Brian Head has the highest elevation in Utah I believe. (maybe the area). I grew up in Vegas and went up to Brian Head regularly. February will still have snow absolutely. Feb/March are typically when the most snow drops. There is another place about 2 hrs north of Brian Head that's relatively new called Eagle Point. It's only been open like 5 years? So I have no idea if it's good or not. Brian Head is alot of fun, but it's not a big mountain. Vegas itself also gets snow at Mt. Charleston, which is about 45 mins outside the city. It also has a ski resort (tiny as fuck, like 3 lifts and 10 runs) but if all you want to do is play in the snow it's a fun area. I can't guarntee snow there though, because it is at a lower elevation.