Tetons

At the mid and upper elevations areas of deep slab instability persist on some steep slopes. Dangerous hard slabs up to six feet in depth could be triggered by humans who venture into steep avalanche prone terrain. The potential for these deep slabs to be triggered by the weight of a person will increase as the day warms. These deep slabs could be crossed by skiers or snowmobiles multiple times before a weak spot is encountered. These dangerous slabs present the greatest hazard to high marking snowmobilers and skiers who venture into steep bowls, cirques, couloirs and cliff areas. Clear skies and good visibility generally encourage backcountry users to take greater risks. Conservative decisions regarding terrain selection is warranted.

Skies are expected to remain clear with valley fog developing in the morning hours. Temperature inversions will continue with highs near 40 in the mountains and 20 in the valleys. Ridgetop winds will be northerly at 5 to 15 miles per hour.The general avalanche hazard is expected to remain MODERATE Sunday morning and will rise during the day as sunshine and warm temperatures heat the upper portion of the snowpack. Areas of deep slab instability persist in steep, avalanche-prone terrain. These dangerous hard slabs, up to six feet in depth, are becoming more difficult to trigger and could be crossed multiple times by skiers or riders before a weak zone is encountered, causing failure of the slope. Snowmobilers high marking steep bowls and cirques are particularly at risk. Conservative decision making, good travel habits, and the ability to resist peer pressure are all important for safe travel in avalanche terrain on Sunday.