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
03/15/2016 - 03:00 Below the Cornice in Polaris Bowl Luther Pass Area (including Job and Freel) Avalanche Observation
04/03/2016 - 12:30 Fireplug aka The Diamond Mount Rose Area Avalanche Observation
12/13/2017 - 15:27 Castle Peak Donner Summit Area Avalanche Observation
11/27/2016 - 07:00 Andesite Ridge Donner Summit Area Avalanche Observation Guide
Tahoe Mountain School
12/10/2016 - 10:18 Mt. Rose Chutes - CLOSED AREA Mount Rose Area Avalanche Observation
Starting zone on the upper avalanche path after the afternoon avalanche release. This is a mix of the morning and afternoon crowns. Note how the crown steps down into different layers.
Closeup of the crown.
Overview of the upper starting zone
Smaller avalanche from the afternoon in an adjacent path.
Close up of the small crown in the lower adjacent path
Looking down the slope to the debris pile.
Looking up from the debris. Photo by Andrew Pinkham
The confluence of debris where the skier was found. The person is standing next to the burial location.
Standing in the hole where the skier was buried. He was buried prone in the area at my feet.
01/06/2018 - 06:00 Twin Peaks Blackwood Canyon or Ward Canyon Area Avalanche Observation Public
12/13/2015 - 11:00 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
01/19/2017 - 14:30 Tram Ridge / Shirley canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Skier triggered storm slab avalanche_20170119
Alpenglow Expeditions
01/02/2016 - 10:15 Carpenter Ridge Independence Lake Area Avalanche Observation
01/05/2016 - 12:00 Andesite Ridge Donner Summit Area Avalanche Observation
01/14/2016 - 06:34 From TD Downhill area Outside of the Forecast Area Avalanche Observation Public
01/19/2016 - 12:30 Andesite Peak Donner Summit Area Avalanche Observation
02/25/2017 - 12:30 National Geographic Bowl, Granite Chief Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Small skier triggered slab avalanche
Alpenglow Expeditions
04/10/2017 - 10:01 W of Winnemucca Lake Carson Pass Area Avalanche Observation
04/13/2017 - 16:00 Bowl north of Echo Peak Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public


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