Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS San Angelo, TX

May 3, 2021Throckmorton County, Texas

NWS San Angelo, TX issued this special weather statement at May 3, 2021, 10:10 PM CDT for Throckmorton County, Texas. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 3, 2021, 10:10 PM CDT (03:10 UTC)
Expired
May 3, 2021, 11:15 PM CDT
In force
65 min
Issued by
NWS San Angelo, TX

County Throckmorton County, TX

The radar

The Dyess AFB radar (KDYX), 61 km from the middle of the area, began a volume at 03:14 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

Fort Worth, TX (KFWD), launched 00:00Z, 3.2 hours before the alert went out and 182 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 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3299 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 square meters per square second.1939587897Sfc1 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
3299 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1213 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
2.6
Supercell composite
13.9

Open this sounding in Storm Lab

The text

As transmitted.

664 
WWUS84 KSJT 040310
SPSSJT

Special Weather Statement
National Weather Service San Angelo TX
1010 PM CDT Mon May 3 2021
 
TXZ098-099-040415-
Haskell TX-Throckmorton TX-
1010 PM CDT Mon May 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HASKELL AND SOUTHERN
THROCKMORTON COUNTIES UNTIL 1115 PM CDT...

At 1008 PM CDT, Doppler radar was tracking a strong thunderstorm 
about 15 miles southeast of Haskell, moving east at 30 mph. 

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Throckmorton around 1045 PM CDT.
  Woodson around 1100 PM CDT.

Other locations impacted by this storm include The Intersection Of
Us-183 And Us-283 and The Intersection Of Us-380 And Highway 222.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
west central Texas.

LAT...LON 3302 9895 3300 9961 3316 9961 3325 9896
TIME...MOT...LOC 0308Z 266DEG 28KT 3308 9952 

$$

sn

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 7:24 PM CDTSevere Thunderstorm WarningSJTFisher, Jones, Nolan, Taylor39 min
May 3, 7:28 PM CDTSevere Thunderstorm WarningSJTNolan, Taylor36 min
May 3, 8:09 PM CDTSevere Thunderstorm WarningSJTFisher, Jones66 min
May 3, 8:48 PM CDTSevere Thunderstorm WarningSJTFisher, Nolan42 min
May 3, 9:05 PM CDTSevere Thunderstorm WarningSJTHaskell, Jones, Shackelford55 min
May 3, 9:32 PM CDTSpecial Weather StatementSJTJones43 min
May 3, 9:53 PM CDTSevere Thunderstorm WarningSJTShackelford, Throckmorton52 min
May 3, 10:14 PM CDTSpecial Weather StatementSJTShackelford31 min

Nearby

Special Weather Statements in Texas, 2021Every special weather statement in 2021

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.