Use this page to view archived advisories. The table below shows the overall danger rating and the bottom line for the 20 most recent advisories. Click on the time and date link above each danger rating icon to view the full advisory for that day. Use the date chooser or the pager at the bottom to scroll through the older advisories.

E.g., 06/28/2017
E.g., 06/28/2017
Date the advisory was published: Bottom Line
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November 19, 2016 at 8:20 am

The Mt Shasta Avalanche Center is eagerly awaiting the 2016-2017 winter season. Today, 11/19/16, the mountain received twelve inches of snow overnight and more expected today. Strong southerly winds, averaging 10-15 mph and gusting to 30-40 mph could create new wind and storm slabs on the mountain, above tree line. Shallow buried objects still pose a hazard below tree line. Let it snow! We will begin issuing daily avalanche advisories in December.  

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November 17, 2016 at 9:58 am

The Mt Shasta Avalanche Center is eagerly awaiting the 2016-2017 winter season.  We will begin issuing daily avalanche advisories in December.  Winter like conditions, however, are currently present on Mt Shasta.  This means that there is snow coverage from just below treeline to the summit, and any new snow will affect the avalanche danger considerably. Any sojourn onto Mt. Shasta will require the proper equipment, thoughtful route finding, and snow pack evaluation.  Possible avalanche concerns are listed below.

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November 14, 2016 at 10:37 am

The Mt Shasta Avalanche Center is eagerly awaiting the 2016-2017 winter season. We will begin issuing daily avalanche advisories in December.  Winter like conditions are currently present on Mt Shasta.  This means that there is snow coverage from just below treeline to the summit. This, in turn, means that any new snow will affect the avalanche danger considerably. Any sojourn onto Mt. Shasta will require the proper equipment, thoughtful route finding, and snow pack evaluation.  Possible avalanche concerns listed below.

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April 17, 2016 at 6:49 am

The Mt Shasta Avalanche Center has closed it's doors for the winter season. We will continue to update climbing and route conditions throughout the 2016 season on our climbing route and overall climbing conditions pages. Springtime on Mt Shasta means you could encounter snow, rain, sun, clouds, hot, cold, extreme wind...all in a day. This variety of conditions can affect the avalanche danger greatly. Below are the most common avalanche problems in the spring.

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April 16, 2016 at 7:11 am

A couple inches of new snow on Wednesday & Thursday accompanied by high NW-N-NE winds have created small/medium sized cornices and small wind slabs on Mt Shasta. Cornices have been failing and causing point release avalanches on slopes below. Warming today will allow for human & natural trigger of lingering cornices and/or loose wet point release slides within new snow layers. Expect overall MODERATE danger to prevail for avalanche terrain near and above treeline. 

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April 15, 2016 at 6:36 am

Several inches of new snow combined with high wind from multiple directions has created MODERATE avalanche danger near and above treeline for potentially weak cornice formations and wind slab avalanches. Small/medium size cornices & wind loaded areas are likely to be encountered in avalanche terrain today and triggered by skier, climber or rider. Backcountry users need to be able to identify these wind loaded areas and avoid them. Avalanches could be large enough to bury a person. Use caution.

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April 14, 2016 at 7:00 am

Expect LOW avalanche danger for all elevations and aspects this morning. The forecast area received only 1 inch of new snow in the last 24 hours. Some isolated areas could see MODERATE danger this afternoon pending on how much more new snow the area receives today. Breezy westerly winds could also cause MODERATE danger in wind loaded areas. Small, isolated wind pillows/pockets/slabs are possible near and above treeline on S-SE-E-NE-N aspects.

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April 13, 2016 at 6:29 am

Overall, LOW avalanche danger exists for all elevations and aspects today. 
A winter storm advisory is in effect for later today, tonight and tomorrow. Increasing southwest winds (40-50 mph above treeline) with 5-10 inches of new snow is expected over the next 48 hours. New wind and storm slabs are certain and the avalanche danger will rise as new snow accumulates on top of our firm, melt/freeze snowpack. 

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April 12, 2016 at 6:43 am

Overall, LOW avalanche danger exists for all elevations and aspects. Normal caution advised.
A cooling trend will keep significant loose wet slides on the rack today. Above 10,000 feet, new snow from last night likely did not accumulate enough to cause wind/storm slab concern. 
Be cautious of falling rime ice off exposed rocks. Lightening activity on the mountain is also a serious hazard. Do not climb into a white out and/or ascend the mountain during electrical storms.

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April 11, 2016 at 6:38 am

Overall, LOW avalanche danger exists for all elevations and aspects. Normal caution advised.
Cooler temperatures and clouds will keep loose wet slides on the rack. New snow from this past weekend likely did not see enough accumulation to cause trouble for backcountry users. 
Be cautious of falling rime ice off exposed rocks. Lightening activity on the mountain is also a serious hazard. Do not climb into a white out and/or ascend the mountain during electrical storms.

