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
01/07/2019 - 14:00 Andesite Ridge Donner Summit Area Snowpack Observation Educator
Donner Summit Avalanche Seminars
02/05/2019 - 12:00 Sierra Crest above Bradley Hut Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Educator
Donner Summit Avalanche Seminars
01/06/2019 - 12:30 Tamarack Peak Mount Rose Area Snowpack Observation One of many easily triggered windslabs today Shooting cracks were common today Educator
Tahoe Mountain School
02/08/2019 - 13:00 Donner Summit Donner Summit Area Snowpack Observation Educator
Tahoe Mountain School
12/09/2018 - 13:15 E of Boreal ski area Donner Summit Area Snowpack Observation Educator
Donner Summit Avalanche Seminars
01/08/2019 - 15:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Educator
Alpenglow Expeditions
12/22/2018 - 15:00 Andesite Peak Donner Summit Area Snowpack Observation Educator
Tahoe Mountain School
12/16/2018 - 16:30 Below Tamarack Peak Mount Rose Area Snowpack Observation Educator
Tahoe Mountain School
12/08/2018 - 14:15 Johnson Canyon Donner Summit Area Snowpack Observation Visual outline of the snowpack on NE Aspect @ 7300' 2-4mm Surface Hoar, these grains seemed to have some sort of icey deposit on them Side profile of current Surface Hoar Cornice cuts produced small loose dry avalanches Educator
Tahoe Mountain School
12/30/2018 - 12:30 Tamarack Peak Mount Rose Area Snowpack Observation Exposed dirt and Knife hard sastrugi on Hour Glass Educator
Tahoe Mountain School
12/01/2018 - 14:15 Johnston Canyon Donner Summit Area Snowpack Observation Educator
Tahoe Mountain School
01/16/2019 - 01:30 Bottom of Waterhouse Luther Pass Area (including Job and Freel) Snowpack Observation Educator
Alpine Skills International (ASI)
01/13/2019 - 15:30 Donner Peak Donner Summit Area Snowpack Observation Educator
Tahoe Mountain School
02/07/2019 - 15:30 Echo Peak Echo Summit Area Avalanche Observation 6" crown, 30' wide, 50-70' run Runout Educator
Lake Tahoe Community College - Wilderness Education
12/29/2018 - 14:15 Andesite Peak Donner Summit Area Snowpack Observation Visual outline of the Snowpack on a West Aspect Near Treeline @ 7600' Educator
Tahoe Mountain School

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