Large Areas of Glacier National Park Are CLOSED For Avalanche Control Using EXPLOSIVES. For access information visit pc.gc.ca/skirogers or call (250) 837-7500
30cm of snow over the past 48hrs is settling into a soft slab with warm winters temps (-1 to -5). The Jan 4 surface hoar is down ~35cm and found to be up to 15mm in size. If triggered, small avalanches could initiate deeper layers.
The Dec 15 and Dec 27 surface hoar layers are widespread around tree line and buried ~80cm and ~50cm respectively. Warmer temps have promoted settlement of the upper snow pack, these layers may become reactive with the recent storm snow.
Deep persistent slabs are best managed by:
Cornices are best managed by:
Expect cloudy skies with periods of moderate snow flurries with accumulations up to 5cm over the day. The alpine high will be -5 with freezing levels reaching 1400m. Winds will be from the southwest in the 20km/hr range. Depending on which forecast you drink your morning coffee with, we are expected to receive 15-30cm of snow by Tuesday morning.
30cm of storm snow now buries the Jan 4 surface hoar and a thin crust on solar aspects. The Dec 27 surface hoar is down ~50cm and the Dec 15 surface hoar is down ~70cm and still producing whumphing, cracking and small avalanches on unsupported terrain features at tree line and below.
Numerous sz 1.5-2.5 avalanches observed in the past two days along the highway corridor from steep terrain.
Test results show that the Jan 4 and Dec 27 surface hoar layers are becoming reactive, producing moderate sudden planar fractures in some profiles.