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
1 km W of Castle Peak Donner Summit Area Snowpack Observation 12/19/2016 - 13:00 Educator
Donner Summit Avalanche Seminars
Lincoln Ridge Yuba Pass Area Snowpack Observation 11/29/2016 - 11:00 Forecaster
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 12/05/2016 - 11:45 20161205 Deep Creek ,CA PST 42/100 end Forecaster
Castle Peak Donner Summit Area Snowpack Observation 01/02/2017 - 10:45 One of many wind loaded/wind slab test slopes that avalanched with minimal human triggering. Forecaster
The Saddle - CLOSED AREA - Mt. Rose Mount Rose Area Snowpack Observation 12/11/2016 - 15:45 Facets and PST's on Slide Mountain Forecaster
Secret Peak West Shore Area Avalanche Observation 01/04/2017 - 18:00 Forecaster
Castle Peak Donner Summit Area Snowpack Observation 11/01/2016 - 11:15 Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 12/16/2016 - 13:00 PST END while isolating the column on Tamarack Peak PST that failed while isolating the column on the facet layer 160 below the surface ECTP 25 on a softer snow layer below yesterdays rain crust. Small 4-6 inch wind slab on a NE facing wind loaded test slope. Forecaster
Castle Peak Donner Summit Area Snowpack Observation 01/15/2017 - 14:00 10 to 20mm surface hoar in a meadow at ~7900 ft. 10 to 20mm surface hoar in a meadow at ~7900 ft. Wind scoured E facing slopes along Andesite Ridge Exposed ice crusts along the Castle Peak ridgeline Settlement cracks around trees. Inversion layer at about 7400-7800 ft. Forecaster
Andesite Peak Donner Summit Area Snowpack Observation 12/02/2016 - 12:00 Forecaster
Rubicon Peak West Shore Area Snowpack Observation 11/15/2016 - 12:20 Forecaster
Andesite Peak Donner Summit Area Avalanche Observation 12/24/2016 - 11:30 MVI 3350 Forecaster
Talking Mountain Echo Summit Area Snowpack Observation 12/31/2016 - 12:00 Coverage on North aspects along the ridge. Forecaster
Fireplug Mount Rose Area Avalanche Observation 01/05/2017 - 11:00 MVI 3373 Avalanche overview photo. Zoom in to see details.Crown line to 6 feet at lower left in overview photo.Lookin down to debris from crown line in far lower left of overview photo. Forecaster
Elephants Hump Carson Pass Area Avalanche Observation 01/08/2017 - 08:00 The larger avalanche in near treeline terrain.One of the below treeline wet deep slab avalanches. Another of the below treeline wet deep slab avalanches. Numerous wind slab and deep slab avalanches near Frog Lake. Forecaster

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