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

Apr 8th, 2018–Apr 9th, 2018

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

Jasper.

Good skiing is found in the region with winter like conditions.

Weather Forecast

Monday will be Cloudy with sun and flurries, trace snow, high's of -3, light West winds, and 2000m freezing level. Tuesday will be flurries, possibly 10cm Tuesday into Wednesday, -7 to -1, Light SW winds gusting strong with 2100m freezing level. Wednesday will be sun and cloud, flurries, High -4 C, and light SW winds.

Snowpack Summary

Wind slabs are in open high alpine areas with localized winds. The upper snowpack is a 50 to 80 cm thick slab that bridges three weak layers in the mid-pack. Whumpfing and collapses were noted on the Mt. Kitchener slopes facing the highway last week yet natural activity has tapered off.

Avalanche Summary

Sunday patrol noted very little in fresh natural activity as the sun was kept at bay by cloud cover. Some size 1 moist surface sluffing was noted on steep sun facing gullies when the sun did make a brief appearance.

Confidence

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

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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.