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
01/23/2016 - 14:00 Donner Pass Donner Summit Area Snowpack Observation Guide
Tahoe Mountain School
01/23/2016 - 15:00 Castle Valley Donner Summit Area Snowpack Observation Public
01/23/2016 - 17:00 Crater Lake Bowl Carson Pass Area Avalanche Observation
Professional Observer
01/24/2016 - 08:21 Kirkwood Nordic Face Carson Pass Area Snowpack Observation

Snow Pit 1/25/16

01/24/2016 - 09:00 Trimmer Peak Luther Pass Area (including Job and Freel) Snowpack Observation Public
01/24/2016 - 11:30 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
01/24/2016 - 11:35 Silver Peak Snowpack Observation Forecaster
01/24/2016 - 11:55 Corkscrew trees Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Grapple at 7000'Surface hoar at 9000' Public
01/24/2016 - 13:15 Mt. Baldy, north shore Lake Tahoe Snowpack Observation Public
01/24/2016 - 14:45 Andesite Peak Donner Summit Area Avalanche Observation Test slope failure on Andesite Peak Educator
Tahoe Mountain School
01/25/2016 - 10:30 Incline peak, multiple aspects and elevations Mount Rose Area Snowpack Observation Public
01/25/2016 - 12:00 Talking Mountain Echo Summit Area Snowpack Observation Forecaster
01/26/2016 - 12:35 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
01/26/2016 - 13:00 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
01/26/2016 - 13:00 Stanford Rocks Blackwood Canyon or Ward Canyon Area Snowpack Observation Forecaster


Subscribe to Central Sierra Nevada / Lake Tahoe Snowpack, Weather, and Avalanche Observations for California and Nevada from SAC