CB Avalanche Center 2015-16 Observations

Location: Crested Butte Area
Date of Observation: 11/19/2015
Name: Seth Beers
Subject: Coney’s
Aspect: North East
Elevation: 10,700

Avalanches: Observed a small natural avalanche (R1D1.5) on SE face of Mineral Point from ridge-line but no other instabilities observed around the areas visible from Ridgeline.
Weather: 34F @ TH @ ~1245, consistent 10 – 15 mph wind from NW with gusts up to ~25. Mostly cloudy with pockets of sun. Blowing snow observed BTL where snow was still available for transport and managed to completely fill-in skin track from earlier in the day in several places.
Snowpack: HS of 45cm on protected, ~30 deg, NE facing slope near ridge of First Bowl. ~10cm of 4F windslab over ~20cm of 1mm F facets then 10cm of 2mm F facets and MFCR at the ground. This structure is fairly consistent across Coney’s with the wind slab generally increasing in thickness and firmness as the aspect rotates east (wind slab up to P hardness in areas). No instabilities observed and wind slab didn’t propagate much beyond skis. There are a couple of interfaces that will be important to note as load is added: 1) Wind Slab – Facet interface produced a clean break @ CT8 and 2) Facet – MFCR interface.

First Bowl skied quite well – doesn’t have much of a slab on top. Convex Corner has a stouter slab that makes for hooky turns. Ski light as it’s still quite thin.