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
03/14/2018 - 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
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
03/23/2018 - 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
03/25/2018 - 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
03/29/2018 - 10:00 Mt. Judah Donner Summit Area Snowpack Observation Runnels in the snow surface indicating drainage and melting. 2 to 3 cm of corn snow on a supportable crust at 10:15 am at 7800 ft. on a SE aspect Wet snow below the frozen melt freeze crust on a SSE aspect Wind scoured surfaces on a NE aspect Breakable crust on a sheltered N aspect at 7800 ft. Forecaster
04/06/2018 - 10:45 Andesite Ridge Donner Summit Area Snowpack Observation Knee deep wet snow on an ENE aspect at 7560 ft. Small skier triggered pinwheels on a NE facing test slope. Forecaster
04/15/2018 - 11:00 Powderhouse Peak Luther Pass Area (including Job and Freel) Snowpack Observation Still adequate snow coverage for travel at lower elevations but dry patches are growing. Firm surface snow conditions around 9000 feet on north facing slopes at 11:30am. Professional Observer
02/16/2018 - 11:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
02/24/2018 - 10:00 Incline Lake Peak Mount Rose Area Snowpack Observation Potentially problematic interface of recent storm snow on top of old near surface facets as seen in the pit wall. Newly formed cornices, easy to intentionally collapse onto small test slopes below. Newly formed wind slab fractured by a ski cut on this test slope. Moderate amounts of blowing snow. Forecaster
02/26/2018 - 11:00 lower Andesite Donner Summit Area Avalanche Observation Avalanche crown and start zone Looking down on the slide. Skiers left flank is out of frame. Professional Observer
03/02/2018 - 13:45 Mt. Judah Donner Summit Area Avalanche Observation Skier triggered wind slab on a slope that had previously slid. Skier triggered wind slab on a slope that had previously slid. Skier triggered shooting cracks Forecaster
03/04/2018 - 12:15 Trimmer Peak Echo Summit Area Avalanche Observation Public
03/07/2018 - 12:45 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
03/11/2018 - 11:30 Chickadee Ridge Mount Rose Area Snowpack 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

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