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
02/15/2019 - 14:45 Old Lincoln road. Donner Summit Area Snowpack Observation Public
11/24/2018 - 12:00 Castle Peak Donner Summit Area Snowpack Observation Pooling water along the Castle Valley Road from 7200-7800' Rain runnels with wet snow to the ground below 7800' Rain crust up to peak at 9100'. Forecaster
12/01/2018 - 14:15 Johnston Canyon Donner Summit Area Snowpack Observation Educator
Tahoe Mountain School
12/05/2018 - 12:30 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Public
12/10/2018 - 12:00 Becker Peak Echo Summit Area Snowpack Observation Professional Observer
12/14/2018 - 11:00 Approach to Meiss Carson Pass Area Snowpack Observation Professional Observer
12/18/2018 - 13:00 Mt. Judah Donner Summit Area Avalanche Observation These wind slab avalanches along Mt. Judah were thought to have occurred mid morning. Shooting cracks in wind loaded terrain on small test slopes at lower elevation. Skier triggered reactive windslabs along Wildflower Ridge. Multiple natural wind slab avalanches along the East Face of Mt. Judah.  All D1 in size. Wind slab avalanches along Mt. Judah were up to 1-2' deep, but did not extend very far downslope. Forecaster
12/22/2018 - 15:00 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Alpenglow Expeditions
12/27/2018 - 13:00 Trimmer Bonus Luther Pass Area (including Job and Freel) Snowpack Observation Professional Observer
01/04/2019 - 12:00 Rubicon Peak West Shore Area Snowpack Observation Professional Observer
01/08/2019 - 10:00 Mt Rose Mount Rose Area Avalanche Observation Public
01/10/2019 - 12:00 Talking Mt. Echo Summit Area Snowpack Observation Lovely day in the on the ridge. Warm in the sun, but well below freezing in the shade. The new snow was mostly uncohesive, but did show a little slab characteristics. Cornice break in response to a wicked splitboard kick. This is what our PSTs looked like after we completed the tests, almost the same as when we started. Professional Observer
01/14/2019 - 10:15 Chief Creek drainage Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Large surface hoar Guide
Alpenglow Expeditions
01/15/2019 - 14:15 Munchkins East Bowl Snowpack Observation

Munchkins Zone Storm Instability 1/15/19

Public
01/18/2019 - 10:15 Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Minor wind slab cracking Large cornice drop, no slab failure Early stage settlement ring Roller Balls Profile Guide
Alpenglow Expeditions

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