The November issue of Outside Magazine touts the 16 best ski resorts of North America, with Colorado's Silverton Mountain taking the fourth spot. Immediately after comes Breckenridge, and Aspen/Snowmass sits at number eight. Crested Butte lands at number 12, and Steamboat appears at number 14. Silverton earns Colorado's top spot for its low-frills approach, tons of powder, and epic riding. Big-mountain skier Chris Davenport says it's "like a heli-ski operation with a chairlift." Silverton also happens to be the place where Red Bull built Shaun White his own halfpipe (video below; hat tip to Westword.) Meanwhile, as temperatures climb to the low 70s today on the Front Range, Keystone Resort is celebrating opening day in the high country. The Denver Post reports last week's snowstorm helped Keystone bump up its opening day, which will include top-to-bottom skiing, along with two jumps and nearly two dozen features in its A51 terrain park. Free Skier Magazine thanks the wonders of the iPhone and "a mole planted deep within the Keystone team" for a group of photos and video of the terrain park, which, the mag writes, will convince you to pony up the funds for a ski pass. Copper Mountain opens Friday, so find a way to ditch the cubicle and head to the state's many slopes sometime soon.