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Archived Avalanche Advisories from the Mount Shasta Avalanche Center

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.

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Date the advisory was published: Bottom Line
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January 9, 2018 at 7:00 am

MODERATE avalanche danger exists above treeline, while the avalanche danger is LOW near and below treeline. New snow accompanied by continued southerly winds have recently formed wind slabs above 8,000ft on N-NE-E-SE aspects. In these specific areas, wind slabs will be sensitive to human triggering.

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January 8, 2018 at 6:59 am

The avalanche danger will rise to MODERATE above treeline by this afternoon. Strong southerly winds and heavy snowfall are expected over the next 24 hours. Human triggered wind slab avalanches will be possible on steep, recently wind loaded slopes above 8,000ft on Mount Shasta. LOW avalanche danger exists near and below treeline.

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January 7, 2018 at 7:01 am

LOW avalanche danger exists at all elevations. Isolated pockets of shallow wind slab may exist in leeward terrain above 9,000ft. Watch for falling rime ice if you venture into the high alpine on Mount Shasta today.

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January 6, 2018 at 6:24 am

Above treeline on Mount Shasta, the avalanche danger is MODERATE. Human triggered wind slab avalanches are possible on steep, recently wind drifted slopes, primarily above 9,000 feet. Natural avalanches are unlikely.

 Near and below treeline offers LOW avalanche danger with shallow snowpack hazards.

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January 5, 2018 at 6:57 am

Above treeline on Mount Shasta, the avalanche danger is MODERATE. Human triggered wind slab avalanches are possible on steep, recently wind drifted slopes. Watch out for icy patches in select areas on the upper mountain. Near and below treeline offers LOW avalanche danger with shallow snowpack hazards.

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January 4, 2018 at 6:53 am

Above treeline on Mount Shasta, the avalanche danger is MODERATE. Human triggered avalanches are possible on steep, recently wind drifted slopes and particularly on slopes facing the north half of the compass.  Near and below treeline offers generally LOW avalanche danger with continued shallow snowpack hazards. Watch out for icy slopes in select areas on the upper mountain.

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January 3, 2018 at 6:12 am

LOW avalanche danger and generally safe avalanche conditions exist. Sparse coverage and icy slopes present significant travel hazards in the backcountry. Monitor changing conditions Thursday and Friday with rain and snow expected.

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January 2, 2018 at 6:50 am

LOW avalanche danger and generally safe avalanche conditions exist. Sparse coverage and icy slopes present significant travel hazards in the backcountry. 

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January 1, 2018 at 6:43 am

LOW avalanche danger and generally safe avalanche conditions exist. Sparse coverage and icy slopes present significant travel hazards in the backcountry. 

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December 31, 2017 at 6:50 am

LOW avalanche danger and normal caution continue. Generally safe avalanche conditions exist. Sparse coverage and firm and icy slopes present significant travel hazards in the backcountry. 

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December 30, 2017 at 6:06 am

LOW avalanche danger and normal caution continue. Generally safe avalanche conditions exist. Sparse coverage and firm and icy slopes present significant travel hazards on Mt Shasta. 

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December 29, 2017 at 6:00 am

LOW avalanche danger and normal caution continue. Generally safe avalanche conditions exist. Sparse coverage and firm and icy slopes present significant travel hazards on Mt Shasta. 

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December 28, 2017 at 6:44 am

LOW avalanche danger and normal caution continue. Generally safe avalanche conditions exist. Sparse coverage and firm and icy slopes present significant travel hazards on Mt Shasta. 

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December 27, 2017 at 6:16 am

Avalanche danger is LOW at all elevations. Normal caution is advised. Sparse coverage and firm icy slopes present significant travel hazards in the backcountry.

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December 26, 2017 at 7:00 am

LOW avalanche danger and normal caution continue. Generally safe avalanche conditions exist. Sparse coverage and firm and icy slopes present significant travel hazards in the backcountry.

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December 25, 2017 at 7:00 am

LOW avalanche danger exists on all aspects and at all elevations. Normal caution is advised. Many shallow snowpack hazards exist. Use extreme caution in steep, upper elevation terrain where icy and firm snow surfaces are widespread.

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December 24, 2017 at 6:45 am

Triggering an avalanche is unlikely, and LOW avalanche danger exists at all elevations. Watch for unstable snow on isolated terrain features. Shallow snowpack hazards are still problematic. Climbers and ski mountaineers should use extreme caution on steep slopes at upper elevations where icy and firm snow surfaces are widespread. 

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December 23, 2017 at 6:28 am

Avalanche conditions are generally safe in the backcountry and LOW avalanche danger remains for all aspects & elevations. Evaluate terrain carefully, identify where avalanche problems exist and avoid those areas. Watch for unstable snow on isolated terrain features.



Scoured ridgelines and icy surfaces dominate the upper mountain along with many rocks protruding from the thin snowpack. Climbers and ski mountaineers, use extreme caution on steep slopes. Carry an ice axe, crampons and helmet and know how to use them.

 

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December 22, 2017 at 6:38 am

For today, expect LOW avalanche danger on Mt Shasta for all elevations and aspects. Evaluate terrain carefully, identify where avalanche problems exists and avoid those areas. 



Scoured ridgelines and icy surfaces dominate the upper mountain along with many rocks protruding from the thin snowpack. Climbers and ski mountaineers, use extreme caution on steep slopes. Carry an ice axe, crampons and helmet and know how to use them.

 

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December 21, 2017 at 6:22 am

For today, expect overall LOW avalanche danger on Mt Shasta. Watch for small, isolated wind slabs on leeward terrain near and above treeline. Scoured ridgelines and icy surfaces still exist along with many hidden rocks protruding from the thin snowpack. 

 

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