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
01/25/2020 - 13:45 .4 Miles SE of Mt. Houghton Mount Rose Area Avalanche Observation WL-AS(?)-R1-D1 from a distance WL-AS(?)-R1-D1 from below Pinwheel with 125cm pole for reference Public
01/25/2020 - 14:00 Indian Valley Ebbetts Pass Area Snowpack Observation Professional Observer
01/25/2020 - 14:00 School Rock [Across from China Wall of the Sierra] Donner Summit Area Avalanche Observation Natural Cornice Avalanche SouthEast Face School Rock Natural Cornice Avalanche SouthEast Face School Rock Public
01/25/2020 - 14:30 1/2 mile NE from Toms meadow Independence Lake Area Snowpack Observation Public
01/25/2020 - 15:00 Powderhouse Snowpack Observation Educator
Lake Tahoe Community College - Wilderness Education
01/26/2020 - 06:00 Above Round Lake Luther Pass Area (including Job and Freel) Snowpack Observation Small pit done about 4:00 pm last night before it started raining. Top 5cm of snow wet due to above freezing temperatures. Chowder snow this morning around 9:00AM Educator
Lake Tahoe Community College - Wilderness Education


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