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
12/24/2016 - 11:10 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Avalanche Observation
This slide was triggered from this spot on the ridge above the slide. The lower angle slope below me cracked but did not slide.
Overview of the slide, taken from between the trigger point and the crown.
Looking a the skiers left side of the crown from the middle of the avalanche. Note the firm bed surface (the 12/15 rain crust) and the thin darker line in the crown just above the rain crust at the bottom of the new snow - the near crust facets.
Skier's right side of the crown and flank as the slope become lower angle to the skier's right.
Looking down the path at the debris and terrain traps below.
Small skier triggered loose dry sluff and a shooting crack on a N-NE facing slope around 8000 ft.
Forecaster
04/11/2017 - 11:00 Incline Lake Peak Mount Rose Area Snowpack Observation ECTN results were obtained from testpit in climbers left side flank.ECTN results in testpit.2 x ECTN and 1 x ECTP results were obtained from testpit in climbers left side flank. Forecaster
01/13/2017 - 12:30 Donner Peak Donner Summit Area Snowpack Observation Wind slab avalanche skier triggered on test slope.  W aspect, 7500', 35 degree slope.40' long shooting cracks in wind loaded terrain.Small wind loaded test slopes showing slab failure.  W aspect.Settlement cones around trees. Forecaster
03/30/2018 - 11:00 Stevens Peak Carson Pass Area Snowpack Observation 25 cm of snow surface refreeze on at 8,000' on E aspect at 10:50am Supportable crust, just entering melt phase at ~9,000' at 11:25am. Skier triggered roller ball at 8,100' on E aspect at 12:20pm. Forecaster
12/07/2016 - 13:00 Relay Peak Mount Rose Area Snowpack Observation Forecaster
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
01/16/2017 - 10:00 Herlan Peak East Shore Area Snowpack Observation Avalanche debris on the uphill side of trees.Blowing snow in the distance on Freel Peak. Forecaster
12/29/2016 - 11:00 Polaris Point Blackwood Canyon or Ward Canyon Area Snowpack Observation Buried surface hoar layer above the 12/15 NCF's.Close up of the buried surface hoar. Forecaster
01/20/2016 - 13:30 Rubicon West Shore Area Snowpack Observation Forecaster
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
12/04/2017 - 11:30 Rubicon Peak West Shore Area Snowpack Observation Surface Hoar was observed on the snow surface at all elevations.Skier triggered cracking on a NE facing wind-loaded test slope at 8800 ft.Skier triggered cracking on a NE facing wind-loaded test slope at 8800 ft. that was previously undercut.Snow coverage at 7400 ft.Snow coverage at 8300 ft. Forecaster
03/13/2016 - 12:30 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
04/14/2016 - 10:45 Andesite Ridge Donner Summit Area Snowpack Observation Forecaster
12/17/2015 - 11:30 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
01/09/2018 - 11:30 Tamarack Peak Mount Rose Area Snowpack Observation Small wind slab failure resulting from a ski cut on a small wind-loaded test slope near the ridge at 9700 ft. on a NE aspect.ECTN on a N aspect at 10200 ft. on My Houghton. This test was representative of the other snowpit tests we performed today. Forecaster

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