Alert archive / Texas / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 174
The Storm Prediction Center issued this severe thunderstorm watch at Apr 14, 2012, 10:29 PM CDT for Comanche County, Cotton County, Tillman County, Oklahoma; 49 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2012, 10:29 PM CDT (03:29 UTC)
- Expired
- Apr 15, 2012, 4:33 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 52 counties
Comanche County, OK, Cotton County, OK, Tillman County, OK, Andrews County, TX, Archer County, TX, Baylor County, TX, Borden County, TX, Briscoe County, TX, Callahan County, TX, Childress County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Cottle County, TX, Crockett County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Ector County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Runnels County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Lubbock radar (KLBB), 119 km from the middle of the area, began a volume at 03:29 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
- 30%
- 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
- 70%
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 |
|---|---|---|---|---|
| Apr 14, 10:38 PM CDT | Severe Thunderstorm Warning | LUB | Garza, Lynn | 67 min |
| Apr 14, 10:40 PM CDT | Severe Thunderstorm Warning | LUB | Crosby, Lubbock | 65 min |
| Apr 14, 11:13 PM CDT | Severe Thunderstorm Warning | MAF | Borden, Dawson | 62 min |
| Apr 14, 11:14 PM CDT | Severe Thunderstorm Warning | LUB | Floyd, Motley | 31 min |
| Apr 14, 11:25 PM CDT | Severe Thunderstorm Warning | LUB | Dickens, Motley | 35 min |
| Apr 14, 11:43 PM CDT | Severe Thunderstorm Warning | LUB | Crosby, Dickens | 47 min |
| Apr 14, 11:45 PM CDT | Severe Thunderstorm Warning | LUB | Dickens, Garza, Kent | 45 min |
| Apr 14, 11:52 PM CDT | Tornado Warning | LUB | Cottle, Motley | 23 min |
| Apr 15, 12:15 AM CDT | Severe Thunderstorm Warning | LUB | Cottle | 30 min |
| Apr 15, 12:23 AM CDT | Severe Thunderstorm Warning | LUB | Cottle, Dickens, King | 52 min |
| Apr 15, 12:24 AM CDT | Severe Thunderstorm Warning | MAF | Borden, Dawson, Howard, Martin, Scurry | 51 min |
| Apr 15, 12:27 AM CDT | Severe Thunderstorm Warning | LUB | Dickens, Garza, Kent | 48 min |
| Apr 15, 12:32 AM CDT | Severe Thunderstorm Warning | MAF | Glasscock, Howard, Martin, Midland | 58 min |
| Apr 15, 12:39 AM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman, Knox, Wilbarger | 66 min |
| Apr 15, 12:45 AM CDT | Severe Thunderstorm Warning | LUB | Childress, Cottle | 15 min |
| Apr 15, 1:00 AM CDT | Severe Thunderstorm Warning | MAF | Glasscock, Midland, Reagan, Upton | 60 min |
| Apr 15, 1:18 AM CDT | Severe Thunderstorm Warning | MAF | Glasscock, Howard | 57 min |
| Apr 15, 1:36 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Comanche, Custer, Dewey and 3 more | 54 min |
| Apr 15, 1:40 AM CDT | Severe Thunderstorm Warning | MAF | Glasscock, Howard, Reagan, Upton | 65 min |
| Apr 15, 1:41 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Jackson, Kiowa, Tillman | 64 min |
| Apr 15, 1:59 AM CDT | Severe Thunderstorm Warning | MAF | Mitchell | 61 min |
| Apr 15, 2:02 AM CDT | Severe Thunderstorm Warning | SJT | Sterling | 43 min |
| Apr 15, 2:34 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Comanche, Grady, Kingfisher and 3 more | 56 min |
| Apr 15, 2:44 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Grady, Jefferson, Stephens, Tillman | 45 min |
| Apr 15, 2:44 AM CDT | Severe Thunderstorm Warning | SJT | Coke, Sterling | 46 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, 3.5 hours before the alert went out and 219 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
- 5237 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 112 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 |
|---|---|---|---|---|
| Apr 14, 7:15 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Grant, Major | 60 min |
| Apr 15, 1:37 AM CDT | Tornado Watch | SPC | Alfalfa, Blaine, Caddo, Canadian, Cleveland, Creek and 27 more | 5 hr |
| Apr 15, 4:32 AM CDT | Mesoscale Discussion | SPC | Cleveland, Craig, Creek, Hughes, Lincoln, McIntosh and 14 more | 88 min |
| Apr 15, 6:35 AM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 10 more | 85 min |
| Apr 15, 6:38 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 7 more | 4 hr |
| Apr 15, 9:25 AM CDT | Mesoscale Discussion | SPC | LeFlore, McCurtain | 95 min |
| Apr 15, 10:51 AM CDT | Tornado Watch | SPC | LeFlore | 7 hr |
| Apr 14, 10:11 PM CDT | Mesoscale Discussion | SPC | Borden, Childress, Collingsworth, Cottle, Crosby, Dawson and 17 more | 34 min |
| Apr 15, 3:44 PM CDT | Mesoscale Discussion | SPC | Panola, Shelby | 91 min |
| Apr 15, 6:29 PM CDT | Mesoscale Discussion | SPC | Refugio, San Patricio | 91 min |
Nearby
Severe Thunderstorm Watches in Texas, 2012Severe Thunderstorm Watches in Oklahoma, 2012Every severe thunderstorm watch in 2012
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.