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 buttons below.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
03/31/2019 - 11:30 Twin Peaks Blackwood Canyon or Ward Canyon Area Snowpack Observation Very wet snow and small rollerballs on a shallow S facing slope at 1pm. Public
12/01/2018 - 12:30 Tamarack peak East aspact at 9800' Mount Rose Area Snowpack Observation Public
01/12/2019 - 12:45 Mt. Rose Mount Rose Area Snowpack Observation Public
04/08/2019 - 01:00 Donner Peak Donner Summit Area Avalanche Observation Public
02/01/2019 - 11:30 Becker Peak Echo Summit Area Snowpack Observation Public
02/17/2019 - 13:00 Below Andesite Peak Donner Summit Area Snowpack Observation Public
12/04/2018 - 03:00 Thunder Saddle Carson Pass Area Snowpack Observation Public
03/24/2019 - 12:30 rose knob Mount Rose Area Avalanche Observation Public
01/03/2019 - 10:00 Angora Peak Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Public
04/20/2019 - 15:15 Negro Canyon Donner Summit Area Snowpack Observation Public
02/09/2019 - 15:00 Brockway Summit Sawtooth Ridge to Tahoe City Snowpack Observation Small cracking in a very soft slab. The larger cracks we saw later were approximately the same depth. Public
02/24/2019 - 12:00 Jake's Peak West Shore Area Snowpack Observation Public
01/08/2019 - 10:00 Mt Rose Mount Rose Area Avalanche Observation Public
03/29/2019 - 14:30 Hope Valley/Blue Lakes Carson Pass Area Snowpack Observation Obvious wind activity Close up of what appeared to be a small avalanche. Public
01/23/2019 - 09:15 Porcupine Ridge East Shore Area Snowpack Observation SE aspects with dry/wintery snow above 9000 ft at 9:15 am Porcupine Ridge/ST terrain The observation wall of our profile Natural roller balls on E-SE terrain under rocks Public


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