Mesoscale Discussion 0362
NWS Storm Prediction Center Norman OK
0454 PM CDT Sun Apr 12 2020
Areas affected...south-central Mississippi into southwest Alabama
Concerning...Tornado Watch 106...107...110...
Valid 122154Z - 122300Z
The severe weather threat for Tornado Watch 106, 107, 110 continues.
SUMMARY...Two tornadic supercells are likely to track northeast
across south-central and southeast Mississippi in the next couple of
hours. Significant, long-track tornadoes are likely.
DISCUSSION...A tornadic supercell currently moving over northwest
Jones County Mississippi has exhibited extremely strong rotation
with rotational velocity values around 100 knots on multiple scans.
Additionally, multiple scans of TDS have been observed over the last
hour. Given the very favorable storm/tornado environment,
characterized by STP of 7+, MLCAPE of 2000+ J/kg, and 0-1 km SRH of
400+ m2/s2, this tornadic supercell is likely to continue tracking
northeastward for at least the next hour and likely longer.
Back to the southwest, another tornadic supercell is moving over
southern Jefferson Davis County that has exhibited strong rotation
with rotational velocity values of 60+ knots. This is following a
very similar track to the previous tornadic supercell with the
potential for communities to be affected twice in a relatively short
amount of time. With no other convection degrading the warm sector
south and downstream of these storms, they are likely to continue
across Mississippi and into west/southwest Alabama.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 31488844 31238989 31359013 31509010 31998937 32358872
32528816 31958791 31488844