I would think 30 cm is more likely on ground by Friday, especially factoring in sublimation and compaction between events. 60 cm would be heavenly but I would be surprised.
My guess is 20 cm of snow from today's event, 10 cm on Friday. Maybe I'm pessimistic, but we've been screwed by overblown Kuchera rates before (even if we're in prime dendrite growth zone thermally, seen far too many rod events when I was hoping for dendrites). And the Thursday night system looks like a classic coastal capture - we'll see how far west the snow shield penetrates, but again wouldn't be surprised to see less-than-ideal snow ratios, especially with such dry air on the doorstep to eat away at that moisture.