Alert archive / Mississippi / Mesoscale Discussions in 2020
Mesoscale Discussion 166
The Storm Prediction Center issued this mesoscale discussion at Mar 11, 2020, 2:29 PM CDT for 12 counties in Alabama; 22 counties in Mississippi. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Mar 11, 2020, 2:29 PM CDT (19:29 UTC)
- Expired
- Mar 11, 2020, 4:00 PM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 34 counties
Bibb County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Lamar County, AL, Marion County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Attala County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Itawamba County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Lowndes County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pontotoc County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS
The radar
The Columbus AFB radar (KGWX), 94 km from the middle of the area, began a volume at 19:29 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, 7.5 hours before the alert went out and 167 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
- 112 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 11, 12:26 PM CDT | Severe Thunderstorm Watch | SPC | Bibb, Fayette, Greene, Hale, Lamar, Marengo and 7 more | 5 hr |
| Mar 11, 5:20 PM CDT | Mesoscale Discussion | SPC | Dallas, Hale, Lowndes, Perry | 55 min |
| Mar 11, 9:54 AM CDT | Mesoscale Discussion | SPC | Bolivar, Coahoma, DeSoto, Grenada, Lafayette, Leflore and 8 more | 2 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.