Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 61, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 6, 2012, 6:12 PM CDT for Burnet County, Llano County, Texas. It was in force for 63 min. 4 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 6, 2012, 6:12 PM CDT (23:12 UTC)
- Expired
- May 6, 2012, 7:15 PM CDT
- In force
- 63 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), 106 km from the middle of the area, began a volume at 23:12 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 6, 6:35 PM CDT | HAIL 1.75 | 3 Wnw Llano, TX | PEA TO GOLFBALL SIZE HAIL. |
| May 6, 7:00 PM CDT | HAIL 2 | 3 Nw Llano, TX | EGG SIZE HAIL. |
| May 6, 7:15 PM CDT | HAIL 1 | 3 Ene Llano, TX | ONE INCH SIZE HAIL. |
| May 6, 7:23 PM CDT | HAIL 1 | 1 N Llano, TX | ONE INCH SIZE HAIL AND VERY STRONG WINDS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 243 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
- 1528 J/kg
- Mixed-layer CIN
- -387 J/kg
- Mixed-layer LCL
- 1140 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
543
WUUS54 KEWX 062312
SVREWX
TXC053-299-070015-
/O.NEW.KEWX.SV.W.0061.120506T2312Z-120507T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
612 PM CDT SUN MAY 6 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN BURNET COUNTY...
LLANO COUNTY...
* UNTIL 715 PM CDT.
* AT 612 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM TOW TO LLANO...OR ALONG A LINE EXTENDING FROM 9
MILES NORTH OF BUCHANAN DAM TO LLANO...AND MOVING SOUTH AT 10 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE LONE GROVE...STOLZ AND
BLUFFTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
LAT...LON 3103 9814 3056 9865 3071 9886 3093 9868
3093 9843 3095 9846 3102 9846
TIME...MOT...LOC 2311Z 351DEG 7KT 3092 9848 3070 9869
$$2 follow-up statements
063
WWUS54 KEWX 062334
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
634 PM CDT SUN MAY 6 2012
TXC053-299-070015-
/O.CON.KEWX.SV.W.0061.000000T0000Z-120507T0015Z/
LLANO TX-BURNET TX-
634 PM CDT SUN MAY 6 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR CENTRAL BURNET AND EASTERN LLANO COUNTIES...
AT 633 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM 6 MILES NORTHEAST OF TOW TO 6 MILES SOUTH OF
LLANO...OR ALONG A LINE EXTENDING FROM 10 MILES NORTH OF BUCHANAN DAM
TO 6 MILES SOUTH OF LLANO...MOVING SOUTH AT 10 MPH.
SOME LOCATIONS IN THE WARNING AREA INCLUDE BLUFFTON.
LAT...LON 3098 9843 3099 9820 3056 9865 3069 9881
3090 9862 3093 9843 3095 9846
TIME...MOT...LOC 2334Z 351DEG 7KT 3093 9838 3066 9868
$$434
WWUS54 KEWX 062350
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
650 PM CDT SUN MAY 6 2012
TXC053-299-070015-
/O.CON.KEWX.SV.W.0061.000000T0000Z-120507T0015Z/
LLANO TX-BURNET TX-
650 PM CDT SUN MAY 6 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR CENTRAL BURNET AND EASTERN LLANO COUNTIES...
AT 647 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM TOW TO 6 MILES SOUTHWEST OF LLANO...OR ALONG A
LINE EXTENDING FROM 7 MILES NORTH OF BUCHANAN DAM TO 6 MILES
SOUTHWEST OF LLANO...MOVING SOUTH AT 10 MPH.
SOME LOCATIONS IN THE WARNING AREA INCLUDE STOLZ AND BLUFFTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HAIL UP TO 1.75 INCHES IN DIAMETER HAS BEEN REPORTED 3 MILES
WNW OF LLANO WITH THIS STORM. IF YOU ARE IN THE PATH OF THE
STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3098 9843 3099 9820 3056 9865 3069 9881
3090 9862 3093 9843 3095 9846
TIME...MOT...LOC 2349Z 351DEG 7KT 3090 9846 3069 9874
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 8:33 PM CDT | River Flood Warning | EWX | Val Verde | 19 days |
| May 6, 12:55 AM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 2 hr |
| May 6, 3:26 AM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal | 34 min |
| May 6, 4:11 AM CDT | Areal Flood Advisory | EWX | Bexar | 3 hr |
| May 6, 6:54 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 51 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2012Every severe thunderstorm warning in 2012
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.