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 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
12/23/2016 - 13:30 Tamarack Peak Mount Rose Area Snowpack Observation Wind slab failure triggered by a skiers weight on a NE facing test slope at 9360 ft. Cracking on a wind loaded test slope. , Forecaster
02/04/2016 - 14:00 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
11/20/2015 - 13:30 Wildflower Ridge Donner Summit Area Snowpack Observation Forecaster
11/25/2017 - 14:00 Relay Peak Mount Rose Area Snowpack Observation ECTX on a N aspect at 9800 ft. on Relay Peak. A PST performed at this location scored PST 100/100 (END) when I targeted the old snow near the bottom of the snowpack. Forecaster
03/29/2016 - 12:00 Blue Lakes Carson Pass Area Snowpack Observation Forecaster
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
12/04/2015 - 11:45 Silver Peak Cabin Creek, Deep Creek, or Pole Creek 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
12/30/2015 - 11:00 Andesite Ridge Donner Summit Area Snowpack Observation Forecaster
03/17/2018 - 10:00 Slab Cliffs Mount Rose Area Avalanche Observation Natural storm slab avalanche Additional photo taken and added to this observation on March 19. Forecaster
12/05/2017 - 12:00 Castle Peak and Basin Peak Donner Summit Area Snowpack Observation Scoured surfaces on a N aspect near 8800 ft. on Basin PeakSofter unconsolidated snow on a below treeline N aspect sheltered from the NE winds @ 8200 ft. above Devils Oven Lake.  Forecaster


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