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Avalanche Forecast

Archived

Jan 19th, 2017–Jan 20th, 2017

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

Regions

South Coast.

Be alert to conditions that change with elevation. Lots of rain at lower elevations might mean lots of snow up high.

Confidence

High -

Weather Forecast

FRIDAY: Mainly cloudy with isolated flurries possible, moderate southeasterly wind and freezing level around 1200m.SATURDAY: Mainly cloudy with flurries in the afternoon bringing 5-10 cm, moderate southeasterly wind and freezing level around 1200m.SUNDAY: Mainly cloudy with flurries bringing another 5-10 cm, strong southeasterly wind and freezing level around 1200m.

Avalanche Summary

Recent reports have been limited by the inclement weather, but include evidence of natural wet loose avalanche activity up to Size 1.5.

Snowpack Summary

As of Thursday afternoon around 15cm of fresh snow above 1000 m was likely bonding well to the previous rain-soaked snow surface. At alpine elevations fresh wind slabs could be touchy. The mid and lower snowpack are well settled and stable.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.