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
04/10/2017 - 12:00 Incline Lake Peak Mount Rose Area Avalanche Observation
03/13/2016 - 12:00 Above Fontanillis Lake Desolation Wilderness Area (including Emerald Bay) Avalanche Observation
04/22/2017 - 12:30 Rose Knob, Third Creek Mount Rose Area Avalanche Observation
11/28/2017 - 07:22 Incline Peak Mount Rose Area Avalanche Observation
04/09/2016 - 12:00 Tamarack Peak Mount Rose Area Avalanche Observation Public
12/24/2016 - 11:10 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
This slide was triggered from this spot on the ridge above the slide. The lower angle slope below me cracked but did not slide.
Overview of the slide, taken from between the trigger point and the crown.
Looking a the skiers left side of the crown from the middle of the avalanche. Note the firm bed surface (the 12/15 rain crust) and the thin darker line in the crown just above the rain crust at the bottom of the new snow - the near crust facets.
Skier's right side of the crown and flank as the slope become lower angle to the skier's right.
Looking down the path at the debris and terrain traps below.
Small skier triggered loose dry sluff and a shooting crack on a N-NE facing slope around 8000 ft.
01/04/2017 - 18:00 Secret Peak West Shore Area Avalanche Observation
01/04/2017 - 00:01 Rose Know Mount Rose Area Avalanche Observation Public
12/20/2015 - 12:05 Carpenter Ridge Northern Aspect Independence Lake Area Avalanche Observation Avalanche debris Carpenter Ridge
01/21/2017 - 13:20 Manzanita Bowl, Slide Mtn Mount Rose Area Avalanche Observation
Crossing couloir with slide below skier
Skiing debris field after controlled ski cut release
24" diameter tree avy damage from last storm cycle. Debris already buried
02/10/2017 - 21:00 Powderhouse Ridge Luther Pass Area (including Job and Freel) Avalanche Observation
Looking up towards the crown.
Looking down on the path and debris.
Looking across the crown.
Hand hardness of the crown down to the rain crust.
Professional Observer
02/16/2017 - 11:30 Andesite Peak Donner Summit Area Avalanche Observation
Split-board kicks triggered a refrigerator sized cornice failure onto the wind loaded test slope. This resulted in a 12-14 inch deep wind slab failure.
The other side of the wind slab that resulted from the cornice drop.
Wind slab cracking in an undercut wind-loaded slope
02/18/2017 - 14:55 Stevens Peak Area Luther Pass Area (including Job and Freel) Avalanche Observation Public
01/16/2016 - 18:00 Drifter Ridge Donner Summit Area Avalanche Observation
02/23/2017 - 13:00 SE chute abover lower angora lake Echo Summit Area Avalanche Observation


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