Mainly high-level cirrus clouds are still threatening central Missouri through eastern Kentucky. The expected overnight thunderstorm complex over Iowa is creating a large area of thick cirrus that is inching uncomfortably close to the St. Louis area and southern Illinois portions of the eclipse path. Winds at that height are generally westerly, which should help keep those north of the eclipse path - but it is still worth watching.
More concerning is some pesky midlevel clouds in southern Missouri and cirrus from a decaying thunderstorm complex in Kansas that are both aligned via upper-level winds to head straight for the eclipse path from St. Louis to Paducah.
Short-term high-resolution models suggest thunderstorms developing in southern Illinois just after the eclipse, which means a congested cumulus field may be in progress at totality time. This is probably my biggest concern at the moment, and has me leaning toward heading for the Kentucky part of the path.
Skies across the eclipse path generally look good here now, but in 6-7 hours, a LOT can change - especially with so much cloud material so close. It will be a nail biter for sure.