Laramie, Wy – The avalanche danger increased significantly this week in the Tetons. The mountains were hit with 45 inches of snow. Avalanche forecaster Bob Comey says that's sitting on an unstable layer called surface hoar.
Comey says skiers and snowmobilers need to be cautious for a few weeks because hoar frost remains weak for a long period of time and it is usually several weeks after a storm that fatalities occur.
Comey says snowmobilers are at higher level of risk because they're heavier.
One skier was buried this week, but his friends managed to dig him out before he died.