Weather Underground is often ..exuberant with its forecasts in extreme conditions.
On the other hand, it is also ahead of other tools at times.
Recall last year's extreme heat, where numbers were off the charts historically - and it played out.
It's been right a few times on snow in the past seven years too - so here we sit, and here we shall remain! Christmas will be spent on the hill-top rather than spent on potentially slick roads and increasingly Covid /omicron-riddled locations. Disappointing, but reasonable given the forecast volatility!
The number of white Christmases in my lifetime can fit comfortably on one hand. This might be one of the missing fingers (no we aren't up to the thumb yet, I'm certain of that!). The odds of consecutive snowfall days around here are also quite rare, so I truly do not expect this amount (looks like .. 16 inches less a tenth) to sit on the ground by late Wednesday. Unless the forecast makes a major u-turn though, a foot would not be a shock.