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 18th, 2023–Apr 21st, 2023

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

Regions

Waterton Lakes, Waterton.

Another blast of winter weather!! Lots of uncertainty surrounding snowfall amounts for the next few days.

Pay attention to how the new snow bonds to old crusts.

Confidence

Low

Avalanche Summary

Small wet loose observed in the last couple of days on steep solars.

Last week numerous wet loose avalanches up to size 2.5 were observed from steep terrain and on all aspects.

Snowpack Summary

In the alpine and high treeline, 5-10 cm of snow sits over a melt freeze crust complex from last weeks warming events. The January melt freeze crust is buried up to 100cm. Alpine and Treeline midpack is well settled and overlies basal facets and depth hoar.

Weather Summary

Wed-Friday

The next three days will bring convective snow, heavy at times, with up to 40cm possible. Temps will generally be cool with daytime highs of -5 and lows of -7 in the alpine. Winds will be light to moderate from the NW. The skies will be mostly overcast.

Terrain and Travel Advice

  • Wind slabs may be poorly bonded to the underlying crust.

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.