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
04/13/2017 - 16:00 Bowl north of Echo Peak Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public
12/24/2016 - 11:15 Lowest open pitch lookers right of traditional skin track Blackwood Canyon or Ward Canyon Area Avalanche Observation
01/05/2017 - 11:00 Fireplug Mount Rose Area Avalanche Observation
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.
01/08/2017 - 08:00 Elephants Hump Carson Pass Area Avalanche Observation
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.
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.
02/02/2017 - 11:00 Andesite Peak Donner Summit Area Avalanche Observation
Storm Slab.  4'' deep, 7900', NE aspect.
Debris from storm slab (D1).
Storm slab, 4'' deep, 7900', NE aspect.
Wind Slab, 4-8'' deep, 8100', E aspect, 38 degree slope.
01/03/2016 - 12:56 Silver Peak - North Ridge Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
01/06/2016 - 08:00 Far East Ridge of Tamarack Peak Mount Rose Area Avalanche Observation
01/14/2016 - 06:34 From TD Downhill area Outside of the Forecast Area Avalanche Observation Public
01/19/2016 - 10:00 West Fireplug Mount Rose Area Avalanche Observation
04/09/2017 - 12:00 Ginny Lake Mount Rose Area Avalanche Observation
11/16/2017 - 09:00 Hourglass bowl Mount Rose Area Avalanche Observation Public
11/27/2016 - 07:00 Castle Peak and Basin Peak Donner Summit Area Avalanche Observation Forecaster
01/03/2017 - 12:00 Andesite Peak Donner Summit Area Avalanche Observation
Natural wind slab avalanche
Shooting cracks in wind loaded terrain near natural avalanche.
01/04/2017 - 22:00 Castle Peak - north side Donner Summit Area Avalanche Observation Public


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