Alert archive / Texas / Severe Thunderstorm Watches in 2019

Severe Thunderstorm Watch 151

May 8, 201934 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 8, 2019, 6:54 AM CDT for 34 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 8, 2019, 6:54 AM CDT (11:54 UTC)
Expired
May 8, 2019, 1:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 34 counties

Bandera County, TX, Bell County, TX, Blanco County, TX, Bosque County, TX, Brown County, TX, Burnet County, TX, Coleman County, TX, Comal County, TX, Comanche County, TX, Concho County, TX, Coryell County, TX, Edwards County, TX, Falls County, TX, Gillespie County, TX, Hamilton County, TX, Hays County, TX, Hill County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Menard County, TX, Milam County, TX, Mills County, TX, Real County, TX, San Saba County, TX, Schleicher County, TX, Sutton County, TX, Travis County, TX, Williamson County, TX

The radar

The Ft Hood radar (KGRK), 148 km from the middle of the area, began a volume at 11:57 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
5%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
20%
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

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

IssuedProductOfficeCountiesLasted
May 8, 7:18 AM CDTSevere Thunderstorm WarningSJTColeman, Concho, McCulloch20 min
May 8, 8:23 AM CDTSevere Thunderstorm WarningSJTMcCulloch, San Saba52 min
May 8, 8:29 AM CDTFlash Flood WarningSJTConcho, McCulloch, Menard3 hr
May 8, 9:05 AM CDTSevere Thunderstorm WarningFWDMills55 min
May 8, 9:07 AM CDTSevere Thunderstorm WarningSJTMcCulloch, San Saba38 min
May 8, 9:32 AM CDTSevere Thunderstorm WarningEWXBurnet, Llano18 min
May 8, 10:01 AM CDTSevere Thunderstorm WarningEWXBlanco, Gillespie, Kendall, Kerr59 min
May 8, 10:15 AM CDTSevere Thunderstorm WarningFWDCoryell, Hamilton, Lampasas, Mills60 min
May 8, 10:59 AM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie, Hays, Llano, Travis61 min
May 8, 11:14 AM CDTSevere Thunderstorm WarningFWDBell, Coryell61 min
May 8, 11:58 AM CDTSevere Thunderstorm WarningEWXTravis, Williamson32 min
May 8, 12:16 PM CDTFlash Flood WarningEWXComal, Hays6 hr
May 8, 12:21 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson2 min
May 8, 12:27 PM CDTSevere Thunderstorm WarningEWXTravis, Williamson48 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

Fort Worth, TX (KFWD), launched 00:00Z, 11.9 hours before the alert went out and 251 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, Fort Worth, TX at 00:00Z on 2019-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1709 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, Fort Worth, TX at 00:00Z on 2019-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.193958Sfc1 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
1709 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1260 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 8:25 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 21 more95 min
May 7, 9:13 PM CDTTornado WatchSPCArcher, Baylor, Clay, Foard, Hardeman, Knox and 2 more8 hr
May 7, 9:38 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Collingsworth, Deaf Smith and 16 more67 min
May 7, 10:02 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Borden, Briscoe, Castro, Cochran and 43 more58 min
May 7, 10:58 PM CDTSevere Thunderstorm WatchSPCBrown, Callahan, Coke, Coleman, Concho, Crockett and 18 more8 hr
May 8, 12:56 AM CDTMesoscale DiscussionSPCBosque, Collin, Comanche, Cooke, Coryell, Dallas and 20 more64 min
May 8, 6:29 AM CDTMesoscale DiscussionSPCAnderson, Bandera, Bastrop, Bell, Blanco, Bosque and 38 more61 min
May 8, 10:11 AM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 28 more2 hr
May 8, 12:21 PM CDTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bastrop, Brazos, Burleson and 30 more84 min
May 8, 12:58 PM CDTSevere Thunderstorm WatchSPCAnderson, Bastrop, Brazos, Burleson, Caldwell, Fayette and 13 more5 hr
May 8, 2:07 PM CDTMesoscale DiscussionSPCAngelina, Brazoria, Chambers, Fort Bend, Hardin, Harris and 16 more53 min
May 8, 2:16 PM CDTTornado WatchSPCAngelina, Bowie, Brazos, Burleson, Cass, Cherokee and 21 more6 hr
May 8, 3:47 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Childress, Collingsworth, Dallam and 19 more118 min
May 8, 3:48 PM CDTMesoscale DiscussionSPCHardin, Jasper, Newton, Orange, Sabine, San Augustine and 2 more117 min
May 8, 5:55 PM CDTMesoscale DiscussionSPCJasper, Newton95 min

Nearby

Severe Thunderstorm Watches in Texas, 2019Every severe thunderstorm watch in 2019

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.