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 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
01/31/2016 - 12:26 Top of Jake's Peak Avalanche Observation Public
02/18/2016 - 06:00 Jake's Peak West Shore Area Avalanche Observation
03/28/2017 - 12:50 Third Creek Drainage/Jennifer Street Mount Rose Area Avalanche Observation
View down from near the trigger point.
04/09/2017 - 08:30 North Side Independence Lake Area Avalanche Observation
04/14/2017 - 14:30 Emigrant Lake accessed from Kirkwood Avalanche Observation Public
03/14/2016 - 09:00 Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Avalanche Observation
04/15/2016 - 12:10 Castle Peak Donner Summit Area Avalanche Observation
12/16/2016 - 07:00 Bronco Chutes Mount Rose Area Avalanche Observation
Looking up at several crowns that likely happened on 12/16 at the end of the recent storm.
A closer look at some of those crowns.
12/24/2016 - 13:11 East Face Andesite Peak Donner Summit Area Avalanche Observation
01/24/2018 - 23:30 Lake of the Woods. Independence Lake Area Avalanche Observation
Digging into the crown to look at the faceted failure layer.
Subtle line of mostly filled in crown visible ~ 10 ft down slope of person in photo.
Looking down the avalanche path.
01/04/2017 - 16:00 Jakes Peak West Shore Area Avalanche Observation
Deep Slab at 8600' below treeline terrain.
Bed surface with some debris
Looking down part of avalanche path.
5' of recent storm snow on top of 12/15 rain crust and NCF's.
12/15/2015 - 10:30 Incline Lake Peak Mount Rose Area Avalanche Observation
02/07/2017 - 08:30 Andesite Ridge Donner Summit Area Avalanche Observation
Crown from wet slab avalanche triggered by natural cornice collapse.
Cornice and avalanche debris.
Older wet slab avalanches on NE-E aspects. These were widespread in the area.
01/14/2016 - 11:30 Top of Negro Canyon Donner Summit Area Avalanche Observation
Alpenglow Expeditions
03/31/2017 - 13:50 Relay peak Mount Rose Area Avalanche Observation


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