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
01/31/2016 - 12:00 Tamarack Peak Mount Rose Area Snowpack Observation Forecaster
01/30/2017 - 12:00 Rubicon Peak West Shore Area Snowpack Observation Signs of 2+ feet of storm snow settlement. Forecaster
12/21/2017 - 11:00 Andesite Peak Donner Summit Area Snowpack Observation Wind transport of snow at treeline.The maximum extent of cracking seen today in new wind slabs on W-NW aspects. Small 1.5m crack off tip of right ski.Cracking of undercut wind slab on NE aspect at treeline. Forecaster
03/16/2017 - 12:00 Twin Crags Sawtooth Ridge to Tahoe City Snowpack Observation Loose wet sluff triggered by a ski cut on a S aspect at 6900 ft. @ noon.More ski cut triggered loose wet sluffs on a S aspect test slope.Mid shin deep wet snow on a S aspect at 6600 ft. at 10:30 am. Forecaster
01/12/2017 - 12:00 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Loose dry sluff triggered by a small cornice dropped onto the slope.The wind loaded test slope that cracked and failed with a hard ski kick after previously being undercut.Settlement crack around the base of a tree. Forecaster
02/05/2016 - 11:00 Mt. Judah Donner Summit Area Snowpack Observation Forecaster
03/06/2016 - 11:30 Hidden Peak West Shore Area Snowpack Observation Forecaster
02/24/2018 - 16:15 Andesite Peak Donner Summit Area Snowpack Observation Shooting crack on an E facing wind loaded test slope @ 7900 ft. after a few hard stomps The same test slope after a few more stomps. The wind slab slid down the small test slope. Forecaster
12/26/2016 - 10:10 Andesite Peak Donner Summit Area Snowpack Observation Forecaster
04/13/2017 - 11:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
03/11/2018 - 01:00 Elephants Hump Carson Pass Area Snowpack Observation Mid level cloud cover from 7000' to 8000' from Homewood through South Lake Tahoe at 1pm.  Limited roller balls on sun exposed NE aspects in late morning hours. Forecaster
02/07/2016 - 12:00 South Side Jakes Peak West Shore Area Snowpack Observation Forecaster
03/31/2018 - 10:45 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Site of crown profile. 1 of 3 deep slab avalanches on N aspect terrain along the E ridge of SIlver. PST prepped to test Feb facets that was the failure layer in the avalanche. Another of 3 deep slab avalanches on N aspect terrain along the E ridge of SIlver. Forecaster
11/09/2015 - 10:20 Castle Peak, SW ridge Donner Summit Area Snowpack Observation Forecaster
02/07/2017 - 08:30 Andesite Ridge Donner Summit Area Avalanche Observation
Crown from wet slab avalanche triggered by natural cornice collapse.
Cornice and avalanche debris.
Older wet slab avalanches on NE-E aspects. These were widespread in the area.
Forecaster

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