Mt Lassen facts

Mt Lassen is one of the largest lava domes on Earth. With precip., it receives on avg. 660 inches/ yr., making it the highest snowfall total in CA (even more than Shasta).

when does the first snow come?
what are the roads like in the winter?
Are there better winter routes to the top than the summer trail? (from a hazard perspective)
What kind of snow levels can one expect in the fall and winter in Nor Cal?
(im moving down your way for a few months, just scoping the possibilities that are within half a day from east bay)

  making it the highest snowfall total in CA (even more than Shasta).

and it has far better winter touring as well

- The mtn. is pretty much closed from winter, to I guess April or May, when they start plowing (the Park Road). The TH for the Peak, opens sometime around Mem. Day offering the best access for the summit !

The mountain is really not closed in winter.
It offers a lot of good skiing.
The road closes  with significant snowfall, but there is access from the north at manzanita lake and in the south  at the ranger station / entrance.
Manzanita lake in the north is at 5900 ft so it is relatively low and provides a fairly flat access to Lassen peak either  accross the jumbles or up manzanita creek trail.
Good stuff can be also found on and around Loomis .
Last winter it had a better snow pack then Shasta early on.
In the south you can access the peak by going up the road.
It is a nice trip to ski up to and camp at helen lake below the peak.
From there,there is a lot of choices.
Lassen provides a lot of winter fun and has a large variety of terrain with better protection from high winds compared to Shasta.

- Yaa, I'm unfortunately a 'heavy' skier, so I do the Lassen thing when the road opens. Come down to Tahoe in winter and 'BC' the Mt Rose area for the fresh.
PS- there is a Lassen Ski guide available on Amazon.