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
12/04/2016 - 11:30 North Castle Peak Donner Summit Area Snowpack Observation Forecaster
03/04/2018 - 12:00 Jakes Peak West Shore Area Avalanche Observation Looking down slope from the right flank of crown. Part of the crown. Crown line. Forecaster
11/30/2017 - 11:00 Tamarack Peak and Fireplug Mount Rose Area Snowpack Observation Forecaster
04/03/2018 - 11:00 Jakes Peak West Shore Area Snowpack Observation Forecaster
01/04/2018 - 13:00 Mt. Judah Donner Summit Area Snowpack Observation ECTP in an area where the loose weak snow had a small slab on top of it prior to last night's storm.Small loose wet roller balls on a N facing slope at 8000 ft. Forecaster
04/09/2016 - 11:00 Becker Ridge Echo Summit Area Snowpack Observation Forecaster
12/12/2016 - 11:00 South Side of Castle Peak Donner Summit Area Snowpack Observation Firm icy slopes on Castle PeakDebris left from water coming up out of the snowpack and flowing across the surface.A piece of the crust sawed out of the snowpack. Forecaster
01/23/2016 - 13:30 Andesite Ridge Donner Summit Area Avalanche Observation
Forecaster
02/17/2016 - 13:00 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Forecaster
03/02/2018 - 13:45 Mt. Judah Donner Summit Area Avalanche Observation Skier triggered wind slab on a slope that had previously slid. Skier triggered wind slab on a slope that had previously slid. Skier triggered shooting cracks Forecaster
11/09/2015 - 10:20 Castle Peak, SW ridge Donner Summit Area Snowpack Observation Forecaster
11/09/2016 - 10:45 Elephant's Back Carson Pass Area Snowpack Observation Forecaster
01/10/2016 - 13:00 Echo Peak Echo Summit Area Snowpack Observation Forecaster
01/12/2018 - 12:45 Castle Peak Donner Summit Area Snowpack Observation Surface hoar on top of a frozen rain crust in a sheltered meadow at 7600 ft.ECTP failing on the moist facets below a strong slab layer on a NW aspect at 8300 ft.Frozen surface crust on a NW aspect along the ridgeline at 8400 ft.Soft wet snow surface on a SW aspect @ 8200 ft at 1:30 pm. Forecaster
03/03/2017 - 12:00 Castle Peak - North Bowl Donner Summit Area Snowpack Observation Some cracking on a slope undercut by my skin track. Forecaster

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