Avalanche Forecast
Issued: Apr 15th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Cornices.
dsaly,
Avalanche Canada
Conditions are generally safe, but there are still isolated hazards from cornices and pocket wind slabs. Check out the newest forecaster blog as you plan your spring objectives.
Summary
Confidence
Weather Forecast
FRIDAY NIGHT: Mostly starry sky, light and variable wind, treeline temperatures dropping to -15 C.
SATURDAY: Mostly sunny, light wind, freezing level rising to 1400 m, treeline temperatures warm to -2 C.
SUNDAY: Mostly sunny, light wind, freezing level rising to 1500 m, treeline temperatures warm to -1 C.
MONDAY: Mix of sun and cloud and incoming flurries, increasing southeast wind, freezing level rising above 1600 m, treeline temperatures above freezing.
Avalanche Summary
Reports over the last week documented large cornice falls in alpine terrain, some of which have triggered large wind slab avalanches (size 2-2.5) on the slopes below. We suspect the reactivity of these wind slabs is diminishing under the current weather pattern, but cornices remain a concern.
Snowpack Summary
Recent wind from the northeast formed slabs on lee aspects at treeline and above, and a variety of wind-affected surfaces. 20-50 cm recent snow sits on a melt-freeze crust that exists on all aspects to at least 2000 m. A sun crust likely extends to mountain tops on solar aspects. Another prominent crust layer is found 40 to 70 cm deep.
Cornices are very large and exposure to slopes beneath them should be minimized, especially if the weather is sunny, warm, or windy.
Terrain and Travel
- Pay attention to cornices and give them a wide berth when traveling on or below ridges.
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Problems
Cornices
Cornices are very large this time of year and pose a hazard when travelling on and below ridges.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 16th, 2022 4:00PM
