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
12/20/2018 - 09:45 E side Rose Knob Peak Mount Rose Area Snowpack Observation Educator
Donner Summit Avalanche Seminars
12/26/2018 - 12:15 Deep Creek Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation No signs of wind effect in open areas below treeline, ~7,900 N aspect'. Minimal signs of wind effect from NE winds on ridgetop at ~8,000'. F hard surface snow with micro-sastrugi. Some exposed rain crust just visible reflecting on the cornice top in upper Pole Creek. Forecaster
12/28/2018 - 12:00 Angora Peak Echo Summit Area Snowpack Observation Professional Observer
01/05/2019 - 10:45 Fireplug Mount Rose Area Snowpack Observation Forecaster
01/07/2019 - 08:00 Mt. Judah Donner Summit Area Avalanche Observation Several natural avalanches on Mt. Judah occurring at different times throughout the 1/5-1/7 storm cycle.  Some avalanches ran full path to bottom flats.  8100', E aspect. Different angle of Mt. Judah avalanches.  Some debris mostly covered and some looks to have occurred towards the end of the storm. Multiple natural wind slab avalanches on Wildflower Ridge, 7800', NE aspect. Forecaster
01/11/2019 - 11:00 North Side Castle Peak Donner Summit Area Avalanche Observation Debris pile. Crown as see from the ridgetop to the east. Crown as see from the ridgetop to the east. Looking E along the crown at the point of the collapsed cornice. Spot where footprints close to the edge triggered the cornice collapse. Forecaster
01/14/2019 - 15:00 North Bowl on Castle Peak Donner Summit Area Snowpack Observation 1/11 Avalanche on Castle Peak Public
01/16/2019 - 13:00 2.5k west of peak 8740 Independence Lake Area Avalanche Observation Test slope avalanche on small wind loaded cornice Shooting crack from snowmobile ski tip Shooting crack from snowmobile track Public
01/19/2019 - 12:30 ~30 meters SW of Lake Mary Donner Summit Area Snowpack Observation Public
01/23/2019 - 12:30 Back side of Houghton Mount Rose Area Snowpack Observation Public
01/31/2019 - 10:15 Johnson Canyon Donner Summit Area Snowpack Observation 2 inches of corn on a supportable melt-freeze layer on a W aspect at 1:15 Crack in the snowpack as a cornice pulls away from the ridge. Forecaster
02/03/2019 - 13:30 Powderhouse Luther Pass Area (including Job and Freel) Snowpack Observation Professional Observer
02/07/2019 - 12:00 Davis Creek Mount Rose Area Snowpack Observation Davis Creek area as seen on Feb 7 with Feb 5 avalanche noted below arrow. Forecaster
02/09/2019 - 15:00 Brockway Summit Sawtooth Ridge to Tahoe City Snowpack Observation Small cracking in a very soft slab. The larger cracks we saw later were approximately the same depth. Public
02/12/2019 - 12:30 The burn in Meyers Echo Summit Area Avalanche Observation Public

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