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
02/21/2016 - 12:00 Meadow Lake Independence Lake Area Snowpack Observation Forecaster
12/05/2015 - 12:45 Chickadee Ridge Mount Rose Area Snowpack Observation Forecaster
11/14/2017 - 13:00 Castle Peak Donner Summit Area Snowpack Observation Snowpit location. Forecaster
03/22/2018 - 12:00 Dicks Peak Desolation Wilderness Area (including Emerald Bay) Avalanche Observation Very difficult to see in photo, but very large crown in center. Forecaster
03/19/2016 - 14:30 Sugar Bowl to Squaw traverse Cabin Creek, Deep Creek, or Pole Creek Area Snowpack Observation Forecaster
02/18/2017 - 13:00 Mt. Rose Mount Rose Area Snowpack Observation Wind loading at 10,000' from strong SW winds.  Previous wind scouring from SE winds in open terrain from 8000'-9500' on E and NE aspects.Minor roller balls during the early afternoon on solar aspects. Forecaster
11/23/2016 - 15:15 East Ridge of Relay Peak Mount Rose Area Snowpack Observation Forecaster
01/19/2016 - 10:00 West Fireplug Mount Rose Area Avalanche Observation
03/10/2017 - 12:00 South Side Castle Peak Donner Summit Area Snowpack Observation Consistent boot pen around 1' deep throughout the day.Snow surface runnels from previous melt. Forecaster
02/15/2018 - 11:15 Ellis Peak Blackwood Canyon or Ward Canyon Area Snowpack Observation Tale of two aspects - 1.8m deep snowpack on N aspect in the foreground and obvoiusly thin snowpack on solar aspects in the background.Wind effected snow surface below treeline on NNW aspect.Minor, inconsequential wind slab noted in near treeline terrain. Forecaster
12/16/2016 - 07:00 Bronco Chutes Mount Rose Area Avalanche Observation
Looking up at several crowns that likely happened on 12/16 at the end of the recent storm.
A closer look at some of those crowns.
04/08/2017 - 12:30 Jakes Peak West Shore Area Snowpack Observation ECTN23 on a N aspect at 8160 ft.ECTN 26 on an E aspect at 8800 ft. The line shows where the storm snow goes from fist-hard to four-finger-hard. Forecaster
01/06/2017 - 14:15 Andesite Peak Donner Summit Area Snowpack Observation Settlement crack Forecaster
12/12/2015 - 10:20 Horse Canyon Bear Valley Area Snowpack Observation Forecaster
03/07/2018 - 12:00 Donner Peak Donner Summit Area Snowpack Observation Minor roller balls on shaded steep NW-N aspects. Forecaster


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