I went from the South Fork Trailhead to Dry Lake last Friday. The trail was pretty much snow covered, but it was very thin in places and starting to melt out in the areas with good sun exposure. The bushes (manzanita and chinquapin) were not completely covered with snow; so in the bushy areas the trail was the way to go. I don't ski, but I did have snowshoes with me. I did not need them until after the Dry Lake/Dollar Lake junction when I went up the drainage gully to Dry Lake. The South Fork Meadows south of the Dry Lake/Dollar Lake did not have good snow coverage and the bushes were still very visible; so going that way up to Christmas Tree Hill or Charlton wasn't an option, but there was probably enough snow to go up in the trees to the Dollar Lake area and maybe higher. There wasn't a lot of snow up high on the north slope of San Gorgonio. Anyway, a few more inches fell this week up there, but it's probably still not primo conditions for skiing. At the same time, you could probably do a little wandering around in the areas that do have enough coverage. It's been cold so it's not melting off that fast.
The big storms that have given the Sierra Nevada well above normal December totals have just grazed southern California. Watch the storms and after a decent one or two comes in over southern California you should have a nice deep base.
My guess is yes. About 1.5 feet fell at 6000' and more up higher. Snow is down to under 3,000' - even ran in some snow this morning in the Crafton HIlls. Maybe not all the Chinquapin and Manzanita is covered in some areas, but I'll bet it's probably still pretty nice out there. I'm looking forward to checking it out next weekend when the roads are clear and the weather is warmer (I'm too old to go out in the cold anymore).