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
01/25/2020 - 10:00 Stevens Peak Carson Pass Area Snowpack Observation Public
03/06/2020 - 11:00 Tamarack Peak Mount Rose Area Snowpack Observation low tide at trailhead N facing 9500’ HS 150 ECTN 18 130cm ECTN 28 120 cm on softer more angular layers sun affected, wind scoured, wind loaded wind scoured hourglass sun affected proletariat with wave clouds Public
11/28/2019 - 07:30 Donner ridge. Donner Summit Area Snowpack Observation Public
01/16/2020 - 01:45 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Public
01/26/2020 - 04:00 Skiers left arm Mt Tallac Avalanche Observation Public
12/03/2019 - 02:00 East Shoulder of Mount Rose Mount Rose Area Snowpack Observation Roller ball activity, SE slope @ 8500' Public
01/17/2020 - 11:00 North side of Independence Lake Independence Lake Area Avalanche Observation 18" crown 36" crown , Public
02/15/2020 - 12:00 Mt Tallac West Shore Area Snowpack Observation Cathedral bowl Nice corn run SE aspect @ noon Public
03/15/2020 - 13:30 Benson Hut Donner Summit Area Snowpack Observation Public
12/08/2019 - 13:30 Tram Ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
03/18/2020 - 14:00 North Ridge of Echo Peak Echo Summit Area Snowpack Observation Public
01/19/2020 - 11:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Single track leading into the slide, zigzaggy crown while not large, deep enough for burial run out tracks leading out Public


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