Avalanche Forecast
Issued: Apr 13th, 2013 10:30AM
The alpine rating is Storm Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to variable snowpack conditions
Weather Forecast
Sunday:Â Overcast skies / Light northeast winds / Freezing level at 1100mMonday: Mix of sun and clouds / Light east winds / Freezing level at 1100mTuesday: Mix of sun and cloud / Calm winds / Freezing level at 1400m
Avalanche Summary
In recent days, avalanche control has produced slab avalanches to size 2. They occurred on northeast facing slopes at 2600m and higher, and likely failed on the early April surface hoar. In general, observations have become very limited. I would expect new wind slab activity in response to new snow and wind on Friday night.
Snowpack Summary
Variable snowfall on Friday night has created new storm/wind slabs, especially near ridge top. This has added to existing storm slab and wind slab problems at alpine and treeline elevations. A surface hoar interface is buried within the upper metre of the snowpack, mainly on high-elevation northerly aspects. It is still producing moderate, sudden results in snowpack tests, and these slopes should be treated with suspicion. On other slopes, recent storm snow overlies a crust, with a variable bond. At low elevations, previously rain-soaked snow is likely to now be refrozen and strong.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: North, North East, East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 14th, 2013 2:00PM