Observer Name
Staples
Observation Date
Sunday, January 5, 2020
Avalanche Date
Saturday, January 4, 2020
Region
Provo » American Fork » Dry Fork
Location Name or Route
Sunset Peak
Elevation
10,000'
Aspect
Southwest
Slope Angle
35°
Trigger
Snowmobiler
Avalanche Type
Soft Slab
Avalanche Problem
Persistent Weak Layer
Weak Layer
Facets
Depth
2'
Width
100'
Vertical
150'
Comments
Found this additional avalanche that was likely snowmobile triggered. It was nearby a slide that partially buried a rider. It is unclear if this slide was triggered by the same party or not.
Comments
Nearby in undisturbed snow the crust was easy to find. Because it is only 1-2 feet deep, IT IS REALLY QUICK AND EASY TO do a stability test on this layer. An Extended Column Test fractured (ie - propagated a crack across the column) after 21 hits (first on swinging from the shoulder). ECTP21
Basically, we treat any ECTP as an unstable test result.
Coordinates