Okay, another random thought:

could it have something to do with an order of progression: antedilluvian ----> dilluvian ----> postdilluvian ---> blovian?

i can't imagine how the wind component to blovian would compare to the flood component to dilluvian, though. (Well, unless it's a WINDows thing... but that'd r-e-a-l-l-y be a stretch.)