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
03/14/2020 - 14:30 Contention Ridge Donner Summit Area Avalanche Observation Crown Crown Public
03/14/2020 - 15:00 Frog Lake Carson Pass Area Snowpack Observation Cracking in wind slab on a test slope. Winds were impressive and there were areas scoured down to a firm crust. Windy and snowing several inches an hour. Got multiple ECTNs at this wind loaded spot on the edge of the trees. The amount of new snow here was definitely on the high end due to wind loading. , Professional Observer
03/15/2020 - 08:00 China Wall Outside of the Forecast Area Snowpack Observation Public
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
03/15/2020 - 11:45 Rubicon Peak West Shore Area Snowpack Observation ECTP3 on a wind slab layer just below the summit of Rubicon Public
03/15/2020 - 12:00 Deer Park Five Lakes Area Snowpack Observation Guide
Alpenglow Expeditions
03/15/2020 - 13:30 Benson Hut Donner Summit Area Snowpack Observation Public
03/15/2020 - 13:30 Donner Ridge Donner Summit Area Snowpack Observation Ski kick triggered crack on a NE facing wind drifted test slope along the ridge @ 7800 ft. A ski kick triggered a small cornice piece that fell onto this slope and released a 8 to 10 inch deep soft wind slab on the test slope below it. NE facing 7800 ft. Poor visibility due to blowing snow and flat light Forecaster
03/15/2020 - 13:45 Low on Pickett Peak Woodfords Canyon Snowpack Observation Public
03/15/2020 - 14:00 Powderhouse peak Luther Pass Area (including Job and Freel) Avalanche Observation Public
03/15/2020 - 16:00 Coyote Rock Luther Pass Area (including Job and Freel) Snowpack Observation Breaking trail was challenging in the deep pow. Despite jumping on this kickback there was no evidence of slab properties. About 70 cms of new snow. PST 70/100 END down 85 cms Professional Observer
03/16/2020 - 01:00 East Ridge of Tamarack Peak Mount Rose Area Snowpack Observation Wind Affected Ridge Cracks in Cornice Public
03/16/2020 - 11:30 Jakes peak West Shore Area Avalanche Observation Public
03/16/2020 - 11:30 Rubicon Peak West Shore Area Avalanche Observation Public
03/16/2020 - 12:00 Border Ruffian Carson Pass Area Snowpack Observation Professional Observer


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