Alert archive / Arkansas / Tornado Watches in 2008
Tornado Watch 189
The Storm Prediction Center issued this tornado watch at Apr 10, 2008, 8:42 AM CDT for 25 counties in Arkansas; 12 parishes in Louisiana. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 10, 2008, 8:42 AM CDT (13:42 UTC)
- Expired
- Apr 10, 2008, 4:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 70 kt
All 37 counties
Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lafayette County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Nevada County, AR, Ouachita County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA
The radar
The Little Rock radar (KLZK), 106 km from the middle of the area, began a volume at 13:45 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- 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
- 80%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 9:09 AM CDT | Tornado Warning | SHV | Columbia, Hempstead, Lafayette, Miller, Nevada | 36 min |
| Apr 10, 9:33 AM CDT | Tornado Warning | SHV | Nevada | 27 min |
| Apr 10, 9:44 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Dallas, Grant, Hot Spring | 46 min |
| Apr 10, 10:26 AM CDT | Tornado Warning | LZK | Clark, Dallas, Grant, Hot Spring, Saline | 49 min |
| Apr 10, 11:11 AM CDT | Tornado Warning | LZK | Lonoke, Pulaski, Saline | 49 min |
| Apr 10, 11:31 AM CDT | Flash Flood Warning | LZK | Grant, Jefferson, Lonoke, Prairie, Pulaski, Saline and 1 more | 2 hr |
| Apr 10, 11:38 AM CDT | Severe Thunderstorm Warning | LZK | Grant, Jefferson, Lonoke, Prairie, Pulaski | 40 min |
| Apr 10, 11:54 AM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson, Prairie, White, Woodruff | 51 min |
| Apr 10, 1:37 PM CDT | Severe Thunderstorm Warning | LZK | Jackson, Monroe, Prairie, White, Woodruff | 38 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
Shreveport, LA (KSHV), launched 12:00Z, 1.7 hours before the alert went out and 197 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
- 580 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 773 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 615 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 7:28 PM CDT | Mesoscale Discussion | SPC | Crawford, Franklin, Hempstead, Howard, Johnson, Little River and 8 more | 62 min |
| Apr 9, 8:10 PM CDT | Tornado Watch | SPC | Hempstead, Howard, Johnson, Little River, Logan, Montgomery and 6 more | 6 hr |
| Apr 9, 10:40 PM CDT | Tornado Watch | SPC | Crawford, Franklin, Sebastian | 7 hr |
| Apr 10, 1:45 AM CDT | Tornado Watch | SPC | Baxter, Boone, Cleburne, Conway, Faulkner, Fulton and 16 more | 8 hr |
| Apr 10, 3:00 AM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more | 60 min |
| Apr 10, 3:28 AM CDT | Tornado Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more | 7 hr |
| Apr 10, 3:54 AM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Hempstead, Howard and 10 more | 8 hr |
| Apr 10, 5:55 AM CDT | Mesoscale Discussion | SPC | Crawford, Franklin, Howard, Johnson, Little River, Logan and 4 more | 65 min |
| Apr 10, 8:32 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Clark, Cleveland, Columbia and 22 more | 58 min |
| Apr 10, 9:27 AM CDT | Mesoscale Discussion | SPC | Clay, Cleburne, Conway, Craighead, Crittenden, Cross and 16 more | 2 hr |
| Apr 10, 9:51 AM CDT | Tornado Watch | SPC | Clay, Cleburne, Conway, Craighead, Crittenden, Cross and 19 more | 7 hr |
| Apr 10, 10:51 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 28 more | 84 min |
| Apr 10, 1:41 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 20 more | 2 hr |
Nearby
Tornado Watches in Arkansas, 2008Tornado Watches in Louisiana, 2008Every tornado watch in 2008
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.