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 http://www.snowpilot.org/. 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 Typesort descending 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
S side Ward Canyon Blackwood Canyon or Ward Canyon Area Avalanche Observation 12/24/2016 - 11:00 Guide
Donner Summit Avalanche Seminars
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
Grouse Rock Blackwood Canyon or Ward Canyon Area Avalanche Observation 11/27/2016 - 09:51 Guide
Alpenglow Expeditions
Powderhouse Luther Pass Area (including Job and Freel) Avalanche Observation 01/10/2017 - 23:01 powderhouse slide hd Public
Angora Echo Summit Area Avalanche Observation 02/19/2017 - 13:00 Public
Sugar Bowl/ Mt. Judah Donner Summit Area Avalanche Observation 12/18/2016 - 12:31 Guide
Alpenglow Expeditions
Andesite Peak Donner Summit Area Avalanche Observation 12/24/2016 - 11:30 MVI 3350 Forecaster
Jobs Peak (Jaws) Luther Pass Area (including Job and Freel) Avalanche Observation 01/15/2017 - 13:45 Public
Incline Lake Peak Mount Rose Area Avalanche Observation 01/21/2017 - 15:30 Crown of smaller test slopeSmall slide on test slope with 40+ deg slopeShooting  crack near summit that released when triggered with cornice drop Public
Upper Spencer's Lake Outside of the Forecast Area Avalanche Observation 02/05/2017 - 08:00 RunoutCrown Public
East Face of Judah Donner Summit Area Avalanche Observation 12/16/2016 - 12:30 Viewed from the top of Donner Peak Guide
Alpenglow Expeditions
Red Lake Peak Carson Pass Area Avalanche Observation 12/18/2016 - 12:00 Public
E judah Donner Summit Area Avalanche Observation 12/24/2016 - 13:45 Guide
Alpenglow Expeditions
Elephant's Hump Carson Pass Area Avalanche Observation 01/02/2017 - 12:20 Crown of the avalanche from near the trigger point on a lower angle slope with some small trees.Crown of the avalanche from near the trigger point on a lower angle slope with some small trees.Debris on the smaller flank of the avalanche. As it wraps around the corner the slope becomes larger and more open.Shooting cracks on a wind loaded slope triggered by a skier on the ridge. Forecaster
Negro Canyon Donner Summit Area Avalanche Observation 01/22/2017 - 11:20 Witnessed remote trigger wind slab avalanche/test slope failure from ridgetop (SE aspect, 6,880')..Small natural wind slab avalanche futher up ridge from remote trigger test slope failure (ESE aspect, 7,000').Signs of recent natural cornice collapse and subtle evidence of a mostly refilled crown line (NE aspect, 7,240')Rapid storm snow settlement at 6,500. Forecaster

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