Alert archive / Texas / Tornado Watches in 2008
Tornado Watch 224
The Storm Prediction Center issued this tornado watch at Apr 23, 2008, 6:20 PM CDT for 30 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2008, 6:20 PM CDT (23:20 UTC)
- Expired
- Apr 24, 2008, 1:37 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Anderson County, TX, Bosque County, TX, Collin County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Freestone County, TX, Grayson County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Limestone County, TX, McLennan County, TX, Navarro County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX, Van Zandt County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 14 km from the middle of the area, began a volume at 23:21 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.
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 6:53 PM CDT | Tornado Warning | FWD | Hood, Parker | 67 min |
| Apr 23, 7:50 PM CDT | Severe Thunderstorm Warning | FWD | Hood, Somervell | 40 min |
| Apr 23, 7:54 PM CDT | Flash Flood Warning | FWD | Hood, Parker | 3 hr |
| Apr 23, 7:54 PM CDT | Severe Thunderstorm Warning | FWD | Johnson, Parker, Tarrant | 66 min |
| Apr 23, 8:08 PM CDT | Severe Thunderstorm Warning | FWD | Bosque | 52 min |
| Apr 23, 8:25 PM CDT | Severe Thunderstorm Warning | FWD | Ellis, Johnson, Tarrant | 50 min |
| Apr 23, 8:33 PM CDT | Severe Thunderstorm Warning | FWD | Hood, Somervell | 42 min |
| Apr 23, 8:43 PM CDT | Flash Flood Warning | FWD | Johnson, Tarrant | 2 hr |
| Apr 23, 8:44 PM CDT | Severe Thunderstorm Warning | FWD | Hill | 61 min |
| Apr 23, 9:08 PM CDT | Severe Thunderstorm Warning | FWD | Bosque | 52 min |
| Apr 23, 9:08 PM CDT | Severe Thunderstorm Warning | FWD | Dallas, Ellis | 67 min |
| Apr 23, 9:15 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 39 min |
| Apr 23, 9:20 PM CDT | Flash Flood Warning | FWD | Denton, Tarrant | 115 min |
| Apr 23, 9:26 PM CDT | Severe Thunderstorm Warning | FWD | Hill, Navarro | 64 min |
| Apr 23, 9:37 PM CDT | Flash Flood Warning | FWD | Bosque, Hamilton, Hill, Johnson, Somervell | 113 min |
| Apr 23, 9:46 PM CDT | Severe Thunderstorm Warning | FWD | Hill | 44 min |
| Apr 23, 9:56 PM CDT | Severe Thunderstorm Warning | FWD | Kaufman | 64 min |
| Apr 23, 10:27 PM CDT | Severe Thunderstorm Warning | FWD | Henderson, Navarro | 63 min |
| Apr 23, 10:30 PM CDT | Severe Thunderstorm Warning | FWD | Hill, Limestone, McLennan, Navarro | 60 min |
| Apr 23, 11:06 PM CDT | Severe Thunderstorm Warning | FWD | Freestone, Limestone | 54 min |
| Apr 23, 11:23 PM CDT | Severe Thunderstorm Warning | FWD | Anderson, Freestone | 67 min |
| Apr 23, 11:41 PM CDT | Flash Flood Warning | FWD | Collin, Hunt | 94 min |
| Apr 23, 11:44 PM CDT | Severe Thunderstorm Warning | FWD | Anderson, Leon | 47 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
Fort Worth, TX (KFWD), launched 12:00Z, 11.3 hours before the alert went out and 31 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
- 3092 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 632 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 2:01 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Wichita, Wilbarger | 89 min |
| Apr 23, 7:31 AM CDT | Mesoscale Discussion | SPC | Armstrong, Baylor, Borden, Briscoe, Carson, Childress and 36 more | 59 min |
| Apr 23, 9:32 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Armstrong, Bailey, Baylor, Briscoe, Carson and 46 more | 6 hr |
| Apr 23, 9:59 AM CDT | Mesoscale Discussion | SPC | Borden, Callahan, Coke, Dawson, Fisher, Garza and 18 more | 61 min |
| Apr 23, 10:07 AM CDT | Tornado Watch | SPC | Andrews, Borden, Coke, Concho, Crane, Dawson and 25 more | 6 hr |
| Apr 23, 11:42 AM CDT | Mesoscale Discussion | SPC | Clay, Collin, Cooke, Dallas, Denton, Fannin and 10 more | 2 hr |
| Apr 23, 1:35 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Coke, Crane, Dawson, Ector and 20 more | 85 min |
| Apr 23, 2:28 PM CDT | Mesoscale Discussion | SPC | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 18 more | 3 hr |
| Apr 23, 3:16 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Brown, Callahan, Coke, Coleman and 34 more | 59 min |
| Apr 23, 3:25 PM CDT | Tornado Watch | SPC | Andrews, Borden, Brown, Callahan, Coke, Coleman and 44 more | 8 hr |
| Apr 23, 3:37 PM CDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 15 more | 53 min |
| Apr 23, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Cochran and 31 more | 4 hr |
| Apr 23, 5:43 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Brown, Callahan, Coke, Coleman and 44 more | 92 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.