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
03/19/2018 - 12:00 Tram Ridge Zone, Shirley Canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
02/14/2017 - 12:45 Deep Creek - East Ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
01/06/2017 - 12:30 Deep Creek Ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Top of the 12/15 rain crust.  Facets above and below.Faceted snow beneath 12/15 rain crust. Forecaster
12/19/2017 - 09:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Minimal snow coverage below 7500 ft.Scoured surfaces on exposed slopes in above treeline terrain.Near surface facets. Forecaster
02/02/2018 - 12:15 N. Ridge of Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation ECTP 29 SP @68 cm Educator
Tahoe Mountain School
01/04/2017 - 15:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Natural deep slab avalanche that reloaded. The newer looking debris is from dropping a small cornice onto the reloaded slope.
Natural deep slab avalanche that reloaded. The newer looking debris is from dropping a small cornice onto the reloaded slope.
The filled in crown of a natural wind slab / deep slab from along the ridge of Silver Peak at 8000 ft.
Debris from a natural wind slab / deep slab avalanche on a N aspect at 8000 ft. Note the size of the debris piled against the tree.
Forecaster
03/25/2018 - 11:15 Poulsens/Silver Ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Wind Slab failure Small Cornice drop with little slab propagation Guide
Alpenglow Expeditions
02/04/2017 - 14:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation ECTP 16 28cm below the surface at a density change between a dense heavy wind slab and softer storm snow2m long ECTN 16 on the same layer as the ECTPRain runnels and wet sticky snow existed on slopes below 7000 ft. Settlement cracks around a tree at 7500 ft. on a N aspect Forecaster
02/23/2018 - 12:30 top of NatGeo bowl Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Guide
Alpenglow Expeditions
12/29/2017 - 14:00 NE ridge of Granite Chief Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Weak, faceted snow under the slab.25cm thick slab sitting on top of Facets. Guide
Alpenglow Expeditions
01/26/2016 - 12:35 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Public
03/25/2017 - 13:00 NE slope, Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Public
12/19/2015 - 11:35 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
12/26/2015 - 12:30 South Ridge- Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Small, unstable wind loaded slab.Small, unstable wind loaded slab. Public
01/10/2017 - 15:00 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Overview of the slide
The climbers left flank
Another overview
Debris and knocked over trees.
Forecaster

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