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Avalanche Forecast

Archived

Mar 21st, 2017–Mar 22nd, 2017

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

South Coast.

Uncertainty exists with the freezing level in the coming days. Expect to see rain to mountain top except in the highest reaches of the region. In areas where the latest precipitation is falling as snow, the danger may be higher than shown

Confidence

Moderate - Freezing levels are uncertain on Thursday

Weather Forecast

WEDNESDAY: Wet snow or rain, accumulation 15-20cm / Moderate south wind / Alpine temperature 3 / Freezing level 1500mTHURSDAY: Wet snow or rain, accumulation 15cm / moderate south wind / Alpine temperature -1 / Freezing level 1000mFRIDAY: Snow and rain, accumulation 20-30cm / Moderate south wind / Alpine temperature 1 / Freezing level 1200m

Avalanche Summary

No recent avalanches have been reported in the region. Expect thin loose wet avalanches in the alpine and tree line elevation bands in the coming days. In the highest alpine areas reactive storm and wind slabs may be forming.

Snowpack Summary

Last weekend's storm delivered 20-30 cm of wet snow in alpine terrain and rain elsewhere. That wet snow has frozen and bonded to the previous surface in all but the highest terrain where isolated storm and or wind slabs may sit above a rain crust. High freezing level and continued precipitation over the coming days will start to break down the recent crust formation.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.