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

Feb 15th, 2014–Feb 16th, 2014

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

Regions

Northwest Inland.

Confidence

Fair - Due to the number of field observations

Weather Forecast

A series of frontal systems will be sending waves of light precipitation amounts accompanied by strong to extreme winds through the forecast period. Saturday night: Snow amounts 5-10 cm. Ridgetop winds blowing strong from the SE. Alpine temperatures near -4.0. Sunday: Mainly cloudy with some sunny periods and isolated flurries. Alpine temperatures near -7.0. Strong westerly ridgetop winds.Monday: Cloudy with some flurries. Alpine temperatures near -7.0. Ridgetop winds light from the SW.Tuesday: Snow amounts near 5 cm. Alpine temperatures near -10.0. Ridgetop winds blowing light from the SW.

Avalanche Summary

No new avalanche activity has been reported.

Snowpack Summary

The region has received between 20-45 cm of new snow which overlies a variety of old surfaces. These buried surfaces consist of facets, surface hoar (more predominant at treeline and below treeline elevations), a scoured crust, wind press, or any combination of these. Reports from the field indicate a very poor bond between the new snow and these old surfaces.Strong winds have likely added cohesion to the new storm slab, and have shifted the new snow into deeper wind slabs on lee slopes.The mid and lower snowpack are generally strong and well-settled. Basal facets and depth hoar are likely to exist in some parts of the region, but triggering has become unlikely.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.