Agreed. Those of us that have been doing this for some time, know that 6" was always top bar for true CTP w/ a storm evolution/pattern like this. 3" for MBY has been my guess, and for much of CTP, but Trainers 2/-4 is better as gradient will be likely due to changeover and cold holding in respective spots. If anyone thought hi end possible w/ an 850 LP passing well to our NW and HP on the move....well I'm not sure what to say. It CAN happen, but as soon as we lost the anchored HP look, us realists were hoping to hang onto the cold as long as possible. CAD can over preform here.
That's where weather maps become guidance and knowing your climo takes over.