Avalanche Forecast
Issued: Mar 18th, 2013 10:42AM
The alpine rating is Wind Slabs, Loose Wet and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Timing or intensity of solar radiation is uncertain on Tuesday
Weather Forecast
Monday night: Light snow. Moderate NW winds. Alpine temperature near -15.Tuesday: No snow. Sunshine. Moderate SW winds. Alpine temperature near -10.Wednesday: Moderate to heavy snow (15-25 cm). Strong to extreme SW winds. Alpine temperature near -4.Thursday: Light snow. Light SW winds. Alpine temperature near -10.
Avalanche Summary
On Monday, skiers triggered several small soft slabs and sluffs on wind-loaded or steep terrain. On Sunday, a natural cycle to size 2.5 was observed in the Bugaboos on a variety of aspects in the alpine.
Snowpack Summary
New snow was shifted into reactive slabs by strong SW-NE winds on Monday. Deep and cohesive storm slabs which formed last week are slowly gaining strength, but are not yet fully settled. A weak layer of surface hoar and/or a crust sits about 50-120 cm below the surface. Itâs of most concern in the alpine. (At low elevations, itâs likely to be difficult to trigger underneath a supportive crust). This layer will probably linger, with âlow probability/ high consequenceâ type character. A facet/crust layer sits at the base of the snowpack in some places.
Problems
Wind Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Aspects: North, North East, East, South East, South.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 19th, 2013 2:00PM