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 http://www.snowpilot.org/. 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
12/11/2019 - 12:00 Winnemucca Lake Carson Pass Area Snowpack Observation Professional Observer
12/13/2019 - 05:00 The Grill (aka Toms Valley) Independence Lake Area Avalanche Observation A mix of recent loose wet avalanches and day or two old wind slab avalanches. Pit location, open below treeline terrain. Forecaster
12/13/2019 - 10:00 Frog Lake Ridge Carson Pass Area Snowpack Observation Professional Observer
12/13/2019 - 12:00 Incline Lake Peak Mount Rose Area Snowpack Observation Cracking in a new 6 inch think wind slab at midday. More wind slab cracking at midday. Forecaster
12/14/2019 - 11:45 Hidden Peak West Shore Area Snowpack Observation Dense wind affected new snow near the summit with minimal ski penetration. Poor conditions at 6,600'. Improving conditions at 7,100'. Good coverage at 7,500'. Dec 12 rain crust on summit ridge exposed by wind scouring. Dec 12 rain crust in the snowpit at 9,100'. Forecaster
12/14/2019 - 12:00 Incline Lake Peak Mount Rose Area Snowpack Observation planar fracture below 2 ft of snow Public
12/14/2019 - 13:15 Andesite peak Donner Summit Area Snowpack Observation Educator
Tahoe Mountain School
12/15/2019 - 02:30 Red Lake Peak Carson Pass Area Snowpack Observation small mid slope slide signs of wind transport signs of rain crust on plants? signs of rain crust on rocks? Public
12/15/2019 - 11:00 Incline Peak and Lake Mount Rose Area Snowpack Observation Incline Lake and Peak, Photo: J. Tarricone Public
12/15/2019 - 11:30 Picketts Peak Woodfords Canyon Snowpack Observation Public
12/15/2019 - 12:00 Meiss Headwaters Carson Pass Area Snowpack Observation Professional Observer
12/15/2019 - 12:00 Twin Peaks Ridgeline Blackwood Canyon or Ward Canyon Area Avalanche Observation Professional Observer
12/15/2019 - 12:00 Stevens Peak Carson Pass Area Snowpack Observation wind effected snow below ridgelines wind effected snow Public
12/15/2019 - 12:30 Slab Cliffs Mount Rose Area Snowpack Observation Wind scouring and texture on near and above treeline terrain. Wind scouring on shaded NW aspects near treeline. Small cornice kicks did not show any signs of propagation. Forecaster
12/15/2019 - 13:00 Fireplug Mount Rose Area Snowpack Observation N 8900' HS145cm HN15cm ECTX Fist to 4F to 1F Minor cracking Public

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