Avalanche Forecast
Issued: Mar 10th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Storm Slabs.
jonas hoke,
The avalanche danger will increase into the weekend, with snowfall forecast to begin Friday afternoon, giving a total accumulation of up to 25cm by Sunday.
Summary
Weather Forecast
A frontal system gives moderate snowfall, warming temps, and strong SW wind into the weekend
Tonight: Clear periods, Alpine low -13*C, light SW ridgetop wind
Fri: Flurries turning to snowfall (10cm), High -6*C, moderate SW wind, freezing level (FZL) 1100m
Sat: Flurries (10cm), Low -9*C, High -7*C, strong SW wind, FZL1300m
Sun: Flurries (5cm), FZL 1500m
Snowpack Summary
Incoming snow will cover a variety of surfaces - a crust on steep solar aspects (widespread below 1500m), settled pow in shaded/sheltered areas, and wind effect in the alpine from Northerly switching to SW winds. The Feb 26th interface (small surface hoar or suncrust) lingers down 30-40cm but has not been reactive recently.
Avalanche Summary
Tuesday - there was a near miss in Loop Brook drainage, when a rider remote triggered a size 2.0 slab at ridge top, NE asp, MCR.
A near miss from a cornice fall in MacDonald gully #11.
And, an MCR reporting isolated wind slabs in the Illecillewaet drainage.
Confidence
Forecast snowfall amounts are uncertain
Problems
Wind Slabs
Fresh slabs may build through out the day with incoming SW winds.
Previous pockets of wind slab were reactive recently where loaded on to a sun crust by Northerly winds.
- Pay attention to overhead hazards like cornices which could trigger slabs.
- Use caution above cliffs and terrain traps where small slab avalanches may have severe consequences.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Storm Slabs
Storm slabs will likely begin to form Friday evening, becoming the primary problem by Saturday.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 11th, 2022 4:00PM
