Alert archive / Texas / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 147
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2015, 2:11 AM MDT for 6 counties in New Mexico; Beaver County, Cimarron County, Texas County, Oklahoma; 52 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2015, 2:11 AM MDT (08:11 UTC)
- Expired
- May 9, 2015, 10:00 AM MDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 61 counties
Curry County, NM, Harding County, NM, Lea County, NM, Quay County, NM, Roosevelt County, NM, Union County, NM, Beaver County, OK, Cimarron County, OK, Texas County, OK, Andrews County, TX, Armstrong County, TX, Bailey County, TX, Borden 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, Dawson County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Gaines 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, Howard County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Mitchell 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, Scurry County, TX, Sherman County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX
The radar
The Lubbock radar (KLBB), 72 km from the middle of the area, began a volume at 08:12 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
- 30%
- One or more gusts of 65 knots or more
- 10%
- 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 2:35 AM MDT | Severe Thunderstorm Warning | ABQ | Roosevelt | 40 min |
| May 9, 2:48 AM MDT | Severe Thunderstorm Warning | ABQ | Curry, Quay | 30 min |
| May 9, 2:54 AM MDT | Severe Thunderstorm Warning | ABQ | Curry, Quay, Roosevelt | 25 min |
| May 9, 3:13 AM MDT | Severe Thunderstorm Warning | LUB | Bailey, Parmer | 47 min |
| May 9, 3:16 AM MDT | Severe Thunderstorm Warning | ABQ | Harding, Quay, San Miguel, Union | 44 min |
| May 9, 3:23 AM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Oldham, Potter, Randall | 67 min |
| May 9, 3:55 AM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Hartley, Oldham | 33 min |
| May 9, 3:58 AM MDT | Severe Thunderstorm Warning | LUB | Castro, Parmer | 24 min |
| May 9, 4:24 AM MDT | Severe Thunderstorm Warning | AMA | Moore, Potter, Randall | 66 min |
| May 9, 5:28 AM MDT | Severe Thunderstorm Warning | AMA | Armstrong, Carson, Gray | 62 min |
| May 9, 8:54 AM MDT | Severe Thunderstorm Warning | LUB | Hall | 51 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, 8.2 hours before the alert went out and 142 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
- 20 J/kg
- Mixed-layer CIN
- -217 J/kg
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 6:55 PM MDT | Mesoscale Discussion | SPC | Colfax, Harding, Union | 2 hr |
| May 9, 1:34 AM MDT | Mesoscale Discussion | SPC | Curry, Harding, Lea, Quay, Roosevelt | 116 min |
| May 8, 6:27 PM MDT | Tornado Watch | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Creek and 18 more | 6 hr |
| May 8, 9:43 PM MDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Haskell, Latimer and 4 more | 92 min |
| May 9, 3:03 AM MDT | Mesoscale Discussion | SPC | Comanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more | 57 min |
| May 9, 4:51 AM MDT | Mesoscale Discussion | SPC | Beaver, Beckham, Blaine, Cimarron, Comanche, Custer and 14 more | 84 min |
| May 9, 6:36 AM MDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 22 more | 6 hr |
| May 9, 8:41 AM MDT | Mesoscale Discussion | SPC | Atoka, Bryan, Choctaw, Coal, Johnston, LeFlore and 5 more | 2 hr |
| May 9, 10:36 AM MDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Caddo, Comanche, Cotton, Greer and 7 more | 84 min |
| May 9, 12:21 PM MDT | Tornado Watch | SPC | Atoka, Bryan, Caddo, Canadian, Carter, Cleveland and 23 more | 10 hr |
| May 9, 12:58 PM MDT | Mesoscale Discussion | SPC | LeFlore, McCurtain | 92 min |
| May 9, 1:40 PM MDT | Tornado Watch | SPC | McCurtain | 7 hr |
| May 9, 2:32 PM MDT | Mesoscale Discussion | SPC | Bryan, Carter, Coal, Cotton, Garvin, Hughes and 10 more | 118 min |
| May 9, 3:52 PM MDT | Mesoscale Discussion | SPC | Beckham, Greer, Harmon, Roger Mills | 83 min |
| May 9, 4:52 PM MDT | Mesoscale Discussion | SPC | Bryan, Carter, Cotton, Jefferson, Johnston, Love and 1 more | 83 min |
| May 8, 7:42 PM MDT | Mesoscale Discussion | SPC | Andrews, Borden, Callahan, Coke, Coleman, Concho and 28 more | 2 hr |
| May 8, 9:48 PM MDT | Mesoscale Discussion | SPC | Andrews, Borden, Callahan, Coke, Crane, Crockett and 26 more | 87 min |
| May 9, 4:06 PM MDT | Mesoscale Discussion | SPC | Cass | 54 min |
| May 9, 5:21 PM MDT | Mesoscale Discussion | SPC | Brown, Coleman, Comanche, Eastland, Erath, Hood and 6 more | 84 min |
Nearby
Severe Thunderstorm Watches in Texas, 2015Severe Thunderstorm Watches in New Mexico, 2015Severe Thunderstorm Watches in Oklahoma, 2015Every severe thunderstorm watch in 2015
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.