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 This website also has a quick video and user guide on how to use create snowpits. Please send us your observations using the button above.
Date and time of observation or avalanche occurrence Location Region Observation Type Photos Snowpack, Avalanche, Weather Videos Snowpit videos (tests, etc) Observation made by
02/09/2020 - 12:15 Twin Lake Carson Pass Area Snowpack Observation Public
01/15/2020 - 16:00 Donner Ridge Donner Summit Area Avalanche Observation Public
12/22/2019 - 02:00 donner judah saddle Donner Summit Area Snowpack Observation Public
02/11/2020 - 12:00 Blue Lakes Carson Pass Area Snowpack Observation Cornices  Decent snow found in isolated, shady areas Public
01/17/2020 - 08:00 Jakes Peak West Shore Area Snowpack Observation ECTP22 on the faceted rain crust. The fracture along the crust was notably clean upon further inspection of the pit. Public
03/26/2020 - 02:45 Above Frog Lake, before entering N. Castle Bowl Independence Lake Area Avalanche Observation Public
03/13/2020 - 03:00 Incline Peak Mount Rose Area Snowpack Observation CTN on ESE aspect ESE pit profile CT28 B on NE aspect NE pit profile Public
01/26/2020 - 10:00 South slopes of Tamarack Mount Rose Area Snowpack Observation ECTN14 at snowpit #1; some cohesiveness of 2 layers (new snow, old windslab) that popped out when we pulled at them with a shovel. Public
12/08/2019 - 12:00 Carpenter Ridge Independence Lake Area Snowpack Observation Public
03/15/2020 - 14:00 Powderhouse peak Luther Pass Area (including Job and Freel) Avalanche Observation Public
02/17/2020 - 12:15 Relay peak Mount Rose Area Snowpack Observation Breakable crust, sastrugi, wind blown snow and near surface facets Reverse tracks Public
03/16/2020 - 01:00 East Ridge of Tamarack Peak Mount Rose Area Snowpack Observation Wind Affected Ridge Cracks in Cornice Public
03/20/2020 - 09:45 "Cole Bowl" -- East of Forestdale Divide, North by Northwest of the Nipple Carson Pass Area Avalanche Observation Public
01/19/2020 - 02:30 Incline Peak Mount Rose Area Snowpack Observation Jan 4 facet layer buried down about 44 cm Pit Profile. Didn't know how to operate Snow Pilot so took a photo of study book Public
12/30/2019 - 09:00 Mt. Judah Donner Summit Area Snowpack Observation Public


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