Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 237, NWS Lubbock, TX

October 21, 2015Briscoe County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Oct 21, 2015, 11:09 PM CDT for Briscoe County, Texas. It was in force for 36 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, 2015, 11:09 PM CDT (04:09 UTC)
Expired
Oct 21, 2015, 11:45 PM CDT
In force
36 min
Issued by
NWS Lubbock, TX
Area
Storm-based polygon
Tornado
Possible
Hail
1.75 in
Wind
70.0 mph

County Briscoe County, TX

The radar

The Amarillo radar (KAMA), 91 km from the middle of the area, began a volume at 04:13 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 00:00Z, 4.2 hours before the alert went out and 90 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 00:00Z on 2015-10-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 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 00:00Z on 2015-10-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
95 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1117 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 21, 11:17 PM CDTAreal Flood WarningLUBBailey, Parmer3 hr
Oct 21, 11:24 PM CDTSpecial Weather StatementLUBHockley, Lamb36 min
Oct 21, 11:46 PM CDTSevere Thunderstorm WarningLUBHockley, Lamb29 min
Oct 22, 12:11 AM CDTSpecial Weather StatementLUBHale19 min
Oct 22, 12:35 AM CDTAreal Flood AdvisoryLUBLubbock115 min
Oct 22, 12:52 AM CDTAreal Flood WarningLUBHockley, Lubbock, Lynn, Terry, Yoakum3 hr
Oct 22, 2:03 AM CDTAreal Flood AdvisoryLUBCastro, Hale, Lamb, Swisher3 hr
Oct 22, 2:12 AM CDTAreal Flood AdvisoryLUBBailey, Parmer2 hr
Oct 22, 3:47 AM CDTAreal Flood AdvisoryLUBCrosby, Floyd, Garza, Hale, Hockley, Lubbock and 2 more118 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015Every severe thunderstorm warning in 2015

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.