Alert archive / Texas / Tornado Warnings in 2009
Tornado Warning 20, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this tornado warning at Oct 8, 2009, 6:52 PM CDT for Val Verde County, Texas. It was in force for 53 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
- Oct 8, 2009, 6:52 PM CDT (23:52 UTC)
- Expired
- Oct 8, 2009, 7:45 PM CDT
- In force
- 53 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 138 km from the middle of the area, began a volume at 23:55 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 |
|---|---|---|---|
| Oct 8, 4:56 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.9 hours before the alert went out and 98 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
- 1808 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 4.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS54 KEWX 082352
TOREWX
TXC465-090045-
/O.NEW.KEWX.TO.W.0020.091008T2352Z-091009T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
652 PM CDT THU OCT 8 2009
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* TORNADO WARNING FOR...
VAL VERDE COUNTY...
* UNTIL 745 PM CDT.
* AT 652 PM CDT...NWS METEOROLOGISTS HAVE DETECTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 24 MILES SOUTHWEST OF
JUNO...OR ABOUT 12 MILES NORTHEAST OF LANGTRY...MOVING NORTHEAST AT
20 MPH.
* THE TORNADO WILL OTHERWISE IMPACT MAINLY RURAL AREAS OF THE
INDICATED COUNTY.
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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FRIDAY MORNING FOR SOUTH CENTRAL TEXAS.
&&
LAT...LON 3030 10151 3030 10086 3029 10084 2983 10132
2996 10160
TIME...MOT...LOC 2352Z 224DEG 18KT 2996 10146
$$1 follow-up statement
000
WWUS54 KEWX 090014
SVSEWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
714 PM CDT THU OCT 8 2009
TXC465-090045-
/O.CON.KEWX.TO.W.0020.000000T0000Z-091009T0045Z/
VAL VERDE TX-
714 PM CDT THU OCT 8 2009
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR VAL VERDE
COUNTY...
AT 712 PM CDT...NWS METEOROLOGISTS CONTINUED TO DETECT A TORNADO.
THIS TORNADO WAS LOCATED 15 MILES SOUTHWEST OF JUNO...MOVING
NORTHEAST AT 25 MPH.
GOLF BALL SIZE HAIL AND RAINFALL AMOUNTS UP TO 3 INCHES CAN ALSO BE
EXPECTED WITH THIS STORM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FRIDAY MORNING FOR SOUTH CENTRAL TEXAS.
&&
LAT...LON 3030 10151 3030 10086 3029 10084 2983 10132
2996 10160
TIME...MOT...LOC 0012Z 227DEG 20KT 3004 10134
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 3:34 AM CDT | Flash Flood Watch | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 24 more | 32 hr |
| Oct 8, 5:55 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 65 min |
Nearby
Tornado Warnings in Texas, 2009Every tornado warning in 2009Tornadoes in 2009
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.