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 Videos Observation made by
12/22/2017 - 12:00 Rubicon Peak West Shore Area Snowpack Observation Snow coverage on N aspect at 7800'.Snow coverage on N aspect at 8600'. Forecaster
03/20/2016 - 09:45 Rubicon Peak West Shore Area Snowpack Observation Forecaster
01/14/2017 - 12:00 Ta,arack Peak Mount Rose Area Snowpack Observation Surface hoar was widespread in the areaThin rime crust on the snow surface with surface hoar on top of it. Forecaster
03/24/2016 - 15:00 Emerald Bay Chutes Desolation Wilderness Area (including Emerald Bay) Avalanche Observation
Forecaster
03/23/2017 - 12:30 Jakes Peak West Shore Area Snowpack Observation Natural loose wet activity on E-SE-S aspects at 10:30am.Loose dry sluffing off of summit-NE aspect, 9200', 38 degree slope.Intentionally skier triggered wet loose avalanche.  E aspect, 40 degree convexity, sliding on m/f crust.Skier triggered loose wet avalanche on E face of Jakes.Small loose wet skier triggered at 7600', NE aspect, on small test slope. Forecaster
01/02/2017 - 10:45 Castle Peak Donner Summit Area Snowpack Observation One of many wind loaded/wind slab test slopes that avalanched with minimal human triggering. Forecaster
02/11/2018 - 12:00 Elephant's Hump Carson Pass Area Snowpack Observation Looking across at the E and SE aspects of Red Lake Peak with the N aspects of Elephant's Hump in the foreground.Ski tracks showing soft snow in the shade and icy crusts in the sun.Significant melting that has occurred on an E-NE aspect at 7900 ft. on the skin into Elephants Hump. Forecaster
10/30/2017 - 12:00 Round Top Carson Pass Area Snowpack Observation Forecaster
01/12/2018 - 11:20 Slab Cliffs Mount Rose Area Snowpack Observation Pointing at the faint line in the snowpit wall that is the interface between the faceted weak layer and the slab above.Facets from the top of the weak layer classifying as dry to moist. Forecaster
04/15/2016 - 11:45 Castle Peak Donner Summit Area Snowpack Observation Forecaster
12/06/2015 - 12:30 Castle Peak Donner Summit Area Snowpack Observation Forecaster
01/27/2017 - 12:00 Andesite Ridge Donner Summit Area Snowpack Observation Wind transport and scouring along Andesite RidgeSkier triggered crack on a wind loaded W facing test slopeNatural cracking on a wind loaded W facing test slope Forecaster
03/14/2016 - 12:00 Relay Peak Mount Rose Area Avalanche Observation
Forecaster
03/07/2017 - 10:00 lncline Lake Peak Mount Rose Area Snowpack Observation Cornices and blowing snow near the summit of Incline Lake Peak.Limited wind slab cracking isolated to undercut areas. Note the skin track undercut. Forecaster
02/07/2016 - 09:00 Andesite Ridge Donner Summit Area Snowpack Observation Forecaster

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