Observation: Snowbasin Backcountry

Observation Date
1/15/2014
Observer Name
Kevin S
Region
Ogden » Snowbasin Backcountry
Location Name or Route
Snowbasin, Side country, Hells Canyon, Number 2
Weather
Sky
Clear
Wind Direction
Northwest
Wind Speed
Strong
Weather Comments
Exposed peaks and ridges had gusty winds, not much wind off the peaks.
Snow Characteristics
New Snow Density
Medium
Snow Surface Conditions
Dense Loose
Wind Crust
Snow Characteristics Comments
Settled and wind blown snow
Red Flags
Red Flags
Heavy Snowfall
Wind Loading
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Problem #1 Comments
Strong North westerly winds for two days before the avalanche
Snow Profile
Aspect
East
Elevation
9,000'
Slope Angle
38°
Comments
This is a picture of the starting point of the large skier triggered avalanche in the Snowbasin sidecountry that occurred 1/15/14. This is in the Hells Canyon area and the actual line is known as #2. There are 3 main slide paths into Hells Canyon. The ski patrol probably has a different name. It appears the avalanche was a wind slab that failed on a large convex shaped roll over at the top. The slide pulled up the slope towards the ridge further than I have seen any previous slide in that area rip out in the past 10 years. It appears this was a wind slab as it did not appear to rip to the weak layers on the ground. No rocks or bushes were visible in the starting zone on the bed surface in the starting zone. Surprisingly, the winds did not transport much new snow into the starting zone and the crown was clearly visible one day later.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Coordinates