ZCZC SPCSWOMCD ALL
ACUS11 KWNS 130445 
SPC MCD 130445 
KYZ000-INZ000-ILZ000-130645-

Mesoscale Discussion 1720
NWS Storm Prediction Center Norman OK
1145 PM CDT Mon Aug 12 2019

Areas affected...soutehast Illinois...southern Indiana...and into
portions of western and central Kentucky

Concerning...Tornado Watch 575...

Valid 130445Z - 130645Z

The severe weather threat for Tornado Watch 575 continues.

SUMMARY...Severe risk continues to evolve primarily toward damaging
winds across WW 575.

DISCUSSION...Latest radar loop shows storms evolving into a fairly
well-defined bow echo, moving southeastward at around 25 kt.  Some
acceleration of the band of convection is noted over the past half
hour, near the Illinois/Indiana border.

A tight instability gradient is aligned north-south across middle
Tennessee and west-central Kentucky, which should limit the
longer-term eastward advance of the convection.  Meanwhile however,
risk for damaging winds will continue across WW 575, and may spread
southeast of the watch over the next couple of hours.  We will
continue to monitor evolution of the convection, and any possible
need for a downstream WW.

..Goss.. 08/13/2019

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

ATTN...WFO...ILN...LMK...IND...PAH...ILX...LSX...

LAT...LON   38868893 39208868 39258805 39628710 39548628 38558503
            37718495 37318561 37428698 38018799 38868893 

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