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Avalanche Forecast

Archived

Nov 30th, 2013–Dec 1st, 2013

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

Northwest Inland.

Snowfall in this region has been sparse.  Data reports indicate the snowpack is below the seasonal average.  If you are out in the mountains, have a look in the snow and tell us what you find. Send reports to: [email protected]

Confidence

Fair - Forecast snowfall amounts are uncertain

Weather Forecast

Sunday: No precipitation in the forecast. winds 20 gusting to 60 km/h and temps dropping close to -10 in the valleys as an arctic cold front descends from the YukonMonday: No precipitation. Temps down to -13c in the valleys. Arctic outflow winds from the north 20 to 60 km/h.Tuesday: No Precipitation, cold dry arctic are will persist for the remainder of the week.

Avalanche Summary

No reports of avalanche activity to this point.

Snowpack Summary

Wide variations in snowpack depth and structure exist throughout the region. Snow pillow data indicates that snowfall to date is less that previous seasonal averages. Many below tree line areas have been below the threshold for avalanches up to this point. The exception may be recently wind loaded pockets at tree line and higher elevations. Slopes with enough snow to ride may be the hazard areas.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.