Avalanche Forecast
Issued: Feb 20th, 2015 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
patrick jerome,
Avalanche Canada
The main concerns at Treeline and above will be the recent cornices and wind scoured shallow spots from last week's storm. Watch for overhead hazard. Cornices are huge triggers and it is important to keep in mind with abrupt temperature fluctuations.
Summary
Weather Forecast
A upper ridge of high pressure will build back in over the weekend and stick around for the remainder of the week. Cold temps will emerge Saturday morning and then temperatures will moderate shortly afterwards. Light to no precipitation and light winds for the beginning of next week.
Snowpack Summary
The snowpack is a mix of surfaces and depths. Deep facetted weaknesses may be present in isolated locations at TL and above where the snowpack is exposed to the wind and sun. From treeline down, breakable melt-freeze crust transitions to bullet proof melt-freeze crust. The skiing is rugged below 2100 meters so expect challenging conditions.
Avalanche Summary
No new avalanches were reported today in Little Yoho.
Confidence
Problems
Wind Slabs
Recent winds from many directions have formed wind slabs that are susceptible to human triggering. Recent cornice growth is also a concern as these may trigger any deep weak layers that are present in the snowpack.
- Use caution in lee areas. Recent wind loading have created wind slabs.
- Extra caution needed around cornices with current conditions.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Watch for thin, shallow and/or rocky areas where facetted layers may be triggered.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 21st, 2015 4:00PM
