Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this special weather statement at Oct 15, 2021, 3:34 PM CDT for Bexar County, Texas. It was in force for 41 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
- Oct 15, 2021, 3:34 PM CDT (20:34 UTC)
- Expired
- Oct 15, 2021, 4:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Austin/San Antonio, TX
- Hail
- 0.75 in
- Wind
- 50
County Bexar County, TX
The radar
The Austin/San Antonio radar (KEWX), 61 km from the middle of the area, began a volume at 20:37 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, 8.6 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.
- Mixed-layer CAPE
- 1893 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 663 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.9
The text
As transmitted.
419
WWUS84 KEWX 152034
SPSEWX
Special Weather Statement
National Weather Service Austin/San Antonio TX
334 PM CDT Fri Oct 15 2021
TXZ205-152115-
Bexar TX-
334 PM CDT Fri Oct 15 2021
...A strong thunderstorm will impact portions of central Bexar County
through 415 PM CDT...
At 334 PM CDT, Doppler radar was tracking a strong thunderstorm over
Sea World, or 8 miles west of San Antonio, moving east at 25 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
San Antonio, Universal City, Live Oak, Selma, Stinson Municipal
Airport, San Antonio Int Airport, Leon Valley, Helotes, Kirby, Alamo
Heights, Windcrest, Terrell Hills, Shavano Park, Olmos Park, China
Grove, Lackland AFB, Sea World, Converse, Castle Hills and Balcones
Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 2938 9875 2956 9873 2958 9831 2931 9835
TIME...MOT...LOC 2034Z 276DEG 21KT 2947 9866
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
$$
HAMPSHIREThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 8:35 PM CDT | River Flood Warning | EWX | Karnes, Wilson | 36 hr |
| Oct 14, 8:44 PM CDT | River Flood Warning | EWX | Goliad, Karnes | 3 days |
| Oct 15, 3:58 PM CDT | Flash Flood Warning | EWX | Bexar | 112 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.