Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 62, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 6, 2012, 6:54 PM CDT for Burnet County, Llano County, Texas. It was in force for 51 min. 5 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, 6:54 PM CDT (23:54 UTC)
- Expired
- May 6, 2012, 7:45 PM CDT
- In force
- 51 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), 119 km from the middle of the area, began a volume at 23:57 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, 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. |
| May 6, 7:38 PM CDT | HAIL 1.75 | 2 W Llano, TX | QUARTER TO GOLFBALL SIZE SIZE HAIL. |
| May 6, 7:46 PM CDT | HAIL 1.75 | 3 Se Llano, TX | GOLFBALL SIZE HAIL IN DRIFTS. |
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, 11.9 hours before the alert went out and 255 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.
076 WUUS54 KEWX 062354 SVREWX TXC053-299-070045- /O.NEW.KEWX.SV.W.0062.120506T2354Z-120507T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 654 PM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL BURNET COUNTY... NORTHERN LLANO COUNTY... * UNTIL 745 PM CDT. * AT 654 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LLANO...AND MOVING EAST AT 10 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE BABY HEAD...LONE GROVE... GAINESVILLE...STOLZ...BLUFFTON...TOW AND BUCHANAN DAM. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM WITH A HISTORY OF PRODUCING GOLFBALL SIZE HAIL AND VERY HEAVY RAINFALL UP TO 2 INCHES. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 3093 9832 3063 9856 3078 9893 3092 9896 TIME...MOT...LOC 2354Z 272DEG 7KT 3081 9868 $$
2 follow-up statements
516 WWUS54 KEWX 070019 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 719 PM CDT SUN MAY 6 2012 TXC053-299-070045- /O.CON.KEWX.SV.W.0062.000000T0000Z-120507T0045Z/ LLANO TX-BURNET TX- 719 PM CDT SUN MAY 6 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR WEST CENTRAL BURNET AND NORTHERN LLANO COUNTIES... AT 717 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LLANO... MOVING SOUTH AT 15 MPH. LAT...LON 3093 9832 3063 9856 3078 9893 3092 9896 TIME...MOT...LOC 0018Z 349DEG 12KT 3075 9864 $$
584 WWUS54 KEWX 070025 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 725 PM CDT SUN MAY 6 2012 TXC053-299-070045- /O.CON.KEWX.SV.W.0062.000000T0000Z-120507T0045Z/ LLANO TX-BURNET TX- 725 PM CDT SUN MAY 6 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR WEST CENTRAL BURNET AND NORTHERN LLANO COUNTIES... AT 722 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LLANO... MOVING SOUTH AT 15 MPH. THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... HAIL UP TO ONE INCH IN DIAMETER HAS BEEN REPORTED 3 MILES EAST OF LLANO WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY. && LAT...LON 3093 9832 3063 9856 3078 9893 3092 9896 TIME...MOT...LOC 0024Z 349DEG 12KT 3073 9864 $$
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, 6:12 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 63 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.