Alert archive / Mississippi / Mesoscale Discussions in 2020
Mesoscale Discussion 141
The Storm Prediction Center issued this mesoscale discussion at Mar 3, 2020, 2:52 AM CST for 8 counties in Alabama; 35 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 3, 2020, 2:52 AM CST (08:52 UTC)
- Expired
- Mar 3, 2020, 5:15 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 43 counties
Colbert County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Lamar County, AL, Marion County, AL, Pickens County, AL, Sumter County, AL, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Rankin County, MS, Scott County, MS, Tallahatchie County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS
The radar
The Columbus AFB radar (KGWX), 103 km from the middle of the area, began a volume at 08:55 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, 8.9 hours before the alert went out and 190 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
- 634 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 261 m²/s²
- 0-3 km storm-relative helicity
- 361 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 5.9
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 |
|---|---|---|---|---|
| Mar 3, 2:34 AM CST | Mesoscale Discussion | SPC | Lauderdale | 116 min |
| Mar 3, 5:12 AM CST | Tornado Watch | SPC | Autauga, Bibb, Bullock, Chambers, Chilton, Clay and 15 more | 5 hr |
| Mar 3, 7:25 AM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Bullock, Chambers, Chilton, Clay and 8 more | 2 hr |
| Mar 3, 9:16 AM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Russell | 89 min |
| Mar 3, 12:52 PM CST | Mesoscale Discussion | SPC | Autauga, Barbour, Bullock, Chambers, Chilton, Dallas and 12 more | 2 hr |
| Mar 2, 11:10 PM CST | Mesoscale Discussion | SPC | DeSoto | 2 hr |
| Mar 3, 12:59 AM CST | Severe Thunderstorm Watch | SPC | Alcorn, Benton, DeSoto, Marshall, Tate, Tippah and 1 more | 4 hr |
Nearby
Mesoscale Discussions in Mississippi, 2020Mesoscale Discussions in Alabama, 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.