Alert archive / Arkansas / Tornado Watches in 2008
Tornado Watch 276
The Storm Prediction Center issued this tornado watch at May 7, 2008, 9:35 PM CDT for 42 counties in Arkansas; 20 parishes in Louisiana. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 7, 2008, 9:35 PM CDT (02:35 UTC)
- Expired
- May 8, 2008, 3:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 62 counties
Arkansas County, AR, Ashley County, AR, Baxter County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lincoln County, AR, Lonoke County, AR, Marion County, AR, Monroe County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Bienville Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Richland Parish, LA, Tensas Parish, LA, Union Parish, LA, West Carroll Parish, LA, Winn Parish, LA
The radar
The Little Rock radar (KLZK), 51 km from the middle of the area, began a volume at 02:36 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
- 30%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 9:42 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Union | 63 min |
| May 7, 9:52 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 53 min |
| May 7, 10:33 PM CDT | Severe Thunderstorm Warning | SHV | Union | 57 min |
| May 7, 10:44 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Grant, Jackson, Natchitoches, Red River, Sabine and 1 more | 61 min |
| May 7, 11:08 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Jackson, Lincoln, Ouachita, Union | 67 min |
| May 7, 11:46 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Grant, Jackson, LaSalle, Winn | 59 min |
| May 7, 11:54 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 51 min |
| May 7, 11:56 PM CDT | Severe Thunderstorm Warning | JAN | Ashley | 64 min |
| May 7, 11:58 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita, Union | 47 min |
| May 8, 12:45 AM CDT | Severe Thunderstorm Warning | SHV | Grant, LaSalle, Winn | 60 min |
| May 8, 12:48 AM CDT | Severe Thunderstorm Warning | SHV | Caldwell | 42 min |
| May 8, 12:50 AM CDT | Severe Thunderstorm Warning | JAN | Franklin, Richland | 40 min |
| May 8, 12:59 AM CDT | Severe Thunderstorm Warning | JAN | Chicot | 46 min |
| May 8, 1:40 AM CDT | Severe Thunderstorm Warning | JAN | East Carroll, Franklin, Madison, Tensas | 50 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
Springfield, MO (KSGF), launched 00:00Z, 2.6 hours before the alert went out and 297 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
- 29 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 10:28 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 38 more | 92 min |
| May 7, 11:49 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot | 116 min |
| May 8, 7:48 AM CDT | Mesoscale Discussion | SPC | Attala, Calhoun, Carroll, Chickasaw, Choctaw, Clay and 21 more | 87 min |
| May 8, 8:04 AM CDT | Tornado Watch | SPC | Alcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 22 more | 6 hr |
| May 8, 10:07 AM CDT | Mesoscale Discussion | SPC | Alcorn, Attala, Calhoun, Carroll, Chickasaw, Choctaw and 23 more | 83 min |
| May 8, 12:13 PM CDT | Mesoscale Discussion | SPC | Kemper, Lauderdale, Neshoba, Newton, Noxubee | 92 min |
| May 8, 12:40 PM CDT | Tornado Watch | SPC | Clarke, Covington, Jasper, Jones, Kemper, Lauderdale and 6 more | 5 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.