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April 10, 2016 at 6:30 am

LOW avalanche danger exists for all elevations and aspects. Pockets of MODERATE danger may exist above treeline at 10,000 feet and up where new snow associated with yesterday's thunderstorms may have developed wind slabs.  Due to lack of observations at those elevations the size, distribution, and sensitivity of wind slabs to trigger is not known. Loose wet snow instabilities, though unlikely, may be found near and below treeline slopes 37 degrees and steeper. 

 

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April 9, 2016 at 6:37 am

Warm overnight temperatures contributed to poor re-freeze once again. However, mostly cloudy skies with locally blustery winds and some light precipitation will keep avalanche danger LOW for all elevations and aspects today.  If any loose wet snow instabilities occur, though unlikely, it will be during the afternoon on south to southeast aspects on slopes 35 degrees and steeper. Roller balls and loose, heavy, wet snow is the best clue indicating larger loose wet slides are possible.  

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April 8, 2016 at 6:20 am

Poor overnight re-freeze continues however increasing clouds, cooling temperatures and wind will help keep loose wet slides at bay today. LOW avalanche danger this morning exists for all aspects and elevations. Pockets of MODERATE danger may be encountered this afternoon for loose wet avalanches primarily on south and southeast facing slopes steeper than 35 degrees. Roller balls and loose, heavy, wet snow on sunny aspects is the best clue indicating larger loose wet slides are possible.  

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April 7, 2016 at 6:42 am

Today represents the best chance of loose wet instability for the week. Poor overnight re-freeze and warming temperatures have reached their zenith. LOW avalanche danger this morning will rise to MODERATE with pockets of CONSIDERABLE this afternoon for loose wet avalanches on S-SE-S-SW facing slopes steeper than 35 degrees. Roller balls and loose, heavy, wet snow on sunny aspects is the best clue indicating larger loose wet slides are possible.  

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April 5, 2016 at 6:42 am

LOW avalanche danger exists for all elevations and aspects across the forecast area this morning. MODERATE danger will develop through the afternoon as the sun softens snow on E-SE-S-SW aspects on slopes 35 degrees and steeper below 10,000 feet.  Human trigger of loose wet snow instabilities will be possible.  Poor overnight refreeze near and below treeline may elevate potential for loose wet avalanches.
THIS ADVISORY EXPIRES ON APRIL 7th @ 7 AM

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April 4, 2016 at 6:39 am

For this morning LOW avalanche danger exists while snow surfaces remain firm at all elevations and aspects. Areas of MODERATE danger may form as the sun softens the snow on E-SE-S-SW aspects below 10,000 feet.  Human trigger of loose wet snow instabilities may become possible on sun exposed slopes 35 degrees and steeper.  Distribution of loose wet instabilities will vary due to slighly cooler temperatures and moderate winds.
Climbers, be cautious for falling rime ice, firm and smooth snow.

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April 3, 2016 at 7:00 am

LOW avalanche danger exists for all elevations and aspects this morning. Pockets of MODERATE danger will form for loose-wet related instabilities on sun exposed slopes 35 degrees and steeper on E-SE-S-SW aspects below 10,000 feet.  Distribution of loose wet snow avalanche activity will be limited today due to increasing cloud cover, cooling temperatures and light winds.
Falling rime ice off exposed rocks and smooth, slide for life conditions exist on Mt Shasta. BE PREPARED.

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April 2, 2016 at 6:54 am

LOW avalanche danger will exist for all elevations and aspects this morning. MODERATE danger will form for loose-wet related instabilities on sun exposed slopes 35 degrees and steeper on E-SE-S-SW aspects below 10,000 feet.  Poor overnight refreeze and continued warm temperatures will encourage surface snow to remain soft and potentially unstable. Distribution of loose wet snow avalanche activity may be limited today by cloud cover and light winds.  Look for clues such as roller balls, pinwheels, and small point releases.

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April 1, 2016 at 6:35 am

This morning, LOW avalanche danger will prevail for all elevations and aspects. As daytime warming occurs, MODERATE danger is likely for loose-wet related instabilities on sunny slopes. Aspects E-SE-S-SW below 10,000 feet will host the best chance for human triggered loose-wet rollerballs, pinwheels and perhaps a larger point release loose wet slide. Some natural loose wet activity is possible today.  Calm winds and warm temperatures will persist, allowing for high solar gain on the snowpack.

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March 31, 2016 at 6:25 am

This morning, LOW avalanche danger will prevail for all elevations and aspects. As daytime warming occurs, MODERATE danger is likely for loose-wet related instabilities on sunny slopes. Aspects east, southeast, south and southwest below 10,000 feet will host the best chance for human triggered loose-wet rollerballs, pinwheels and perhaps a larger point release loose wet slide. Calm winds and warm temperatures will persist through the week. ​

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