It is estimated the Sierra Nevada Mountains have received as much as 7 feet of snow with the latest storms on the west coast.
A few of things:
There MAY be great skiing as soon as the roads are clear, but, be cautious of very loose powder.
The rangers will have to scope out any potential avalanches before skiing begins.
Call ahead to hotels and/or listen to any radio broadcast known to carry ACCURATE road conditions as well as slope conditions. It takes awhile to remove 7 feet of snow from mountain roads.
Last, but, hardly least; there maybe people stranded and possibly deaths if people braved the snow to leave the area. All in all there are real life reasons to be cautious.
That all said; enjoy the holidays.