I went to Squaw on January 25th. As all the resorts in Tahoe, the snow is slim and the rocks are abundant. Although, I see the pull to this resort, right now with the snow and groomers lacking I suggest you skip this resort for Northstar or Sierra. This resort is huge, but I don't think I found one really good groomed run except the road down to the village (Mtn. run). Although this was the least favorite of the four resorts I went to in Tahoe (Kirkwood, Sierra and Northstar), the beginners park off of the Belmont lift made a bad day into a good one for me. The park has at least a dozen different rails, 4 kickers and a medium size jump - I suggest spending the day here if you don't find fun on the "groomers".
FYI - I would definintely hit this resort with more snow :)