Avalanche Forecast
Issued: Jan 26th, 2012 9:24AM
The alpine rating is Wind Slabs and Storm Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing, track, or intensity of incoming weather is uncertain
Weather Forecast
Friday: Snow overnight Thursday should give way to flurries on Friday. Freezing level near valley floor. Light to moderate winds.Saturday: Moderate to heavy precipitation with the freezing level climbing to 1200m by afternoon. Strong to gale westerly winds. Sunday: Light to moderate snow, tapering off by afternoon. Moderate to strong westerly winds. Freezing level dropping by afternoon.
Avalanche Summary
We haven't received any reports of avalanches from the region, but expect some natural activity to have occurred.
Snowpack Summary
Wind slabs and storm slabs continue to build above a weak facet layer which formed during the brutal cold of mid-January and was buried around January 20th. Avalanches have begun to release on this layer in the Coastal regions, and it's probably just a matter of time before a critical load builds up above it in further inland. Tests on this layer in the Seaton Basin have produced moderate, sudden planar ("pops") shears, indicating that an avalanche releasing on this layer could propagate widely. In the Howsons, the facet layer was buried with very little wind effect in the alpine, at the same time that the northeast outflow winds were howling in Terrace. Rising temperatures and snowfall during the weekend will increase the likelihood of storm slab avalanches, which could be very large. In shallow snowpack areas, a weak, "rotten" snowpack has been observed.
Problems
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 27th, 2012 8:00AM