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 A video on how to download and use this program is available here. Please send us your observations using the buttons below.

Location 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
Tallac Corkscrew bowl, skiers left entry Desolation Wilderness Area (including Emerald Bay) Avalanche Observation 01/14/2016 - 13:00 This is the crown profile The crown from below, this shows about half the total crown I believe This is the debris field, the arrow marks where the snowboarder had ended up in the tree and was buried up to his waist.  His head and neck were above the snow the whole time, and had no injuries. This pit below the final ridge on the skin track, East facing, 33degrees 9000ft shows the weak layer which was very reactive CT3 for me and CT 13 for the one on the right.  Not sure if this is a new layer or if this is an older, seems like a new layer and the new storm snow/wind slab. Public
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/14/2016 - 12:00 Forecaster
Top of Negro Canyon Donner Summit Area Avalanche Observation 01/14/2016 - 11:30 Guide
Alpenglow Expeditions
East Ridge Tamarack Peak Mount Rose Area Snowpack Observation 01/14/2016 - 11:30 Forecaster
From TD Downhill area Outside of the Forecast Area Avalanche Observation 01/14/2016 - 06:34 Public
Frog Lake Carson Pass Area Snowpack Observation 01/14/2016 - 02:00 ECT at Frog Lake Wind effect on West aspect Raised ski tracks Public
North aspect near Tinker Knob Donner Summit Area Avalanche Observation 01/13/2016 - 23:31 Public
Ridge east of Tinker Knob Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/13/2016 - 12:35 Public
Bards Bowl Bear Valley Area Avalanche Observation 01/13/2016 - 11:30 Forecaster
Andesite Peak Donner Summit Area Avalanche Observation 01/13/2016 - 11:00 Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 01/13/2016 - 10:30 IMG 1577 Forecaster
Becker Ridge Echo Summit Area Snowpack Observation 01/13/2016 - 10:30 Cracking on ridge area wind loaded tree well. Professional Observer
Elephant's Hump Carson Pass Area Snowpack Observation 01/12/2016 - 16:45 Forecaster
West Grouse Blackwood Canyon or Ward Canyon Area Snowpack Observation 01/12/2016 - 12:00 Forecaster
W ridge Castle Pk Snowpack Observation 01/11/2016 - 12:30 Guide
Donner Summit Avalanche Seminars


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