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 Jul 13, 2021, 3:11 PM CDT for 4 counties in Texas. It was in force for 64 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
- Jul 13, 2021, 3:11 PM CDT (20:11 UTC)
- Expired
- Jul 13, 2021, 4:15 PM CDT
- In force
- 64 min
- Issued by
- NWS Austin/San Antonio, TX
Counties Bastrop County, TX, Blanco County, TX, Hays County, TX, Travis County, TX
The radar
The Ft Hood radar (KGRK), 49 km from the middle of the area, began a volume at 20:13 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 12:00Z, 8.2 hours before the alert went out and 278 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
- 776 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1076 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
780
WWUS84 KEWX 132011
SPSEWX
Special Weather Statement
National Weather Service Austin/San Antonio TX
311 PM CDT Tue Jul 13 2021
TXZ171>173-189>194-206-208-132115-
Comal TX-Blanco TX-Caldwell TX-Bastrop TX-Williamson TX-Llano TX-
Hays TX-Kendall TX-Burnet TX-Lee TX-Travis TX-
311 PM CDT Tue Jul 13 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WILLIAMSON...NORTH
CENTRAL CALDWELL...HAYS...TRAVIS...BLANCO...SOUTHEASTERN LLANO...
BASTROP...NORTHWESTERN LEE...NORTHEASTERN KENDALL...SOUTHWESTERN
BURNET AND NORTH CENTRAL COMAL COUNTIES UNTIL 415 PM CDT...
At 311 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Elgin to near Barton Creek to near Rocky
Creek. Movement was north at 20 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations impacted include...
Austin, Round Rock, Cedar Park, Georgetown, Pflugerville, Kyle,
Taylor, Buda, Elgin, Bastrop, Marble Falls, Dripping Springs,
Wimberley, Blanco, Round Mountain, Anderson Mill, Windemere,
Tanglewood Forest, Austin Bergstrom Int Airport and Leander.
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 3062 9722 3047 9716 3047 9713 2995 9719
2998 9792 2988 9860 3051 9860 3066 9781
TIME...MOT...LOC 2011Z 190DEG 18KT 3027 9736 3030 9790 3019 9852
$$
MOThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 1:32 PM CDT | Special Weather Statement | EWX | Comal, Guadalupe | 43 min |
| Jul 13, 3:16 PM CDT | Special Weather Statement | EWX | Lee | 44 min |
| Jul 13, 3:19 PM CDT | Special Weather Statement | EWX | Dimmit, Zavala | 56 min |
| Jul 13, 4:05 PM CDT | Special Weather Statement | EWX | Williamson | 55 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.