Avalanche Forecast
Issued: Jan 12th, 2015 4:29PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
grant statham,
Avalanche Canada
Despite the fact that it has not snowed since last week, we continue to be concerned about human triggered avalanches and are keeping our danger rating at Considerable. We believe any steep start zone could be triggered at this time.
Summary
Weather Forecast
A stable week ahead as the NW flow persists keeping the air cool with light winds. No snow in the forecast until Friday, and temperatures this week will range from -5 to -10. All told an uneventful week ahead for weather.
Snowpack Summary
Snowpack observations at 2200m on Mt. Field today (just below the last roll to the summit) indicate a 145cm snowpack with the Dec 18 surface hoar layer down 45cm and very prominent (moderate test results with a sudden planar shear). This layer remains prime for human triggering and continues to be slow to heal. Some wind effect on the snow surface.
Avalanche Summary
Flights over the park today with good visibility revealed a widespread natural avalanche cycle over the past 48-hours. Wide propagations at treeline and above up to size 3, many running to the bottom of the runout zones.
Confidence
Problems
Persistent Slabs
A persistent weak layer of surface hoar was observed again today at alpine elevations, down 50cm from the top. This layer continues to cause concern, and until it stabilizes then avoidance of steep avalanche starting zones is strongly recommended.
- Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 13th, 2015 4:00PM
