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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
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
Giddy Giddy Mt. Shasta Snowpack Observation 01/22/2018 - 1:00pm Forecaster
Near top of skiers gully Mt. Shasta Snowpack Observation 01/20/2018 - 11:15am surface hoar Snow Transport Snowpit Public
Bunny Flat & Old Ski Bowl Mt. Shasta Snowpack Observation 01/19/2018 - 2:00pm Bunny Flat, Jan 19 Lower Old Ski Bowl Transition from scoured, icy snow surface to leeward, east facing, wind loaded terrain, lower Old Ski Bowl Firm, icy feature in Old Ski Bowl East aspect of Green Butte Ridge from 10k in Old Ski Bowl Sargents Ridgeline, viewed from 10k in Old Ski Bowl. Forecaster
Avalanche Gulch Mt. Shasta Snowpack Observation 01/19/2018 - 11:00am Looking up Avalanche Gulch From Lake Helen Sargent's Ridge Forecaster
New storm snow: Obs from South Side of Mount Shasta Mt. Shasta Snowpack Observation 01/18/2018 - 2:30pm Forecaster
Old Ski Bowl, Avalanche Gulch Snowpack Observation 01/16/2018 - 3:00pm View from Bunny Flat View from Old Ski Bowl Weather Station View from 11000 ft in Avalanche Gulch Wind Effected Snow A beautiful day on the mountain Professional Observer
Tour of the forecast area Snowpack Observation 01/12/2018 - 1:00pm Bunny Flat trailhead, south side of Mount Shasta Snowmobile launch ramp. Sledders, stick to the lower half of the parking lot, below the bathrooms please! Do not park in the middle of the road. Snowmobile launch ramp. Sledders, stick to the lower half of the parking lot, below the bathrooms please! Do not park in the middle of the road. The one dry patch above gate on Everett Memorial Hwy. All snow past here. The one dry patch above gate on Everett Memorial Hwy. All snow past here. Eddy Mountains from east/northeast Eddy Mountains from Lake Siskiyou Eddy Mountains Eddies, nearing Parks Ck Summit Western side of Eddies, near Parks Ck Summit Parks Ck road, near summit Chutes and Ladders area, Eddies Southerly view from Parks Ck road summit, Eddies Last drift before Parks Ck Summit Castle Lake, high and dry, Left Peak Castle Lake, high and dry, Middle Peak Castle Lake, high and dry, Right Peak Forecaster
Ash Creek Butte East of Mt Shasta Snowpack Observation 01/10/2018 - 1:30pm Making our way up the ridge to the weather station, just an inch or two of new snow on top of firm, old snow. Windy. Ash Creek Butte loop road, heading back. A brief doughnut hole in the clouds. Forecaster

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