Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 270854
SWOMCD
SPC MCD 270854
TNZ000-KYZ000-ILZ000-MOZ000-ARZ000-271100-

Mesoscale Discussion 0858
NWS Storm Prediction Center Norman OK
0354 AM CDT Sat May 27 2017

Areas affected...parts of southern Missouri and northern Arkansas
and into western parts of Kentucky and Tennessee

Concerning...Severe Thunderstorm Watch 272...

Valid 270854Z - 271100Z

The severe weather threat for Severe Thunderstorm Watch 272
continues.

SUMMARY...Storms continue to gradually increase/organize into a
small MCS over the AR/MO border region, with ongoing/local severe
risk.  New/downstream WW appears likely to be necessary.

DISCUSSION...Latest radar loop shows a cluster of storms that
appears to be evolving into a small MCS over Howell County MO and
adjacent Fulton and Izard Counties in Ar, and trailing west to
Marion County AR.

With an amply unstable airmass extending east to/across the
mid-Mississippi Valley, and given the convection`s co-location with
a weak/mobile center of cyclonic circulation evident in water vapor
imagery, expect that storms -- and likely a local severe risk --
will continue east of the existing watch.  As such, new WW appears
likely.

..Goss.. 05/27/2017

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

ATTN...WFO...PAH...MEG...LSX...LZK...SGF...TSA...

LAT...LON   35899236 35969283 36149322 36369332 36569305 36769251
            37259148 37379002 37278931 36728897 35728932 35509023
            35899236




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