Avalanche Forecast

Archived

Mar 10th, 2013–Mar 11th, 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 and human triggered avalanches likely.

Treeline

Natural and human triggered avalanches likely.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Regions

Little Yoho.

Rider/climber triggered avalanches are still a possibility. Also, another storm is on its way with up to 50cm by Fri/Sat. Expect a sudden rise in the danger rating as this starts to occur.

Weather Forecast

Light wind and clear skies are expected for Monday. On Tuesday, the start of another major storm system is expected. Upwards of 40cm of snow and strong wind is expected between Tuesday and next Friday. As such, the danger rating will likely climb to HIGH by Wednesday.

Snowpack Summary

Approximately 30cm of settled storm from last week is bonding to the old surface. This storm snow bond will be weakest on South aspects. Yesterday a skier triggered a size 1.5 avalanche on this storm interface on a South aspect. Additionally, a 2cm sun crust has formed on solar aspects, making the skiing challenging.

Avalanche Summary

No avalanches observed or reported today.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

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.