counties Childress County, TX, Cottle County, TX

The radar

The Altus AFB radar (KFDR), 117 km from the middle of the area, began a volume at 23:10 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.1 hours before the alert went out and 168 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, Amarillo Airport, TX at 12:00Z on 2017-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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, Amarillo Airport, TX at 12:00Z on 2017-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 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
17 J/kg
Mixed-layer CIN
-358 J/kg
Mixed-layer LCL
1925 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Lubbock, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 4:51 PM CDTSpecial Weather StatementLUBDickens24 min
Oct 21, 5:18 PM CDTSpecial Weather StatementLUBDickens27 min
Oct 21, 5:20 PM CDTSpecial Weather StatementLUBHockley25 min
Oct 21, 5:35 PM CDTSpecial Weather StatementLUBKing25 min
Oct 21, 5:45 PM CDTSpecial Weather StatementLUBChildress, Cottle30 min
Oct 21, 5:47 PM CDTSpecial Weather StatementLUBTerry28 min
Oct 21, 5:57 PM CDTSpecial Weather StatementLUBLubbock33 min
Oct 21, 6:15 PM CDTSpecial Weather StatementLUBLynn30 min
Oct 21, 6:16 PM CDTSpecial Weather StatementLUBDickens29 min
Oct 21, 6:43 PM CDTSpecial Weather StatementLUBDickens32 min
Oct 21, 6:44 PM CDTSpecial Weather StatementLUBLynn31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2017Every severe thunderstorm warning in 2017

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; radar from the NEXRAD Level II archive.