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ACUS11 KWNS 300128
SWOMCD
SPC MCD 300127=20
TNZ000-GAZ000-ALZ000-MSZ000-300330-

Mesoscale Discussion 2080
NWS Storm Prediction Center Norman OK
0727 PM CST Wed Dec 29 2021

Areas affected...central and northern Alabama into northwest Georgia

Concerning...Tornado Watch 570...

Valid 300127Z - 300330Z

The severe weather threat for Tornado Watch 570 continues.

SUMMARY...Isolated tornado or damaging wind threat remains across
the region. Convective trends are being closely monitored across
central Alabama.

DISCUSSION...A line of storms continues to push east across TN into
northern AL and east-central MS, primarily displaying a solid gust
front but with periodic surges of wind and rotation in QLCS fashion.
A lone supercell was noted near the MS/AL border southwest of TCL,
and this storm will cross into AL shortly.

The environment ahead of the squall line continues to favor a rapid
eastward motion given strong west/southwest flow aloft. Instability
becomes quite marginal to support severe toward the TN area, but a
bit of warm advection may yet support isolated reports into northern
GA and southeast TN.

Some moistening may aid minor destabilization across central AL this
evening given the veered nature of the 850 mb winds, and modest
effective SRH conditionally favors a supercell threat. As such, the
area from central AL into western GA will need to be monitored for
potential watch extension or new issuance.

..Jewell.. 12/30/2021

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!rQaHnVnlAP8230CNAuyPbp74LVxzyoRIGM3BfG46PXr5A8eS7_DMb3YmJg15w4KZxZ_40akB$=
for graphic product...

ATTN...WFO...MRX...FFC...OHX...BMX...HUN...JAN...

LAT...LON 32768764 32788845 32858863 33058856 33608828 33908751
34548648 35078598 35548542 35608519 35538462 35168433
34648446 33728532 33168590 32838674 32768764=20



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