Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Austin/San Antonio, TX

March 28, 2021DeWitt County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Mar 28, 2021, 4:22 AM CDT for DeWitt County, Texas. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 28, 2021, 4:22 AM CDT (09:22 UTC)
Expired
Mar 28, 2021, 5:00 AM CDT
In force
38 min
Issued by
NWS Austin/San Antonio, TX

County DeWitt County, TX

The radar

The Austin/San Antonio radar (KEWX), 104 km from the middle of the area, began a volume at 09:26 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.

What was reported inside it

TimeReportWhereRemark
Mar 28, 4:38 AM CDTHAIL 0.53 Sw Cuero, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 9.4 hours before the alert went out and 140 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, Corpus Christi, TX at 00:00Z on 2021-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1763 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, Corpus Christi, TX at 00:00Z on 2021-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
1763 J/kg
Mixed-layer CIN
-218 J/kg
Mixed-layer LCL
1181 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

931 
WWUS84 KEWX 280922
SPSEWX

Special Weather Statement
National Weather Service Austin/San Antonio TX
422 AM CDT Sun Mar 28 2021
 
TXZ224-281000-
De Witt TX-
422 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR DEWITT COUNTY UNTIL 500 AM CDT...

At 421 AM CDT, Doppler radar was tracking a strong thunderstorm over
Cuero, moving east at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Cuero, Yoakum, Yorktown, Nordheim, Thomaston, Hochheim, Westhoff,
Cotton Patch, Edgar, Gruenau, Terryville, New Davy, Meyersville,
Arneckville and Concrete.

LAT...LON 2902 9709 2887 9730 2887 9732 2890 9734
      2889 9735 2892 9738 2892 9742 2881 9757
      2901 9775 2916 9754 2937 9723 2912 9699
TIME...MOT...LOC 0921Z 250DEG 12KT 2910 9728 

$$

HAMPSHIRE

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.