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
01/19/2020 - 10:30 Trimmer Peak Luther Pass Area (including Job and Freel) Snowpack Observation ECTP16 of the faceted rain crust. A second ECTP15 on the same layer in a different location. Public
12/29/2019 - 13:00 Meadow Lake Independence Lake Area Snowpack Observation Public
03/18/2020 - 10:00 Tamarak/Fireplug Mount Rose Area Snowpack Observation Skin track that was rapidly covered by wind blown snow after our first descent. Public
03/30/2020 - 16:45 DLI / Castle Donner Summit Area Avalanche Observation Public
12/15/2019 - 12:00 Stevens Peak Carson Pass Area Snowpack Observation wind effected snow below ridgelines wind effected snow Public
03/24/2020 - 11:30 Rubicon peak West Shore Area Snowpack Observation Blowing snow refilling old ski tracks Upper snowpack at 8600’ N aspect Public
12/05/2019 - 12:00 Grouse Rock West Shore Area Avalanche Observation Public
03/16/2020 - 13:00 Rubicon Peak West Shore Area Snowpack Observation Right side up snowpack Public
01/17/2020 - 13:30 Waterhouse Snowpack Observation Public
12/24/2019 - 10:00 Mt. Judah Donner Summit Area Snowpack Observation Moderate Sw winds transporting new snow Public
03/26/2020 - 11:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Skier triggered Avalanche Public
02/01/2020 - 13:00 Near Bear meadow Independence Lake Area Avalanche Observation Loose wet avalanche Public
01/18/2020 - 14:00 N side of Round Top Carson Pass Area Avalanche Observation Public
03/02/2020 - 12:00 Relay Peak Mount Rose Area Snowpack Observation Shooting crack in wind loaded area Public
02/07/2020 - 17:15 Castle Peak Donner Summit Area Avalanche Observation Public


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