Observation: Bountiful Peak

Observation Date
02/25/2018
Observer Name
Bo Torrey and Andrew Nassetta

Region:

Location Name or Route
Bountiful Peak
Weather
Sky
Scattered
Wind Direction
Southwest
Wind Speed
Light
Weather Comments
10" to 18" of new snow above 8000' 4" to 6" of new snow at the parking lot. Moderate W SW winds were drifting snow throughout the day. Cloudy in the morning until about 11am. Sun came out for a few hours mid day. Clouds rolled back in late afternoon.
Snow Characteristics
New Snow Depth
14"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
Great riding conditions. 10" to 18" of new snow.
Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Wind Loading
Cracking
Collapsing
Red Flags Comments
Craking and collapsing in the wind loaded areas. Recent avalanches in the area, including naturals and a rider triggered avalanche. Photos below. Avalanche occurred on 2/24/18
Avalanche Problem #1
Type
Persistent Slab
Trend
Same
Problem #1 Comments
The persistent slab avalanches were the most dangerous problem we faced during our day today. A couple centimeters of facets are buried below the snow surface. The depth of this layer varies from area to area. The weak layer averaged 80cm below the surface. We chose to stick to low angle slopes not connected to steeper terrain above or adjacent to us. Over 40" of new snow has fallen in the past 7 days. This new snow has added enough weight to the snowpack to increase the likelihood of triggering one of these 2' to 3' deep avalanches. We did a number of Extended Column Tes'st (ECT). On all of our test we were able to produce propagation of the column. ECTP15, ECTP24, ECTP 17
Avalanche Problem #2
Type
Wind Slab
Trend
Decreasing Danger
Problem #2 Comments
Easy to identify and avoid steep wind drifter slopes today. Round, pillowy, wind effected slopes were easy to notice large wind slabs on them. Riding conditions on lower angle slopes right now is 5 star. Coverage is improving in this area. Noticed several natural avalanches triggered from cornice falls.
Snow Profile
Aspect
North
Elevation
8400
Slope Angle
31
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Snow Profile Coordinates