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 18th, 2013–Dec 19th, 2013

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

Regions

Northwest Inland.

Forecasters are working with limited amounts of field data at this early part of the season. If you are traveling in the backcountry and have information, we'd love to hear about [email protected]

Confidence

Poor - Due to the number of field observations

Weather Forecast

Synopsis: The pattern switches to a NW flow for the forecast period. Lots of wind and a trace of snow for the next few days.Thursday: Freezing Level: Valley Bottom Precip: Trace Wind: Mod gusting Extreme, W/NWFriday: Freezing Level: 900m Precip: Nil Wind: Mod gusting Extreme, NW Saturday: Freezing Level: 600m Precip: Trace Wind: Light, NW.

Avalanche Summary

No avalanches have been reported. This likely speaks more to the lack of observations than actual conditions.

Snowpack Summary

Reports from the area are quite sparse. There is significant variation in snow depths across the region. In the Smithers area, reports suggest snow depths of 70-90cm at treeline.The northern portion of the region received more snow (upwards of 20cm) than the south (Smithers area) which received 10 to 20 cm overnight. In areas that received significant new snow amounts, the snow is settling into a storm slab, accelerated by the recent warm temperatures. Very strong winds are transporting snow into deep pockets of cohesive, wind pressed snow. Cold temperatures at the beginning of December created near surface facetted snow and surface hoar above old wind and melt-freeze crusts. The new warmer storm snow is not expected to bond well to these old buried layers which range from 20-40cm below the surface. The mid and lower snowpack is weak, composed of facets, depth hoar and an early season crust near the base of the snowpack.If you have been out, we would love to hear about it. Please send your observations to [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.