Lol's. Back when I participated more frequently in the MA forum, they called it "atmospheric memory" or something along those lines. Thats partly my take on the constant N jog we see.
OTOH we've been seeing cutters belly under and yeah, that's been my hope as the cold air should be stable enough (not transient), thats my hope wrt next weeks pair of events, that they can belly under and not attack the cold dome. I'll be watching the progression in hopes that suspicions verify.