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 occurrence Avalanche observation video Avalanche photos Snowpit videos (tests, etc) Snowpack photos Snowpit or crown profile photo or graph Observation made bysort descending
Gray Butte Mt. Shasta Snowpack Observation 12/03/2016 - 1:30pm Gray Butte area Board of Directors
Avalanche Gulch Mt. Shasta Snowpack Observation 12/05/2016 - 8:30am Avalanche Gulch, 50/50 Flat area, icy sheen on snow! Windy, firm conditions Lower Avalanche Gulch Board of Directors
Right Peak Castle Lake Avalanche Observation 03/04/2017 - 11:00am Board of Directors
Avy Gulch/Casaval Ridge/The Catwalk/Trinity Chutes Mt. Shasta Snowpack Observation 12/29/2016 - 11:30pm The Catwalk Trinity Chutes Riming Thumb Rock & Sargents Climbing Ranger
Green Butte, Sun Bowl Mt. Shasta Avalanche Observation 12/17/2016 - 4:00pm Forecaster
Eddies - Parks Creek Area Mt Eddy Snowpack Observation 02/05/2017 - 2:15pm Forecaster
Grey Butte Mt. Shasta Snowpack Observation 12/24/2016 - 1:00pm Forecaster
Old Ski Bowl Mt. Shasta Snowpack Observation 12/11/2016 - 3:00pm Strong NW winds continue to transport snow Forecaster
Green Butte Ridge Mt. Shasta Snowpack Observation 01/03/2017 - 2:30pm Forecaster
Green Butte Mt. Shasta Avalanche Observation 11/22/2016 - 11:00am Forecaster
Roadbank, Above Box Canyon Dam Mt. Shasta Avalanche Observation 01/08/2017 - 11:00am Forecaster
Shoulder of north aspect of Green Butte Mt. Shasta Snowpack Observation 11/30/2016 - 1:30pm Forecaster
Castle Lake Castle Lake Snowpack Observation 12/22/2016 - 4:30pm Forecaster
Green Butte/Old Ski Bowl Mt. Shasta Snowpack Observation 01/12/2017 - 2:30pm East aspect of Green Butte, this entire slope slid sometime in the past week. Same easterly aspect of Green Butte that avalanched during this past week Looking up into the Old Ski Bowl from about 9,000 feet Snow surface conditions above treeline on Mt Shasta Forecaster
Snow and Avalanche Conditions on the South Side of Mt Shasta Mt. Shasta Snowpack Observation 03/10/2017 - 12:15pm 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


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