Avalanche

Avalanche: Steam Mill

Erik SyrstadLogan
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Avalanche

Slab Width
18 m
Weak Layer
New Snow
Trigger Type
Skier
Avalanche Type
Soft Slab
Slab Thickness
10 cm
Trigger Detail
Intentionally Triggered
Start Zone Aspect
Northeast
Avalanche Problem
New Snow
Start Zone Elevation
2774 m

This was an intentional trigger from a ski cut off the ridge just north of Steam Mill Peak. Crown depth varied from 1 to 6". The new dense snow was not bonding well - lots of cracking and easy shears along the uptrack. Quite a bit of wind out there today, even in sheltered areas. Some graupel. Skiing was fairly 'meh' thanks to the inverted and slabby conditions.

I'd expect this storm snow instability to settle out rapidly, and I didn't see any signs of deeper issues down at the crust layer... however, there is now enough cold snow from the past few storms (~15" at 9k feet in this location) sitting on top of this bombproof crust that I'll be wary of the sun warming and waking up this slab as the weekend progresses...