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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 occurrence Videos Avalanche photos Videos Snowpack photos Snowpit or crown profile photo or graph Observation made bysort descending
Gray Butte Mt. Shasta Snowpack Observation 12/03/2016 - 9:30pm Gray Butte area Board of Directors
Right Peak Castle Lake Avalanche Observation 03/04/2017 - 7:00pm Board of Directors
Avalanche Gulch Mt. Shasta Snowpack Observation 12/05/2016 - 4:30pm Avalanche Gulch, 50/50 Flat area, icy sheen on snow! Windy, firm conditions Lower Avalanche Gulch Board of Directors
Avy Gulch/Casaval Ridge/The Catwalk/Trinity Chutes Mt. Shasta Snowpack Observation 12/30/2016 - 7:30am The Catwalk Trinity Chutes Riming Thumb Rock & Sargents Climbing Ranger
Eastside photos East of Mt Shasta Snowpack Observation 12/22/2017 - 9:30pm Eastside panorama, Ash Creek Butte and Mt Shasta visible East Bowl, ACB ACB loop road view Forecaster
Grey Butte Mt. Shasta Snowpack Observation 02/06/2017 - 7:30pm Forecaster
Avalanche Gulch Mt. Shasta Snowpack Observation 03/05/2018 - 11:00pm Forecaster
Avalanche Gulch Mt. Shasta Avalanche Observation 11/18/2017 - 9:30am Forecaster
Deadfall Lakes, Mount Eddy Mt Eddy Snowpack Observation 01/01/2017 - 9:30pm Mount Eddy 01.01.17 Snowpack Summary and ECT Forecaster
Avalanche Gulch Mt. Shasta Snowpack Observation 01/07/2018 - 8:00pm Forecaster
Rapid Warming on Grey Butte - Northwest Side Mt. Shasta Snowpack Observation 01/27/2018 - 11:10pm Rapid Warming Forecaster
Castle Lake area still struggling... Castle Lake Snowpack Observation 03/14/2018 - 8:30pm Castle Weather Station Castle overview Forecaster
Old Ski Bowl Mt. Shasta Snowpack Observation 04/07/2018 - 8:30pm IMG 5655 Forecaster
Ash Creek Butte/East Side of Shasta East of Mt Shasta Snowpack Observation 12/09/2017 - 9:00pm Forecaster
Old Ski Bowl Mt. Shasta Snowpack Observation 12/20/2017 - 9:30pm Forecaster