Natural avalanche activity will taper off but human triggered avalanches will remain likely
Stay disciplined and dial back your terrain choices.
Approximately 20-40cms of recent storm snow has buried a significant weak layer. This layer will remain reactive and has the potential for wide propagation.
Avalanche control at Rogers Pass produced avalanches up to size 3 running full path.
While natural avalanche activity may taper off as temps drop, the slab sitting over surface hoar will be primed for human triggering.
Neighbouring operations are reporting that the Jan 7th/9th surface hoar is starting to become reactive as a slab builds on top of it. This is the layer to watch out for.
Recent 20-40cms of storm snow buries widespread surface hoar and sun crusts(on steep solar aspects).
Below this interface are firm, wind pressed surfaces in exposed areas and low density sugary snow in sheltered areas.
The Jan 7th layer is down 30-60cm, comprised of surface hoar (all aspects) and/or a thin crust on steep S aspects. The mid and lower snowpack are well bonded and strong.
Scattered flurries Saturday night, with a clearing/cooling trend starting Monday
Tonight Flurries 5cms. Alp Low: -16°C. Ridge wind SW 25-45 km/h. Freezing level (FZL) at valley bottom(VB)
Sun Cloud & sun with flurries. Alp high -15°C. Ridge wind S 15-25km/hr, FZL VB
Mon Cloud & sun with flurries. Alp high -17°C. Ridge wind SE 20km/h.
Tues Mix of sun & cloud Precip: nil. Alp high -19°C. Ridge wind E 15km/h.
