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Avalanche Forecast

Archived

Apr 20th, 2019–Apr 21st, 2019

Alpine
Natural avalanches unlikely.
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.

Rain has saturated and settled the snowpack. Use caution on sunny slopes or during the heat of the day, loose wet avalanches remain a concern.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

SATURDAY NIGHT: Clear skies, light southwest wind, treeline temperature 3 C, freezing level 1700 m.

SUNDAY: Mix of sun and clouds, light south wind, treeline temperature 4 C, freezing level 1800 m.

MONDAY: Cloudy with rain, 20 mm by days end, moderate south wind, treeline temperature 2 C, freezing level 1800 m.

TUESDAY: Cloudy with isolated showers, light northeast wind, treeline temperature 4 C, freezing level 1900 m.

Avalanche Summary

No avalanche reports were available on Thursday and Friday, but it is expected that a loose wet avalanche cycle occurred during the 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

Over 60 mm of rain fell as rain to the mountain tops on Thursday into Friday, saturating the snowpack. The snow surface may freeze into a melt-freeze crust overnight but should rapidly moisten during daytime warming, particularly on southerly aspects under clear skies. The snowpack is rapidly melting below treeline.

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.