Avalanche Forecast
Issued: Apr 1st, 2017 4:20PM
The alpine rating is Storm Slabs and Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
High -
Weather Forecast
Overnight: Freezing levels down to 1300 metres by morning, with moderate northwest winds and the chance of a few flurries. Sunday: Mix of sun and cloud with light westerly winds and some convective flurries during the day and 5-8 cm in the evening. Monday: Re-freeze down to near valley bottoms, followed by light winds and cloudy skies with a chance of convective flurries. Tuesday: Good freeze followed by clear skies and light winds.
Avalanche Summary
No new avalanches reported on Saturday. Numerous storm slab avalanches up to size 2.5 reported from explosives control on Friday, as well as loose wet avalanches released by ski cuts up to size 1.5. Numerous storm slab and loose wet avalanches were reported from the Fernie area on Thursday. One natural cornice fall was size 3.0, and pulled a storm slab from the slope below. There is concern for storm slabs to continue to be reactive to human triggering if there is little or no re-freeze before another warm day on Saturday.
Snowpack Summary
10cm of new snow is sitting on the newly developed March 31st melt-freeze crust. This crust has been reported to be knife hard and 5cm thick at higher elevations, tapering down to pencil hard and 3cm thick at 1200 metres. The earlier March crust is now down 40-100 cm. The December facets and November rain crust are buried deep, but they did not become reactive during the latest period of warm weather, rain, and strong solar radiation.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Cornices
Aspects: North, North East, East, South East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 2nd, 2017 2:00PM