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
03/22/2017 - 10:30 Hidden Peak West Shore Area Snowpack Observation Minimal new snow on top of very rough melt-freeze/rain crust below 7,500'. Ski pole probe through 4 inches of surface crust into deep, not refrozen wet snow.Ski cuts on typically wind loaded test slopes along the summit ridge produced only small loose dry activity. Poor light, difficult to see shallow debris in photo. Forecaster
02/27/2018 - 10:00 South side of Grouse Rock Blackwood Canyon or Ward Canyon Area Snowpack Observation Blowing snow just above treeline loading onto a W aspect. Skier triggered cracking of wind slab formed on Feb 26 (Monday) at treeline on a NE aspect. Skin track refill after ~1 hour. This was of interest due to the well below treeline location on a NE aspect. Forecaster
03/12/2016 - 13:30 Andesite Ridge Donner Summit Area Avalanche Observation
12/08/2015 - 12:30 Tamarack Peak Mount Rose Area Snowpack Observation Forecaster
04/11/2016 - 10:30 Donner Peak Donner Summit Area Snowpack Observation Forecaster
12/13/2016 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Snowpit at 9200'.  N-NW aspect.  Facets visible above basal ice.2-3mm facets at 9760'Surface rain crust below 9000' Forecaster
03/03/2018 - 12:30 Andesite Peak Donner Summit Area Snowpack Observation Small wind slab failure. Skin track refillafter 45 min by wind drifted snow on the summit of Andesite Pk. Forecaster
01/21/2017 - 10:20 Tamarack Peak Mount Rose Area Avalanche Observation
Wind slab avalanche triggered from the lower angle ridge on a N-NE aspect 38 degree slope.
Long shooting crack triggered by a ski kick on a wind loaded test slope
Another smaller wind slab triggered by a ski kick on a N facing wind loaded test slope
11/14/2016 - 01:30 Tamarack Peak Carson Pass Area Snowpack Observation Forecaster
04/18/2018 - 10:30 Rubicon Peak West Shore Area Snowpack Observation Increasing cloud cover and the approaching storm. Breakable crust was widespread on E-NE-N aspects at all elevations Graupel layer at the base of the recent snow. Forecaster
01/14/2018 - 13:30 East Ridge Tamarack Peak Mount Rose Area Snowpack Observation Forecaster
01/04/2017 - 17:00 Jakes Peak West Shore Area Avalanche Observation
Wind Slab Avalanche, 9100', NE aspect, 38 degrees.
01/27/2016 - 13:40 Rubicon West Shore Area Snowpack Observation Forecaster
11/15/2017 - 12:00 East Ridge of Relay Pk Mount Rose Area Snowpack Observation Snowpit location as noted on map. 15 in of total snow depth. Forecaster
03/20/2016 - 09:45 Rubicon Peak West Shore Area Snowpack Observation Forecaster


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