|Mesoscale Discussion 360|
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Mesoscale Discussion 0360
NWS Storm Prediction Center Norman OK
0426 PM CDT Sun Apr 12 2020
Areas affected...south-central and southeast Mississippi
Concerning...Tornado Watch 106...107...
Valid 122126Z - 122200Z
The severe weather threat for Tornado Watch 106, 107 continues.
SUMMARY...Based on recent radar and environmental data, a violent
tornado with potential peak winds of 170 to 205 mph (EF4-EF5) is
likely ongoing. THIS IS AN EXCEPTIONALLY RARE EVENT.
DISCUSSION...An intense supercell will continue to move through a
favorable environment over south-central Mississippi, characterized
by 0-1 km SRH around 400 m2/s2 and MLCAPE near 2000 J/kg per latest
mesoanalysis data. Recent radar signatures from KLIX as of 2112Z
reveal an intense supercell characterized by a 0.4 degree rotational
velocity of at least 70 kt. A tornadic debris signature has also
been noted on recent radar scans. These signatures are occurring in
an environment characterized by STP greater than 7. Previous
signatures within similar environments produced
tornado-damage-estimated wind speeds from 170 to 205 mph and
confidence is high for a likely violent tornado. A long-track
tornado is expected to continue based on the rotational velocity
duration and the storm moving within a favorable downstream
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 31508879 31398935 31488969 31638977 31858965 32128931
32168901 32098881 31938869 31788862 31508879
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