Wish I had double-weighted 1970 ...the only reason I didn't is because it wasn't a second year la nina.
December Analogs: 2007, 2000 (x2), 1974, 1970, 1995, 2005 (x2), 2017 (x2), 2008, 1983, 2020
Like Will said....you have to look at it in terms of probability because even the less suppressive regimes can still screw the pooch with gradient saturation. Each situation is unique, and we refer to past analogs to formulate somewhat of a conceptionalization to guide expectations.
I think some of that may be due to el nino seasons, which are more apt to produce down there when blocking is present because there is a more prominent STJ. La nina can be tougher even with blocking down there because its more n stream prevalent, which obvious better for NE.
Make up my mind on which direction I'm going to be bent over by a grizzly man in a grinch hat....north, or south? This morning you had me 50 and raining on xmas, now its cold and dry with feet in DC...
Look at the sounding I posted from coolwx.com.
Notice how that greater than 0c bubble of air shows up in the mid levels at 00z Sunday? Snow before that point is legit, any after that is the model's delusion.
Taking a closer look at this...that warm layer in the mid levels moves in around 00z Sunday (7pm Saturday), at which point I have like 1-2" of snow....then the rest of the snow looks to come on the back end early Sunday AM, which is suspect to me.
Not to mention this is all assuming 10:1 ratios.
I think Kevin maybe right with the 1-3" up here.