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
03/23/2018 - 03:30 "Broken Glass" Tammarack Peak area Mount Rose Area Avalanche Observation Public
02/24/2018 - 12:39 Thumb rock Donner Summit Area Snowpack Observation Public
12/19/2016 - 13:00 1 km W of Castle Peak Donner Summit Area Snowpack Observation Educator
Donner Summit Avalanche Seminars
02/16/2017 - 13:17 1/2 way up Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Wandering crust below 70cm Rain CrustSlope angleRain Crust @70cm from topPit aspect and coordinatesSlope where snowpit was dug (past dead tree in pic) , Public
01/27/2017 - 16:00 3rd drainage north of "Peak 9614", S of Monument Peak Outside of the Forecast Area Snowpack Observation Variable wind affected & consolidated powder looking S at ridgeDebris field looking back up drainage skied. Public
12/26/2017 - 11:00 400 m WSW of Deep Creek Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Donner Summit Avalanche Seminars
01/10/2016 - 15:00 4th of July Area Blackwood Canyon or Ward Canyon Area Avalanche Observation
03/04/2018 - 19:00 About 100 feet down from the bowl at the top of ‘elevens’ on Trimmer Luther Pass Area (including Job and Freel) Avalanche Observation Public
03/27/2016 - 11:00 Above Black Wall Donner Summit Area Avalanche Observation
03/01/2017 - 14:00 above buck lake West Shore Area Avalanche Observation wind loaded slab wind loaded slabs Public
12/03/2016 - 14:00 above China Wall Donner Summit Area Snowpack Observation Guide
Tahoe Mountain School
03/19/2016 - 14:30 Above China Wall Donner Summit Area Snowpack Observation Guide
Tahoe Mountain School
12/27/2016 - 23:30 Above Crater lake, Red Lake Pk Carson Pass Area Avalanche Observation The snow on bed where failure occured. Public
03/17/2016 - 10:02 above Donner Pass Road Donner Summit Area Avalanche Observation
Donner Summit Avalanche Seminars
03/13/2016 - 12:00 Above Fontanillis Lake Desolation Wilderness Area (including Emerald Bay) Avalanche Observation


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