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Mesoscale Discussion 0323
NWS Storm Prediction Center Norman OK
0236 AM CDT Thu Apr 09 2020
Areas affected...Portions of the eastern WV
Panhandle...western/central VA...and far northwestern NC
Concerning...Severe Thunderstorm Watch 95...
Valid 090736Z - 090900Z
The severe weather threat for Severe Thunderstorm Watch 95
continues.
SUMMARY...Damaging wind gusts will remain possible with a line of
storms moving eastward.
DISCUSSION...The reflectivity structure to a well organized bow that
is moving across the Appalachians has recently weakened as it
encounters a less unstable airmass across western VA. Still, strong
west-southwesterly flow (around 40-50 kt at 1 km AGL) is being
estimated by recent VWPs from KFCX. Damaging wind gusts should
remain the primary threat with the now broken line of storms given
the potential for convective downdrafts to penetrate the
near-surface stable layer. This damaging wind potential may be
better realized across the southern portions of the line in
southwestern VA and vicinity where some destabilization just off the
surface is occurring (MUCAPE up to 500-1000 J/kg). Depending on
radar trends, some eastward expansion of Severe Thunderstorm Watch
95 into parts of northern/central VA is possible.
..Gleason.. 04/09/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LWX...RNK...MRX...
LAT...LON 39197910 39117792 38457778 38177786 38177819 36348007
36198151 36328170 36968153 37478052 37957982 39197910
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