Avalanche Forecast
Issued: Mar 28th, 2014 11:57AM
The alpine rating is Wind Slabs, Persistent Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Wind effect is extremely variable
Weather Forecast
Synopsis: Zonal flow directs the bulk of the moisture stream at the South Coast while the North Coast remains high and dry.Saturday: Freezing Level: 500 - 1000m Precipitation: Trace; Treeline Wind: Light, E | Ridgetop Wind: Moderate, SESunday: Freezing Level: 200 - 800m Precipitation: Nil; Treeline Wind: Light, SE | Ridgetop Wind: Light, VariableMonday: Freezing Level: 400 - 1200m Precipitation: Nil; Treeline Wind: Light, Variable | Ridgetop Wind: Light, Variable
Avalanche Summary
No new avalanches were reported Thursday.
Snowpack Summary
Strong Easterly winds have been reported to have caused intense wind transport of the recent storm snow, developing pockets of wind slab on various aspects in the alpine and at treeline. Forecast cool temperatures are not expected to promote much settling or bonding of the near surface layers, and probably not much change to the persistent weak layers. The deeply buried persistent weak layers continue to provide moderate to hard sudden planar results in snow profile tests, but may be deep enough to require a heavy load for triggering. The March weak layer is a combination of hard wind-scoured slab surfaces in exposed terrain, facets and/or surface hoar in sheltered and north aspects, and sun crust on steep solar aspects. This layer is widespread throughout the forecast region and is now buried close to 150cm in most parts of the area. A late January/early February crust/facet/surface hoar combo is now buried 200 cm or more.
Problems
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 29th, 2014 2:00PM