Avalanche Forecast
Issued: Mar 12th, 2013 8:05AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
ali haeri,
Parks Canada
Expect the avalanche hazard to rise with steady snowfall rates and increasing winds today. Loose avalanches may develop into storm slabs as the day progresses.
Summary
Weather Forecast
Southwesterly Pacific system forecast to bring moderate amounts of precipitation into Thursday with freezing levels to 1300m today rising to 1700m by Wednesday. Storm intensifying throughout the day.
Snowpack Summary
10-15cm lower density snow over a well settled mid pack above 1700m. Below 1700m the Mar 3 rain crust, 3-4cm thick, is down 10cm. The Feb 12 surface hoar is down 100 to 130cm.
Avalanche Summary
Yesterday: 1 Natural size 2.0 slab avalanche west of Rogers Pass summit on a south aspect
Confidence
Intensity of incoming weather systems is uncertain on Tuesday
Problems
Persistent Slabs
The surface hoar/crust layer from February is most likely to be triggered on solar aspects from shallow areas or from large triggers such as cornice falls resulting in large avalanches.
Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 13th, 2013 8:00AM
