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Avalanche Forecast

Archived

Apr 21st, 2019–Apr 22nd, 2019

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

South Coast.

The likelihood of loose wet avalanches will increase as rain saturates the snowpack.

Confidence

Moderate -

Weather Forecast

SUNDAY NIGHT: Cloudy, clear and isolated showers, moderate south wind, treeline temperature +3 C, freezing level 1400 m.

MONDAY: Rain, 15-25 mm by days end, moderate southwest wind, treeline temperature +2 C, freezing level 1800 m.

TUESDAY: Cloudy with isolated showers, light northeast wind gusting to 45 km/h, treeline temperature +3 C, freezing level 1700 m.

WEDNESDAY: Mix of sun and clouds, light to moderate northwest wind, treeline temperature +4 C, freezing level 2100 m.

Avalanche Summary

There have been no recent avalanche reports, but it is expected that a loose wet avalanche cycle occurred sometime Thursday-Friday during the last storm.

If you have any recent observations during your travels, we would greatly appreciate it if you posted a photo or any other information to the Mountain Information Network (MIN). Thanks!

Snowpack Summary

The last storm dropped over 60 mm of rain to mountain top, saturating the snowpack. The snow surface may freeze into a crust overnight but should rapidly moisten during daytime warming, particularly with the input of sun or rain. The snowpack is rapidly melting at treeline and below.

More rain to mountain top is expected to fall through Monday further saturating and deteriorating the snowpack.

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.