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 button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
12/03/2019 - 14:00 Red Lake peak Trailhead Carson Pass Area Snowpack Observation CT RP results Layer ID Snow bombs Sky cover Guide
Alpine Skills International (ASI)
01/30/2020 - 15:00 Donner Pass Donner Summit Area Avalanche Observation Guide
Tahoe Mountain School
01/21/2020 - 15:00 Donner Ridge Donner Summit Area Snowpack Observation , , , Guide
Alpenglow Expeditions
01/05/2020 - 12:00 Mt Judah Donner Summit Area Snowpack Observation Guide
Alpenglow Expeditions
01/15/2020 - 12:30 West of Quail Face West Shore Area Snowpack Observation Guide
NORTH AMERICAN SKI TRAINING AND CLIMBING
03/19/2020 - 12:00 Fireplug/Tamarack Mount Rose Area Avalanche Observation crown shooting cracks Guide
Alpenglow Expeditions
01/18/2020 - 13:00 Castle/Andesite Peak Donner Summit Area Snowpack Observation By 2:30pm, only very small roller balls off of rocks observed on the south face of Castle Peak Guide
Tahoe Mountain School
11/30/2019 - 13:30 Hour glass Mount Rose Area Snowpack Observation Guide
Alpine Skills International (ASI)
12/21/2019 - 11:45 Munchkins / East of Alpine meadows Five Lakes Area Snowpack Observation Right-side up snowpack @7800ft NE aspect Guide
Tahoe Mountain School
01/17/2020 - 11:00 Deep Creek ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Alpenglow Expeditions
01/20/2020 - 12:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Roller balls on NE aspect @ 6500' Guide
Alpenglow Expeditions
03/25/2020 - 15:30 Tallac east Ridge Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Guide
Alpine Skills International (ASI)
01/30/2020 - 13:30 Desolation wilderness Desolation Wilderness Area (including Emerald Bay) Avalanche Observation D1 natural Wet loose 1st natural indicator 10:00 am    D0.5 wet loose Guide
Alpine Skills International (ASI)
12/15/2019 - 12:00 Twin Peaks Ridgeline Blackwood Canyon or Ward Canyon Area Avalanche Observation Professional Observer
04/10/2020 - 12:00 Red Lake Peak Carson Pass Area Snowpack Observation Professional Observer

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