Who the hell moves to West Virginia??
People who left West Virginia to get some work and all that and who have come back?* Maybe not many now but hopefully in a few years... You also have the Eastern Panhandle.
As for the house prices thing... a lot of the new people in a lot of states will be living in new housing. More housing usually lowers the prices.
As for the metro areas, I suspect we're seeing a mix of speculation/investing, more subletting (and private renting in general?), lack of new housing (?) and so on...
*A trend we're starting to see over here in some of our old industrial areas.