Alert archive / Tennessee / Mesoscale Discussions in 2023
Mesoscale Discussion 977
The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2023, 4:43 PM CDT for 6 counties in Arkansas; 14 counties in Mississippi; 32 counties in Tennessee. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2023, 4:43 PM CDT (21:43 UTC)
- Expired
- Jun 11, 2023, 6:15 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 265...266
All 52 counties
Arkansas County, AR, Crittenden County, AR, Lee County, AR, Monroe County, AR, Phillips County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Prentiss County, MS, Quitman County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Bedford County, TN, Cannon County, TN, Cheatham County, TN, Chester County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Fayette County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Hickman County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Perry County, TN, Rutherford County, TN, Shelby County, TN, Smith County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Wayne County, TN, Williamson County, TN, Wilson County, TN
The radar
The Memphis radar (KNQA), 126 km from the middle of the area, began a volume at 21:45 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.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 9.7 hours before the alert went out and 189 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
- 77 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1030 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 1:56 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 2 more | 3 hr |
| Jun 11, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Boone, Clay, Cleburne, Craighead and 28 more | 7 hr |
| Jun 11, 5:17 PM CDT | Mesoscale Discussion | SPC | Desha | 58 min |
| Jun 11, 5:57 PM CDT | Severe Thunderstorm Watch | SPC | Attala, Bolivar, Carroll, Choctaw, Clay, Grenada and 9 more | 4 hr |
| Jun 11, 2:26 PM CDT | Severe Thunderstorm Watch | SPC | Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more | 7 hr |
| Jun 11, 3:34 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bledsoe, Blount, Campbell, Claiborne, Grainger and 11 more | 6 hr |
| Jun 11, 5:48 PM CDT | Mesoscale Discussion | SPC | Anderson, Campbell, Cumberland, Fentress, Morgan, Overton and 3 more | 57 min |
| Jun 11, 6:22 PM CDT | Mesoscale Discussion | SPC | Bradley, Franklin, Giles, Hamilton, Lincoln, Marion and 2 more | 23 min |
| Jun 11, 6:46 PM CDT | Severe Thunderstorm Watch | SPC | Bradley, Franklin, Hamilton, Lincoln, Marion, Moore and 2 more | 7 hr |
Nearby
Mesoscale Discussions in Tennessee, 2023Mesoscale Discussions in Mississippi, 2023Mesoscale Discussions in Arkansas, 2023Every mesoscale discussion in 2023
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.