ZCZC SPCSWOMCD ALL
ACUS11 KWNS 230850 
SPC MCD 230850 
OHZ000-MIZ000-INZ000-ILZ000-230945-

Mesoscale Discussion 0747
NWS Storm Prediction Center Norman OK
0350 AM CDT Thu May 23 2019

Areas affected...east-central IL into northern and central IN and
far southern MI/northwest OH

Concerning...Severe Thunderstorm Watch 216...

Valid 230850Z - 230945Z

The severe weather threat for Severe Thunderstorm Watch 216
continues.

SUMMARY...Strong to isolated severe wind gusts will be possible
another couple of hours across WW 216. Severe threat will diminish
with time and with north and eastward extent into the early morning
hours.

DISCUSSION...Strong to severe wind gusts continue with the squall
line from near the IN/MI border south/southwest into central IN and
adjacent portions of east-central IL. Most recently, peak gusts of
around 35-45 kt have been measured at several sites Mattoon and
Champaign-Urbana IL to Valparaiso, Lafayette and South Bend IN.
Strong to locally severe gusts will be possible for another couple
of hours as the line shifts eastward across the remainder of
northern and central IN. A few strong gusts can not be ruled out
across for southern MI into far northwest OH, but severe potential
is low across this area as instability diminishes and inhibition
increases. Nevertheless, VWP from ILN and GRR continue to indicate
strong vertical shear. This should help to maintain semi-organized
line with eastward extent, but unfavorable thermodynamics and a
stable boundary layer will limit severe potential into Lower MI and
western OH. A downstream watch is not anticipated at this time.

..Leitman.. 05/23/2019

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

ATTN...WFO...ILN...IWX...GRR...IND...ILX...

LAT...LON   39178654 39088781 39258807 39598805 39748782 40028715
            40788649 42058613 42158574 42128490 41818442 41448439
            40688464 40088485 39618529 39288592 39178654 

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