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
01/20/2020 - 12:00 Brockway Summit Sawtooth Ridge to Tahoe City Snowpack Observation ECTN22 on top of sugary facets Public
03/17/2020 - 12:30 Rubicon 8300' ne ridge West Shore Area Snowpack Observation Public
01/12/2020 - 13:00 Mt. Reba Bear Valley Area Snowpack Observation Wind loading north aspect Wind loading north aspect Cornice on north aspect Public
01/29/2020 - 11:00 Tamarack Peak Mount Rose Area Snowpack Observation soft wind blown snow at trailhead 8600’ summit bowl new wind loading with NE wind scourglass yesterday’s SW wind and loading transitioning to NE wind Public
12/05/2019 - 11:30 Steven’s Peak Carson Pass Area Avalanche Observation Avalanche pic 1 Avalanche pic 2 Public
04/04/2020 - 16:45 Andesite Donner Summit Area Snowpack Observation Top of hand pit with 6” on new snow on crust Hand pit showed a weaker/softer snow below the sun crust. Easy fracture at below the crust, then surprisingly another fracture 10-12” inches below the crust. Stomped on cornice and pushed off a small slide Stomped on cornice again further down and it broke up to 25’ away Public
01/26/2020 - 02:00 Waterhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
01/26/2020 - 12:30 Round Top Carson Pass Area Snowpack Observation stability test location on round top Public
03/22/2020 - 11:30 Incline Peak Mount Rose Area Avalanche Observation Small wet loose slide, south face of Incline Peak, around 4pm Surface hoar on an east aspect of Incline Peak, around 10am Public
01/18/2020 - 10:00 south of echo peak east trees Echo Summit Area Avalanche Observation Public
12/30/2019 - 01:45 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
04/08/2020 - 12:30 Mt Tallac Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public
02/10/2020 - 12:30 N. aspect Incline lake Peak Mount Rose Area Snowpack Observation CTM SP @ 17cm down Near surface facets from CTM SP @ 17cm down Public
03/26/2020 - 13:00 Frog Lake Cliffs Donner Summit Area Avalanche Observation Public
02/16/2020 - 09:00 Tamarack peak east side Mount Rose Area Snowpack Observation Public


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