Curious to see how well that verifies. We all know there is a tendency this time of year for those cold shots to be overstated and this one may fit that mold. However, that isn't a good enough reason to justify this case but when looking at this you can see why it probably is overstated.
First off, these are some intense cyclones undergoing rapid cyclogenesis crossing the Plains so they are drawing down some chilly temperatures on the backside. Hell, there could be a decent swath of heavy snow on the backside of this from South Dakota through southern Minnesota and even within the Ohio Valley they could get snow showers Wednesday night.
Anyways, for us, these systems are also occluding extremely quickly and tracking well to our northwest...its difficult seeing any anomalously cold llvl airmasses truly advect into our area.
But maybe the BN temps are more related to some local influences with onshore flow from the cuttoff in the ATL?