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Avalanche Forecast

Archived

Nov 18th, 2016–Nov 19th, 2016

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

Regions

Glacier.

Winter's Back! However early season hazards like rocks, trees and open creeks are prevalent below 1900m. There's still lots of winter left, ride conservatively out there!

Weather Forecast

Expect mainly cloudy skies today, without much precip, ridge top wind coming from the south east 10-20 kph & and freezing level at 1300m. Scattered flurries Saturday will bring 5 cm of new snow and freezing level is expected to rise to 1600m.

Snowpack Summary

35-55cm of new snow covers a thick supportive crust (Nov 13) with a moist near-isothermal snowpack below. Previous winds have transported this new snow and formed soft slabs in lee features at ridge top. Below 1900m snow depths are less than 50cm with many early season hazards (rocks, trees & open creeks!) lurking at or just below the surface.

Avalanche Summary

Natural avalanche activity has decreased with minimal minimal new snow and dropping temperatures. However with the clearing skies field teams observed previous avalanches up to size 2 from Mt Macdonald, Cheops and Jupitor. These avalanches occurred Tues-Wed on steep Northerly aspects and were triggered by the previous strong winds

Confidence

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.