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
03/18/2018 - 13:30 E Shoulder of Mt Rose Mount Rose Area Avalanche Observation Settlement at base of trees on ENE exposure Warm wet surface snow with small roller balls at 9800' SE exposure Old crown at 8500' E exposure 30 deg with convexity View of Mt Houghton slab as seen from Mt Rose Public
03/18/2018 - 13:00 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
03/18/2018 - 12:45 Andesite Peak Donner Summit Area Snowpack Observation RB4 near Andesite Peak Public
03/18/2018 - 12:15 Rose BC - Mt Houghton Mount Rose Area Avalanche Observation Public
03/17/2018 - 12:30 Andesite Peak Donner Summit Area Avalanche Observation The second of two intentionally skier triggered wind slabs in E aspect terrain above treeline. The first of two intentionally skier triggered wind slabs in E aspect terrain above treeline. Two foot crown. 1.75 m (5.75 ft) of storm snow. CTH results with broken failure planes within the storm snow. ECTX in same pit. Signs of storm snow settlement on tree cones at 10am. The second of the two triggered wind slabs. Initial efforts created loose dry. Once the wind slab was triggered from a more prime location, the slab propagated back through the area that had previously failed as loose dry closer to the snow surface. 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
03/17/2018 - 03:30 Tamarack Peak Mount Rose Area Avalanche Observation Public
03/16/2018 - 14:00 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation One of the few test slopes that produced slab results. Professional Observer
03/16/2018 - 12:00 Andesite Peak Donner Summit Area Avalanche Observation Largest wind slab avalanche triggered by small cornice piece dropped onto the ENE facing slope. A secondary slide released and that crown is 3 to 4 ft. deep. Small wind slab that propagated all the way around an E-ENE-NE facing test slope. Triggered from a low angle slope on the side. Storm slab in below treeline terrain triggered from the lower angle slope I am standing on. Wind slab in near treeline terrain on an ENE facing slope. We cleaned the box on the sign off at the start of our tour and ~3 hours later 6 to 8 inches of snow had accumulated on the box. Forecaster
03/16/2018 - 11:15 Pole Creek Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Intentional skier triggered loose dry avalanche (D1) on road cut at very bottom of Pole Cr Rd. Top of Rd cut slope, HS 115cm, HST 80cm Forecaster
03/15/2018 - 12:15 Elephant's Hump Carson Pass Area Snowpack Observation Pit wall. HS 175cms. Professional Observer
03/15/2018 - 11:30 Powderhouse Luther Pass Area (including Job and Freel) Avalanche Observation 12-16" avy crown debris field Public
03/15/2018 - 01:00 Jakes Peak West Shore Area Avalanche Observation Skier triggered wind slab near top of Peak.  E aspect, 38 degree, 8900'. Wind slab crown. Shooting cracks on small wind loaded test slope. Forecaster
03/14/2018 - 18:00 Elephants's Back Carson Pass Area Avalanche Observation Multiple natural wind slab avalanches on Elephant's Back. Intense blowing snow Natural wind slab on ridge leading to Elephant's Back. Lots of wind slab evidence in the area. Professional Observer
03/14/2018 - 13:45 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Skier triggered shooting crack on a wind-loaded NE facing test slope near 9000 ft. Small skier triggered wind slab on a N facing wind-loaded test slope near 9200 ft. Forecaster