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.

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
Talking Mountain/Becker Ridge Echo Summit Area Snowpack Observation 03/25/2017 - 16:00 Public
Negro Canyon Donner Summit Area Snowpack Observation 03/25/2017 - 14:00 Guide Tahoe Mountain School
Outside of boundary in Snow Valley Bear Valley Area Avalanche Observation 03/25/2017 - 13:22 Public
NE slope, Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation 03/25/2017 - 13:00 Public
Mt. Tallac-The Cross Desolation Wilderness Area (including Emerald Bay) Avalanche Observation 03/25/2017 - 12:30 Skier descending onto slope before avalanche.Looking down avalanche debris.Looking up avalanche debris towards crown.Part of the crown. Forecaster
Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation 03/25/2017 - 12:00 Rapid warming at 9am with full sun.  Loose wet activity occurring on E aspects. Previous wind slab activity from yesterday.  NE aspect, 9000'. Skier triggered loose wet activity, E aspect, 8400', at 11am. Skier triggered loose wet activity on NE aspect, 7500', at 11:15am. Forecaster
Cathedral Bowl Castle Peak Donner Summit Area Avalanche Observation 03/25/2017 - 11:30 Public
Incline Lake Peak Mount Rose Area Snowpack Observation 03/24/2017 - 11:30 Snow and wind starting in the morning hours. 3-5'' wind slabs formed off of summit ridge on N aspects. Forecaster
Elephant's Graveyard Carson Pass Area Snowpack Observation 03/23/2017 - 23:00 Professional Observer
Lower Davis Creek Mount Rose Area Avalanche Observation 03/23/2017 - 14:00 Looking up the slide path 1500 vertical feet. Looking down slide path 400 vertical feet Public
Bronco Chutes Mount Rose Area Snowpack Observation 03/23/2017 - 13:00 Public
Jakes Peak West Shore Area Snowpack Observation 03/23/2017 - 12:30 Natural loose wet activity on E-SE-S aspects at 10:30am. Loose dry sluffing off of summit-NE aspect, 9200', 38 degree slope. Intentionally skier triggered wet loose avalanche.  E aspect, 40 degree convexity, sliding on m/f crust. Skier triggered loose wet avalanche on E face of Jakes. Small loose wet skier triggered at 7600', NE aspect, on small test slope. Forecaster
Tamarack Peak Mount Rose Area Snowpack Observation 03/23/2017 - 11:30 Several inches of recent storm snow along the ridgetop and available for transport as winds increase ahead of next storm. Small loose dry activity intentionally skier triggered on N aspect, approx 40 deg slope angle. Loose wet activity intentionally skier triggered on SE aspect at 9,000' at 11:30 am. Forecaster
Tamarck Peak Mount Rose Area Snowpack Observation 03/22/2017 - 11:10 Program Manager
Hidden Peak West Shore Area Snowpack Observation 03/22/2017 - 10:30 Minimal new snow on top of very rough melt-freeze/rain crust below 7,500'. Ski pole probe through 4 inches of surface crust into deep, not refrozen wet snow. Ski cuts on typically wind loaded test slopes along the summit ridge produced only small loose dry activity. Poor light, difficult to see shallow debris in photo. Forecaster