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
01/09/2019 - 13:15 Hidden Peak West Shore Area Snowpack Observation Forecaster
02/12/2019 - 12:00 Hidden Peak West Shore Area Snowpack Observation Strong winds were moving snow in below treeline areas Intense blowing snow and cornice formation near the summit of Hidden Peak Skier triggered cornice failure on a a test slope did not produce signs of instability in the wind slab on the test slope. Minor cracking down to the undercut part of the slope after repeated and aggressive ski kicks and jumps. Forecaster
01/06/2019 - 11:15 Hidden Peak Cirque West Shore Area Avalanche Observation Public
02/02/2019 - 13:00 Hope Valley Carson Pass Area Snowpack Observation Professional Observer
02/10/2019 - 08:00 Hope Valley & Waterhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
02/09/2019 - 12:00 Horse Meadow Luther Pass Area (including Job and Freel) Snowpack Observation Professional Observer
01/16/2019 - 11:00 Hwy. 89 North of Tahoe City Blackwood Canyon or Ward Canyon Area Avalanche Observation Forecaster
01/18/2019 - 13:00 Incline Lake Peak Mount Rose Area Snowpack Observation Small natural cornice failure with small wind slab avalanche. Large and fragile cornices along ridgeline. Pointing to buried surface hoar down 140cm from surface. Large surface hoar under the DT that failed.  Forecaster
01/15/2019 - 13:15 Incline lake peak Mount Rose Area Snowpack Observation Calm to light winds on Ridge North aspect unsupported convex test slope loose dry/sluff Very small loose dry on 40 degree east aspect Public
02/17/2019 - 10:45 Incline Lake Peak Mount Rose Area Snowpack Observation Public
12/20/2018 - 12:00 Incline Lake Peak Mount Rose Area Snowpack Observation Very small amounts of blowing snow observed on foreground ridge, just above the highest trees. Transport occurring only during gusts to 60 mph. Rose Knob Peak No signs of blowing snow with ridge wind avg 40 mph, gusts to 60 mph on nearby Slide sensor. Ridgeline to the NW of Incline Lake Peak. This is the maximum extent of any cracking we saw today in areas of wind slab. 1 cm of wind drifted snow in our skin track set 2 hours prior. Forecaster
01/16/2019 - 02:00 Incline Lake Peak Mount Rose Area Avalanche Observation Public
02/04/2019 - 12:30 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
01/07/2019 - 15:00 Incline Lake Peak Mount Rose Area Snowpack Observation Kicking at the uphill side of the skin track yielded storm slab cracking at 8,400 feet. ECTN12 20cm down at the bottom of the dense storm slab. N aspect at 9,100 feet. CT8 at the same storm slab layer as the ECTN. This compression test also broke CT24 Q2 at the top of the crust sandwich layer in the old snow Public
02/02/2019 - 11:30 Incline Lake Peak Mount Rose Area Avalanche Observation ECTN4 at 6cm down in the new snow. Shooting cracks along the summit. This crack broke within the new snow, not at the new old snow interface. Skier triggered avalanche. Bed surface was in the most recent snow. Public


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