[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 202326
SWOMCD
SPC MCD 202326
KYZ000-INZ000-TNZ000-ALZ000-MSZ000-MOZ000-ARZ000-210030-

Mesoscale Discussion 0479
NWS Storm Prediction Center Norman OK
0626 PM CDT Sun May 20 2018

Areas affected...Western Kentucky...western Tennessee...eastern
Arkansas...and northern Mississippi

Concerning...Severe Thunderstorm Watch 110...

Valid 202326Z - 210030Z

The severe weather threat for Severe Thunderstorm Watch 110
continues.

SUMMARY...An isolated damaging wind threat continues across
remaining portions of WW 110, although much of the region has
stabilized recently due to convective overturning.  Portions of WW
110 may be cancelled before the 01Z expiration time.

DISCUSSION...Storms continue to propagate slowly/erratically in and
near the remaining valid portions of WW 110 currently.  These storms
are in a weakly sheared environment, with widespread convective
overturning and expanding rain-cooled air/outflow limiting the
magnitude of surface-based instability needed to maintain a robust
severe threat.  Storms propagating through the warm, moderately
unstable pre-convective airmass (in eastern Arkansas and near Middle
Tennessee) may continue to pose a threat for isolated damaging wind
gusts in the short term, although ongoing trends suggest that the
overall severe threat will continue to wane through 01Z.  Some
portions of WW 110 may be cancelled early as a result.

..Cook.. 05/20/2018

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

ATTN...WFO...OHX...HUN...PAH...MEG...JAN...LZK...

LAT...LON   36129127 36169085 36289008 36498937 36948847 37438791
            37858766 37918731 37748715 37058733 36088769 35388799
            34438825 33998832 33738853 33698929 33809036 33999111
            34119139 34579138 35409127 36129127
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