Alert archive / Mississippi / Mesoscale Discussions in 2020
Mesoscale Discussion 883
The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2020, 5:28 PM CDT for 8 counties in Alabama; 19 counties in Mississippi; Fayette County, Shelby County, Tennessee. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 2020, 5:28 PM CDT (22:28 UTC)
- Expired
- Jun 8, 2020, 7:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 29 counties
Colbert County, AL, Cullman County, AL, Franklin County, AL, Jefferson County, AL, Lawrence County, AL, Marion County, AL, Walker County, AL, Winston County, AL, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Oktibbeha County, MS, Pontotoc County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Yalobusha County, MS, Fayette County, TN, Shelby County, TN
The radar
The Columbus AFB radar (KGWX), 32 km from the middle of the area, began a volume at 22:30 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
Birmingham, AL (KBMX), launched 12:00Z, 10.5 hours before the alert went out and 188 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
- 74 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 647 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 7, 7:52 PM CDT | Mesoscale Discussion | SPC | Baldwin, Mobile | 113 min |
| Jun 8, 1:09 PM CDT | Mesoscale Discussion | SPC | Benton, Calhoun, Chickasaw, Choctaw, Clay, DeSoto and 24 more | 3 hr |
Nearby
Mesoscale Discussions in Mississippi, 2020Mesoscale Discussions in Alabama, 2020Mesoscale Discussions in Tennessee, 2020Every mesoscale discussion in 2020
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.