Alert archive / Texas / Tornado Warnings in 2012
Tornado Warning 23, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at May 10, 2012, 7:21 PM CDT for Dimmit County, Frio County, Zavala County, Texas. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 10, 2012, 7:21 PM CDT (00:21 UTC)
- Expired
- May 10, 2012, 7:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
Counties Dimmit County, TX, Frio County, TX, Zavala County, TX
The radar
The Laughlin AFB radar (KDFX), 110 km from the middle of the area, began a volume at 00:21 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.
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 10, 11:40 AM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 0.4 hours before the alert went out and 162 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
- 67 J/kg
- Mixed-layer CIN
- -176 J/kg
- Mixed-layer LCL
- 934 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
091
WFUS54 KEWX 110021
TOREWX
TXC127-163-507-110045-
/O.NEW.KEWX.TO.W.0023.120511T0021Z-120511T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
721 PM CDT THU MAY 10 2012
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN DIMMIT COUNTY...
SOUTHWESTERN FRIO COUNTY...
SOUTHEASTERN ZAVALA COUNTY...
* UNTIL 745 PM CDT.
* AT 717 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 15 MILES WEST OF
DIVOT...OR ABOUT 9 MILES NORTHEAST OF BIG WELLS...MOVING EAST AT 40
MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE DERBY AND DILLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT THURSDAY EVENING
FOR SOUTH CENTRAL TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 800 PM CDT THURSDAY EVENING FOR SOUTH CENTRAL TEXAS.
&&
LAT...LON 2860 9958 2884 9953 2888 9904 2863 9909
2864 9938 2856 9939
TIME...MOT...LOC 0021Z 275DEG 33KT 2868 9945
$$1 follow-up statement
835
WWUS54 KEWX 110035
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
735 PM CDT THU MAY 10 2012
TXC127-163-507-110045-
/O.CON.KEWX.TO.W.0023.000000T0000Z-120511T0045Z/
DIMMIT TX-FRIO TX-ZAVALA TX-
735 PM CDT THU MAY 10 2012
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN ZAVALA...SOUTHWESTERN FRIO AND NORTHEASTERN DIMMIT
COUNTIES...
AT 731 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A TORNADO.
THIS TORNADO WAS LOCATED 8 MILES SOUTHWEST OF DIVOT...OR 11 MILES
WEST OF DILLEY...MOVING EAST AT 40 MPH.
SOME LOCATIONS IN THE WARNING AREA INCLUDE DERBY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN A MOBILE HOME OR VEHICLE...GET OUT AND GO TO A STURDY
SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH
OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT THURSDAY EVENING
FOR SOUTH CENTRAL TEXAS. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 800 PM CDT THURSDAY EVENING FOR SOUTH CENTRAL TEXAS.
&&
LAT...LON 2860 9958 2884 9953 2888 9904 2863 9909
2864 9938 2856 9939
TIME...MOT...LOC 0035Z 275DEG 33KT 2867 9930
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:59 PM CDT | River Flood Warning | EWX | Kerr | 18 hr |
| May 10, 8:02 PM CDT | Flash Flood Warning | EWX | Hays, Travis, Williamson | 118 min |
| May 10, 8:26 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 49 min |
| May 10, 8:32 PM CDT | River Flood Warning | EWX | Val Verde | 30 hr |
| May 10, 8:34 PM CDT | Areal Flood Advisory | EWX | Bexar | 116 min |
| May 10, 9:10 PM CDT | Flash Flood Warning | EWX | Bexar, Comal, Guadalupe, Hays | 3 hr |
| May 10, 9:59 PM CDT | Areal Flood Advisory | EWX | Bastrop, Caldwell, Comal, Guadalupe, Hays, Lee and 2 more | 2 hr |
| May 10, 10:42 PM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell, Guadalupe, Hays, Lee, Travis and 1 more | 4 hr |
| May 11, 12:06 AM CDT | Flash Flood Warning | EWX | Bexar, Comal | 3 hr |
| May 11, 2:37 AM CDT | Flash Flood Warning | EWX | Hays | 113 min |
Nearby
Tornado Warnings in Texas, 2012Every tornado warning in 2012Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.