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
01/13/2019 - 12:00 Heavenly Ski Area East Shore Area Snowpack Observation A view of the pit with distinct layers CT16 Q1 A view of the bottom of the block that released in the CT. Debris from a major wind event is evident. Public
02/24/2019 - 10:30 Rubicon Peak West Shore Area Snowpack Observation sun affected snow down low surface hoar and wind effect wind features with strong gusts blowing at this time wind layer breaking into "cookies" Public
02/12/2019 - 10:30 Across from River Ranch Sawtooth Ridge to Tahoe City Avalanche Observation Public
11/29/2018 - 08:00 Tamarack Peak Mount Rose Area Snowpack Observation Public
12/19/2018 - 10:30 Rubicon Peak West Shore Area Snowpack Observation Shooting Cracks in Wind loaded area Near Treeline Public
01/19/2019 - 12:30 Trimmer Peak Luther Pass Area (including Job and Freel) Snowpack Observation Localized cracking on wind features Public
12/04/2018 - 03:00 Thunder Saddle Carson Pass Area Snowpack Observation Public
01/08/2019 - 09:15 Red Lake Carson Pass Area Snowpack Observation Public
01/22/2019 - 22:00 Flagpole Peak Echo Summit Area Avalanche Observation Public
03/21/2019 - 12:15 Martis Valley West Mount Rose Area Snowpack Observation Constant cracking while skinning Trees holding a dusting of snow on their north faces, beginning at 6800ft Ski penetration 3-4in Layers marked are (from top): new/old snow interface, very weak layer, beginning of melt/freeze snow, end of melt/freeze snow Rounds taken from melt/freeze layer, mostly 1mm diameter, but stuck together in 3-5mm balls Break from crude shovel shear test Public
01/11/2019 - 10:30 Bronco Chutes Mount Rose Area Snowpack Observation Public
01/03/2019 - 10:00 Angora Peak Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Public
12/14/2018 - 11:00 Pole creek road Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
02/24/2019 - 02:00 Polaris Bowl & Indian Valley Carson Pass Area Snowpack Observation Public
03/09/2019 - 13:00 Frog lake Carson Pass Area Avalanche Observation Public


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