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 button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
01/26/2020 - 14:00 Bear Meadows Independence Lake Area Avalanche Observation Public
04/21/2020 - 12:00 East side Ralston Pk, Desolation Wilderness Echo Summit Area Avalanche Observation Public
12/08/2019 - 12:30 Chickadee and south Mount Rose Area Snowpack Observation Public
01/18/2020 - 10:00 Castle Peak Donner Summit Area Avalanche Observation Red tracks the party before us, Green our tracks also where a large whumpf was triggered. Small windslab avalanche triggered by a cornice drop. Alternate view of the slide showing where the cornice easily broke with a single kick Public
12/27/2019 - 12:45 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
03/22/2020 - 11:00 powder house Luther Pass Area (including Job and Freel) Avalanche Observation about 400-500 ft below crown Public
03/01/2020 - 11:00 Deep creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Two crowns from single ski cut.   Release occured from above skier (near,) and below (far.). Slide path Wind effect on cornice at end of ski cut. Public
04/11/2020 - 09:30 Red Lake Peak Carson Pass Area Snowpack Observation Public
01/19/2020 - 14:15 White Rock Lake Area Independence Lake Area Snowpack Observation Test slope picture Public
03/27/2020 - 12:30 Past Silver Peak Into the Granite Chief/Shirley Drainage Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
03/08/2020 - 09:00 Tragedy springs Snowpack Observation Public
01/11/2020 - 12:30 Wild flower Ridge Donner Summit Area Snowpack Observation Public
03/14/2020 - 14:30 Contention Ridge Donner Summit Area Avalanche Observation Crown Crown Public
12/01/2019 - 10:00 West Grouse Blackwood Canyon or Ward Canyon Area Snowpack Observation Public
03/28/2020 - 11:30 Tallac Summit Snowfield Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Public


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