Tag Archives: snow stability

Jan. 28th Snow Obs

The snow pack has adjusted to the added weight from the last weeks new snow and one significant wind event. I am rating current conditions at a Moderate Hazard. Natural avalanches unlikely, human triggered possible. Small avalanches in specific areas, or large avalanches in isolated areas.

Old Deep Instabilities: While the chance of triggering an avalanche has decreased, it is worth noting that some runs contain large wind loaded and crossloaded hard slabs up to a meter deep in some locations siting on weak depth hoar. These slabs are generally strong enough to support skiers weight, but if you did trigger one it could be large and very consequential. These slabs are on rollovers, ridge lines and starting zones on mostly North to West aspects, but there is some variability in distribution. Keep your eyes peeled.

New Shallow Instabilities: New soft slabs and in some cases hard slabs up to 30cm deep reacted naturally just after the 55mph wind event on Jan. 24 on top of the Thanksgiving rain crust, or just below that on the facets. Some of these are located on the cross loaded ridges of the SE aspect of Marmot. They appear to have reacted on slope angles 35+ degrees. Be careful that one of these doesn’t take you into a terrain trap.

 

Post Jan 24 Marmot S 4000' HS-N-R1D1-O

Post Jan 24 Marmot S 4000' HS-N-R1D1-O

 

Post Jan 24 Marmot S 3700' HS-N-R1D1-O

Post Jan 24 Marmot S 3700' HS-N-R1D1-O

Skiing Conditions: Variable, from powder to crust to facet garden to dust on slabs.