A warm air mass sits atop Rogers Pass until Wednesday, preventing the snowpack from refreezing at night.
Without a surface crust to hold the snowpack together, natural avalanche activity is expected at all elevation bands.
Avoid any exposure to overhead hazard and stick to conservative terrain.
Cornices will become more reactive as temperatures continue to rise with no overnight recovery. Give cornices a wide berth and avoid traveling on slopes below these large triggers.
Expect warm days with no overnight freeze/ recovery until Wed evening. Avalanche hazard will rise as the heat percolates deeper in to the snowpack.
Recent storm snow has settled into a wet slab perched atop the mid-April crust. These wet slabs will become active as strong sunshine and warm temps cook the mountain slopes.
Natural wet loose and wet slab avalanches up to size 2 observed in the highway corridor on Monday.
Field team in Connaught creek observed a natural size 2 wet loose avalanche on Sunday AM.
Two reports of skier triggered size 2 slab avalanches on Friday. One from from Quartz creek, and a second on the Thorington.
We are currently experiencing all melt no freeze spring conditions.
Up to 40cms of recent storm snow has become moist/wet on the surface of the snowpack. Below this recent snow, a crust can be found in most locations.
The mid - lower snowpack is well settled but we expect to see some large avalanches as the warm temperatures permeate the snowpack.
Warmth until Wed midday. No overnight refreeze until then.
Tonight Clear. Alpine Low 6°C. Freezing level (FZL) 2900m. Ridgetop wind SW 15-40km/h.
Tues Sun/cloud, isolated showers. Alp High 9°C. Wind W 15-35km/h. FZL 3000m.
Wed Cloudy, scattered flurries, risk of T-storm, 5cm. High 3 °C. Wind N 15-55km/h. FZL 2900m
Thurs Cloud, sunny periods, isolated flurries. Alp High -5°C. Wind NE 20-50km/h. FZL 1700m.
