Heavy rain is on its way to the Ohio Valley. A stationary surface boundary along with left over moisture being funneled from tropical cyclone Simon will allow for a moisture rich axis to setup right over the region. We will see numerous rain events move through the region over the next week, dropping as much as 5 inches of rain in areas. Flooding will become a concern for areas, especially those that have picked up an inch or two of rain over the past several days. Through Sunday, as much as 3 inches of rain is possible across south central Kentucky.
By Next Wednesday, parts of the region may have picked up over 5 inches of rain. The heaviest rain axis will be through southern Missouri and western Kentucky.
Here is the NAM and GFS model guidance for the heavy rain event.