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
12/12/2018 - 12:30 South Ridge Houghton Mount Rose Area Snowpack Observation Public
12/12/2018 - 12:00 Elephant's Hump Carson Pass Area Snowpack Observation Newly formed pencil hard wind slabs at treeline. Widespread evidence of wind scouring. Elevated tracks on Elephants Back. Forecaster
12/11/2018 - 12:45 Tamarack Peak Mount Rose Area Snowpack Observation Heavy Traffic in the Hourglass Evidence of wind transport and loading in Broken Glass Thin snow cover (40cm) w vegetation showing and sun affected on SE aspect Public
12/11/2018 - 12:00 Carpenter Ridge Independence Lake Area Snowpack Observation Small wind slab at treeline on NE aspect. Unconsolidated snow along the ridgetop, still available for future wind transport. Forecaster
12/11/2018 - 12:00 Thunder Mountain Carson Pass Area Snowpack Observation Professional Observer
12/10/2018 - 12:00 Becker Peak Echo Summit Area Snowpack Observation Professional Observer
12/10/2018 - 11:45 N End of Janine's Ridge Desolation Wilderness Area (including Emerald Bay) Snowpack Observation 5cm Windslab Public
12/10/2018 - 11:00 Relay Peak Mount Rose Area Snowpack Observation Small snow squall moving into the area. Small cornice piece dropped onto a test slope with no results. Forecaster
12/10/2018 - 11:00 Maggie's Peak Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Open area at 8400 feet on ridge between Maggie's Peaks showing NSFs but no Surface Hoar. Professional Observer
12/09/2018 - 14:00 Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Forecaster
12/09/2018 - 13:15 E of Boreal ski area Donner Summit Area Snowpack Observation Educator
12/09/2018 - 12:00 Castle - Basin Peak Area Donner Summit Area Snowpack Observation Wind slab failure on buried surface hoar on a wind-loaded test slope. Shooting cracks triggered by a ski cut on a near treeline wind-loaded test slope. This slab failed on buried surface hoar. Large surface hoar on the snow surface in a sheltered area , Forecaster
12/09/2018 - 12:00 East Ridge Tamarack Peak Mount Rose Area Snowpack Observation Surface hoar failing on an artificially loaded PST. Crusts on windward slopes preventing wind transport of snow with moderate SW winds. Windward SE-S-SW aspects have limited snow in this area. Forecaster
12/09/2018 - 11:45 Castle Peak Donner Summit Area Snowpack Observation Outlined areas show observed wide spread surface hoar growth of >3mm Educator
12/08/2018 - 14:15 Johnson Canyon Donner Summit Area Snowpack Observation Visual outline of the snowpack on NE Aspect @ 7300' 2-4mm Surface Hoar, these grains seemed to have some sort of icey deposit on them Side profile of current Surface Hoar Cornice cuts produced small loose dry avalanches Educator

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