ZCZC SPCSWOMCD ALL
ACUS11 KWNS 080220 
SPC MCD 080220 
OHZ000-KYZ000-INZ000-ILZ000-080315-

Mesoscale Discussion 0687
NWS Storm Prediction Center Norman OK
0920 PM CDT Tue May 07 2024

Areas affected...Ohio Valley

Concerning...Tornado Watch 196...197...198...199...

Valid 080220Z - 080315Z

The severe weather threat for Tornado Watch 196, 197, 198, 199
continues.

SUMMARY...Scattered severe thunderstorms will sag southeast across
the OH Valley this evening.

DISCUSSION...Scattered severe thunderstorms, including isolated
supercells and short-line segments, arc from central OH-southern
IN-extreme southeast IL. This activity is propagating slowly
southeast along the northern fringe of greater buoyancy. As the LLJ
increases across the upper OH Valley later this evening, a more
eastward shift is expected toward the PA border, though air mass is
notably less unstable immediately downstream within this
warm-advection corridor. Several long-lived supercells persist, and
given the shear, will likely continue, especially from southern IN
into southern OH.

..Darrow.. 05/08/2024

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

ATTN...WFO...PBZ...RLX...CLE...ILN...LMK...IND...PAH...ILX...

LAT...LON   39178776 39608452 40338359 41118291 40808179 39158277
            38598486 38408815 39178776 

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