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
04/10/2017 - 11:00 Above winnimucca lake Carson Pass Area Avalanche Observation Public
12/09/2016 - 12:00 Alhambra Mine Carson Pass Area Snowpack Observation Running water at approximately 8800 feet near Stevens Peak.Rime or snow dusting southwest aspect of Stevens Peak.Approximately 3mm striated facets at base of snowpack in this location. Professional Observer
12/22/2017 - 11:00 Alhambra Mine gulch Carson Pass Area Snowpack Observation Variable conditions on a north east facing slopeOld crown below east facing ridgePit adjacent to old crownCrust on top of NSFs failed upon isolation or a single CT tapECTs didn't propagateSastrugi from previous east windIceMeiss Meadows Professional Observer
02/18/2016 - 07:05 Alpine Meadows Road Five Lakes Area Avalanche Observation Forecaster
01/29/2018 - 09:00 Anderson Peak Donner Summit Area Snowpack Observation Public
01/19/2018 - 15:30 Anderson ridge Donner Summit Area Snowpack Observation , , , Public
04/02/2016 - 10:00 Anderson Ridge Donner Summit Area Snowpack Observation Public
12/18/2016 - 11:57 Anderson Ridge Donner Summit Area Snowpack Observation running water down low90cm HS 15cm fluff w thick ice layerboiler plate with blown in fluff and east winds up highundisturbed fluff on hard crust, some hoar in sheltered areas Public
12/22/2017 - 12:30 Andesite Donner Summit Area Snowpack Observation Guide
Alpenglow Expeditions
01/23/2016 - 11:55 Andesite Meadows Donner Summit Area Snowpack Observation Forecaster
02/04/2017 - 14:00 Andesite Peak Donner Summit Area Snowpack Observation Clouds starting to break up after 3pm. Guide
Tahoe Mountain School
02/18/2017 - 14:21 Andesite Peak Donner Summit Area Snowpack Observation Public
12/26/2016 - 10:10 Andesite Peak Donner Summit Area Snowpack Observation Forecaster
03/13/2017 - 10:10 Andesite Peak Donner Summit Area Snowpack Observation Educator
Donner Summit Avalanche Seminars
01/06/2016 - 10:30 Andesite Peak Donner Summit Area Snowpack Observation Forecaster

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