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. This program is available as a free download at http://www.snowpilot.org/. A video on how to download and use this program is available here. Please send us your observations using the buttons below.

Locationsort descending Region Observation Type Date and time of observation or avalanche occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made by
1 km W of Castle Peak Donner Summit Area Snowpack Observation 12/19/2016 - 13:00 Educator
Donner Summit Avalanche Seminars
1/2 way up Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation 02/16/2017 - 13:17 Powderhouse CTPowderhouseECT Wandering crust below 70cm Rain Crust Slope angle Rain Crust @70cm from top Pit aspect and coordinates Slope where snowpit was dug (past dead tree in pic) Public
3rd drainage north of "Peak 9614", S of Monument Peak Outside of the Forecast Area Snowpack Observation 01/27/2017 - 16:00 Variable wind affected & consolidated powder looking S at ridge Debris field looking back up drainage skied. Public
above buck lake West Shore Area Avalanche Observation 03/01/2017 - 14:00 wind loaded slab wind loaded slabs Public
above China Wall Donner Summit Area Snowpack Observation 12/03/2016 - 14:00 Guide
Tahoe Mountain School
Above Crater lake, Red Lake Pk Carson Pass Area Avalanche Observation 12/27/2016 - 23:30 The snow on bed where failure occured. Public
above old ASI Donner Summit Area Snowpack Observation 12/28/2016 - 15:00 Guide
Alpenglow Expeditions
Alhambra Mine Carson Pass Area Snowpack Observation 12/09/2016 - 12:00 Running water at approximately 8800 feet near Stevens Peak. Rime or snow dusting southwest aspect of Stevens Peak. Approximately 3mm striated facets at base of snowpack in this location. Professional Observer
Anderson Ridge Donner Summit Area Snowpack Observation 12/18/2016 - 11:57 running water down low 90cm HS 15cm fluff w thick ice layer boiler plate with blown in fluff and east winds up high undisturbed fluff on hard crust, some hoar in sheltered areas Public
Andesite Peak Snowpack Observation 11/23/2016 - 10:30 Public
Andesite Peak Donner Summit Area Snowpack Observation 12/16/2016 - 12:30 Small localized cracking in wind loaded terrain.  E aspect 8200' Small cornice kicks did not cause any wind slab failure.  8200', E aspect. ECTN and ECTP in wind loaded E aspect.  8200'. Cracking around skis into non frozen rain crust Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 12/18/2016 - 14:00 NE wind scouring at 8200' Andesite Peak 4'' recent storm snow over firm rain crust.  Faceting occuring around recent rain crust. NE wind scouring at 8200' E aspect of peak. Guide
Tahoe Mountain School
Andesite Peak Donner Summit Area Snowpack Observation 02/05/2017 - 12:00 Guide
Tahoe Mountain School
Andesite Peak Donner Summit Area Snowpack Observation 02/13/2017 - 13:00 5mm surface hoar wet at 3pm. Professional Observer
Andesite Peak Donner Summit Area Avalanche Observation 02/20/2017 - 10:50 Initial cracks triggered by kicking on the upper part of slope which caused the avalanche down lower at the mid slope convexity.Initial cracks triggered by kicking on the upper part of slope which caused the avalanche down lower at the mid slope convexity.The small avalanche in which skier was caught.Red lines over crown of lower avalanche that occurred before ski pole drop. Green line over crown of small avalanche that carried skier.Skier with deployed airbag after being carried 200 vertical feet by small avalanche, no burial. Forecaster

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