Avalanche Forecast
Issued: Jan 6th, 2013 9:08AM
The alpine rating is Storm Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to variable snowpack conditions for the entire period
Weather Forecast
Overnight and Monday: Flurries overnight becoming snow in the morning should bring a total of 5-10 cms. Southwest winds are expected to build to moderate with strong gusts during the morning snow fall. Winds should become light Westerly in the afternoon.Tuesday: Expect flurries with little to no accumulation combined with moderate Westerly winds.Wednesday: Light snow developing during the day combined with light Northwest winds.
Avalanche Summary
No new avalanches reported.
Snowpack Summary
Thin layers of dry cold snow are accumulating each day. In some areas this new snow has been transported into wind slabs. The recent cold and dry weather has caused the surface snow to facet and become weakly bonded. This weak bonding has resulted in dry loose snow sluffing out of steep terrain. Forecast new snow on top of this weak unconsolidated surface should continue to sluff easily. The base layers of the shallow snowpack have also facetted and become weaker. The relatively strong mid-pack has formed a bridge above the deep facets. The forecast storm over the next few days may create a storm slab above the weak surface layers, and/or over-load the mid-pack bridge. This type of incremental loading requires frequent assessments of the amount of loading above the weak layers, and whether that load will react as a consolidated slab.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 7th, 2013 2:00PM