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
01/02/2020 - 12:00 Donner Peak Donner Summit Area Snowpack Observation Public
03/25/2020 - 18:30 East of Scott Peak Blackwood Canyon or Ward Canyon Area Snowpack Observation Public
01/18/2020 - 18:30 1/4 mile south of Bear Meadow 7800ft Independence Lake Area Snowpack Observation Level 1 moto instructor Bear Meadow snow pit Bear Meadow location of snow pit Public
04/11/2020 - 01:00 Round Top & Elephants Back Carson Pass Area Avalanche Observation Public
12/29/2019 - 10:30 NE Ridge of Silver Peak Snowpack Observation Evidence of small windslabs on N facing terrain, leeward to SW winds Evidence of small windslabs on N facing terrain, leeward to SW winds

Wind Transport on NE Ridge of Silver Peak (12-29-19)

03/15/2020 - 11:00 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Snow plastered on trees (N-facing on this one), on almost all aspects of tree trunks (i.e. adjacent trees had wind-blown snow on trunks on E sides, others on W sides)...swirling winds during this storm? Variable skin-track depth, from boot-top to quad (as seen here) Public
01/20/2020 - 13:45 Donner Ridge Donner Summit Area Snowpack Observation Public
12/15/2019 - 13:00 Fireplug Mount Rose Area Snowpack Observation N 8900' HS145cm HN15cm ECTX Fist to 4F to 1F Minor cracking Public
03/17/2020 - 13:00 Sonora pass Outside of the Forecast Area Avalanche Observation Public
01/12/2020 - 02:00 Talking Mtn Echo Summit Area Snowpack Observation released wind slab over trigger Public
11/27/2019 - 10:00 Tamarack Peak Mount Rose Area Snowpack Observation Hand pit showing crust and basal facets Public
03/29/2020 - 11:00 E-ridge of Tamarack Mount Rose Area Snowpack Observation Some cracking in the new snow on top of a firm/MF surface on a S-facing slope Graupel accumulation A quick burst of heavier snowfall; coverage low with rocks/grass poking out in S-facing scoured areas Quick hand pit on a S-facing slope in area with breakable crust. Boot pen through both crusts, ski pen just cracking top crust. Soft, cold snow (F to 4F) above, between, and below the crusts. Public
01/29/2020 - 01:30 North Side Castle Peak Donner Summit Area Avalanche Observation Public
03/19/2020 - 10:00 Donner Summit Donner Summit Area Avalanche Observation sheltered  N aspect small surface hoar and settlement ring settlement cracking moderate to large cornice with widespread sloughing beneath skier triggered mid slope D1 release on NE aspect two side by side skier triggered D1 releases NE aspect afternoon rollerballs at lower elevations Public
01/15/2020 - 16:00 Donner Ridge Donner Summit Area Avalanche Observation Public


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