Alert archive / Texas / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 122
The Storm Prediction Center issued this severe thunderstorm watch at Apr 28, 2016, 10:54 PM CDT for Beaver County, Cimarron County, Texas County, Oklahoma; 42 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2016, 10:54 PM CDT (03:54 UTC)
- Expired
- Apr 29, 2016, 6:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 45 counties
Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dallam County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX
The radar
The Amarillo radar (KAMA), 21 km from the middle of the area, began a volume at 03:57 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
- 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 11:35 PM CDT | Severe Thunderstorm Warning | AMA | Cimarron | 40 min |
| Apr 28, 11:43 PM CDT | Severe Thunderstorm Warning | AMA | Dallam | 47 min |
| Apr 29, 12:25 AM CDT | Severe Thunderstorm Warning | AMA | Cimarron | 39 min |
| Apr 29, 1:02 AM CDT | Severe Thunderstorm Warning | AMA | Cimarron, Texas | 43 min |
| Apr 29, 1:39 AM CDT | Severe Thunderstorm Warning | AMA | Texas | 26 min |
| Apr 29, 2:53 AM CDT | Severe Thunderstorm Warning | AMA | Beaver, Texas | 52 min |
| Apr 29, 3:59 AM CDT | Severe Thunderstorm Warning | AMA | Beaver | 21 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, 3.9 hours before the alert went out and 22 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
- 699 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1006 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 290 m²/s²
- 0-3 km storm-relative helicity
- 462 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 12.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 1:58 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Garvin and 14 more | 2 hr |
| Apr 29, 2:59 AM CDT | Mesoscale Discussion | SPC | Beaver, Ellis, Harper | 91 min |
| Apr 29, 4:21 AM CDT | Severe Thunderstorm Watch | SPC | Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 2 more | 6 hr |
| Apr 29, 4:54 AM CDT | Mesoscale Discussion | SPC | Harmon | 66 min |
| Apr 29, 12:51 PM CDT | Mesoscale Discussion | SPC | McCurtain | 114 min |
| Apr 29, 1:40 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Comanche and 15 more | 65 min |
| Apr 29, 1:43 PM CDT | Tornado Watch | SPC | McCurtain | 8 hr |
| Apr 29, 1:57 PM CDT | Tornado Watch | SPC | Atoka, Bryan, Caddo, Canadian, Carter, Choctaw and 27 more | 8 hr |
| Apr 29, 3:56 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Caddo, Carter, Cleveland, Coal and 18 more | 64 min |
| Apr 29, 5:42 PM CDT | Mesoscale Discussion | SPC | McCurtain | 93 min |
| Apr 29, 6:16 PM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Carter, Cherokee, Choctaw and 25 more | 89 min |
| Apr 28, 7:52 PM CDT | Mesoscale Discussion | SPC | Bell, Brazos, Burleson, Burnet, Coryell, Falls and 7 more | 83 min |
| Apr 28, 10:31 PM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 30 more | 89 min |
| Apr 29, 7:38 AM CDT | Mesoscale Discussion | SPC | Briscoe, Cottle, Crosby, Dickens, Floyd, Foard and 10 more | 97 min |
| Apr 29, 9:46 AM CDT | Mesoscale Discussion | SPC | Bowie, Cass, Harrison, Marion, Morris | 89 min |
| Apr 29, 12:52 PM CDT | Mesoscale Discussion | SPC | Bell, Blanco, Bosque, Brown, Burnet, Comanche and 22 more | 113 min |
| Apr 29, 1:08 PM CDT | Tornado Watch | SPC | Anderson, Bell, Bosque, Collin, Comanche, Cooke and 35 more | 9 hr |
| Apr 29, 3:34 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Collin, Cooke, Coryell, Dallas and 31 more | 86 min |
Nearby
Severe Thunderstorm Watches in Texas, 2016Severe Thunderstorm Watches in Oklahoma, 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.