Didn't we have this in December in 2020 too? Something that both December 2010 and December 2020 had in common is that both were la ninas after el ninos, so that may have been a big influence on the high snowfall totals in those 2 la nina winters. Seems like we need either that or a major SSW event like we saw midwinter in 2018 to get big snows in La Nina winters. I saw that an SSW like that might be possible later on in December?