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
02/17/2019 - 13:00 Herlan Peak East Shore Area Snowpack Observation Public
02/17/2019 - 13:00 Donner Ridge Donner Summit Area Snowpack Observation Skin track, ski pen 10-15cm, ski pole pen 110cm Wind scouring on ridge by Donner Rim trail Public
02/17/2019 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation ECTN on a sheltered NE facing slope in below treeline terrain. Small skier-triggered cracking on a steep wind-loaded test slope Refrigerator sized cornice dropped onto a wind-loaded test slope with no results. Large cornices looming over heavily wind-loaded slopes. Some mostly buried debris is barely visible on the slope below the largest cornice. Forecaster
02/17/2019 - 12:00 South Camp Peak East Shore Area Snowpack Observation Professional Observer
02/17/2019 - 10:45 Incline Lake Peak Mount Rose Area Snowpack Observation Public
02/16/2019 - 22:00 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Graupel was very widespread at Powerhouse this afternoon. Near the summit a fully extended pole could easily be buried up to the handle. Stormy day with strong winds near the ridges. Professional Observer
02/16/2019 - 14:15 Schallenberger ridge Donner Summit Area Snowpack Observation Public
02/16/2019 - 12:00 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
02/16/2019 - 12:00 Blue Lakes Rd Snowpack Observation Professional Observer
02/16/2019 - 12:00 Rubicon Peak West Shore Area Snowpack Observation Strong SW winds with intense snow transport provided blizzard conditions near the summit. Skin track refill was quick in below treeline terrain. Forecaster
02/16/2019 - 10:30 Incline Peak Mount Rose Area Avalanche Observation Public
02/15/2019 - 14:45 Old Lincoln road. Donner Summit Area Snowpack Observation Public
02/15/2019 - 12:00 Little Truckee Summit Independence Lake Area Snowpack Observation Small wind slab avalanche intentionally triggered. Storm snow weakness around 1' deep with cracks on low angle terrain. Small wind slabs kicked off wind loaded ridgeline. HS=310cm.  Rain layer with rain crust forming on top.  Storm snow up to 3' in wind protected areas. Forecaster
02/14/2019 - 17:30 Round hill Mount Rose Area Snowpack Observation Rain runnels Small roller balls Open water griff creek Public
02/14/2019 - 13:15 Grouse rock Blackwood Canyon or Ward Canyon Area Snowpack Observation Rain runnels / S5 snowfall 15cm of new snow on top of rain crust/rain saturated snow grains Skin track filled in after 45 mintues Guide
Tahoe Mountain School


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