Alert archive / Texas / Tornado Watches in 2015

Tornado Watch 132

May 5, 201520 counties in Texas

The Storm Prediction Center issued this tornado watch at May 5, 2015, 8:07 PM CDT for 20 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 5, 2015, 8:07 PM CDT (01:07 UTC)
Expired
May 6, 2015, 12:05 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
65 kt

Counties Coke County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Fisher County, TX, Foard County, TX, Garza County, TX, Haskell County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Runnels County, TX, Scurry County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 125 km from the middle of the area, began a volume at 01:07 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
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
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 5, 8:12 PM CDTSevere Thunderstorm WarningLUBCrosby, Dickens, Motley48 min
May 5, 8:30 PM CDTSevere Thunderstorm WarningSJTCoke, Nolan, Sterling45 min
May 5, 8:57 PM CDTTornado WarningSJTCoke33 min
May 5, 9:13 PM CDTSevere Thunderstorm WarningSJTCoke, Nolan47 min
May 5, 9:29 PM CDTSevere Thunderstorm WarningSJTCoke46 min
May 5, 9:30 PM CDTTornado WarningSJTCoke45 min
May 5, 10:03 PM CDTSevere Thunderstorm WarningSJTCoke, Nolan42 min
May 5, 11:05 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman40 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

Midland Regional, TX (KMAF), launched 00:00Z, 1.1 hours before the alert went out and 178 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-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2015-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2015-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
20 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
2898 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 5, 7:41 PM CDTMesoscale DiscussionSPCBorden, Briscoe, Childress, Cottle, Crosby, Dickens and 15 more2 hr
May 5, 9:56 PM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Cottle, Crosby, Dickens and 23 more94 min
May 6, 1:03 PM CDTMesoscale DiscussionSPCArcher, Baylor, Childress, Clay, Cottle, Dickens and 17 more117 min
May 6, 1:23 PM CDTTornado WatchSPCArcher, Baylor, Callahan, Clay, Eastland, Foard and 16 more8 hr
May 6, 1:46 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Concho, Crockett and 22 more119 min
May 6, 3:00 PM CDTTornado WatchSPCBrown, Coke, Coleman, Concho, Crockett, Fisher and 12 more7 hr
May 6, 3:27 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Foard, Hardeman, Haskell and 8 more2 hr
May 6, 5:25 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Foard, Hardeman, Haskell and 13 more2 hr
May 6, 6:34 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Foard, Hardeman and 13 more86 min

Nearby

Tornado Watches in Texas, 2015Every tornado watch in 2015

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.