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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: http://www.americanavalancheassociation.org/pub_swag.php 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.

Location Region Observation Type Date and time of observation or avalanche occurrence Avalanche Photos Avalanche observation video Snowpack photos Snowpit or crown profile photo or graph Snowpit videos (tests, etc) Observation made by
Rubicon Peak West Shore Area Snowpack Observation 04/27/2012 - 10:50am Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 04/26/2012 - 10:50am Forecaster
Andesite Ridge Donner Summit Area Snowpack Observation 04/25/2012 - 11:00am Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 04/24/2012 - 11:00am
Professional Observer
Incline Lake Peak Mount Rose Area Snowpack Observation 04/23/2012 - 1:00pm
Forecaster
Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation 04/23/2012 - 9:30am Professional Observer
Donner Peak Donner Summit Area Snowpack Observation 04/22/2012 - 10:00am
Forecaster
Woodchuck Basin Bear Valley Area Snowpack Observation 04/21/2012 - 2:00pm Public
Tamarack Peak Mount Rose Area Snowpack Observation 04/21/2012 - 10:00am Forecaster
Rubicon Peak West Shore Area Snowpack Observation 04/20/2012 - 12:00pm Forecaster
Round Top Carson Pass Area Snowpack Observation 04/20/2012 - 11:00am Professional Observer
Tamarack Peak Mount Rose Area Snowpack Observation 04/19/2012 - 12:05pm
Forecaster
Castle Peak Donner Summit Area Snowpack Observation 04/19/2012 - 7:30am
Professional Observer
Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation 04/18/2012 - 10:00am
Professional Observer
Horse Canyon Bear Valley Area Snowpack Observation 04/17/2012 - 12:57pm Public
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The Sierra Avalanche Center is a non profit partnered with the Tahoe National Forest. Our operation depends on donations and fund raising events. Please consider making a tax deductible donation to the Sierra Avalanche Center. SAC's tax id number is 20-1963071. Thank you!