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. BAC 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 snowpit 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 two apps - SnowPilot and AvyLab - to create the snowpit graphs. These apps are available as downloads: click here for the free SnowPilot download; for AvyLab, visit Apple's AppStore or the AvyLab website

Location Region Observation Typesort descending Date and time of observation or avalanche occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
Mt. Olsen BWRA Snowpack Observation 02/04/2018 - 12:02 Anti-track cornice creep Sun dogs Avalanche Specialist
Lundy Canyon BWRA Snowpack Observation 01/22/2019 - 13:21 Gilcrest Peak Avalanche Specialist
Leavitt Lake BWRA Snowpack Observation 01/15/2021 - 12:30 Professional Observer
Virginia Lakes Ridge Other Area Snowpack Observation 03/03/2021 - 14:00 Avalanche Specialist
Virginia Lakes Other Area Snowpack Observation 12/08/2021 - 10:45 basal facets Avalanche Specialist
New Snow on Hwy 108 BWRA Snowpack Observation 02/10/2017 - 13:45 Avalanche Specialist
McKay Creek @ Sonora BWRA Snowpack Observation 04/09/2017 - 13:13 Public
PCT Crossing BWRA Snowpack Observation 02/13/2018 - 13:00 BWRA Closed 8K PCT motoX Shallow failure Avalanche Specialist
Mt. Olsen - East Bowl Other Area Snowpack Observation 12/18/2018 - 13:00 Public
Leavitt Lake shoulder BWRA Snowpack Observation 02/01/2019 - 11:09 Surface snow as a result of wind transport Professional Observer
Sonora Pass BWRA Snowpack Observation 03/27/2019 - 14:00 Public
Virginia Lakes Other Area Snowpack Observation 01/21/2021 - 13:30 South aspects are nearly bare Avalanche Specialist
Kettle Peak BWRA Snowpack Observation 03/09/2021 - 11:30 Public
Sardine Can Wall BWRA Snowpack Observation 12/17/2021 - 13:00 Avalanche Specialist
Sonora Pass BWRA Snowpack Observation 02/17/2017 - 12:00 Avalanche Specialist

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