Avalanche Forecast

Moderate - Freezing levels are uncertain on Monday

MONDAY: Sunny and warm. Freezing level near 2700 m. Alpine high near +7. Light winds. TUESDAY: Sunny and warm. Freezing level near 1800 m. Alpine high near 0. Light winds. WEDNESDAY: Mix of sun and cloud. Freezing level near 1600 m. Alpine high near -1. Light winds. More details can be found in the Mountain Weather Forecast.

Several large cornice falls were triggered naturally and with explosives on Saturday. Some of these triggered size 2 slabs on slopes below. There is a trend of cornice falls increasing in size and frequency as the warm weather continues. Loose wet avalanches to size 2 were also failing naturally on sunny aspects on Saturday.

Warm temperatures are weakening surface snow layers and making cornices extra touchy. The warmth can also penetrate into more deeply buried weak layers. Minimal overnight freeze is expected, meaning warming is likely to affect the snowpack early in the day.Refrozen crusts may be found on all aspects below about 1800-2000 m; and on sunny aspects in the alpine in some places. These may break down through the day. Cold, dry and possibly wind-affected snow may still be found on various aspects in the alpine. Variable instabilities exist in recent storm snow layers. Two weak layers exist in the upper 2 m of the snowpack at and below treeline. These layers consist of surface hoar (feathery crystals) in more sheltered areas and a crust on solar aspects and on all aspects below 1600m.In the lower snowpack, a crust/facet (sugar snow) layer is now over 2 m deep. This layer may still be reactive to heavy loads (such as a cornice fall) in isolated areas.