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.

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 bysort descending
Andesite Peak Donner Summit Area Snowpack Observation 03/13/2017 - 10:10 Educator
Donner Summit Avalanche Seminars
1 km W of Castle Peak Donner Summit Area Snowpack Observation 12/19/2016 - 13:00 Educator
Donner Summit Avalanche Seminars
South Side Castle Peak Donner Summit Area Snowpack Observation 03/29/2017 - 11:30 Educator
Sierra Nevada College
Andesite Peak Donner Summit Area Snowpack Observation 02/24/2017 - 10:45 Educator
Donner Summit Avalanche Seminars
Donner Ridge Donner Summit Area Snowpack Observation 03/12/2017 - 10:05 Educator
Donner Summit Avalanche Seminars
South of Frog Lake Cliff Donner Summit Area Avalanche Observation 03/14/2017 - 10:15 Educator
Donner Summit Avalanche Seminars
Donner Ridge Donner Summit Area Snowpack Observation 02/25/2017 - 10:30 Educator
Donner Summit Avalanche Seminars
Negro Canyon Donner Summit Area Avalanche Observation 01/22/2017 - 11:20 Witnessed remote trigger wind slab avalanche/test slope failure from ridgetop (SE aspect, 6,880')..Small natural wind slab avalanche futher up ridge from remote trigger test slope failure (ESE aspect, 7,000').Signs of recent natural cornice collapse and subtle evidence of a mostly refilled crown line (NE aspect, 7,240')Rapid storm snow settlement at 6,500. Forecaster
Rubicon Peak West Shore Area Snowpack Observation 02/15/2017 - 11:00 Cloud cover over the northern portion of the forecast area at 10:30am. Heavier cloud cover approaching at 10:30am. Increasing colud cover over the southern portion of the forecast area, but less than to the north. Forecaster
Relay Peak Mount Rose Area Snowpack Observation 11/20/2016 - 11:30 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 04/04/2017 - 11:45 Deep holes down to flowing creeks 1 to 2 inches of corn snow on top of a supportable melt-freeze crust on a SW aspect at 8200 ft. around 11:45 am Ankle deep wet snow on a SW aspect around 7600 ft. around noon Widespread cloud cover looking south from Castle Peak around 11:40 am Sunny skies looking north from Castle Peak around 11:40 am Forecaster
Jakes Peak West Shore Area Snowpack Observation 01/05/2017 - 12:00 Rapid storm snow settlement. Cracking that went 5 feet deep to the Dec 15 near crust facet layer. Forecaster
Ophir Peak Mount Rose Area Snowpack Observation 12/22/2016 - 12:00 Forecaster
Donner Peak Donner Summit Area Snowpack Observation 02/03/2017 - 13:00 Wind slab cracking on an undercut test slope Shooting crack on a wind loaded test slope Forecaster
Red Lake Peak Carson Pass Area Snowpack Observation 12/03/2016 - 13:30 Forecaster

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