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 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 by
Powderhouse Luther Pass Area (including Job and Freel) Avalanche Observation 01/10/2017 - 23:01 powderhouse slide hd Public
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation 01/10/2017 - 15:00 Overview of the slideThe climbers left flankAnother overviewDebris and knocked over trees. Forecaster
Below Coyote Rock Luther Pass Area (including Job and Freel) Snowpack Observation 01/10/2017 - 14:30 Cracking in fresh powder below 7000 feet in treed terrain. I remotely triggered the two small slopes from 30 feet away as I skinned by to investigate larger slide in background. This rock formation looks to have slid naturally within an hour or so of my visit. View of debris on a different aspect of formation. Professional Observer
Negro Canyon Donner Summit Area Avalanche Observation 01/10/2017 - 11:30 Intentially skier trigger wind slab on small test slopeWind slab failing within storm snow about 4-6'' above the old snow rain crust interface. Forecaster
east aspect 6837 Donner Summit Area Snowpack Observation 01/09/2017 - 14:30 Public
Hidden Peak West Shore Area Snowpack Observation 01/09/2017 - 12:00 Minor cracking of tiny wind slabs on summit of Hidden Pk. Pointing at the depth of non-refrozen wet snow all the way down to 120 cm. What was Dec 15 near crust facets, now moist from rain. Easily makes a snowball. Forecaster
Round Valley Bear Valley Area Snowpack Observation 01/09/2017 - 11:00 Public
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
East Ridge Tamarack Peak Mount Rose Area Avalanche Observation 01/07/2017 - 11:00 Large cornices with a collapsed section and wind slab avalanche below.Large cornices with a collapsed section and wind slab avalanche below.Debris below wind slabAnother cornice collapseFalse color image to show debris downslope. Forecaster
Right side of Tram Face Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation 01/07/2017 - 09:30 wet loose #1 Guide
Alpenglow Expeditions
Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation 01/06/2017 - 14:33 Slope step down Shooting cracks Public
Carson Pass Carson Pass Area Snowpack Observation 01/06/2017 - 14:30 Wind effected snow at ridge lines and saddles Graupel just below the surface. Well consolidated column from CT Public
Andesite Peak Donner Summit Area Snowpack Observation 01/06/2017 - 14:15 PST on Andesite Ridge Settlement crack Forecaster
Deep Creek Ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 01/06/2017 - 12:30 MVI 3374 Top of the 12/15 rain crust.  Facets above and below. Faceted snow beneath 12/15 rain crust. Forecaster
Herlan Peak Mount Rose Area Snowpack Observation 01/06/2017 - 09:10 Public


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