Alert archive / Texas / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 148

May 8, 201637 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2016, 1:42 PM CDT for 37 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 8, 2016, 1:42 PM CDT (18:42 UTC)
Expired
May 8, 2016, 9:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 37 counties

Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Crockett County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Glasscock County, TX, Haskell County, TX, Irion County, TX, Jack County, TX, Jones County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Mitchell County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Wise County, TX, Young County, TX

The radar

The San Angelo radar (KSJT), 36 km from the middle of the area, began a volume at 18:43 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
20%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 8, 2:54 PM CDTSevere Thunderstorm WarningMAFGlasscock, Reagan25 min
May 8, 2:58 PM CDTSevere Thunderstorm WarningSJTSterling47 min
May 8, 3:19 PM CDTSevere Thunderstorm WarningSJTCoke, Nolan, Sterling41 min
May 8, 3:29 PM CDTSevere Thunderstorm WarningSJTTaylor46 min
May 8, 3:39 PM CDTSevere Thunderstorm WarningSJTNolan51 min
May 8, 3:41 PM CDTSevere Thunderstorm WarningSJTCallahan, Jones, Shackelford, Taylor49 min
May 8, 3:53 PM CDTSevere Thunderstorm WarningSJTJones, Taylor52 min
May 8, 3:54 PM CDTSevere Thunderstorm WarningSJTCoke, Sterling51 min
May 8, 3:56 PM CDTSevere Thunderstorm WarningSJTNolan49 min
May 8, 4:14 PM CDTSevere Thunderstorm WarningSJTHaskell, Shackelford, Throckmorton46 min
May 8, 4:22 PM CDTSevere Thunderstorm WarningSJTHaskell, Jones36 min
May 8, 4:29 PM CDTSevere Thunderstorm WarningSJTNolan, Runnels, Taylor46 min
May 8, 4:35 PM CDTSevere Thunderstorm WarningSJTCoke, Irion, Sterling, Tom Green40 min
May 8, 4:37 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford53 min
May 8, 4:56 PM CDTSevere Thunderstorm WarningSJTHaskell, Shackelford, Throckmorton28 min
May 8, 5:04 PM CDTSevere Thunderstorm WarningSJTCallahan, Jones, Shackelford, Taylor41 min
May 8, 5:12 PM CDTSevere Thunderstorm WarningSJTCoke, Irion, Sterling, Tom Green36 min
May 8, 5:35 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford55 min
May 8, 5:50 PM CDTSevere Thunderstorm WarningFWDEastland, Stephens55 min
May 8, 6:40 PM CDTSevere Thunderstorm WarningFWDJack, Palo Pinto, Stephens, Young65 min
May 8, 7:12 PM CDTSevere Thunderstorm WarningFWDJack, Parker, Wise63 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 12:00Z, 6.7 hours before the alert went out and 141 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 12:00Z on 2016-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 326 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2016-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 279 square meters per square second.1939587897117Sfc1 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
326 J/kg
Mixed-layer CIN
-353 J/kg
Mixed-layer LCL
1537 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
279 m²/s²
0-3 km storm-relative helicity
276 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 8, 12:09 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 33 more96 min
May 8, 1:18 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Foard, Hardeman, Jack and 7 more117 min
May 8, 3:04 PM CDTTornado WatchSPCArcher, Baylor, Clay, Foard, Hardeman, Knox and 2 more6 hr
May 8, 5:39 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 36 more2 hr

Nearby

Severe Thunderstorm Watches in Texas, 2016Every severe thunderstorm watch in 2016

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.