Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 113, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Oct 14, 2012, 12:32 AM CDT for Llano County, Texas. It was in force for 43 min. 1 report 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
- Oct 14, 2012, 12:32 AM CDT (05:32 UTC)
- Expired
- Oct 14, 2012, 1:15 AM CDT
- In force
- 43 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Llano County, TX
The radar
The Ft Hood radar (KGRK), 138 km from the middle of the area, began a volume at 05:32 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 |
|---|---|---|---|
| Oct 14, 12:45 AM CDT | HAIL 1 | Valley Spring, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 5.5 hours before the alert went out and 252 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
- 2651 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1277 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
463
WUUS54 KEWX 140532
SVREWX
TXC299-140615-
/O.NEW.KEWX.SV.W.0113.121014T0532Z-121014T0615Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1232 AM CDT SUN OCT 14 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN LLANO COUNTY...
* UNTIL 115 AM CDT.
* AT 1230 AM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR
FIELD CREEK...OR 20 MILES NORTHEAST OF MASON...AND MOVING EAST AT
25 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE VALLEY SPRING...BABY HEAD AND
LLANO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. 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 3071 9867 3075 9893 3079 9898 3091 9897
3093 9896 3093 9860
TIME...MOT...LOC 0532Z 289DEG 24KT 3096 9898
$$1 follow-up statement
433
WWUS54 KEWX 140557
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1257 AM CDT SUN OCT 14 2012
TXC299-140615-
/O.CON.KEWX.SV.W.0113.000000T0000Z-121014T0615Z/
LLANO TX-
1257 AM CDT SUN OCT 14 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR NORTHWESTERN LLANO COUNTY...
AT 1253 AM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DESTRUCTIVE
WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR VALLEY
SPRING...OR 14 MILES NORTHWEST OF LLANO...MOVING EAST AT 30 MPH.
SOME LOCATIONS IN THE WARNING AREA INCLUDE BABY HEAD. THIS STORM IS
MOVING ALONG THE LLANO/SAN SABA COUNTY LINE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3074 9867 3080 9886 3084 9897 3091 9897
3093 9896 3093 9860
TIME...MOT...LOC 0556Z 289DEG 24KT 3091 9880
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 1:11 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 49 min |
| Oct 14, 1:56 AM CDT | Tornado Warning | EWX | Burnet, Llano | 19 min |
| Oct 14, 2:10 AM CDT | Areal Flood Advisory | EWX | Burnet, Llano | 3 hr |
| Oct 14, 2:14 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 46 min |
| Oct 14, 2:59 AM CDT | Special Weather Statement | EWX | Williamson | 46 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.