Alert archive / Texas / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 98

April 19, 201622 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 19, 2016, 9:59 PM CDT for 22 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 19, 2016, 9:59 PM CDT (02:59 UTC)
Expired
Apr 20, 2016, 3:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 22 counties

Brown County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Cooke County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Haskell County, TX, Hood County, TX, Jack County, TX, Jones County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Taylor County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 48 km from the middle of the area, began a volume at 03:03 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
20%
One or more gusts of 65 knots or more
10%
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

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

IssuedProductOfficeCountiesLasted
Apr 19, 10:27 PM CDTSevere Thunderstorm WarningSJTHaskell, Shackelford, Throckmorton48 min
Apr 19, 10:33 PM CDTSevere Thunderstorm WarningSJTFisher, Jones42 min
Apr 19, 10:35 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford40 min
Apr 19, 10:40 PM CDTSevere Thunderstorm WarningFWDJack, Montague, Wise50 min
Apr 19, 11:05 PM CDTSevere Thunderstorm WarningSJTJones, Taylor40 min
Apr 19, 11:09 PM CDTSevere Thunderstorm WarningSJTShackelford, Throckmorton15 min
Apr 19, 11:13 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford47 min
Apr 19, 11:14 PM CDTSevere Thunderstorm WarningFWDCooke, Montague, Wise46 min
Apr 19, 11:41 PM CDTSevere Thunderstorm WarningFWDCooke49 min
Apr 19, 11:55 PM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford35 min
Apr 20, 12:03 AM CDTSevere Thunderstorm WarningFWDEastland, Stephens42 min
Apr 20, 12:12 AM CDTSevere Thunderstorm WarningSJTBrown, Callahan, Coleman48 min
Apr 20, 12:36 AM CDTFlash Flood WarningFWDPalo Pinto, Stephens4 hr
Apr 20, 12:44 AM CDTSevere Thunderstorm WarningFWDPalo Pinto, Parker61 min
Apr 20, 12:52 AM CDTTornado WarningFWDPalo Pinto, Parker23 min
Apr 20, 1:24 AM CDTFlash Flood WarningSJTCallahan3 hr

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, 3.0 hours before the alert went out and 153 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 2016-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2016-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1336 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 19, 8:45 PM CDTMesoscale DiscussionSPCArcher, Baylor, Bell, Blanco, Borden, Bosque and 67 more3 hr
Apr 19, 11:39 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Collin, Comanche and 25 more2 hr
Apr 20, 1:37 AM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Collin, Comanche, Dallas and 14 more53 min
Apr 20, 2:41 PM CDTMesoscale DiscussionSPCConcho, Crockett, Irion, Kimble, McCulloch, Mason and 6 more2 hr
Apr 20, 4:54 PM CDTMesoscale DiscussionSPCArmstrong, Borden, Briscoe, Carson, Childress, Collingsworth and 27 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.