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Avalanche Forecast

Archived

Feb 2nd, 2025–Feb 3rd, 2025

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

Regions

Little Yoho.

The cold temperatures are expected to help, but there is still some uncertainty on how the storm snow is bonding to the old surface.

Confidence

Moderate

Avalanche Summary

The Parks Canada field team observed an ongoing loose dry avalanche cycle today on Mt. Field and Wapta Peak, with slides up to size 1.5. Evidence of a smaller storm slab cycle from yesterday was also noted at treeline, with avalanches up to size 1.

Snowpack Summary

Up to 40cm of storm snow has fallen in the area at treeline. This sits on a weaker layer (Jan. 30) of crust, surface hoar, and facets. The mid and lower snowpack is well settled, with snowpack depths at the treeline ranging from 120cm to 180cm.

Weather Summary

Tomorrow will be chilly, with temperatures dropping into the minus 20s at the ridge and -16 in the valley. There will be clearing over the course of the day, and light to moderate winds are expected.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the old surface.

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

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.