Alert archive / Texas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 112, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Sep 27, 2012, 11:16 PM CDT for Val Verde County, Texas. It was in force for 44 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
- Sep 27, 2012, 11:16 PM CDT (04:16 UTC)
- Expired
- Sep 28, 2012, 12:00 AM CDT
- In force
- 44 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 76 km from the middle of the area, began a volume at 04:18 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 |
|---|---|---|---|
| Sep 27, 11:37 PM CDT | TSTM WND DMG | 8 Nw Del Rio, TX | STRONG WINDS RIPPED PORCH ROOF FROM DIABLO EAST MARINA STORE WITH WALL AND CEILING DAMAGE IN STORE. NOT FAR AWAY A 28 FOOR PONTOON BOAT WAS FLIPPED FROM A PARKING LOT OVER A FENCE INTO A FIELD. ALSO LOTS OF SMALL HAIL PILED UP NEARBY. |
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, 4.3 hours before the alert went out and 21 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
- 1100 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1744 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
116
WUUS54 KEWX 280416
SVREWX
TXC465-280500-
/O.NEW.KEWX.SV.W.0112.120928T0416Z-120928T0500Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1116 PM CDT THU SEP 27 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN VAL VERDE COUNTY...
* UNTIL MIDNIGHT CDT.
* AT 1108 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND HEAVY
RAIN. THIS STORM WAS LOCATED 7 MILES SOUTHWEST OF DEL RIO...AND
MOVING NORTH AT 25 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE AMISTAD VILLAGE.
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 2956 10119 2959 10085 2928 10087 2928 10089
2937 10103 2943 10107 2945 10108 2946 10115
TIME...MOT...LOC 0416Z 177DEG 22KT 2934 10096
$$1 follow-up statement
766 WWUS54 KEWX 280443 SVSEWX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1143 PM CDT THU SEP 27 2012 TXC465-280500- /O.CON.KEWX.SV.W.0112.000000T0000Z-120928T0500Z/ VAL VERDE TX- 1143 PM CDT THU SEP 27 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR SOUTHERN VAL VERDE COUNTY... AT 1137 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL ALONG WITH VERY HEAVY RAIN. THIS STORM WAS LOCATED NEAR AMISTAD VILLAGE...OR 8 MILES NORTHWEST OF DEL RIO...MOVING NORTH AT 25 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE ROUGH CANYON REC AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 2943 10090 2943 10103 2957 10107 2959 10088 TIME...MOT...LOC 0443Z 177DEG 22KT 2950 10097 $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 27, 7:16 PM CDT | Special Weather Statement | EWX | Atascosa | 44 min |
| Sep 27, 10:26 PM CDT | Special Weather Statement | EWX | Kinney | 49 min |
| Sep 27, 10:45 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Maverick | 38 min |
| Sep 28, 5:00 AM CDT | Flash Flood Watch | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 38 hr |
| Sep 28, 6:01 PM CDT | Areal Flood Advisory | EWX | Bexar, Comal | 119 min |
| Sep 28, 6:40 PM CDT | River Flood Warning | EWX | Val Verde | 7 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.