Alert archive / Texas / Tornado Warnings in 2011
Tornado Warning 11, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at May 21, 2011, 8:11 PM CDT for Burnet County, Llano County, Texas. It was in force for 34 min. 8 reports 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
- May 21, 2011, 8:11 PM CDT (01:11 UTC)
- Expired
- May 21, 2011, 8:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Burnet County, TX, Llano County, TX
The radar
The Ft Hood radar (KGRK), 83 km from the middle of the area, began a volume at 01:11 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
| Time | Report | Where | Remark |
|---|---|---|---|
| May 21, 8:30 PM CDT | HAIL 1.5 | 5 Nw Burnet, TX | |
| May 21, 8:36 PM CDT | FUNNEL CLOUD | Burnet, TX | WALL CLOUD WITH ROTATION IN THE CITY OF BURNET. |
| May 21, 8:36 PM CDT | HAIL 2.75 | Burnet, TX | BASEBALL HAIL IN THE CITY OF BURNET. |
| May 21, 8:36 PM CDT | HAIL 4 | Burnet, TX | GRAPEFRUIT SIZE HAIL FALLING IN NORTH CENTRAL BURNET. |
| May 21, 8:40 PM CDT | HAIL 4.5 | Burnet, TX | 5 INCH HAIL MEASURED. |
| May 21, 8:42 PM CDT | HAIL 2.75 | 2 N Burnet, TX | GOLFBALL TO BASEBALL SIZE HAIL NEAR BURNET. |
| May 21, 8:48 PM CDT | HAIL 2.75 | Burnet, TX | |
| May 21, 8:53 PM CDT | HAIL 2 | Burnet, TX | MEASURED HAIL WITH 2.38 INCHES ACROSS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 21, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 1.2 hours before the alert went out and 239 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
- 3908 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 16.6
The text
As transmitted, in the capitals the NWS used until 2016.
204 WFUS54 KEWX 220111 TOREWX TXC053-299-220145- /O.NEW.KEWX.TO.W.0011.110522T0111Z-110522T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 811 PM CDT SAT MAY 21 2011 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * TORNADO WARNING FOR... CENTRAL BURNET COUNTY... EXTREME NORTHEASTERN LLANO COUNTY... * UNTIL 845 PM CDT. * AT 806 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES NORTHWEST OF BURNET...OR ABOUT NEAR BUCHANAN DAM...MOVING EAST AT 20 MPH. * THE TORNADO WILL MOVE NORTH OF HIGHWAY 29 TOWARD BURNET. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3087 9810 3074 9821 3082 9842 3090 9838 TIME...MOT...LOC 0110Z 286DEG 18KT 3082 9834 $$
2 follow-up statements
374 WWUS54 KEWX 220124 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 824 PM CDT SAT MAY 21 2011 TXC299-220133- /O.CAN.KEWX.TO.W.0011.000000T0000Z-110522T0145Z/ LLANO TX- 824 PM CDT SAT MAY 21 2011 ...THE TORNADO WARNING FOR EXTREME NORTHEASTERN LLANO COUNTY IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING FOR SOUTH CENTRAL TEXAS. LAT...LON 3084 9830 3082 9815 3074 9821 3080 9836 TIME...MOT...LOC 0123Z 294DEG 18KT 3078 9827 $$ TXC053-220145- /O.CON.KEWX.TO.W.0011.000000T0000Z-110522T0145Z/ BURNET TX- 824 PM CDT SAT MAY 21 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR CENTRAL BURNET COUNTY... AT 820 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A TORNADO. THIS TORNADO WAS LOCATED NEAR BURNET...MOVING SOUTHEAST AT 20 MPH. RESIDENTS IN BURNET SHOULD TAKE COVER NOW! PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3084 9830 3082 9815 3074 9821 3080 9836 TIME...MOT...LOC 0123Z 294DEG 18KT 3078 9827 $$
201 WWUS54 KEWX 220130 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 830 PM CDT SAT MAY 21 2011 TXC053-220145- /O.CON.KEWX.TO.W.0011.000000T0000Z-110522T0145Z/ BURNET TX- 830 PM CDT SAT MAY 21 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR CENTRAL BURNET COUNTY... AT 824 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A TORNADO. THIS TORNADO WAS LOCATED NEAR BURNET...MOVING SOUTHEAST AT 20 MPH. RESIDENTS IN BURNET SHOULD TAKE SHELTER IMMEDIATELY AND PREPARE FOR LARGE HAIL AND A POSSIBLE TORNADO! PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY...BATHROOM...OR CLOSET. COVER YOURSELF WITH BLANKETS...PILLOWS OR EVEN A MATTRESS FOR BETTER PROTECTION. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING FOR SOUTH CENTRAL TEXAS. && LAT...LON 3084 9830 3082 9815 3074 9821 3080 9836 TIME...MOT...LOC 0129Z 294DEG 18KT 3077 9824 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:10 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 50 min |
| May 21, 7:27 PM CDT | Tornado Warning | EWX | Burnet, Williamson | 33 min |
| May 21, 7:44 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 46 min |
| May 21, 7:50 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 40 min |
| May 21, 7:59 PM CDT | Tornado Warning | EWX | Burnet, Williamson | 31 min |
| May 21, 8:08 PM CDT | Areal Flood Advisory | EWX | Burnet, Williamson | 112 min |
| May 21, 8:27 PM CDT | Severe Thunderstorm Warning | EWX | Williamson | 48 min |
| May 21, 8:27 PM CDT | Tornado Warning | EWX | Williamson | 33 min |
| May 21, 8:32 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 43 min |
| May 21, 8:44 PM CDT | Tornado Warning | EWX | Burnet | 31 min |
| May 21, 8:59 PM CDT | Tornado Warning | EWX | Williamson | 31 min |
| May 21, 9:14 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 46 min |
Nearby
Tornado Warnings in Texas, 2011Every tornado warning in 2011Tornadoes in 2011
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.