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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 http://www.snowpilot.org/. A video on how to download and use this program is available here.

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 by
Ash Creek Butte East of Mt Shasta Snowpack Observation 03/06/2018 - 9:00am Pilgrim Creek Snowmobile Park View Trail Conditions Small cornices along Ash Creek Butte. From a distance. Ski Penetration up to 30 cm. HST = 100 cm / F-4F-1F hardness, CT21 down 100 cm, ECTP30 down 100 cm, failed on rounded facets Professional Observer
Avalanche Gulch Mt. Shasta Snowpack Observation 03/05/2018 - 11:00pm Forecaster
Red Butte Mt. Shasta Snowpack Observation 03/04/2018 - 10:00pm Pit Location 2 Pit Location 1 Professional Observer
Crater Lake Outside of the Forecast Area Snowpack Observation 03/04/2018 - 6:00pm Public
Grey Butte Mt. Shasta Snowpack Observation 03/03/2018 - 11:30pm Forecaster
Bunny Flat / Old Ski Bowl during the storm... Mt. Shasta Snowpack Observation 03/01/2018 - 9:30pm Panther Mdws area Bunny Flat Bunny Flat Test pit Forecaster
East Side of Coyote Butte, adjacent to the Ski Park Mt. Shasta Snowpack Observation 03/01/2018 - 6:30pm Public
Castle Lake, before the storm... Castle Lake Snowpack Observation 02/28/2018 - 9:00pm Left Peak Right Peak Forecaster
Old Ski Bowl Mt. Shasta Snowpack Observation 02/27/2018 - 11:30pm Profile on SE aspect with recent and new wind loading Wind scoured moraine Wind transporting snow Scoured start zones and ridges Professional Observer
Avalanche Gulch Mt. Shasta Snowpack Observation 02/26/2018 - 8:00pm Professional Observer
Sun Bowl Mt. Shasta Snowpack Observation 02/25/2018 - 7:30pm Forecaster
McDonald Peak Outside of the Forecast Area Snowpack Observation 02/25/2018 - 7:11pm Public
Bunny to 10k in Old Ski Bowl Mt. Shasta Snowpack Observation 02/23/2018 - 8:30pm Feb 24, 2018 - Old Ski Bowl Bunny Flat Bunny Flat Active wind transport of snow off Green Butte Scoured and icy old snow surfaces, 10,000 feet, Old Ski Bowl ECTP2@20cm (SC) at 9,000 feet on a 25 deg slope. Forecaster
Clear Creek Access Mt. Shasta Snowpack Observation 02/21/2018 - 10:30pm Forecaster
Sun Bowl Mt. Shasta Snowpack Observation 02/20/2018 - 10:00pm Conditions Below Treeline - 2 to 3 in of dry snow, mixed with exposed crusts and hidden rocks Lower and Upper Sun Bowl Upper Sun Bowl Snow Surface - Lower Sun Bowl - 2 to 3 in of dry wind broken snow Green Butte - Southwest Aspect Broadway - Icy and Rocky Closeup of upper Sun Bowl - Large isolated overhanging cornice Professional Observer

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