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

Jan 12th, 2025–Jan 13th, 2025

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

Glacier.

A weak layer down 30-50cm is prime for human triggering, especially where the snow above has been stiffened by the wind.

Carefully evaluate your line from a safe location!

Confidence

Moderate

Avalanche Summary

No new natural avalanches have been observed in the last 2 days. Although the natural cycle has slowed, human triggering remain possible to likely where the new snow overlays surface hoar. There have been several reports of rider triggered avalanches up to size 1 in neighbouring terrain.

Numerous natural avalanches were observed on Friday into early Saturday morning, caused by new snow and southerly wind. These averaged size 2-3 and were running far into the runouts.

Snowpack Summary

We've received ~50cm of new snow since Jan 7th. This new snow buries a weak interface, which consists of widespread surface hoar on all aspects into the high alpine, and a thin suncrust on steep S to W aspects. Moderate southerly winds have redistributed this new snow in wind exposed terrain.

Overall the mid and lower snowpack is strong and well settled.

Weather Summary

High pressure stabilizes, deflecting storms north.

Tonight Mainly cloudy. Alpine low -12°C. Wind W-15km/hr. Freezing level (FZL) at valley bottom.

Mon Mix of sun & cloud. Alpine high -5 °C. Wind W-20km/hr. FZL 900m. Alpine temperature inversion.

Tues Mainly cloudy. Alpine high -3 °C. Wind W-25km/hr. FZL 1500m.

Wed Mainly cloudy. Alpine high -2°C. Wind SW-25km/hr. FZL 1400m.

Terrain and Travel Advice

  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Avoid areas where the snow feels stiff and/or slabby.
  • Be especially cautious as you transition into wind-affected terrain.

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.

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.