Alert archive / Texas / Tornado Watches in 2008
Tornado Watch 174
The Storm Prediction Center issued this tornado watch at Apr 8, 2008, 8:48 PM CDT for 17 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 8, 2008, 8:48 PM CDT (01:48 UTC)
- Expired
- Apr 8, 2008, 11:00 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
Counties Bell County, TX, Burnet County, TX, Coryell County, TX, Falls County, TX, Gillespie County, TX, Kimble County, TX, Lampasas County, TX, Limestone County, TX, Llano County, TX, Mason County, TX, McLennan County, TX, Menard County, TX, Milam County, TX, Robertson County, TX, San Saba County, TX, Sutton County, TX, Williamson County, TX
The radar
The Ft Hood radar (KGRK), 143 km from the middle of the area, began a volume at 01:52 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 70%
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 8, 8:55 PM CDT | Tornado Warning | FWD | Bell | 50 min |
| Apr 8, 8:58 PM CDT | Severe Thunderstorm Warning | FWD | McLennan | 62 min |
| Apr 8, 9:18 PM CDT | Severe Thunderstorm Warning | FWD | Coryell | 16 min |
| Apr 8, 9:25 PM CDT | Severe Thunderstorm Warning | SJT | Mason | 25 min |
| Apr 8, 9:43 PM CDT | Severe Thunderstorm Warning | FWD | Lampasas | 32 min |
| Apr 8, 9:51 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 24 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
Del Rio, TX (KDRT), launched 00:00Z, 1.8 hours before the alert went out and 250 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
- 707 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 2246 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 7:33 PM CDT | Mesoscale Discussion | SPC | Bowie, Camp, Cass, Franklin, Gregg, Harrison and 6 more | 117 min |
| Apr 8, 8:06 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Burnet, Coryell, Ellis, Falls and 16 more | 114 min |
| Apr 8, 10:36 PM CDT | Mesoscale Discussion | SPC | Bosque, Bowie, Brown, Camp, Cass, Collin and 34 more | 84 min |
| Apr 8, 11:51 PM CDT | Severe Thunderstorm Watch | SPC | Bosque, Bowie, Camp, Cass, Collin, Comanche and 39 more | 5 hr |
| Apr 9, 3:29 AM CDT | Mesoscale Discussion | SPC | Bosque, Bowie, Camp, Cass, Collin, Comanche and 39 more | 61 min |
| Apr 9, 6:00 AM CDT | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Castro, Childress, Cochran and 22 more | 60 min |
| Apr 9, 6:27 AM CDT | Severe Thunderstorm Watch | SPC | Andrews, Armstrong, Bailey, Borden, Briscoe, Carson and 36 more | 8 hr |
| Apr 9, 9:06 AM CDT | Mesoscale Discussion | SPC | Andrews, Archer, Armstrong, Bailey, Baylor, Borden and 64 more | 54 min |
| Apr 9, 9:35 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Clay, Fisher, Foard, Hardeman and 14 more | 6 hr |
| Apr 9, 12:24 PM CDT | Mesoscale Discussion | SPC | Archer, Armstrong, Baylor, Briscoe, Carson, Childress and 37 more | 66 min |
| Apr 9, 12:46 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Callahan, Coke, Coleman, Comanche and 41 more | 59 min |
| Apr 9, 1:20 PM CDT | Tornado Watch | SPC | Bosque, Brown, Callahan, Coke, Coleman, Comanche and 40 more | 7 hr |
| Apr 9, 3:33 PM CDT | Mesoscale Discussion | SPC | Collin, Cooke, Dallas, Delta, Denton, Ellis and 16 more | 27 min |
| Apr 9, 3:48 PM CDT | Tornado Watch | SPC | Anderson, Collin, Cooke, Dallas, Delta, Denton and 22 more | 7 hr |
| Apr 9, 4:01 PM CDT | Mesoscale Discussion | SPC | Cass, Harrison, Marion | 59 min |
| Apr 9, 5:12 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Bell, Borden, Bosque, Brown and 51 more | 63 min |
| Apr 9, 6:12 PM CDT | Mesoscale Discussion | SPC | Briscoe, Childress, Cottle, Crosby, Dickens, Floyd and 13 more | 63 min |
| Apr 9, 6:55 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Childress, Clay, Cottle, Dickens and 8 more | 8 hr |
| Apr 9, 6:59 PM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Concho and 34 more | 61 min |
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.