Alert archive / Texas / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 170
The Storm Prediction Center issued this severe thunderstorm watch at May 11, 2016, 4:29 PM CDT for 26 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 11, 2016, 4:29 PM CDT (21:29 UTC)
- Expired
- May 11, 2016, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 26 counties
Brown County, TX, Callahan County, TX, Coleman County, TX, Comanche County, TX, Denton County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Haskell County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Jones County, TX, Kent County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Stonewall County, TX, Tarrant County, TX, Taylor County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 47 km from the middle of the area, began a volume at 21:30 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
- 30%
- 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
25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 4:43 PM CDT | Severe Thunderstorm Warning | LUB | Stonewall | 62 min |
| May 11, 5:04 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Jones | 56 min |
| May 11, 5:45 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Haskell, Jones | 45 min |
| May 11, 6:15 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Shackelford | 45 min |
| May 11, 6:42 PM CDT | Tornado Warning | SJT | Shackelford | 33 min |
| May 11, 7:05 PM CDT | Severe Thunderstorm Warning | FWD | Eastland, Stephens | 55 min |
| May 11, 7:06 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Shackelford | 39 min |
| May 11, 7:17 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Taylor | 43 min |
| May 11, 7:18 PM CDT | Severe Thunderstorm Warning | SJT | Coleman | 42 min |
| May 11, 7:36 PM CDT | Severe Thunderstorm Warning | SJT | Jones | 39 min |
| May 11, 7:40 PM CDT | Severe Thunderstorm Warning | FWD | Jack | 65 min |
| May 11, 7:53 PM CDT | Severe Thunderstorm Warning | FWD | Eastland, Palo Pinto, Stephens | 67 min |
| May 11, 7:58 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Coleman | 47 min |
| May 11, 8:38 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Callahan, Coleman | 52 min |
| May 11, 8:46 PM CDT | Flash Flood Warning | SJT | Brown, Callahan, Coleman | 3 hr |
| May 11, 8:56 PM CDT | Severe Thunderstorm Warning | SJT | Coleman, Runnels | 49 min |
| May 11, 8:58 PM CDT | Severe Thunderstorm Warning | FWD | Palo Pinto, Parker | 62 min |
| May 11, 9:07 PM CDT | Severe Thunderstorm Warning | FWD | Eastland, Erath, Palo Pinto, Stephens | 68 min |
| May 11, 9:28 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Callahan, Coleman | 47 min |
| May 11, 9:42 PM CDT | Severe Thunderstorm Warning | FWD | Parker, Tarrant | 63 min |
| May 11, 9:44 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Coleman, Taylor | 46 min |
| May 11, 10:24 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Coleman | 66 min |
| May 11, 10:27 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Shackelford | 48 min |
| May 11, 10:49 PM CDT | Severe Thunderstorm Warning | FWD | Collin, Dallas, Denton | 26 min |
| May 11, 11:00 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Jones, Shackelford, Taylor | 45 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 12:00Z, 9.5 hours before the alert went out and 205 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.
- Mixed-layer CAPE
- 3 J/kg
- Mixed-layer CIN
- -658 J/kg
- Mixed-layer LCL
- 2066 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 9:43 PM CDT | Mesoscale Discussion | SPC | Bandera, Bell, Blanco, Bosque, Brown, Burnet and 61 more | 62 min |
| May 11, 2:32 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Denton and 21 more | 88 min |
| May 11, 3:16 PM CDT | Mesoscale Discussion | SPC | Dallam, Hansford, Hartley, Hutchinson, Moore, Oldham and 2 more | 119 min |
| May 11, 6:53 PM CDT | Mesoscale Discussion | SPC | Armstrong, Carson, Collingsworth, Donley, Gray, Hartley and 7 more | 3 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.