Mesoscale Discussion 0216
NWS Storm Prediction Center Norman OK
0222 AM CDT Fri Mar 20 2020
Areas affected...portions of western TN...western and central
KY...southern IN and southwest OH
Concerning...Tornado Watch 59...
Valid 200722Z - 200845Z
The severe weather threat for Tornado Watch 59 continues.
SUMMARY...Convection may sporadically intensify through the early
morning hours. Strong, locally damaging gusts will be the main
concern, though a tornado cannot be ruled out in the short-term.
DISCUSSION...Thunderstorm clusters across western TN, western KY and
southern IN have periodically shown increases in intensity with some
supercell and bowing segment characteristics evident in radar data
over the past couple of hours. However, intensity has not been
sustained for long periods of time. The overall environment
continues to display intense shear with enlarged low level
hodographs per regional VWP data. Instability remains weak, with
generally 500 J/kg apparent via 07z mesoanalysis. Surface inhibition
is likely playing some deleterious role in sustaining more intense
convection. As a result, a low-end severe threat will likely
continue through the night/early morning hours across portions of
southern IN, western/central KY into western and middle TN, but will
be too sporadic to warrant a new downstream watch, though in the
short-term, local extension of WW 59 are possible.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 36308939 38788681 39818519 40068433 39918366 39558358
38828397 37588523 37258559 36338664 35998717 35198851
35228916 35368953 35718967 36308939