Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 306, NWS San Angelo, TX

August 14, 2015Irion County, Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Aug 14, 2015, 7:45 PM CDT for Irion County, Tom Green County, Texas. It was in force for 30 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
Aug 14, 2015, 7:45 PM CDT (00:45 UTC)
Expired
Aug 14, 2015, 8:15 PM CDT
In force
30 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Irion County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 22 km from the middle of the area, began a volume at 00:46 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

Midland Regional, TX (KMAF), launched 00:00Z, 0.8 hours before the alert went out and 155 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, Midland Regional, TX at 00:00Z on 2015-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1014 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, Midland Regional, TX at 00:00Z on 2015-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -93 square meters per square second.1939Sfc1 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
1014 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
2431 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-93 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 7:09 PM CDTSevere Thunderstorm WarningSJTIrion, Tom Green36 min
Aug 14, 7:34 PM CDTSevere Thunderstorm WarningSJTCoke, Irion, Tom Green26 min
Aug 14, 7:37 PM CDTSpecial Weather StatementSJTSterling53 min
Aug 14, 7:45 PM CDTAreal Flood AdvisorySJTIrion, Tom Green2 hr
Aug 14, 8:08 PM CDTSpecial Weather StatementSJTTom Green52 min
Aug 15, 2:56 PM CDTSpecial Weather StatementSJTKimble34 min
Aug 15, 3:54 PM CDTSpecial Weather StatementSJTKimble21 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.