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
01/17/2019 - 13:00 Brockway Summit Sawtooth Ridge to Tahoe City Snowpack Observation Isolating the column took some digging. The layer of with potential buried surface hoar was knee level Public
02/19/2019 - 14:00 Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Surface hoar Cracked settlement cone Satstrugi Public
02/09/2019 - 23:00 Ridge between Forks of Coldstream Creeks Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
02/23/2019 - 14:30 Relay Peak Mount Rose Area Snowpack Observation Public
03/10/2019 - 13:00 Fire Plug Mount Rose Area Snowpack Observation 2-3 foot cornices would collapse with a few kicks After undercutting, this wind lip did not crack or break when jumped on Public
03/29/2019 - 10:00 Judah Peak Donner Summit Area Avalanche Observation Wind slab avalanche on the east face of Judah Peak caused by an oven sized cornice failure Public
01/31/2019 - 12:15 Jake's Peak West Shore Area Snowpack Observation Public
02/12/2019 - 11:45 Observed from vehicle on Donner Pass Road Donner Summit Area Avalanche Observation Public
03/01/2019 - 11:00 Castle Peak Donner Summit Area Snowpack Observation Settlement cracks Extreme wind features on SE slope Small cornices breaking with much force Massive, layered cornice Public
12/05/2018 - 12:30 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
03/03/2019 - 16:00 Elephant Hump Ridgeline Carson Pass Area Avalanche Observation First view of slide as I approached on skin track Debris pile an cornice and face that slid Skin track often comes out of the woods on the flat shelf in the center of this photo Public
04/12/2019 - 11:00 Jake's Peak (Emerald Bay) West Shore Area Snowpack Observation Loose wet debris on SE slope Zero ski pen on scoured surface Trees dusted w/ snow up high Large debris under a light coat of snow Public
02/18/2019 - 01:30 Rubicon Peak West Shore Area Snowpack Observation Public
03/24/2019 - 10:30 Ridge line between Castle peak and Basin peak Donner Summit Area Avalanche Observation Public
02/08/2019 - 11:00 Mt. Judah Donner Summit Area Avalanche Observation Public


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