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
03/27/2018 - 13:00 Mt. Tallac Desolation Wilderness Area (including Emerald Bay) Snowpack Observation Signs of past and present warming and loose wet instability on E aspect at 8,000'. Not visible in this photo, but some blowing snow and scouring of slope and cornices in the summit bowl. Scouring to very firm rain crust along summit ridge at 9,200'. Test slope failure as loose wet and rollerballs. Micro NE aspect within greater E aspect terrain at 7,900'. Forecaster
03/26/2018 - 13:00 Connecting ridge between tinkers knob and Anderson peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Public
03/26/2018 - 12:00 Trimmer Peak Luther Pass Area (including Job and Freel) Snowpack Observation Small test slopes show reactive cornice failure but no wind slab instability. Plenty of snow available for transport along ridgeline. Forecaster
03/26/2018 - 11:00 Hidden Peak West Shore Area Avalanche Observation Public
03/25/2018 - 15:00 Herlan Peak East Shore Area Snowpack Observation Snowpit on N aspect at treeline to examine rain crust Wind slab on NW aspect near treeline Public
03/25/2018 - 12:15 Jakes Peak West Shore Area Avalanche Observation Small wind slab on ridge top Wind scoured snow at tree line. Public
03/25/2018 - 12:00 Hidden Peak West Shore Area Avalanche Observation Minimal cornice development Public
03/25/2018 - 12:00 Andesite Ridge Donner Summit Area Avalanche Observation Public
03/25/2018 - 11:15 Jakes Peak (SE Face) Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Public
03/25/2018 - 11:15 Red Mountain area Donner Summit Area Avalanche Observation Public
03/25/2018 - 11:15 Poulsens/Silver Ridge Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Wind Slab failure Small Cornice drop with little slab propagation Guide
03/25/2018 - 10:30 Andesite Peak Donner Summit Area Avalanche Observation Natural wind slab below the summit of Andesite, E aspect, ~8,200'. Appeared to have occurred late on March 24. 6 inches of storm snow available for wind transport in above treeline areas. Dark line is our skin track. Minor cracking on wind loaded test slope above treeline. Forecaster
03/24/2018 - 12:45 East ridge of Silver Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation Deep slab on East ridge of Silver Slab failed to ground Lower deep slab Guide
03/24/2018 - 11:30 Chickadee ridge Price Peak (?) Mount Rose Area Snowpack Observation Public
03/24/2018 - 11:00 Incline Lake Peak Mount Rose Area Snowpack Observation Large cornices along summit ridge. Note the cracked settlement cones on the trees. One of at least a half dozen storm slab avalanches that occurred in this area on March 22. Snowpit tests in the crown indicated that the weak layer was no longer reactive. Cracked settlement cone below treeline. Forecaster

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