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
02/12/2017 - 11:30 Main bowl of Rose Knob Peak East Shore Area Avalanche Observation Public
02/19/2017 - 13:41 Just off ridge talking mountain Echo Summit Area Avalanche Observation Public
01/16/2016 - 12:00 Andesite Ridge Donner Summit Area Avalanche Observation Public
01/17/2016 - 23:30 Crater Lake Road Carson Pass Area Avalanche Observation
Professional Observer
03/01/2017 - 14:00 above buck lake West Shore Area Avalanche Observation wind loaded slab wind loaded slabs Public
01/29/2016 - 22:43 Negro Canyon Donner Summit Area Avalanche Observation
Public
03/14/2017 - 13:00 West Ridge of Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Avalanche Observation
Loose wet avalanche size D1.5-D2 triggered by natural cornice collapse.
Forecaster
03/15/2016 - 13:00 Donner Peak Donner Summit Area Avalanche Observation
Guide
Tahoe Mountain School
11/11/2015 - 11:00 NE slope of Elephant's Back Carson Pass Area Avalanche Observation
Public
01/03/2017 - 13:25 rose knob Mount Rose Area Avalanche Observation Public
01/21/2017 - 13:05 Lower Manzanita Bowl Mount Rose Area Avalanche Observation
Storm slab on side loaded small ridge top. Search and Rescue in background
Public
01/25/2017 - 13:02 Porcupine Ridge East Shore Area Avalanche Observation
Public
02/05/2017 - 09:00 Jakes Peak Desolation Wilderness Area (including Emerald Bay) Avalanche Observation
Public
02/11/2017 - 11:00 Davis Creek Main Stem Mount Rose Area Avalanche Observation
The starting zone is behind skier and along side loaded ridge. Crown was covered by later wind loading
As the original slab loaded steep sided ravine below it morphed into a wet slide that scoured down to old snow bed surface
After dropping approximately 500 feet vert the wet slide scoured deeper leaving luge runs made of clear rink ice
After running a 1000+ vert feet some debris was left behind in the less steep areas
The person in this photo gives the reader an idea of the immensity and power of this slide
At a curve in the ravine the slide cut down to bare ground on the outside of the turn
The deposition at the bottom left 10 foot scoured walls and an acre of debris
Skiers give the slide a little more perspective
Public
02/18/2017 - 03:30 Frog Lake Ridge above Red lake Carson Pass Area Avalanche Observation
Crown and bed surface
Skier with debris field.
Public

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