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

Dec 10th, 2011–Dec 11th, 2011

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Kootenay Boundary.

Confidence

Good - -1

Weather Forecast

Sunday looks to be a pretty mild weather day. Winds will be light out of the E-NE, freezing levels remain at valley bottom and temperatures stay steady at -7. A weak ridge builds back into the area Monday before breaking down Tuesday allowing another mild system to approach the region. Light precipitation is expected Tuesday night into Wednesday morning. Totals are pretty shaky at this point but I'm not expecting anything significant.

Avalanche Summary

No significant recent avalanche activity has been reported. If you have any avalanche observations to report, please email us at: [email protected].

Snowpack Summary

Great observations continue to come into the office.On the surface, cold clear nights are generating some very significant surface hoar development. I'm hearing reports of SH varying in size from 3mm to as much as 40mm with an average around 12mm. Wow! It looks like we get a few dribs and drabs of snow next week which will likely preserve at least some of this surface hoar. It's too early to say where it will be a factor, but the writing is on the wall.Generally speaking, we're looking at a pretty bomber snowpack. Yes, there are some basal weaknesses on the ground but these are being well bridged by the strong mid-pack. Sure, there's a chance that you could activate these weaknesses in an area where the pack is going from thick to thin. (Steep terrain, especially near rock outcroppings.) But, the overall avalanche danger for the area is low. See the forecasters' blog for a heads up discussion on low danger.The alpine snowpack is 150-200 cm, dropping to treeline you'll find depths of 50-150cm.If you're out & about please drop me a line & let me know what you're seeing:[email protected]

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.