[BNAWX] Severe Storm Outlook Narrative

EMWIN Server emwin at nashvilleweather.net
Sat Feb 23 19:52:10 CST 2019


ACUS11 KWNS 240151
SWOMCD
SPC MCD 240151
ALZ000-TNZ000-MSZ000-240345-

Mesoscale Discussion 0130
NWS Storm Prediction Center Norman OK
0751 PM CST Sat Feb 23 2019

Areas affected...southeast MS into northern AL and south-central TN

Concerning...Tornado Watch 5...6...

Valid 240151Z - 240345Z

The severe weather threat for Tornado Watch 5, 6 continues.

SUMMARY...An isolated severe threat will continue from central MS
into central/northern AL and far south-central TN the next few
hours.

DISCUSSION...The severe threat has largely diminished across the
region given cooling boundary layer temperatures and working over of
the airmass by widespread precipitation associated with weakening
line/storm clusters. Occasional moderate rotation has been noted,
most recently in a cell in Walker County AL over the last 30 minutes
or so. Deep layer shear remains favorable for rotating updrafts, but
any organized, intense cell will likely be short-lived as forcing
for ascent continues to weaken with eastward extent. In the short
term, a low-end severe/tornado threat will continue for another
couple of hours across Tornado Watch 6.

Further west, storms have intensified ahead of the approaching cold
front across central MS. These storms could pose a damaging wind
threat given some weak surface based instability and fast storm
motion. This threat should remain limited in time and space however
as line of storms tracks across an increasingly stabilizing boundary
layer through the evening. As such, a new watch is not expected
across this area and the remainder of Tornado Watch 5 will be
allowed to expire as scheduled at 02z.

..Leitman.. 02/24/2019

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

ATTN...WFO...OHX...BMX...HUN...MOB...MEG...JAN...

LAT...LON   31579036 31899042 32429011 33508928 34108868 35348739
            35508705 35538670 35458637 35168613 34668613 33628630
            33168652 32788684 32138766 31938800 31528891 31408967
            31408994 31459021 31579036
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