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
03/24/2019 - 13:00 East Lincoln Donner Summit Area Avalanche Observation




02/23/2019 - 13:00 Ebbets pass Snowpack Observation Public
12/10/2018 - 11:45 N End of Janine's Ridge Desolation Wilderness Area (including Emerald Bay) Snowpack Observation 5cm Windslab Public
02/24/2019 - 15:30 Brockway Summit Sawtooth Ridge to Tahoe City Snowpack Observation Artificially loaded pst, snow surface green 25/100cm. new old snow interface red 28/100cm ECTN8 4 inches down on the new old snow interface Public
12/12/2018 - 12:30 South Ridge Houghton Mount Rose Area Snowpack Observation Public
02/12/2019 - 10:30 Centerville Peak Luther Pass Area (including Job and Freel) Snowpack Observation Settlement of recent storm snow of a few inches was obvious around most N facing trees at 9,000 ft. Intense snow transport over Freel Peak Wind texture snow in the foreground with small wind slabs developing on the opposite slope Public
02/16/2019 - 14:15 Schallenberger ridge Donner Summit Area Snowpack Observation Public
11/29/2018 - 12:30 Relay Peak Mount Rose Area Avalanche Observation Small windslab along ridge line Public
03/03/2019 - 12:00 Blue Lake Carson Pass Area Avalanche Observation Public
12/19/2018 - 13:45 West ridge of peak 9,422’ Carson Pass Area Snowpack Observation Public
03/20/2019 - 16:30 Castle Peak Donner Summit Area Avalanche Observation Wind slab from a hand pit. This slab was 5 inches thick. While it did not break super cleanly, it did break with minimal force. This photo shows the slab rotated up 90 degrees. Public
02/18/2019 - 11:00 Johnson Canyon Donner Summit Area Snowpack Observation Public
03/06/2019 - 15:00 Below Echo Peak Echo Summit Area Snowpack Observation Public
03/24/2019 - 10:00 Tamarack Peak/Fireplug Mount Rose Area Snowpack Observation loose wet slides on fireplug Public
03/09/2019 - 10:30 Echo Peak Echo Summit Area Avalanche Observation Public


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