Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 79, NWS San Angelo, TX

May 15, 2020McCulloch County, San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 15, 2020, 9:28 PM CDT for McCulloch County, San Saba County, Texas. It was in force for 62 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
May 15, 2020, 9:28 PM CDT (02:28 UTC)
Expired
May 15, 2020, 10:30 PM CDT
In force
62 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties McCulloch County, TX, San Saba County, TX

The radar

The San Angelo radar (KSJT), 136 km from the middle of the area, began a volume at 02:30 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 15, 2:55 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 2.5 hours before the alert went out and 250 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, Fort Worth, TX at 00:00Z on 2020-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1748 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, Fort Worth, TX at 00:00Z on 2020-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1748 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1447 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 7:02 PM CDTSevere Thunderstorm WarningSJTCoke, Concho, Runnels, Tom Green58 min
May 15, 7:07 PM CDTSpecial Weather StatementSJTSterling38 min
May 15, 7:10 PM CDTSevere Thunderstorm WarningSJTFisher, Jones, Nolan, Taylor65 min
May 15, 7:11 PM CDTAreal Flood AdvisorySJTSterling3 hr
May 15, 7:14 PM CDTSevere Thunderstorm WarningSJTCoke, Irion, Sterling, Tom Green44 min
May 15, 7:31 PM CDTSpecial Weather StatementSJTThrockmorton44 min
May 15, 7:40 PM CDTAreal Flood AdvisorySJTTom Green3 hr
May 15, 7:45 PM CDTSpecial Weather StatementSJTKimble, Menard45 min
May 15, 7:49 PM CDTSevere Thunderstorm WarningSJTThrockmorton56 min
May 15, 7:55 PM CDTSevere Thunderstorm WarningSJTCoke, Concho, Runnels, Tom Green65 min
May 15, 8:02 PM CDTSevere Thunderstorm WarningSJTKimble, Mason, Sutton43 min
May 15, 8:06 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford32 min
May 15, 8:28 PM CDTSevere Thunderstorm WarningSJTColeman, Concho, McCulloch62 min
May 15, 8:43 PM CDTSevere Thunderstorm WarningSJTThrockmorton25 min
May 15, 8:47 PM CDTSpecial Weather StatementSJTMason43 min
May 15, 8:57 PM CDTSpecial Weather StatementSJTCallahan48 min
May 15, 8:58 PM CDTSpecial Weather StatementSJTBrown47 min
May 15, 9:17 PM CDTSevere Thunderstorm WarningSJTBrown48 min
May 15, 10:28 PM CDTSpecial Weather StatementSJTSan Saba47 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020

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.