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.

Locationsort descending 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 by
Ash Creek Butte East of Mt Shasta Snowpack Observation 01/29/2017 - 1:00pm Forecaster
Ash Creek Butte East of Mt Shasta Avalanche Observation 02/20/2017 - 11:00am Forecaster
Ash Creek Butte East Bowl East of Mt Shasta Snowpack Observation 12/16/2016 - 2:30pm Wind Transport Ash Creek Butte Ridge Weather Station Shooting Cracks, shallow wind slab pocket on test slope Forecaster
Ash Creek Butte East Bowl East of Mt Shasta Snowpack Observation 12/05/2016 - 1:30pm A view of the east side of Mt Shasta on 12/5/16 Our new Ash Creek Butte weather station! Forecaster
Avalanche Gulch Mt. Shasta Avalanche Observation 04/07/2017 - 4:06pm Public
Avalanche Gulch Mt. Shasta Snowpack Observation 02/11/2017 - 1:00pm Forecaster
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
Avalanche Gulch Mt. Shasta Avalanche Observation 04/02/2017 - 10:05am Public
Avalanche in Old Ski Bowl Mt. Shasta Avalanche Observation 03/25/2017 - 12:30pm Forecaster
Avalanche on Left Peak Castle Lake Avalanche Observation 03/06/2017 - 10:45am Public
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
Backside "Coyote Butte" @ Mt Shasta Ski Park just right of primary start zone Mt. Shasta Snowpack Observation 03/24/2017 - 1:30pm Public
Casaval Ridge, Avalanche Gulch Mt. Shasta Avalanche Observation 12/17/2016 - 6:00am Large Natural Avalanche, Casaval Ridge into Avalanche Gulch Forecaster
Castle Lake Castle Lake Snowpack Observation 12/27/2016 - 12:00pm Professional Observer
Castle Lake Castle Lake Avalanche Observation 02/07/2017 - 5:00am Forecaster


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