Alert archive / Texas / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 68
The Storm Prediction Center issued this severe thunderstorm watch at Mar 22, 2007, 5:57 PM CDT for 38 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 22, 2007, 5:57 PM CDT (22:57 UTC)
- Expired
- Mar 23, 2007, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 38 counties
Andrews County, TX, Borden County, TX, Brewster County, TX, Briscoe County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Cottle County, TX, Crane County, TX, Crosby County, TX, Culberson County, TX, Dawson County, TX, Dickens County, TX, Ector County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Hale County, TX, Hall County, TX, Hockley County, TX, Jeff Davis County, TX, Kent County, TX, King County, TX, Lamb County, TX, Loving County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Motley County, TX, Pecos County, TX, Presidio County, TX, Reeves County, TX, Swisher County, TX, Terry County, TX, Ward County, TX, Winkler County, TX, Yoakum County, TX
The radar
The Midland/Odessa radar (KMAF), 97 km from the middle of the area, began a volume at 22:58 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
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 6:35 PM CDT | Severe Thunderstorm Warning | MAF | Pecos | 55 min |
| Mar 22, 6:39 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 66 min |
| Mar 22, 7:42 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 63 min |
| Mar 22, 8:45 PM CDT | Severe Thunderstorm Warning | MAF | Brewster | 45 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 12:00Z, 11.0 hours before the alert went out and 96 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
- 715 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 740 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 7:56 PM CDT | Mesoscale Discussion | SPC | Beckham, Greer, Harmon, Jackson, Roger Mills | 64 min |
| Mar 22, 1:59 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Blaine, Craig, Custer, Dewey and 10 more | 2 hr |
| Mar 22, 7:55 AM CDT | Mesoscale Discussion | SPC | Andrews, Armstrong, Bailey, Briscoe, Castro, Cochran and 19 more | 65 min |
| Mar 22, 12:42 PM CDT | Mesoscale Discussion | SPC | Andrews, Bailey, Castro, Cochran, Crane, Culberson and 16 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2007Every severe thunderstorm watch in 2007
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.