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 10th, 2020–Mar 11th, 2020

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

Regions

Little Yoho.

Another storm overnight on Tues will bring another 15 cm to the snowpack along with strong winds. The danger will rise accordingly on Wed but should improve slightly through the week as the storm passes and the temperatures drop late in the week.

Weather Forecast

A system moves through the area starting end of the day on Tuesday that will deposit 10-15 cm of new snow across the park, accompanied by strong westerly winds. Temperatures on Wed will continue in the -5 to -15 range. The snow will continue through until Friday when the temperature drops for a short blast of -25 on the weekend.

Snowpack Summary

Moderate to strong winds on Tues and overnight Wed will have blown snow and created small windslabs directly beside ridge crests that are prone to human triggers. In some areas, this snow overlies buried sun crusts formed in late February. The deep snowpack of Little Yoho is generally quite strong with few weaknesses.

Avalanche Summary

The ski resorts reported easy ski cutting of 10-15 cm windslabs (size 1) formed through the day on Tuesday and observed a cornice fall in very steep terrain that triggered a size 2 windslab on the slope below.

Confidence

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.