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 buttons below.

Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
03/27/2016 - 11:00 Above Black Wall Donner Summit Area Avalanche Observation
12/18/2016 - 12:31 Sugar Bowl/ Mt. Judah Donner Summit Area Avalanche Observation
Alpenglow Expeditions
01/24/2018 - 11:00 Lower Andesite Ridge Donner Summit Area Avalanche Observation
Tahoe Mountain School
12/24/2016 - 11:30 Andesite Peak Donner Summit Area Avalanche Observation
01/15/2017 - 13:45 Jobs Peak (Jaws) Luther Pass Area (including Job and Freel) Avalanche Observation
01/21/2017 - 15:30 Incline Lake Peak Mount Rose Area Avalanche Observation
Crown of smaller test slope
Small slide on test slope with 40+ deg slope
Shooting  crack near summit that released when triggered with cornice drop
02/05/2017 - 08:00 Upper Spencer's Lake Outside of the Forecast Area Avalanche Observation
01/15/2016 - 12:00 Ralston Peak Echo Summit Area Avalanche Observation
01/23/2016 - 13:30 Andesite Ridge Donner Summit Area Avalanche Observation
01/26/2016 - 12:35 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
03/04/2017 - 14:10 Wheeler Ridge Bear Valley Area Avalanche Observation
03/23/2017 - 14:00 Lower Davis Creek Mount Rose Area Avalanche Observation
Looking up the slide path 1500 vertical feet.
Looking down slide path 400 vertical feet
04/23/2017 - 10:30 South side of Rose Mount Rose Area Avalanche Observation Public
04/10/2016 - 13:30 Woods Lake near Lost Cabin Mine Carson Pass Area Avalanche Observation
12/10/2017 - 11:35 Mount Price Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public


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