Isolated strong to severe thunderstorms will be possible Wednesday across portions of the Ohio Valley. Locally damaging winds look to be the main threat though a tornado or two can't be completely ruled out. A surface and upper low will be in close proximity of the Ohio Valley.  Cool mid-level temperatures associated with the upper low combined with modest afternoon heating ahead of the cold front may support some weak surface-based instability by early Wednesday afternoon. A broken line of storms may develop in this environment. Given the conditions isolated damaging winds should be the main threat if enough destabilization occurs.

 

 

 

A category 1 Marginal Risk Area for portions of Kentucky west of I-75 exists for today. Isolated strong to severe storms will be possible. Locally damaging winds should be the main threat but a tornado or two could occur. Conditions suggest that isolated thunderstorms will likely develop ahead  of the upper low by noon-1 pm EST in southern Illinois/Indiana. This activity should spread east during the afternoon, possibly developing in an arcing fashion across western Kentucky. Locally damaging winds are the primary risk, but some tornado threat does appear possible. At this time the Storm Prediction Center is maintaining the cat. Marginal Risk due to low confidence in storm coverage, however this region will be monitored for higher severe possibilities if confidence in organized severe increases.