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 http://www.snowpilot.org/. 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
11/25/2015 - 13:45 Wildflower Ridge Donner Summit Area Snowpack Observation Forecaster
11/16/2017 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Skier triggered cracking on a wind-loaded test slope on an E aspect at 9700 ft. Forecaster
03/24/2018 - 11:00 Incline Lake Peak Mount Rose Area Snowpack Observation Large cornices along summit ridge. Note the cracked settlement cones on the trees. One of at least a half dozen storm slab avalanches that occurred in this area on March 22. Snowpit tests in the crown indicated that the weak layer was no longer reactive. Cracked settlement cone below treeline. Forecaster
01/27/2017 - 12:00 Andesite Ridge Donner Summit Area Snowpack Observation Wind transport and scouring along Andesite RidgeSkier triggered crack on a wind loaded W facing test slopeNatural cracking on a wind loaded W facing test slope Forecaster
03/22/2016 - 12:00 Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Forecaster
11/27/2016 - 07:00 Castle Peak and Basin Peak Donner Summit Area Avalanche Observation Forecaster
03/02/2016 - 13:30 Third Creek Mount Rose Area Snowpack Observation Forecaster
03/02/2018 - 20:00 Phipps Pk Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Forecaster
12/06/2015 - 12:30 Castle Peak Donner Summit Area Snowpack Observation Forecaster
12/03/2016 - 13:00 Ward Canyon Blackwood Canyon or Ward Canyon Area Snowpack Observation Forecaster
01/26/2018 - 12:00 Castle Pass and Andesite Ridge Donner Summit Area Snowpack Observation Ski cut on wind loaded test slope above treeline producing no signs of instability.Intentionally collapsing cornice pieces onto wind loaded slopes near the summit of Andesite Pk produced no slab failure, just entraining of loose dry snow. Forecaster
12/26/2016 - 11:00 Andesite Peak Donner Summit Area Snowpack Observation Forecaster
12/12/2015 - 15:00 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
02/08/2017 - 23:00 Tamarack Peak Mount Rose Area Snowpack Observation Settlement crack around a tree at 9000 ft. Small cornice pieces and ski kicks on wind loaded test slopes did not trigger cracking on the slopes. The cornice pieces just slide down on top of the slope.Rain runnels at 8900 ft. on a N aspect on Tamarack Peak. Forecaster
04/05/2016 - 11:30 Rubicon Peak West Shore Area Snowpack Observation Forecaster

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