Alert archive / Texas / Tornado Watches in 2010
Tornado Watch 78
The Storm Prediction Center issued this tornado watch at Apr 22, 2010, 9:32 PM CDT for 26 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 22, 2010, 9:32 PM CDT (02:32 UTC)
- Expired
- Apr 23, 2010, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 26 counties
Callahan County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crane County, TX, Crockett County, TX, Ector County, TX, Edwards County, TX, Glasscock County, TX, Irion County, TX, Kimble County, TX, McCulloch County, TX, Menard County, TX, Midland County, TX, Pecos County, TX, Reagan County, TX, Runnels County, TX, Schleicher County, TX, Shackelford County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Tom Green County, TX, Upton County, TX, Val Verde County, TX
The radar
The San Angelo radar (KSJT), 88 km from the middle of the area, began a volume at 02:35 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
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 |
|---|---|---|---|---|
| Apr 22, 10:29 PM CDT | Severe Thunderstorm Warning | MAF | Crane, Midland, Upton | 61 min |
| Apr 22, 10:32 PM CDT | Severe Thunderstorm Warning | MAF | Midland | 43 min |
| Apr 22, 10:35 PM CDT | Severe Thunderstorm Warning | MAF | Crane, Pecos, Reagan, Upton | 55 min |
| Apr 22, 11:30 PM CDT | Severe Thunderstorm Warning | MAF | Reagan, Upton | 60 min |
| Apr 22, 11:33 PM CDT | Severe Thunderstorm Warning | SJT | Crockett | 42 min |
| Apr 23, 1:35 AM CDT | Severe Thunderstorm Warning | SJT | Callahan, Taylor | 40 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
Midland Regional, TX (KMAF), launched 00:00Z, 2.5 hours before the alert went out and 102 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
- 1537 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1852 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 9.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 7:45 PM CDT | Mesoscale Discussion | SPC | Briscoe, Childress, Collingsworth, Cottle, Crosby, Dickens and 20 more | 60 min |
| Apr 22, 8:31 PM CDT | Tornado Watch | SPC | Andrews, Archer, Baylor, Borden, Briscoe, Childress and 35 more | 7 hr |
| Apr 22, 9:17 PM CDT | Mesoscale Discussion | SPC | Coke, Concho, Crane, Crockett, Ector, Edwards and 16 more | 28 min |
| Apr 23, 12:00 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Borden, Briscoe, Callahan, Childress and 53 more | 60 min |
| Apr 23, 2:01 AM CDT | Mesoscale Discussion | SPC | Archer, Callahan, Clay, Coleman, Concho, Eastland and 8 more | 119 min |
| Apr 23, 8:28 AM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Cherokee, Franklin, Gregg and 18 more | 62 min |
| Apr 23, 9:53 AM CDT | Tornado Watch | SPC | Bowie, Camp, Cass, Franklin, Gregg, Harrison and 10 more | 7 hr |
| Apr 23, 2:50 PM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bastrop, Bowie, Brazos, Burleson and 28 more | 115 min |
| Apr 23, 5:24 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bowie, Brazos, Burleson, Camp and 31 more | 36 min |
| Apr 23, 5:41 PM CDT | Tornado Watch | SPC | Anderson, Angelina, Bell, Bowie, Brazos, Burleson and 38 more | 9 hr |
Nearby
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.