Alert archive / Mississippi / Mesoscale Discussions in 2020
Mesoscale Discussion 843
The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2020, 1:18 PM CDT for 6 counties in Arkansas; 11 counties in Mississippi; 7 counties in Tennessee. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2020, 1:18 PM CDT (18:18 UTC)
- Expired
- Jun 5, 2020, 2:45 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 258
All 24 counties
Crittenden County, AR, Cross County, AR, Lee County, AR, Mississippi County, AR, Poinsett County, AR, St. Francis County, AR, Benton County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 19 km from the middle of the area, began a volume at 18:19 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
Jackson, MS (KJAN), launched 12:00Z, 6.3 hours before the alert went out and 319 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
- 960 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 813 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 5, 10:38 AM CDT | Mesoscale Discussion | SPC | Arkansas, Clark, Clay, Cleburne, Cleveland, Conway and 35 more | 2 hr |
| Jun 5, 11:03 AM CDT | Severe Thunderstorm Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lee and 4 more | 6 hr |
| Jun 5, 2:07 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Desha, Drew, Lincoln | 83 min |
| Jun 5, 2:49 PM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot | 6 hr |
| Jun 5, 5:02 PM CDT | Mesoscale Discussion | SPC | Chicot | 88 min |
| Jun 5, 9:53 AM CDT | Mesoscale Discussion | SPC | Tishomingo | 2 hr |
Nearby
Mesoscale Discussions in Mississippi, 2020Mesoscale Discussions in Tennessee, 2020Mesoscale Discussions in Arkansas, 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.