Isolated severe storms will be possible today from parts of the mid-Mississippi Valley northeastward into the Ohio Valley and Lower  Great Lakes.
 

Today, as a pre-frontal trough oriented from northeast to southwest moves eastward through the Ohio Valley, a shortwave trough will travel northeastward into the western Great Lakes. From the middle Mississippi Valley northeastward to the lower Great Lakes, a short corridor of instability will form close to the pre-frontal trough. Isolated to dispersed thunderstorms are predicted to start when the front's surface temperatures rise during the day. During the afternoon, it is anticipated that many thunderstorm clusters will form and proceed eastward across the Ohio Valley. The environment will be favorable for the possibility of organized severe storms. Storms may have a propensity to organize into brief line segments despite the possibility of supercells because of flow that is parallel to the convective axis. Wind-related damage will be the primary threat, although hail and a marginal tornado threat will be possible in the lower Great Lakes, where deep-layer shear is forecast to be the strongest. The severe threat could persist into the early evening,
   as cells move into the central Appalachians.

 

 

 

 

I just received the following from the NWS-Louisville office.

Quote

 

Good morning,

Strong to severe storms are expected to develop this afternoon and last through the evening hours. Main threats with these storms are damaging winds, hail, and localized flooding with heavy downpours.

Attached is a briefing slide with more information.

Please let us know if you have any questions.

Thank you,
NWS Louisville