|Mesoscale Discussion 355|
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Mesoscale Discussion 0355
NWS Storm Prediction Center Norman OK
0140 PM CDT Sun Apr 12 2020
Areas affected...Portions of central MS
Concerning...Tornado Watch 106...
Valid 121840Z - 122015Z
The severe weather threat for Tornado Watch 106 continues.
SUMMARY...Severe potential should be maximized across parts of
central MS this afternoon. This continues to include the possibility
of strong tornadoes.
DISCUSSION...A small cluster moving into central MS may be
transitioning to a supercell, with echo tops approaching 50,000 ft.
Yet another TDS has recently been observed with this convection in
Yazoo County, MS. The airmass downstream of this activity remains
quite favorable for organized, severe convection. The 18Z sounding
from JAN shows a very strong and veered wind profile in the low
levels in association with a 60-70+ kt low-level jet. The low-level
inversion observed around 850 mb is expected to continue eroding as
ascent associated with both the low-level jet and an approaching
mid-level trough overspread this region.
A meso-low has also been observed from 18Z surface analysis over far
southeastern AR and northwestern MS. Surface winds are locally
backed to east-southeasterly along a marine warm front extending
eastward from this low across parts of northern/central MS. A
relatively confined corridor of greater severe potential is apparent
this afternoon across parts of central MS, generally to the east of
the ongoing cluster/supercell and south of the northward-advancing
warm front. Across this area, a sufficiently unstable airmass
coupled with very strong low and mid-level shear will continue to
support the potential for tornadoes with any storms that can form/be
sustained. Some of these tornadoes could be strong given the ample
low-level shear. A threat for damaging winds and perhaps some large
hail also exists.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 32909063 33349014 33498949 33428848 32818848 32408855
32258931 31999098 32909063
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