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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.

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 and Brewer Creek Trailhead Mt. Shasta Snowpack Observation 02/05/2018 - 1:00am Road to Ash Creek Butte - Groomed, but at times exposed to dirt Ash Creek Butte - North Facing Near the Bowl at Ash Creek Butte - 4 to 6 in of moist to wet snow Conditions at Brewer Creek Trailhead - 1 to 3 ft of snow Distant View of the NE Side Closest you can expect to get to the trailhead Professional Observer
Avalanche Gulch Mt. Shasta Snowpack Observation 02/04/2018 - 1:00pm Forecaster
Green Butte Ridge and Sun Bowl Mt. Shasta Snowpack Observation 02/01/2018 - 2:45pm Lower portion of Green Butte Ridge, below treeline, thin snowpack Texturing of snow surface Old wind slab avy debris, looking down into Sun Bowl from Broadway Broadway with Mount Shasta in background, near treeline Forecaster
Avalanche Gulch Mt. Shasta Snowpack Observation 01/31/2018 - 2:00pm Wind Transporting Snow, Helen Lake, 01.31.18 Snowmobile Access View from Bunny Flat View Up Avalanche Gulch - Moist to Wet Snow Scoured Westerly Slopes Wind Erosion and Sastrugis, Westerly and Southerly Aspects, 8500-9500 ft Firm Conditions, Sastrugis and Wind Erosion, Helen Lake View Up to Red Banks Professional Observer
Sun Bowl Mt. Shasta Avalanche Observation 01/30/2018 - 10:15am Public
Old Ski Bowl Mt. Shasta Snowpack Observation 01/29/2018 - 1:30pm Professional Observer
Sargent's Ridge, South Gate Meadows, Red Butte Mt. Shasta Snowpack Observation 01/28/2018 - 2:00pm Forecaster
Eddy Mtns - Parks Creek Summit Mt Eddy Snowpack Observation 01/28/2018 - 1:30pm Parks Ck Summit area overlook into Mt Eddy/Deadfall area Lower Deadfall Mdws TH Skin track and breakable crust Hard, tree drip rings in the AM, soft and sticky in the PM on southerly slopes Forecaster
Spur Ridge of Sargent's into St. Germaine's Bowl Mt. Shasta Avalanche Observation 01/27/2018 - 5:00pm Forecaster
Rapid Warming on Grey Butte - Northwest Side Mt. Shasta Snowpack Observation 01/27/2018 - 3:10pm Rapid Warming Forecaster
Old Ski Bowl Mt. Shasta Avalanche Observation 01/27/2018 - 3:00am Forecaster
Above Treeline Snowpit & Conditions Mt. Shasta Snowpack Observation 01/26/2018 - 12:30pm Recent avalanche (estimated 1.24.18) Surface conditions, Old Ski Bowl, upper elevations Snowpit, 10,000 ft, Old Ski Bowl Scoured moraine tops, 9,500 feet Forecaster
Wind Slab Avalanche off Green Butte Mt. Shasta Avalanche Observation 01/24/2018 - 4:00pm Forecaster
Snowpit and Obs from Grey Butte Mt. Shasta Snowpack Observation 01/24/2018 - 3:30pm Small loose dry avalanche off north ridge of Grey Butte minor cracking within new snow, below treeline, on skin up to Grey Butte minor cracking within new snow, below treeline, on skin up to Grey Butte Additional small loose dry avalanche off north ridge of Grey Butte Shallow wind slab, easily triggered Forecaster
Grey Butte / Old Ski Bowl Mt. Shasta Snowpack Observation 01/22/2018 - 4:30pm North ridge of Grey Butte Turns down the west face of Grey Butte A quick foray up into Old Ski Bowl, scouring with icy surfaces and patches of wind features Mount Shasta from the top of Grey Butte Forecaster