Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Austin/San Antonio, TX

May 17, 2021Fayette County, Gonzales County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at May 17, 2021, 3:16 PM CDT for Fayette County, Gonzales County, Texas. It was in force for 44 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 17, 2021, 3:16 PM CDT (20:16 UTC)
Expired: May 17, 2021, 4:00 PM CDT
In force: 44 min
Issued by: NWS Austin/San Antonio, TX

Counties Fayette County, TX, Gonzales County, TX

The radar

The Austin/San Antonio radar (KEWX), 90 km from the middle of the area, began a volume at 20:18 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

Corpus Christi, TX (KCRP), launched 12:00Z, 8.3 hours before the alert went out and 219 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: 2756 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 515 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted.

742 
WWUS84 KEWX 172016
SPSEWX

Special Weather Statement
National Weather Service Austin/San Antonio TX
316 PM CDT Mon May 17 2021
 
TXZ207>209-223-225-172100-
Guadalupe TX-Caldwell TX-Lavaca TX-Fayette TX-Gonzales TX-
316 PM CDT Mon May 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CALDWELL...EASTERN
GUADALUPE...GONZALES...FAYETTE AND NORTHWESTERN LAVACA COUNTIES UNTIL
400 PM CDT...

At 315 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Kingsbury to near Flatonia to near
Fayetteville. Movement was southwest at 20 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Seguin, Gonzales, Luling, La Grange, Schulenburg, Shiner, Flatonia,
Moulton, Shelby, Waelder, Kingsbury, Staples, Fayetteville, Round
Top, Fentress, Palmeto State Park, Muldoon, Cistern, Brownsboro and
Carmine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2963 9687 2961 9684 2958 9683 2957 9679
      2936 9720 2938 9724 2936 9727 2939 9799
      2976 9782 2981 9734 2979 9731 2981 9729
      2983 9713 3015 9668 3014 9665 2996 9657
TIME...MOT...LOC 2015Z 027DEG 16KT 2965 9776 2964 9715 2994 9662 

$$

BRADY

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 9:21 AM CDT	River Flood Warning	EWX	Frio	19 hr
May 17, 11:36 AM CDT	Special Weather Statement	EWX	Burnet	54 min
May 17, 11:58 AM CDT	Special Weather Statement	EWX	Burnet	47 min
May 17, 12:05 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	55 min
May 17, 1:00 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Travis, Williamson	60 min
May 17, 1:53 PM CDT	Special Weather Statement	EWX	Bastrop, Hays, Travis, Williamson	52 min
May 17, 2:34 PM CDT	Flash Flood Watch	EWX	Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 19 more	55 hr
May 17, 2:37 PM CDT	Special Weather Statement	EWX	Comal	38 min
May 17, 3:25 PM CDT	Areal Flood Advisory	EWX	Fayette	3 hr
May 17, 3:51 PM CDT	Special Weather Statement	EWX	Comal	39 min
May 17, 3:59 PM CDT	Special Weather Statement	EWX	Gonzales, Lavaca	61 min
May 17, 4:15 PM CDT	Areal Flood Advisory	EWX	Gonzales, Lavaca	2 hr
May 17, 5:05 PM CDT	Special Weather Statement	EWX	Lavaca	40 min
May 17, 6:08 PM CDT	Special Weather Statement	EWX	Val Verde	52 min
May 17, 6:11 PM CDT	Special Weather Statement	EWX	Dimmit	49 min
May 17, 6:46 PM CDT	Special Weather Statement	EWX	Dimmit	44 min
May 17, 6:48 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	41 min
May 17, 6:50 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	25 min

Nearby

Special Weather Statements in Texas, 2021 Every 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.