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. This program is available as a free download at A video on how to download and use this program is available here. Please send us your observations using the buttons below.

Locationsort descending Region Observation Type 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
1 km W of Castle Peak Donner Summit Area Snowpack Observation 12/19/2016 - 13:00 Educator
Donner Summit Avalanche Seminars
1/2 way up Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation 02/16/2017 - 13:17 Wandering crust below 70cm Rain Crust Slope angle Rain Crust @70cm from top Pit aspect and coordinates Slope where snowpit was dug (past dead tree in pic) Public
3rd drainage north of "Peak 9614", S of Monument Peak Outside of the Forecast Area Snowpack Observation 01/27/2017 - 16:00 Variable wind affected & consolidated powder looking S at ridge Debris field looking back up drainage skied. Public
above buck lake West Shore Area Avalanche Observation 03/01/2017 - 14:00 wind loaded slab wind loaded slabs Public
above China Wall Donner Summit Area Snowpack Observation 12/03/2016 - 14:00 Guide
Tahoe Mountain School
Above Crater lake, Red Lake Pk Carson Pass Area Avalanche Observation 12/27/2016 - 23:30 The snow on bed where failure occured. Public
above old ASI Donner Summit Area Snowpack Observation 12/28/2016 - 15:00 Guide
Alpenglow Expeditions
Above winnimucca lake Carson Pass Area Avalanche Observation 04/10/2017 - 11:00 Public
Alhambra Mine Carson Pass Area Snowpack Observation 12/09/2016 - 12:00 Running water at approximately 8800 feet near Stevens Peak. Rime or snow dusting southwest aspect of Stevens Peak. Approximately 3mm striated facets at base of snowpack in this location. Professional Observer
Anderson Ridge Donner Summit Area Snowpack Observation 12/18/2016 - 11:57 running water down low 90cm HS 15cm fluff w thick ice layer boiler plate with blown in fluff and east winds up high undisturbed fluff on hard crust, some hoar in sheltered areas Public
Andesite Peak Donner Summit Area Snowpack Observation 12/08/2016 - 11:00 Forecaster
Andesite Peak Donner Summit Area Avalanche Observation 02/16/2017 - 11:30 Split-board kicks triggered a refrigerator sized cornice failure onto the wind loaded test slope. This resulted in a 12-14 inch deep wind slab failure.The other side of the wind slab that resulted from the cornice drop.Wind slab cracking in an undercut wind-loaded slope Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 01/15/2017 - 13:00 Guide
Tahoe Mountain School
Andesite Peak Donner Summit Area Avalanche Observation 01/20/2017 - 15:45 D2 Wind slab avalanche triggered by a small cornice piece Small avalanche triggered by a larger piece of corniceCracking in the storm snow on in below treeline terrain Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 02/12/2017 - 14:00 Guide
Tahoe Mountain School


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