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 button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
03/20/2020 - 08:00 On the skin track and near the ridge on Stanford Rock. Upper end of the canyon, not the lower stuff. Blackwood Canyon or Ward Canyon Area Snowpack Observation Public
03/19/2020 - 13:00 Incline Peak/Slab Cliffs Mount Rose Area Snowpack Observation A good 2 feet of snow on the ridgetops available for drifting with the next moderate or stronger wind event. Developing sun crust in the early afternoon on solar aspects. Skier/snowboarder triggered hybrid loose wet/dry on SE aspect Incline Peak. Forecaster
03/19/2020 - 12:00 Andesite Peak Donner Summit Area Avalanche Observation Partially covered avalanche crown. Partially covered right flank. Avalanche debris ran downslope through the first set of trees. Forecaster
03/19/2020 - 12:00 Fireplug/Tamarack Mount Rose Area Avalanche Observation crown shooting cracks Guide
Alpenglow Expeditions
03/19/2020 - 12:00 Herlan Peak East Shore Area Snowpack Observation Dropping into Bear Claw Chute Public
03/19/2020 - 12:00 Ebbetts Pass Ebbetts Pass Area Avalanche Observation Professional Observer
03/19/2020 - 10:30 Ralston Cirque Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public
03/19/2020 - 10:00 Donner Summit Donner Summit Area Avalanche Observation sheltered  N aspect small surface hoar and settlement ring settlement cracking moderate to large cornice with widespread sloughing beneath skier triggered mid slope D1 release on NE aspect two side by side skier triggered D1 releases NE aspect afternoon rollerballs at lower elevations Public
03/19/2020 - 09:45 Tamarack peak east side Mount Rose Area Snowpack Observation

2020-03-19 Tamarack Snowpit Compression Test

03/19/2020 - 06:00 South slopes of Tamarack Mount Rose Area Snowpack Observation Public
03/18/2020 - 17:30 South East of Scott Peak West Shore Area Snowpack Observation Public
03/18/2020 - 15:00 Incline Peak Mount Rose Area Avalanche Observation Public
03/18/2020 - 14:00 North Ridge of Echo Peak Echo Summit Area Snowpack Observation Public
03/18/2020 - 12:45 Frog Lake Carson Pass Area Snowpack Observation Unconsolidated powder on a sheltered north slope. This east facing cornice broke wider than I expected (and wider than I could capture with this photo). Clouds moved in and out most of the day. The top of that property is 340 cms. I measured up to 360 cms of snow in this location. PST 60/160 END down 150 There's a ton of snow on top of this weak layer, but it's still sugar. Professional Observer
03/18/2020 - 12:00 Incline Lake Peak Mount Rose Area Snowpack Observation Large cornices near the top of Incline Lake Peak Cracking on a small wind-loaded slope near the ridge Snowy weather and limited visibility during the tour. Forecaster


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