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Mesoscale Discussion 0732
NWS Storm Prediction Center Norman OK
1126 PM CDT Tue May 21 2019

Areas affected...southeastern Illinois

Concerning...Tornado Watch 210...

Valid 220426Z - 220600Z

The severe weather threat for Tornado Watch 210 continues.

SUMMARY...An isolated threat for tornadoes and damaging wind gusts
continues across remaining portions of WW 210.

DISCUSSION...Recent convective trends suggest that nocturnal
boundary layer stabilization may be contributing to a general trend
for more slightly elevated convection across WW 210.  The
pre-convective airmass remains strongly sheared and weakly unstable
(slightly more unstable with southward extent) however, and with
storms organizing along linear bands at the leading edge of outflow,
a damaging wind threat will continue for the next hour or so at
least.  A brief tornado can also not be ruled out.  These storms are
reaching the eastern extent of WW 210, and downstream watch
extensions may be considered for this activity.

..Cook.. 05/22/2019

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


LAT...LON   39258831 39418786 39298759 38768757 37588808 37088850
            37098878 37378891 38068872 38608852 39258831 

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