The Ohio Valley severe weather risk will be the result of a convective system currently moving east across Illinois. As the system gets into the Ohio Valley, instability of up to 2000 j/kg will be available, making for a situation that could sustain some mainly hail-producing severe storms.
The South Plains severe weather risk is positioned in a way that tells me it may be a linear formation. A system will eject eastward and bump against a dry line in central Texas. This will initiate some strong severe storms that will have a mainly hail-producing risk.
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