There is a thick slab over a structurally weak snowpack at all elevations. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above where a failure can propagate to deeper areas and cause large avalanches.
Small isolated new wind slabs are present in the alpine. Winds from several days ago have also created firm wind slabs which are now buried. Probe for these buried hard layers especially near ridge crests and in cross loaded features.
Deep persistent slabs are best managed by:
Cornices are best managed by:
Temperatures falling overnight to reach -15 by Wednesday with highs around -10. Possibility of up to 10 cm of new snow on Wednesday, but this looks to be in eastern areas only. Return to sunny skies for Thursday.
25cm of recent storm snow has formed isolated soft slabs near ridge crests in the alpine. Persistent problems remain with facetting in the lower half of the snowpack. This is common to all areas and may be found at varying depths. Triggering is more likely in thin areas or near rocky outcrops.
On Tuesday, skiers triggered a size 1.5 onto another group below in Lipalian 3 at Lake Louise. A large natural avalanche was reported on the North Face of Mt Temple today.