[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 122214
SWOMCD
SPC MCD 122214
GAZ000-ALZ000-TNZ000-122345-

Mesoscale Discussion 0363
NWS Storm Prediction Center Norman OK
0514 PM CDT Sun Apr 12 2020

Areas affected...northern Alabama

Concerning...Tornado Watch 109...

Valid 122214Z - 122345Z

The severe weather threat for Tornado Watch 109 continues.

SUMMARY...Potential for strong/damaging winds remains evident across
northern Alabama, along with risk for tornadoes.  Potential will
continue as storms shift quickly east-northeastward.

DISCUSSION...Latest radar loop shows widespread thunderstorms
crossing the northern third of Alabama -- within Tornado Watch 109.
The strongest storms are within a bowing cluster exhibiting a
persistent mesolow/comma-head circulation, which is now crossing
Walker County.  Along with risk for damaging winds, tornadoes remain
possible with this cluster of fast-moving storms, as several
smaller-scale circulations remain evident within the cluster.  The
strongest of these circulations -- now over southern Walker County
-- is currently associated with a TDS/CC min suggestive of a tornado
in progress.

The severe/tornado potential is being supported by intense/veering
flow through the lower and mid troposphere, with this wind field
widespread across the Mid South/Tennessee Valley area.  However,
instability diminishes with northward extent across Tennessee.  As
such, storms over northern portions of the watch in the vicinity of
the Tennessee/Alabama border counties remain weaker at this time.
While some risk remains across this part of the area, expect
greatest severe/tornado risk to remain over southern portions of the
WW over the next hour or so.

..Goss.. 04/12/2020

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

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

LAT...LON   33208797 33798803 35068709 35028565 33688527 33238684
            33208797
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