[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 110852
SWOMCD
SPC MCD 110851
TNZ000-111015-

Mesoscale Discussion 2015
NWS Storm Prediction Center Norman OK
0251 AM CST Sat Dec 11 2021

Areas affected...portions of Middle Tennessee

Concerning...Tornado Watch 558...

Valid 110851Z - 111015Z

The severe weather threat for Tornado Watch 558 continues.

SUMMARY...A locally higher threat for damaging gusts and tornadoes
exists with a supercell structure embedded within the line as it
approaches the Nashville metropolitan area.

DISCUSSION...A relatively dominant supercell structure embedded
within a north-south oriented segment of the squall line has
exhibited strong low-level rotation, with TDSs noted around 0830Z
and 0845Z. This storm is progressing in an environment characterized
by strong low-level shear, with the 0828Z OHX VWP showing a long,
curved hodograph and over 350 m2/s2 0-1 km SRH. Given low to mid 60s
F dewpoints residing ahead of the storm, the potential for severe
wind gusts and tornadoes is expected to continue over the next hour
or so, when the storm is expected to traverse the Nashville
Metropolitan area.

..Squitieri/Edwards.. 12/11/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...OHX...

LAT...LON   36108732 36428698 36468636 36248603 35938607 35798632
            35798681 35838714 35928741 36108732
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