Avalanche Forecast

Archived

Mar 9th, 2013–Mar 10th, 2013

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Regions

Little Yoho.

Touchy slabs still overlie a mainly weak, faceted base east of the Divide.

Weather Forecast

The clouds move in tomorrow with very light flurries developing over southern areas of the region (south of Hwy 1). Winds will pick up in the moderate range from the west and temp's remain cool.

Snowpack Summary

The storm snow from last weekend seems to be bonding reasonably well to the underlying snow surfaces. However, in areas of thinner snowpack (east of the Divide) and on steeper, southern aspects, the storm slab remains touchy. Human triggering to size 3 is possible, if you hit the weak spot.

Avalanche Summary

Small loose, wet slides were observed from steep solar aspects this afternoon. Whumphing / settling was also observed along ridge features in shallow snowpack areas east of the Divide.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

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.