Alert archive / Arkansas / Mesoscale Discussions in 2005
Mesoscale Discussion 185
The Storm Prediction Center issued this mesoscale discussion at Feb 21, 2005, 2:10 AM CST for 4 states. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Feb 21, 2005, 2:10 AM CST (08:10 UTC)
- Expired
- Feb 21, 2005, 3:45 AM CST
- In force
- 95 min
- Issued by
- the Storm Prediction Center
All 80 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Crawford County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Poinsett County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Dunklin County, MO, Pemiscot County, MO, Alcorn County, MS, Benton County, MS, DeSoto County, MS, Marshall County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Little Rock radar (KLZK), 80 km from the middle of the area, began a volume at 08:13 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 00:00Z, 8.2 hours before the alert went out and 168 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
- 887 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 720 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.1
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 |
|---|---|---|---|---|
| Feb 20, 8:51 PM CST | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Cleburne, Conway, Crawford and 27 more | 114 min |
| Feb 20, 9:10 PM CST | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 29 more | 6 hr |
| Feb 20, 11:22 PM CST | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clay, Cleburne and 42 more | 113 min |
| Feb 21, 12:30 AM CST | Severe Thunderstorm Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Jackson and 8 more | 6 hr |
| Feb 21, 2:30 AM CST | Severe Thunderstorm Watch | SPC | Baxter, Boone, Cleburne, Conway, Fulton, Independence and 11 more | 4 hr |
| Feb 21, 4:29 AM CST | Mesoscale Discussion | SPC | Baxter, Boone, Clay, Cleburne, Conway, Craighead and 16 more | 2 hr |
| Feb 21, 5:45 AM CST | Severe Thunderstorm Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lee and 4 more | 3 hr |
| Feb 21, 7:50 AM CST | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lee and 4 more | 55 min |
| Feb 21, 3:58 PM CST | Mesoscale Discussion | SPC | Arkansas, Desha, Drew, Jefferson, Lincoln, Phillips | 92 min |
| Feb 21, 12:17 PM CST | Mesoscale Discussion | SPC | Alcorn, Itawamba, Prentiss, Tippah, Tishomingo | 118 min |
| Feb 21, 3:47 PM CST | Mesoscale Discussion | SPC | Calhoun, Chickasaw, Clay, Itawamba, Lafayette, Lee and 6 more | 118 min |
| Feb 21, 3:00 AM CST | Severe Thunderstorm Watch | SPC | Bedford, Bledsoe, Cannon, Cheatham, Clay, Coffee and 29 more | 6 hr |
| Feb 21, 5:13 AM CST | Mesoscale Discussion | SPC | Bedford, Bledsoe, Cannon, Cheatham, Clay, Coffee and 30 more | 2 hr |
| Feb 21, 8:40 AM CST | Severe Thunderstorm Watch | SPC | Anderson, Bedford, Bledsoe, Bradley, Cannon, Coffee and 38 more | 5 hr |
| Feb 21, 10:52 AM CST | Mesoscale Discussion | SPC | Blount, Bradley, Cocke, Grainger, Hamblen, Jefferson and 6 more | 113 min |
Nearby
Mesoscale Discussions in Arkansas, 2005Mesoscale Discussions in Tennessee, 2005Mesoscale Discussions in Mississippi, 2005Every mesoscale discussion in 2005
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.