Alert archive / Texas / Tornado Watches in 2008

Tornado Watch 317

May 14, 200818 counties in Texas

The Storm Prediction Center issued this tornado watch at May 14, 2008, 1:40 AM CDT for 18 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 14, 2008, 1:40 AM CDT (06:40 UTC)
Expired: May 14, 2008, 7:21 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

Counties Atascosa County, TX, Bandera County, TX, Bexar County, TX, Comal County, TX, Dimmit County, TX, Edwards County, TX, Frio County, TX, Guadalupe County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Maverick County, TX, Medina County, TX, Real County, TX, Uvalde County, TX, Val Verde County, TX, Wilson County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 62 km from the middle of the area, began a volume at 06:43 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 30%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 20%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 14, 1:58 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kinney, Real, Uvalde	62 min
May 14, 2:28 AM CDT	Tornado Warning	EWX	Kinney, Maverick, Uvalde, Zavala	47 min
May 14, 2:59 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kinney, Medina, Real, Uvalde	61 min
May 14, 3:08 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	56 min
May 14, 3:35 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kendall, Kerr	25 min
May 14, 3:52 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Blanco, Comal, Kendall, Kerr and 1 more	68 min
May 14, 4:51 AM CDT	Severe Thunderstorm Warning	EWX	Bexar, Caldwell, Comal, Gonzales, Guadalupe, Hays	69 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 00:00Z, 6.7 hours before the alert went out and 110 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1518 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 3024 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 13, 7:11 PM CDT	Mesoscale Discussion	SPC	Panola	2 hr
May 13, 8:05 PM CDT	Mesoscale Discussion	SPC	Brown, Clay, Coleman, Comanche, Cooke, Denton and 10 more	85 min
May 13, 8:29 PM CDT	Mesoscale Discussion	SPC	Bandera, Blanco, Burnet, Comal, Concho, Edwards and 15 more	91 min
May 13, 8:53 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bell, Bosque, Brown, Callahan, Coke and 56 more	7 hr
May 13, 9:54 PM CDT	Severe Thunderstorm Watch	SPC	Bastrop, Brazos, Burleson, Caldwell, Comal, Fayette and 5 more	6 hr
May 13, 11:41 PM CDT	Mesoscale Discussion	SPC	Bastrop, Bell, Blanco, Bosque, Brazos, Burleson and 18 more	94 min
May 14, 12:50 AM CDT	Mesoscale Discussion	SPC	Archer, Armstrong, Baylor, Briscoe, Childress, Clay and 26 more	85 min
May 14, 1:19 AM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 19 more	56 min
May 14, 2:28 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Bell, Bosque, Brown, Burnet and 58 more	92 min
May 14, 2:59 AM CDT	Mesoscale Discussion	SPC	Austin, Bastrop, Bell, Blanco, Brazos, Burleson and 26 more	91 min
May 14, 3:39 AM CDT	Severe Thunderstorm Watch	SPC	Austin, Bastrop, Bell, Blanco, Brazos, Burleson and 25 more	6 hr
May 14, 5:13 AM CDT	Mesoscale Discussion	SPC	Austin, Bastrop, Bell, Blanco, Brazos, Burleson and 29 more	92 min
May 14, 5:38 AM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Edwards, Frio, Kerr and 7 more	97 min
May 14, 6:42 AM CDT	Mesoscale Discussion	SPC	Austin, Bastrop, Bell, Blanco, Brazos, Burleson and 30 more	63 min
May 14, 7:31 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Bastrop, Bell, Brazos and 34 more	119 min
May 14, 7:50 AM CDT	Tornado Watch	SPC	Anderson, Angelina, Austin, Brazos, Burleson, Cherokee and 28 more	7 hr
May 14, 10:23 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Austin, Bastrop, Bell, Brazos and 34 more	97 min
May 14, 12:12 PM CDT	Mesoscale Discussion	SPC	Andrews, Dawson, Gaines, Terry, Yoakum	93 min
May 14, 12:47 PM CDT	Tornado Watch	SPC	Andrews, Borden, Cochran, Coke, Crane, Dawson and 22 more	6 hr
May 14, 3:33 PM CDT	Mesoscale Discussion	SPC	Crockett, Edwards, Kerr, Kimble, Kinney, Menard and 5 more	27 min
May 14, 3:50 PM CDT	Tornado Watch	SPC	Bandera, Blanco, Brown, Burnet, Callahan, Coleman and 37 more	7 hr
May 14, 3:58 PM CDT	Mesoscale Discussion	SPC	Anderson, Bastrop, Bell, Brazos, Burleson, Falls and 9 more	92 min
May 14, 5:12 PM CDT	Mesoscale Discussion	SPC	Orange	63 min
May 14, 6:08 PM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Cochran, Coke, Crane, Crosby and 27 more	67 min
May 14, 6:40 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Clay, Foard, Hardeman, Knox and 2 more	95 min

Nearby

Tornado Watches in Texas, 2008 Every tornado watch in 2008

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.