Alert archive / Texas / Heat Advisories in 2023

Heat Advisory 21, NWS San Angelo, TX

August 11, 2023Crockett County, Schleicher County, Sutton County, Texas

NWS San Angelo, TX issued this heat advisory at Aug 11, 2023, 2:34 PM CDT for Crockett County, Schleicher County, Sutton County, Texas. It took effect at Aug 12, 2023, 1:00 PM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Aug 11, 2023, 2:34 PM CDT (19:34 UTC)
In effect from: Aug 12, 2023, 1:00 PM CDT
Expired: Aug 12, 2023, 9:00 PM CDT
In force: 8 hr
Issued by: NWS San Angelo, TX

Counties Crockett County, TX, Schleicher County, TX, Sutton County, TX

The radar

The San Angelo radar (KSJT), 81 km from the middle of the area, began a volume at 19:36 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

Del Rio, TX (KDRT), launched 12:00Z, 7.6 hours before the alert went out and 149 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1341 J/kg
Mixed-layer CIN: -303 J/kg
Mixed-layer LCL: 1168 m above ground
0-6 km bulk shear: 1 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 7:18 PM CDT	Special Weather Statement	SJT	Callahan	27 min
Aug 10, 7:34 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Shackelford, Taylor	41 min
Aug 10, 7:39 PM CDT	Special Weather Statement	SJT	Tom Green	51 min
Aug 10, 7:48 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	42 min
Aug 10, 8:01 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Tom Green	59 min
Aug 10, 8:16 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman, Concho, McCulloch, Runnels and 2 more	59 min
Aug 10, 8:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	SJT	Tom Green	60 min
Aug 10, 8:43 PM CDT	Areal Flood Advisory	SJT	Brown, Callahan, Coleman	3 hr
Aug 10, 10:36 PM CDT	Special Weather Statement	SJT	Jones	39 min
Aug 11, 12:57 AM CDT	Special Weather Statement	SJT	Fisher	48 min
Aug 11, 3:04 AM CDT	Special Weather Statement	SJT	Taylor	41 min
Aug 11, 2:33 PM CDT	Red Flag Warning	SJT	Brown, Callahan, Coke, Coleman, Concho, Crockett and 18 more	30 hr
Aug 11, 2:34 PM CDT	Excessive Heat Warning	SJT	Brown, Callahan, Coke, Coleman, Concho, Fisher and 15 more	30 hr

Nearby

Heat Advisories in Texas, 2023 Every heat advisory in 2023

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.