Alert archive / Texas / Tornado Watches in 2007
Tornado Watch 262
The Storm Prediction Center issued this tornado watch at May 9, 2007, 3:32 PM CDT for 22 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2007, 3:32 PM CDT (20:32 UTC)
- Expired
- May 9, 2007, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 22 counties
Atascosa County, TX, Bandera County, TX, Crockett County, TX, Dimmit County, TX, Duval County, TX, Edwards County, TX, Frio County, TX, Kerr County, TX, Kimble County, TX, Kinney County, TX, La Salle County, TX, Maverick County, TX, McMullen County, TX, Medina County, TX, Menard County, TX, Real County, TX, Schleicher County, TX, Sutton County, TX, Uvalde County, TX, Val Verde County, TX, Webb County, TX, Zavala County, TX
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 3:56 PM CDT | Tornado Warning | SJT | Schleicher, Sutton | 64 min |
| May 9, 4:13 PM CDT | Flash Flood Warning | SJT | Schleicher, Sutton | 3 hr |
| May 9, 4:35 PM CDT | Severe Thunderstorm Warning | SJT | Sutton | 40 min |
| May 9, 4:56 PM CDT | Severe Thunderstorm Warning | SJT | Menard, Schleicher, Sutton | 64 min |
| May 9, 5:20 PM CDT | Tornado Warning | SJT | Menard | 40 min |
| May 9, 5:37 PM CDT | Flash Flood Warning | SJT | Crockett | 4 hr |
| May 9, 5:53 PM CDT | Tornado Warning | SJT | Concho, McCulloch, Menard | 52 min |
| May 9, 5:59 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kinney | 61 min |
| May 9, 6:01 PM CDT | Flash Flood Warning | SJT | Kimble, Menard | 6 hr |
| May 9, 6:17 PM CDT | Tornado Warning | SJT | McCulloch, Mason, Menard | 43 min |
| May 9, 6:34 PM CDT | Flash Flood Warning | SJT | Menard | 4 hr |
| May 9, 6:38 PM CDT | Severe Thunderstorm Warning | EWX | Real | 58 min |
| May 9, 6:46 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 59 min |
| May 9, 7:11 PM CDT | Flash Flood Warning | EWX | Real, Uvalde | 3 hr |
| May 9, 7:15 PM CDT | Severe Thunderstorm Warning | EWX | Maverick, Zavala | 60 min |
| May 9, 8:14 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 61 min |
| May 9, 8:54 PM CDT | Flash Flood Warning | EWX | Dimmit | 3 hr |
| May 9, 9:08 PM CDT | Severe Thunderstorm Warning | CRP | Webb | 67 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 8.5 hours before the alert went out and 46 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
- 69 J/kg
- Mixed-layer CIN
- -193 J/kg
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 092033
SEL2
SPC WW 092033
TXZ000-100400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 262
NWS STORM PREDICTION CENTER NORMAN OK
335 PM CDT WED MAY 9 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF SOUTHWEST AND SOUTH TEXAS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 335 PM UNTIL
1100 PM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EITHER SIDE OF A LINE FROM 85 MILES WEST OF JUNCTION TEXAS
TO 50 MILES EAST NORTHEAST OF LAREDO TEXAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU2).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
DISCUSSION...THUNDERSTORMS INCREASING ACROSS SWRN TX AHEAD OF TROUGH
APPROACHING FROM THE W. WITH 18Z DRT SOUNDING INDICATING MLCAPES TO
1500 J/KG AND A FAVORABLE VEERING HODOGRAPH...SUPERCELLS ARE
EXPECTED. ALONG WITH LARGE HAIL TORNADOES WILL BE POSSIBLE WITH ANY
SUPERCELL. STORMS WILL LIKELY EVOLVE INTO A LINEAR MCS AND DEVELOP
SEWD ALONG AND E OF RIO GRANDE VALLEY THIS EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26025.
...HALESSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 7:30 PM CDT | Mesoscale Discussion | SPC | Cooke, Denton, Fannin, Grayson | 60 min |
| May 8, 7:54 PM CDT | Tornado Watch | SPC | Collin, Cooke, Denton, Fannin, Grayson, Hunt | 4 hr |
| May 9, 7:47 AM CDT | Mesoscale Discussion | SPC | Brewster, Crane, Crockett, Culberson, Ector, Edwards and 18 more | 118 min |
| May 9, 3:14 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Dimmit, Edwards, Frio and 15 more | 61 min |
| May 9, 5:53 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Burnet, Concho, Dimmit, Edwards and 21 more | 97 min |
Nearby
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.