Avalanche Forecast
Issued: Apr 25th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet and Wind Slabs.
William Lawson,
Preserved powder remains on high North aspects providing great ski conditions.
Click the "More Spring Conditions details" link found below for information on various spring condition scenarios.
Summary
Weather Forecast
Clearing trend starting Monday will continue through the week. As this ridge of high pressure develops, upper elevation winds will increase. We can expect 2000m freezing levels Monday, though it might feel much warmer on Southerly aspects.
Snowpack Summary
10 to 25 cm of low density snow has buried crusts on all aspects to 2200 m and to ridge top on solar slopes. There are several persistent layers in the mid to lower snowpack that are likely only a concern on alpine north facing terrain where no crusts are found in the snowpack while temperatures remain cool.
Avalanche Summary
No new avalanche activity observed or reported Sunday. The clearing trend this week will increase the loose wet avalanche activity. This will likely begin with releases of surface snow above the crust and as temperatures increase later in the week we could see deeper loose wet avalanches.
Confidence
Problems
Loose Wet
As the clearing trend begins Monday we can expect to see an increase of loose wet avalanche activity. This will predominantly be on solar aspects though we could see activity on all aspects at lower elevations.
- Use caution on solar slopes if the snow is moist or wet.
- Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.
Aspects: South East, South, South West, West.
Elevations: All elevations.
Likelihood
Expected Size
Wind Slabs
Increase winds Monday will begging to develop wind slabs at upper elevations. We have some uncertainty on how the new load will bond with the current buried crust .
- Use caution in lee areas. Recent wind loading has created wind slabs.
Aspects: North East, East, South East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 26th, 2021 4:00PM
