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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 16, 2018 at 7:00 am

The avalanche danger is LOW. Shallow wind slabs may have recently formed on N-NE-E-SE-S aspects above 9,000ft on Mount Shasta. Expect a break today and tomorrow before the active weather pattern returns Thursday.

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January 15, 2018 at 7:00 am

LOW avalanche danger and generally safe avalanche conditions exist. Shallow snowpack hazards are still problematic. A series of storms beginning tonight will bring changing conditions throughout the week.

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January 14, 2018 at 6:43 am

LOW avalanche danger exists at all elevations. Falling rime ice will be a significant hazard above treeline on Mount Shasta today. A series of storms beginning tomorrow night will bring snowfall and changing conditions throughout the week.

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January 13, 2018 at 5:31 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 below treeline. Use extreme caution on steep slopes at upper elevations where firm snow surfaces are widespread. Falling rime ice will be a serious hazard today with warming temperatures.

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January 12, 2018 at 6:32 am

LOW avalanche danger exists at all elevations. Isolated wind slabs may exist above 9000 ft on N-NE-E-SE-S aspects. Be aware of falling rime ice. Wear a helmet. Smooth, firm snow surfaces exist on some slopes. A long slide is possible without immediate self arrest. Know how to use your ice axe and crampons.

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January 11, 2018 at 6:26 am

LOW avalanche danger exists at all elevations. Isolated wind slabs may exist above 9000 ft on N-NE-E-SE-S aspects. Be aware of falling rime ice. Wear a helmet. Smooth, firm snow surfaces exist on some slopes. A long slide for life is possible without immediate self arrest. Know how to use your ice axe and crampons.

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January 10, 2018 at 6:24 am

LOW avalanche danger exists at all elevations. Isolated wind slabs may exist above 9000 ft on N-NE-E-SE-S aspects. Be aware of falling rime ice.

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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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