Alert archive / Texas / Severe Thunderstorm Watches in 2011
Severe Thunderstorm Watch 459
The Storm Prediction Center issued this severe thunderstorm watch at Jun 10, 2011, 5:20 PM CDT for 9 counties in Oklahoma; 27 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2011, 5:20 PM CDT (22:20 UTC)
- Expired
- Jun 10, 2011, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 36 counties
Caddo County, OK, Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Washita County, OK, Baylor County, TX, Briscoe County, TX, Childress County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hockley County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Stonewall County, TX, Terry County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Lubbock radar (KLBB), 121 km from the middle of the area, began a volume at 22:20 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
- 50%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 5:34 PM CDT | Severe Thunderstorm Warning | LUB | Crosby, Floyd, Hale, Hockley, Lamb, Lubbock | 41 min |
| Jun 10, 5:43 PM CDT | Severe Thunderstorm Warning | LUB | Crosby, Dickens | 32 min |
| Jun 10, 6:14 PM CDT | Severe Thunderstorm Warning | LUB | Crosby, Dickens, King | 52 min |
| Jun 10, 6:26 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Kingfisher | 64 min |
| Jun 10, 6:33 PM CDT | Severe Thunderstorm Warning | LUB | Cottle, Dickens, King, Motley | 42 min |
| Jun 10, 7:10 PM CDT | Severe Thunderstorm Warning | LUB | Childress, Cottle, King, Motley | 50 min |
| Jun 10, 7:28 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman, Knox | 62 min |
| Jun 10, 7:52 PM CDT | Severe Thunderstorm Warning | LUB | Childress, Cottle, Hall, Motley | 53 min |
| Jun 10, 8:23 PM CDT | Severe Thunderstorm Warning | OUN | Greer | 52 min |
| Jun 10, 8:32 PM CDT | Severe Thunderstorm Warning | OUN | Harmon, Jackson, Tillman | 58 min |
| Jun 10, 8:38 PM CDT | Severe Thunderstorm Warning | LUB | Childress | 27 min |
| Jun 10, 8:48 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Washita | 57 min |
| Jun 10, 9:30 PM CDT | Severe Thunderstorm Warning | OUN | Washita | 60 min |
| Jun 10, 9:55 PM CDT | Severe Thunderstorm Warning | SJT | Fisher | 50 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 12:00Z, 10.3 hours before the alert went out and 197 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
- 3289 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 0 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 |
|---|---|---|---|---|
| Jun 9, 9:56 PM CDT | Mesoscale Discussion | SPC | Caddo, Canadian, Cleveland, Craig, Creek, Garvin and 18 more | 79 min |
| Jun 10, 3:31 PM CDT | Mesoscale Discussion | SPC | Blaine, Caddo, Canadian, Cleveland, Comanche, Cotton and 14 more | 2 hr |
| Jun 10, 4:18 PM CDT | Mesoscale Discussion | SPC | Nowata, Osage, Washington | 87 min |
| Jun 10, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | Blaine, Canadian, Craig, Custer, Dewey, Garfield and 14 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2011Severe Thunderstorm Watches in Oklahoma, 2011Every severe thunderstorm watch in 2011
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.