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
03/24/2018 - 01:30 Andesite Ridge Donner Summit Area Snowpack Observation Guide
03/23/2018 - 12:00 Tamarack Peak Mount Rose Area Avalanche Observation Viewing the avalanche on the far east ridge of Tamarack from the Proleteriat Debris pile at the base of the avalanche. Smaller cornice pieces dropped onto a wind-loaded test slope. These did not trigger any cracking or wind slab failures. Some skier triggered cracking on a wind-loaded test slope. Forecaster
03/23/2018 - 11:30 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Most trees above 8200 feet showed significant signs of settlement. Above treeline the wind had compacted the new snow and made it very dense and slabby. Small cornices were impressively strong. No significant cracking or propagation observed. Wind affected snow below treeline (but nearing summit ridge). Professional Observer
03/23/2018 - 11:00 Hidden Peak West Shore Area Avalanche Observation Supportable crust 6,500' to 7,150'. Crust giving way to unconsolidated storm snow at 7,500'. Signs of 2 to 3 inches of storm snow settlement around trees. Natural avalalanche, very fresh looking. Likely triggered by cornince fall earlier this morning. 1 of 2 similar avalanches in this cliff area. Blowing snow on summit ridge. Intentional cornince collapse produced no results. Forecaster
03/23/2018 - 09:00 Jobs Peak East Shore Area Avalanche Observation Public
03/23/2018 - 07:00 Mt. Judah Donner Summit Area Avalanche Observation Public
03/23/2018 - 03:30 "Broken Glass" Tammarack Peak area Mount Rose Area Avalanche Observation Public
03/23/2018 - 03:30 Mt. Houghton Mount Rose Area Avalanche Observation Public
03/23/2018 - 03:30 Tamarack Peak area Mount Rose Area Avalanche Observation Public
03/22/2018 - 17:00 Desolation Wilderness Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Forecaster
03/22/2018 - 13:00 Proleteriat Mount Rose Area Avalanche Observation Avalanche on the Proletariat that failed on the buried graupel layer. Avalanche on the NE slope just W of Proletariat that may have been more of a wind slab and may not have involved the graupel layer. Forecaster
03/22/2018 - 12:00 Dicks Peak Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Very difficult to see in photo, but very large crown in center. Forecaster
03/22/2018 - 12:00 Ward canyon Blackwood Canyon or Ward Canyon Area Avalanche Observation Guide
03/22/2018 - 11:00 Andesite Peak Donner Summit Area Snowpack Observation Shooting crack on an E - NE facing wind-loaded slope at 8100 ft. Rain runnels at 7500'. Large cornice drops did not cause wind slab failure.  Heavy, wet, deep snow existed at 8200' on the top of Andesite. Forecaster
03/22/2018 - 02:30 Incline Peak N Bowl Mount Rose Area Avalanche Observation Eye-opening debris pile low down on Incline Pk Public