Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Mar 6th, 2021–Mar 7th, 2021

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Cooler temperatures and less solar input will further help minimize the avalanche hazard on Sunday. So far we have not seen much evidence of the same persistent problems that are active in the Banff and Kootenay regions but use caution in thin areas.

Weather Forecast

Clouds and light flurries are forecast for Sunday with a few cm's of accumulation starting late in the afternoon and evening. Alpine winds will be in the high end of Moderate from the SW which will help keep things cool but could move snow in the alpine. Treeline temperatures will be around -5 with valley bottom temperatures just above freezing.

Snowpack Summary

10-15 cm of new snow sits over a crust on solar aspects. Previous strong SW winds scoured alpine ridges and created wind slab in some alpine lee areas. Small facets are present down 70-100 cm but we are getting minimal to no results in snowpack tests and not seeing avalanche activity on these layers like we are in the Banff and Kootenay regions.

Avalanche Summary

Small loose wet sluffs were observed on steep solar aspects Saturday when the sun came out. No new slab avalanches were observed. Some natural cornice and explosive triggered avalanches up to size 3 were observed in the past four days during the big warm up.

Confidence

Timing or intensity of solar radiation is uncertain

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.