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
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
Tamarack Peak Mount Rose Area Snowpack Observation 03/21/2017 - 10:30 6 inches of new snow at 9,400' at 10:00am. Very minor cracking on wind loaded test slope at noted lat/long (NE aspect at 9,800'). Repeatable ECTN results on 8 to 10 inch thick wind slab at noted lat/long, adjacent to minor cracking photo. Forecaster
South Gullies Mount Rose Area Snowpack Observation 03/20/2017 - 11:02 S aspects above 10k' did not soften due to gale force S winds at 11am. Small skier triggered loose wet activity within gully. Boot pen of 4-6'' at 8200', S aspect, at 11:30am. Forecaster
SE Gully on Waterhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation 03/20/2017 - 09:00 At 8:30am, around 7200 feet on partially treed SE slope, the snow surface was soft and unfrozen. At 9:45am, around 8400 feet on an open SE slope, the snow surface was soft and a pole handle could easily penetrate about 20 cms. At 10:00am, around 9000 feet on open SE slope, the snow was cold and supportive due to consistent wind. A few trashcan size chunks of cornice appear to have broken off in the last day or two. Professional Observer
Genoa Peak East Shore Area Snowpack Observation 03/19/2017 - 14:00 Professional Observer
Negro Canyon Donner Summit Area Snowpack Observation 03/19/2017 - 12:30 SW aspect, warm temperatures,  wet, unsupportable snow Recent cornice fall, on E aspect at 7100' Guide
Tahoe Mountain School
Stevens Peak Carson Pass Area Snowpack Observation 03/19/2017 - 11:30 4 inches of snow surface refreeze on open slopes above 8,000'. Very supportable conditions at 11:15 am on SE aspect above 8,000'. Slightly increase depth of wet snow at noon on SE aspect above 8,000', but still very supportable. Intertionally skier triggered small loose wet avalanche on SE aspect at 8,200' at 12:15pm. Same small loose wet avalanche in previous photo. Forecaster


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