Alot. it's actually the lowest amount of snow I have ever seen it open at in 22 years. The groomed main runs are fine but dont go off the beaten path at all. lots of exposed and hidden creeks. I did once just crossing over at the bottom between Skyline and Brooks chair and almost ate sh!t big time in a creek. Had to hop it at full speed, involuntarily. almost left a load in my pants.
if this warm weather and rain makes the base any worse I wouldnt be surprised if they closed it.