Alert archive / Arkansas / Mesoscale Discussions in 2008
Mesoscale Discussion 868
The Storm Prediction Center issued this mesoscale discussion at May 10, 2008, 6:22 PM CDT for 34 counties in Arkansas; 22 counties in Mississippi; 8 counties in Tennessee. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- May 10, 2008, 6:22 PM CDT (23:22 UTC)
- Expired
- May 10, 2008, 7:45 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 64 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, Woodruff County, AR, Alcorn County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN
The radar
The Little Rock radar (KLZK), 102 km from the middle of the area, began a volume at 23:23 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 11.4 hours before the alert went out and 142 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 247 m²/s²
- 0-3 km storm-relative helicity
- 337 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 4:05 AM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Clay, Cleburne, Craighead and 21 more | 115 min |
| May 10, 7:36 AM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Hempstead, Howard and 12 more | 2 hr |
| May 10, 9:40 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 37 more | 65 min |
| May 10, 10:11 AM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 29 more | 5 hr |
| May 10, 10:55 AM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more | 2 hr |
| May 10, 11:29 AM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Conway, Crawford and 15 more | 9 hr |
| May 10, 12:34 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Fulton, Greene, Independence, Lawrence and 4 more | 116 min |
| May 10, 2:23 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 25 more | 97 min |
| May 10, 3:36 PM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 36 more | 4 hr |
| May 10, 4:27 PM CDT | Tornado Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more | 10 hr |
| May 10, 5:13 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more | 2 hr |
| May 10, 6:51 PM CDT | Tornado Watch | SPC | Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 50 more | 7 hr |
| May 9, 11:08 PM CDT | Mesoscale Discussion | SPC | Alcorn, Calhoun, Chickasaw, Choctaw, Clay, Itawamba and 13 more | 2 hr |
| May 10, 2:28 PM CDT | Mesoscale Discussion | SPC | Choctaw, Clay, Lowndes, Monroe, Noxubee, Oktibbeha and 2 more | 2 hr |
| May 9, 7:55 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bledsoe, Blount, Bradley, Cocke, Grainger and 18 more | 4 hr |
| May 9, 10:37 PM CDT | Mesoscale Discussion | SPC | Blount, Cocke, Jefferson, Monroe, Sevier | 53 min |
Nearby
Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Mississippi, 2008Mesoscale Discussions in Tennessee, 2008Every mesoscale discussion 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.