Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 66, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 7, 2012, 5:57 PM CDT for 4 counties in Texas. It was in force for 63 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 7, 2012, 5:57 PM CDT (22:57 UTC)
- Expired
- May 7, 2012, 7:00 PM CDT
- In force
- 63 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Blanco County, TX, Burnet County, TX, Gillespie County, TX, Llano County, TX
The radar
The Austin/San Antonio radar (KEWX), 113 km from the middle of the area, began a volume at 22:59 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 7, 6:06 PM CDT | TSTM WND GST 60 | 3 Ne Kingsland, TX | WIND GUSTS TO 60 MPH. |
| May 7, 6:20 PM CDT | HAIL 1 | 4 W Fredericksburg, TX | QUARTER SIZE HAIL NEAR FREDERICKSBURG |
| May 7, 6:25 PM CDT | HAIL 1.25 | 2 E Fredericksburg, TX | QUARTER SIZE HAIL TO HALF DOLLAR SIZE HAIL COVERING THE GROUND. |
| May 7, 6:26 PM CDT | HAIL 1 | 1 S Fredericksburg, TX | ONE INCH HAIL IN FREDERICKSBURG. |
| May 7, 6:28 PM CDT | HAIL 1 | 4 W Fredericksburg, TX | QUARTER SIZE HAIL COVERING THE GROUND. |
| May 7, 6:50 PM CDT | TSTM WND DMG | 1 N Kingsland, TX | SEVERAL TREES BLOWN OVER NEAR KINGSLAND DUE TO STRONG WINDS. |
| May 7, 6:50 PM CDT | TSTM WND DMG | 4 Wsw Bertram, TX | TWO OAK TREES 75 APART BLOWN DOWN IN OPPOSITE DIRECTIONS |
| May 7, 6:50 PM CDT | TSTM WND GST 50 | 1 S Buchanan Dam, TX | WINDS GUSTS TO OVER 50 MPH NEAR LAKE BUCHANAN. |
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 7, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.0 hours before the alert went out and 258 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
- 3104 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1000 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
589
WUUS54 KEWX 072257
SVREWX
TXC031-053-171-299-080000-
/O.NEW.KEWX.SV.W.0066.120507T2257Z-120508T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
557 PM CDT MON MAY 7 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN BLANCO COUNTY...
BURNET COUNTY...
GILLESPIE COUNTY...
EASTERN LLANO COUNTY...
* UNTIL 700 PM CDT.
* AT 554 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM TOW TO 6 MILES NORTH OF BLOWOUT TO
ECKERT TO HILLTOP...OR ALONG A LINE EXTENDING FROM 6 MILES
NORTHWEST OF BUCHANAN DAM TO 11 MILES SOUTHWEST OF KINGSLAND TO 16
MILES NORTHEAST OF FREDERICKSBURG TO 12 MILES NORTHWEST OF
FREDERICKSBURG...AND MOVING SOUTHEAST AT 15 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE GAINESVILLE...BLUFFTON...
TIVYDALE...WILLOW CITY...INKS LAKE STATE PARK...GRANITE SHOALS...
HORSESHOE BAY...LAKE VICTOR...SANDY...ROUND MOUNTAIN...SUNNYLANE...
MEADOWLAKES...BURNET...ROCKY HILL...SHADY GROVE...ROCKY CREEK...
HYE...BLUMENTHAL...STONEWALL...GRAPETOWN...CAIN CITY...PEDERNALES
FALLS STATE PARK...JOHNSON CITY...CYPRESS MILL...LUCKENBACH...LBJ
STATE PARK AND MARBLE FALLS.
VERY HEAVY RAINS AND FREQUENT LIGHTNING CAN ALSO BE EXPECTED WITH
THESE STORMS.
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 3030 9825 3015 9878 3015 9924 3036 9916
3047 9887 3062 9876 3094 9861 3093 9843
3095 9846 3104 9805 3104 9800
TIME...MOT...LOC 2256Z 304DEG 14KT 3086 9849 3054 9856
3046 9871 3038 9902
$$1 follow-up statement
748
WWUS54 KEWX 072320
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
620 PM CDT MON MAY 7 2012
TXC031-053-171-299-080000-
/O.CON.KEWX.SV.W.0066.000000T0000Z-120508T0000Z/
GILLESPIE TX-LLANO TX-BURNET TX-BLANCO TX-
620 PM CDT MON MAY 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR NORTHERN BLANCO...WESTERN BURNET...EASTERN LLANO AND GILLESPIE
COUNTIES...
AT 617 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM BUCHANAN DAM TO 9 MILES NORTHWEST OF
ROUND MOUNTAIN TO 17 MILES WEST OF ROUND MOUNTAIN TO 6 MILES
NORTHWEST OF FREDERICKSBURG...MOVING SOUTHEAST AT 15 MPH. THE
LARGEST HAIL WILL BE IN THE CITY OF FREDERICKSBURG. VERY HEAVY RAINS
CAN ALSO BE EXPECTED.
SOME LOCATIONS IN THE WARNING AREA INCLUDE SUNRISE BEACH VILLAGE...
INKS LAKE STATE PARK...GRANITE SHOALS...LAKE VICTOR...HORSESHOE
BAY...SANDY...SUNNYLANE...COTTONWOOD SHORES...BURNET...MEADOWLAKES...
SHADY GROVE...ROCKY CREEK...HYE...BLUMENTHAL...STONEWALL...
GRAPETOWN...CAIN CITY...PEDERNALES FALLS STATE PARK...JOHNSON CITY...
CYPRESS MILL...LUCKENBACH...LBJ STATE PARK...MARBLE FALLS AND ROCKY
HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3030 9825 3015 9878 3015 9924 3036 9916
3047 9887 3062 9876 3094 9861 3093 9843
3095 9846 3104 9805 3104 9800
TIME...MOT...LOC 2319Z 304DEG 14KT 3081 9840 3049 9847
3041 9862 3033 9893
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:09 PM CDT | Areal Flood Advisory | EWX | Llano | 111 min |
| May 6, 7:33 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 42 min |
| May 7, 3:28 AM CDT | Flash Flood Watch | EWX | Bandera, Bexar, Blanco, Burnet, Comal, Edwards and 12 more | 37 hr |
| May 7, 4:47 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 58 min |
| May 7, 5:10 PM CDT | Tornado Warning | EWX | Llano | 35 min |
| May 7, 5:23 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 37 min |
| May 7, 5:32 PM CDT | Tornado Warning | EWX | Gillespie, Llano | 28 min |
| May 7, 5:43 PM CDT | Tornado Warning | EWX | Llano | 32 min |
| May 7, 6:08 PM CDT | Areal Flood Advisory | EWX | Llano | 112 min |
| May 7, 6:49 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Gillespie, Kendall | 56 min |
| May 7, 6:51 PM CDT | Areal Flood Advisory | EWX | Gillespie | 2 hr |
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.