Avalanche Forecast

Issued: Jan 26th, 2013 9:36AM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is moderate. Known problems include Storm Slabs.

Avalanche Canada triley, Avalanche Canada

Summary

Confidence

Poor - Timing, track, or intensity of incoming weather is uncertain on Sunday

Weather Forecast

Overnight and Sunday: Light Westerly winds with cooling temperatures overnight. Light snow fall is expected to begin Sunday evening. There is a chance of enhanced snowfall amounts up to 15 cms depending on the track of the system moving across the US border.Monday: Northwest winds are expected to start to build during the day as a warm front moves in from the NW. Freezing levels are expected to rise to about 1200 metres. Snow should start in the evening and continue as a trailing cold front follows.Tuesday: Continued unsettled weather with light snow and light Northwest winds. Alpine temperatures dropping to about -12.0

Avalanche Summary

Loose dry snow sluffing up to size 1.5 in steep terrain.

Snowpack Summary

A report from the Rossland Range stated that the freezing level went up to about 1700 metres on Friday, and that strong winds scoured most open terrain above 2000 metres. Recent snow fall amounts have been variable across the region. Some areas have about 30 cms that is reacting to light additional loads, and sliding on the weak surface hoar layer that was buried on the 23rd of January. Some other areas only had 10-15 cms with lighter winds, and the new snow has not formed a reactive storm slab. Due to this variability, it is difficult to rate the danger for the entire region.

Problems

Storm Slabs

An icon showing Storm Slabs
There is a lot of variability in the region. A soft storm slab has developed between 15-30 cms deep. Some areas have seen strong Westerly winds that scoured alpine terrain and developed some pockets of wind slab on North thru East aspects.
Avoid freshly wind loaded features.>Be cautious as you transition into wind affected terrain.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: Jan 27th, 2013 2:00PM