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ACUS11 KWNS 041442
SWOMCD
SPC MCD 041441
NCZ000-TNZ000-GAZ000-ALZ000-041615-
Mesoscale Discussion 0527
NWS Storm Prediction Center Norman OK
0941 AM CDT Sat May 04 2019
Areas affected...parts of eastern Tennessee...northern Georgia...and
western North Carolina
Concerning...Severe potential...Watch unlikely
Valid 041441Z - 041615Z
Probability of Watch Issuance...20 percent
SUMMARY...Limited severe risk -- mainly in the form of gusty/locally
damaging winds -- exists over portions of the southern Appalachians,
though WW is not anticipated in the short term.
DISCUSSION...Latest radar loop shows a weak remnant convective
circulation moving northeast across middle Tennessee, with a leading
band of organized storms near the Tennessee/Georgia border. The
storms are moving through an environment characterized by rather
weak lapse rates aloft/modest instability (at or below 500 J/kg
mixed-layer CAPE), and moderate deep-layer flow (low- to mid-level
flow 20 to 30 kt from the west-southwest).
Given limitations of both the kinematic and thermodynamic
environment, severe risk should remain limited. However, given the
linearly organized/weakly bowing nature of the convective band, and
enhanced forward motion (east-northeast at around 30 kt), gusty
winds, and some sporadic tree/limb damage appears possible.
While WW is not anticipated in the short term, downstream/diurnal destabilization over the next several hours may support an increase
in storm intensity, and corresponding potential need for WW
issuance.
..Goss/Guyer.. 05/04/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GSP...MRX...FFC...OHX...BMX...
LAT...LON 34708531 35598563 36138350 36138260 35838251 35118300
34378374 33828477 33588538 34708531
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