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 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
12/31/2016 - 12:00 Talking Mountain Echo Summit Area Snowpack Observation Coverage on North aspects along the ridge. Forecaster
01/23/2016 - 11:55 Andesite Meadows Donner Summit Area Snowpack Observation Forecaster
11/06/2015 - 11:00 Elaphant's Back Carson Pass Area Snowpack Observation Forecaster
03/19/2018 - 12:45 SE of Relay Peak Mount Rose Area Avalanche Observation Natural deep slab avalanche across entire slope.  3-4' deep. At the crown line profile, 9600', E aspect Avalanche debris covered by additional storm snow.  Some broken trees with areas of 6' + of avalanche debris. 3' down, a layer of graupel exists on top of a melt freeze crust at 9600', E aspect. Forecaster
12/08/2017 - 12:30 Castle Peak Donner Summit Area Snowpack Observation View of N side of Castle PeakView towards Basin PeakPrevious cornince collapse/wind slab that probably failed last Sunday during or just after storm event and partially covered. Forecaster
11/08/2016 - 12:00 Silver Peak Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
12/20/2015 - 11:45 Elephant's Hump Carson Pass Area Snowpack Observation Forecaster
04/16/2018 - 11:00 Andesite Peak Donner Summit Area Snowpack Observation Small wind slab triggered by large cornice drop on a ENE facing test slope at 8040 ft. See video. Small 1 to 4 inch slab triggered on an E facing test slope @ 8040 ft. that had just received a short period of sun-exposure The other side of the small slab triggered on the E facing test slope. New snow and some wind-loading filling in the skin track @ 8160 ft. About 30 cm (1 ft) of new snow resting on top of a moist crust on top of wet snow in a meadow at 7500 ft. 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
03/03/2017 - 12:00 Rubicon Peak West Shore Area Snowpack Observation 2-4mm surface hoar below 8000'.N aspects above 8000', 4'' of unconsolidated snow remained in protected open below treeline areas. Forecaster
02/06/2018 - 11:35 Rubicon Peak and Peak 9,269' West Shore Area Snowpack Observation Coverage on SE aspect of Peak 9269' at 8800'.  Little to no continuous snow below 8200'. Forecaster
12/17/2016 - 12:45 Incline Lake Peak Mount Rose Area Snowpack Observation Forecaster
04/01/2017 - 11:00 South Side Jakes Peak West Shore Area Snowpack Observation Minor roller ball activity where wind blown snow existed.  8600', SE aspect. Forecaster
01/26/2016 - 13:00 Stanford Rocks Blackwood Canyon or Ward Canyon Area Snowpack Observation Forecaster
02/21/2016 - 12:00 Meadow Lake Independence Lake Area Snowpack Observation Forecaster


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