Please remember that these observations indicate what was going on in the snowpack at a single point in time and space. They may not represent conditions where you are or where you plan to be. They also come from a variety of sources. SAC cannot vouch for the quality or accuracy of any observations that come from the general public. Some of these may be professional quality observations; some may not. Please use observations listed on this page as part of your information gathering process, but as always don't make decisions based on a single piece of information.

If you are looking for more information on how to understand the information on this page, all of the pit data graphs and stability tests are part of what is presented in a Level II avalanche class that follows the American Avalanche Association (AAA) or American Institute for Avalanche Research and Education (AIARE) curriculum guidelines. All of the coding and abbreviations for data presented follows the publication Snow, Weather, and Avalanches: Observational Guidelines for Avalanche Programs in the United States (SWAG) which is the standard for all professional avalanche programs in the US. An electronic copy is available here. Most of what you are looking for is in Chapter 2 and Appendix F part 1. We use a program called SnowPilot to create the snowpit graphs. This program is available as a free download at http://www.snowpilot.org/. A video on how to download and use this program is available here.

Location Region Observation Type Date and time of observation or avalanche occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Andesite Peak Donner Summit Area Snowpack Observation 12/16/2016 - 12:30 Small localized cracking in wind loaded terrain.  E aspect 8200' Small cornice kicks did not cause any wind slab failure.  8200', E aspect. ECTN and ECTP in wind loaded E aspect.  8200'. Cracking around skis into non frozen rain crust Forecaster
East Face of Judah Donner Summit Area Avalanche Observation 12/16/2016 - 12:30 Viewed from the top of Donner Peak Guide Alpenglow Expeditions
South side of Relay Ridge Mount Rose Area Snowpack Observation 12/16/2016 - 12:20 Public
Southwest of Red Lake Peak Carson Pass Area Snowpack Observation 12/16/2016 - 11:30 Public
Frog Lake Carson Pass Area Snowpack Observation 12/16/2016 - 10:30 Cracking was observed near ridges, cornices, and steep rollovers. Small cornice  drops did not propagate on slope below. Professional Observer
Bronco Chutes Mount Rose Area Avalanche Observation 12/16/2016 - 07:00 Looking up at several crowns that likely happened on 12/16 at the end of the recent storm.A closer look at some of those crowns. Forecaster
Tamarack Peak Mount Rose Area Avalanche Observation 12/16/2016 - 00:30 Panorama looking down the avalanche.A crack on the ridge that ran the length of the avalanche. The debris Mostly filled in crown and cornices. Forecaster
Relay Peak Mount Rose Area Snowpack Observation 12/15/2016 - 12:30 55 gallon size cornice chunks Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 12/14/2016 - 12:40 Wind loading at end of day as winds increased wind effect Skin tracks filling in from transport Small isolated area where thin wind slab was forming Public
Andesite Peak Donner Summit Area Snowpack Observation 12/14/2016 - 11:30 Rain runnels existed up to Peak level (8200'). Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 12/13/2016 - 12:00 Snowpit at 9200'.  N-NW aspect.  Facets visible above basal ice. 2-3mm facets at 9760' Surface rain crust below 9000' Forecaster
Elephants Back Carson Pass Area Snowpack Observation 12/13/2016 - 10:00 PST 25/100 END above crown of 12/10/16 Elephants Back avalanche. Professional Observer
Tamarack Pk Mount Rose Area Snowpack Observation 12/12/2016 - 13:00 lower 2" semi supportable rain crust 180cm of snow below summit Facet layer above old crust at approx 60 cm loose facets semi-clumping facets ECTP-8 facet layer propogates when isolated from new snow Public
South Side of Castle Peak Donner Summit Area Snowpack Observation 12/12/2016 - 11:00 Firm icy slopes on Castle Peak Debris left from water coming up out of the snowpack and flowing across the surface. A piece of the crust sawed out of the snowpack. Forecaster
Ophir Cr Avx Path Mount Rose Area Snowpack Observation 12/12/2016 - 10:10 Guide Donner Summit Avalanche Seminars

Pages