Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 241951
SWOMCD
SPC MCD 241950
TNZ000-KYZ000-VAZ000-NCZ000-242045-

Mesoscale Discussion 0833
NWS Storm Prediction Center Norman OK
0250 PM CDT Wed May 24 2017

Areas affected...Central/eastern Kentucky and eastern Tennessee

Concerning...Tornado Watch 264...

Valid 241950Z - 242045Z

The severe weather threat for Tornado Watch 264 continues.

SUMMARY...At least an isolated severe threat continues across WW
264.

DISCUSSION...Scattered thunderstorms are ongoing across northwestern
portions of WW 264, with one dominant linear segment over Pulaski
County, Kentucky.  More non-lightning-producing convection was
located south of this activity into eastern Tennessee.  More recent
convection has struggled to maintain intensity over the past hour or
so, with convection over south-central Kentucky likely inhibited by
downstream overturning, which has limited instability.  Farther east
into southeastern Kentucky, the boundary layer remains cooled from
previous rainfall that has now moved to the east of the discussion
area.  Despite these negating factors for convective intensity,
shear profiles, areas of insolation, and warm advection (especially
over eastern Tennessee) will likely result in a continued isolated
threat for hail, damaging winds, and a tornado or two over the next
few hours - especially with storms that organize into linear
segments and/or exhibit rotation.

Farther southwest, low-level flow has veered to westerly and surface
temperatures have cooled, limiting the tornado threat in areas
near/east of Nashville and west of CSV (Cumberland, Tennessee).
These portions of WW 264 may be cancelled before the originally
scheduled expiration time (00Z).

..Cook/Kerr.. 05/24/2017

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

ATTN...WFO...RLX...GSP...MRX...JKL...ILN...LMK...OHX...

LAT...LON   38068526 38418481 38598395 38418325 37638254 37048245
            36488260 36148270 35798318 35458354 35188381 35038414
            35078431 35308456 35898473 36498485 36758532 36868575
            37068589 37568579 37878549 38228501 38068526




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