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. It is available as an online tool or as a downloadable program at This website also has a quick video and user guide on how to use create snowpits. Please send us your observations using the button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
11/14/2020 - 11:15 Becker Ridge Echo Summit Area Snowpack Observation S side pit with 1 foot snowpack and ECTN result on poorly developed facets. Maximum extent of wind slab development observed (not much). Ski supportable conditions, staying on top of the dense Nov 13 snowfall. Overall thin coverage with many rocks and logs to hit. Forecaster
11/12/2020 - 11:00 Andesite Peak Donner Summit Area Snowpack Observation Thin snowpack at 7800', E aspect, in below treeline terrain. Limited to no snow on southerly aspects. Previous NE/E wind scouring on the top of Andesite Peak Forecaster
11/12/2020 - 08:00 High Meadows Luther Pass Area (including Job and Freel) Snowpack Observation Public
11/10/2020 - 11:15 Tamarack Peak Mount Rose Area Snowpack Observation Far East Ridge start zones with 4 to 6 inches of snowcover. Pit location at pin drop. NNE aspect at 9,150' Southern end of Proletariat Bowl with 4 to 6 inches of snowcover. Hourglass Bowl, E wind scoured. Relay Peak with 4 to 6 inches of snowcover. Forecaster
11/09/2020 - 11:45 Mt. Judah Donner Summit Area Snowpack Observation 5 to 12 inches of snowcover on NE aspect Wildflower Ridge at about 7,750'. Surface hoar and snowpit. N aspect of Mt. Judah at treeline. A mix a of surface hoar and lightly E wind scoured surface conditions. Surface hoar up to 8mm in wind protected areas. Forecaster


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