Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Austin/San Antonio, TX

August 2, 2021Bexar County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Aug 2, 2021, 7:29 AM CDT for Bexar County, Texas. It was in force for 46 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
Aug 2, 2021, 7:29 AM CDT (12:29 UTC)
Expired
Aug 2, 2021, 8:15 AM CDT
In force
46 min
Issued by
NWS Austin/San Antonio, TX

County Bexar County, TX

The radar

The Austin/San Antonio radar (KEWX), 69 km from the middle of the area, began a volume at 12:32 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, 0.5 hours before the alert went out and 205 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, Del Rio, TX at 12:00Z on 2021-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 241 joules per kilogram.LCLLFCEL10008507005003002001001 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, Del Rio, TX at 12:00Z on 2021-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939Sfc1 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
241 J/kg
Mixed-layer CIN
-123 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

760 
WWUS84 KEWX 021229
SPSEWX

Special Weather Statement
National Weather Service Austin/San Antonio TX
729 AM CDT Mon Aug 2 2021
 
TXZ187-189-204>206-021315-
Comal TX-Bexar TX-Medina TX-Bandera TX-Kendall TX-
729 AM CDT Mon Aug 2 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MEDINA...
SOUTHEASTERN BANDERA...SOUTHWESTERN KENDALL...NORTHWESTERN BEXAR AND
WEST CENTRAL COMAL COUNTIES UNTIL 815 AM CDT...

At 729 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Fair Oaks Ranch to 6 miles southeast of
Kronkosky State Natural Area to near Mico. Movement was east at 20
mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
San Antonio, Boerne, Canyon Lake, Leon Valley, Helotes, Fair Oaks
Ranch, Bulverde, Shavano Park, Hollywood Park, Cross Mountain,
Smithson Valley, Bandera Falls, The Dominion, Mico, Government Canyon
State Natural Area, Pipe Creek, Sea World, Lakehills, Lackland AFB
and Cliff.

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.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2944 9902 2977 9898 2983 9879 2982 9826
      2962 9846 2935 9862
TIME...MOT...LOC 1229Z 276DEG 18KT 2976 9868 2966 9882 2950 9890 

$$

BRADY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 7:53 PM CDTAreal Flood AdvisoryEWXBandera, Real3 hr
Aug 1, 11:02 PM CDTAreal Flood AdvisoryEWXKendall3 hr
Aug 2, 12:27 AM CDTAreal Flood AdvisoryEWXBastrop, Hays, Travis3 hr
Aug 2, 3:45 AM CDTAreal Flood AdvisoryEWXComal, Guadalupe, Hays4 hr
Aug 2, 3:53 AM CDTAreal Flood AdvisoryEWXEdwards, Kinney4 hr
Aug 2, 4:09 AM CDTFlash Flood Warning Considerable damage threatEWXComal, Guadalupe4 hr
Aug 2, 4:13 AM CDTAreal Flood AdvisoryEWXUvalde4 hr
Aug 2, 5:41 AM CDTFlash Flood Warning Considerable damage threatEWXGuadalupe4 hr
Aug 2, 5:45 AM CDTAreal Flood AdvisoryEWXBexar, Guadalupe, Wilson3 hr
Aug 2, 5:51 AM CDTAreal Flood AdvisoryEWXBandera, Real3 hr
Aug 2, 5:57 AM CDTAreal Flood AdvisoryEWXComal, Hays4 hr
Aug 2, 6:37 AM CDTAreal Flood AdvisoryEWXBandera, Kerr, Medina4 hr
Aug 2, 6:37 AM CDTFlash Flood Warning Considerable damage threatEWXComal5 hr
Aug 2, 6:52 AM CDTFlash Flood Warning Considerable damage threatEWXHays3 hr
Aug 2, 7:15 AM CDTAreal Flood AdvisoryEWXBandera, Bexar, Comal, Kendall, Kerr, Medina5 hr
Aug 2, 7:47 AM CDTFlash Flood Warning Considerable damage threatEWXBexar, Comal, Kendall4 hr
Aug 2, 8:13 AM CDTAreal Flood AdvisoryEWXKinney3 hr
Aug 2, 8:15 AM CDTAreal Flood AdvisoryEWXBastrop, Lee, Travis, Williamson5 hr
Aug 2, 8:18 AM CDTSpecial Weather StatementEWXBexar, Comal42 min
Aug 2, 8:26 AM CDTAreal Flood AdvisoryEWXBexar, Comal, Kendall4 hr
Aug 2, 8:36 AM CDTAreal Flood AdvisoryEWXBexar4 hr
Aug 2, 9:16 AM CDTAreal Flood AdvisoryEWXBlanco, Hays, Travis3 hr
Aug 2, 10:25 AM CDTAreal Flood AdvisoryEWXKinney, Maverick, Uvalde, Zavala3 hr
Aug 2, 2:45 PM CDTAreal Flood AdvisoryEWXBandera, Edwards, Kerr, Real, Val Verde3 hr
Aug 2, 4:56 PM CDTAreal Flood AdvisoryEWXTravis, Williamson3 hr
Aug 2, 5:12 PM CDTAreal Flood AdvisoryEWXBlanco, Hays3 hr
Aug 2, 6:19 PM CDTAreal Flood AdvisoryEWXCaldwell, Hays, Travis2 hr

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.