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Snowpack, Weather, and Avalanche Observations

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. MSAC 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. This program is available as a free download at A video on how to download and use this program is available here. Please send us your observations using the buttons below.

Location Region Observation Type Date and time of observation or avalanche occurrencesort ascending Videos Avalanche photos Videos Snowpack photos Snowpit or crown profile photo or graph Observation made by
Ski bowl Mt. Shasta Snowpack Observation 03/25/2017 - 1:30am Public
Backside "Coyote Butte" @ Mt Shasta Ski Park just right of primary start zone Mt. Shasta Snowpack Observation 03/24/2017 - 8:30pm Public
Grey Butte Mt. Shasta Snowpack Observation 03/22/2017 - 6:45pm Professional Observer
Old Ski Bowl Mt. Shasta Snowpack Observation 03/19/2017 - 6:00pm Forecaster
Snow and Avalanche Conditions on the South Side of Mt Shasta Mt. Shasta Snowpack Observation 03/10/2017 - 8:15pm A couple loose wet slides off the easterly aspect of Green Butte Snow surfaces in the Old Ski Bowl Snow surfaces in the Old Ski Bowl, micro icy chicken heads Widespread melt runnels below 8500 feet, very soft snow, calf to knee deep boot penetration Widespread melt runnels below 8500 feet, very soft snow, calf to knee deep boot penetration Forecaster
Lower Sun Bowl Mt. Shasta Snowpack Observation 03/08/2017 - 9:00pm Professional Observer
Avalanche on Left Peak Castle Lake Avalanche Observation 03/06/2017 - 6:45pm Public
Grey Butte NE Aspect Mt. Shasta Snowpack Observation 03/05/2017 - 8:00pm Natural cornice break Ski triggered cornice break Cornice that broke off Professional Observer
Right Peak Castle Lake Avalanche Observation 03/04/2017 - 7:00pm Board of Directors
Castle Lake Castle Lake Snowpack Observation 03/02/2017 - 7:00pm Professional Observer
Sun Bowl Mt. Shasta Avalanche Observation 02/28/2017 - 4:00pm Professional Observer
Sun Bowl avalanche Mt. Shasta Avalanche Observation 02/24/2017 (All day) Forecaster
Gray Butte Mt. Shasta Snowpack Observation 02/23/2017 - 9:00pm A view up the mountain from 9k feet in the Old Ski Bowl. This photo was not from the pit location. A small point release on Red Butte Observation wall from pit Forecaster
Eddy Range - Parks Creek summit area Mt Eddy Avalanche Observation 02/21/2017 - 7:00pm Forecaster
Ash Creek Butte East of Mt Shasta Avalanche Observation 02/20/2017 - 7:00pm Forecaster