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Avalanche Forecast

Archived

Apr 18th, 2019–Apr 19th, 2019

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
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 snowpack has been pounded by substantial rain. Loose wet avalanche activity will remain likely as the rain continues into Friday morning.

Confidence

High -

Weather Forecast

THURSDAY NIGHT: Cloudy with rain, accumulation 20 to 30 mm, moderate to strong southwest wind, treeline temperature 4 C, freezing level 2500 m dropping to 1700 m.

FRIDAY: Cloudy with morning rain and afternoon clearing, accumulation 5 to 10 mm, moderate west wind, treeline temperature 2 C, freezing level 1700 m.

SATURDAY: Clear skies, light north wind, treeline temperature 3 C, freezing level 1900 m.

SUNDAY: Mix of sun and clouds, light southwest wind, treeline temperature 3 C, freezing level 2000 m.

Avalanche Summary

No avalanches were reported in the region on Wednesday. It is expected that avalanche activity increased for upper elevations on Thursday due to substantial rainfall. 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 50 mm of rain fell to the mountain tops on Thursday and Thursday night. Another 5 to 10 mm is expected Friday morning, which will fall as rain everywhere except potentially snow at the very top of the highest mountains. 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.