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 Videos Observation made by
01/15/2016 - 12:00 Donner Pass Donner Summit Area Avalanche Observation
Public
03/07/2016 - 12:00 Above the Skiers left trees in Dead tree bowl Carson Pass Area Avalanche Observation , , , , , , , , , , Public
04/09/2017 - 12:00 Polaris Bowl Avalanche Observation
Public
03/14/2016 - 09:00 North Side Castle Peak Donner Summit Area Avalanche Observation
Forecaster
11/16/2017 - 09:00 Hourglass Bowl Mount Rose Area Avalanche Observation
Forecaster
12/10/2016 - 17:00 Elephants Back Carson Pass Area Avalanche Observation
Looking down on the slide from the bench.
Looking up and slightly south from the bench.
Many refrigerator blocks of strong cohesive snow where present in the debris. This block travelled approximated 200 feet.
Three different crown step down features present here. Snow was blowing in and about a foot of wind drifted snow makes the lowest crown appear smaller than it was.
Excavating the lowest crown. The base of this was ice and ground with facets present.
The toe of the debris pile from the side.
Looking up at the slide.
Professional Observer
12/16/2016 - 00:30 Tamarack Peak Mount Rose Area Avalanche Observation
Panorama looking down the avalanche.
A crack on the ridge that ran the length of the avalanche.
The debris
 Mostly filled in crown and cornices.
Forecaster
01/06/2017 - 14:33 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Shooting cracks
Slope step down
Public
02/20/2017 - 10:50 Andesite Peak Donner Summit Area Avalanche Observation
Initial cracks triggered by kicking on the upper part of slope which caused the avalanche down lower at the mid slope convexity.
Initial cracks triggered by kicking on the upper part of slope which caused the avalanche down lower at the mid slope convexity.
The small avalanche in which skier was caught.
Red lines over crown of lower avalanche that occurred before ski pole drop. Green line over crown of small avalanche that carried skier.
Skier with deployed airbag after being carried 200 vertical feet by small avalanche, no burial.
Forecaster
02/27/2017 - 10:00 Peak 9269' SE Aspect West Shore Area Avalanche Observation
Public
02/18/2016 - 06:00 Jake's Peak West Shore Area Avalanche Observation
Public
12/13/2015 - 11:00 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Forecaster
01/19/2017 - 14:30 Tram Ridge / Shirley canyon Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Skier triggered storm slab avalanche_20170119
Guide
Alpenglow Expeditions
01/02/2016 - 10:15 Carpenter Ridge Independence Lake Area Avalanche Observation
Forecaster
02/18/2017 - 11:00 National Geographic Bowl, Granite Chief Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
Cornice drop and resulting wind slab avalanche
Larger storm slab avalanche
Example of shooting crack and crown near flank
Guide
Alpenglow Expeditions

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