Observation: Silver Fork

Observation Date
4/8/2013
Observer Name
Bruce Tremper
Region
Salt Lake
Location Name or Route
Alta to Honycomb and Silver Fork and return
Weather
Sky
Obscured
Precipitation
Moderate Snowfall
Wind Direction
Northeast
Wind Speed
Light
Weather Comments
Cloudy and snowing all day with snow coming in waves.
Snow Characteristics
New Snow Depth
8"
Snow Surface Conditions
Powder
Snow Characteristics Comments

Dense powder was best at elevations above 10,000' where it was quite creamy and it was a bit manky at elevations of 9,000' and below. It was good riding with about 7-8 inches of dense powder on a hard, icy crust. A lot of the south facing slopes below 9,000' are quite thin these days with lots of rocks but all the other slopes have good coverage.

Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Wind Loading
Cracking
Red Flags Comments
See below
Avalanche Problem #1
Problem
New Snow
Trend
Same
Problem #1 Comments

The new snow sluffed easily on the old, hard, icy crust on any steep slope. In some places near the upper ridglines, it would crack out in small, soft slabs. These avalanches were quite manageable but something you had to pay attention to steepness and consequences.

Avalanche Problem #2
Problem
Persistent Weak Layer
Problem #2 Comments

The winds stayed quite reasonable so they did not build too many wind slabs along the ridges where we were but I suspect there were some more exposed places or higher elevations where wind slabs were being formed. If the wind comes up tonight or tomorrow, as forecast, we will have to worry about lots of wind slabs because there is so much snow available for transport.

Comments

Shallow skier-triggered slab near the ridge of Honycomb on the northwest facing slope. It was quite steep, more than 40 degrees. The new snow was sliding easily on the hard, old crust underneath on the very steep slopes.