Alert archive / Texas / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 146
The Storm Prediction Center issued this severe thunderstorm watch at May 11, 2014, 8:18 PM CDT for 11 counties in Oklahoma; 23 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 11, 2014, 8:18 PM CDT (01:18 UTC)
- Expired
- May 12, 2014, 2:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 34 counties
Beckham County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Roberts County, TX, Stonewall County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 132 km from the middle of the area, began a volume at 01:18 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
- 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 10:42 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Donley, Gray, Wheeler | 63 min |
| May 11, 11:07 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Gray, Hemphill, Roberts, Wheeler | 38 min |
| May 11, 11:15 PM CDT | Severe Thunderstorm Warning | LUB | Briscoe, Hall | 30 min |
| May 11, 11:40 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Collingsworth, Donley, Gray, Hemphill, Lipscomb and 2 more | 95 min |
| May 11, 11:43 PM CDT | Severe Thunderstorm Warning | LUB | Hall | 32 min |
| May 12, 1:27 AM CDT | Severe Thunderstorm Warning | AMA | Collingsworth, Donley, Gray, Wheeler | 63 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 1.3 hours before the alert went out and 131 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 5049 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 33 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 11, 7:51 PM CDT | Mesoscale Discussion | SPC | Beckham, Greer, Harmon, Jackson, Kiowa, Roger Mills and 2 more | 54 min |
| May 11, 8:30 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Harper, Woods, Woodward | 90 min |
| May 11, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 13 more | 6 hr |
| May 11, 11:41 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Dewey, Ellis, Major, Roger Mills and 2 more | 64 min |
| May 12, 11:52 AM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Coal and 25 more | 83 min |
| May 12, 2:12 PM CDT | Mesoscale Discussion | SPC | Delaware, Ottawa | 2 hr |
| May 12, 2:38 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 17 more | 97 min |
| May 12, 6:08 PM CDT | Mesoscale Discussion | SPC | Burnet, Coryell, Gillespie, Kerr, Kimble, Lampasas and 4 more | 97 min |
Nearby
Severe Thunderstorm Watches in Texas, 2014Severe Thunderstorm Watches in Oklahoma, 2014Every severe thunderstorm watch in 2014
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.