If it is showing 3, I'd be on 2, but it might be like that Dec 08 period you mentioned yesterday.  That was 2 waves Dec 19 and 21 with low level light snow never stopping in between.  But there was also 5" up here in Dec 17, so basically 31" in 5 days for me.  Earlier this year was 25 inches in 6 days up here.  These things can happen, but if we have blocking wouldn't that tend to slow it down and cause consolidation of waves instead of multiple waves over a few days?