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

Nov 20th, 2015–Nov 21st, 2015

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Northwest Inland.

AVCAN forecasters have very little information at this time. If you are touring or riding in the back country, share you observations through the MIN. We'd love to hear from you

Confidence

Fair - Due to the number and quality of field observations

Weather Forecast

Friday:  A Pacific frontal system will begin to move into the area from the coast bringing  snow to higher elevations.  Freezing level around 500m, winds from the west to 30 km/hr at ridge tops.Sat:      Rain below 500m early in the morning with the freezing level forecast to rise above 1500m by 1300hrs. Possible 10+ cm of snow above 1500m with Mod to strong westerly winds.Sun:    Precipitation tapers off early Sunday morning as the Pacific system moves farther into the interior.  Temperatures begin to drop in advance of an arctic front arriving Monday.Mon:  No precipitation in the forecast.  Freezing level at valley bottom.  Sunny skies and cold weather for a few days.

Avalanche Summary

No reports of avalanche activity in the Northwest Inland

Snowpack Summary

Not much information available, although some areas received a considerable amount of snow from the last Pacific system. For the most part the Northwest Inland is below threshold for avalanche activity with the exception of tree-line and alpine locations. Wind slab formation as well as surface hoar and surface facetting has been reported to the west in the alpine.

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.