Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Jan 17th, 2021–Jan 18th, 2021
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

The park is busy! Be cognizant of groups around you.

The recent storm snow has gained strength, however uncertainty remains with the Jan 10 SH interface.

Weather Forecast

A cold front from the North Rockies to the South Coast will weaken and move across southeast BC today.

Today: Isolated flurries, 5cm. Freezing level 1200m. Winds W- 20 km/h gusting to 45

Tonight: Mainly cloudy with trace of snow. Freezing level 800m. Winds W- 20 to 40 km/h

Monday: Cloudy with sunny periods. Freezing level 800m. Winds NW- 10 to 20 km/h

Snowpack Summary

Up to 10cm overnight covers a thin surface crust on steep solar aspects. The Jan 10 surface hoar is down 35-65cm in sheltered terrain at treeline and below and is capped by a thin freezing rain crust in some locations. The Dec 7th surface hoar/crust/facet layer is down 1.5m. Crusts with facets persist at the base of the snowpack.

Avalanche Summary

No new avalanches observed in the past 2 days. On Thursday, field team members remotely triggered a size 1 slab on Jan 10 surface hoar at 1900m in the west end of the park, and the Lone Pine path glide crack on Mt Tupper released to ground size 3.

Confidence

Due to the quality of field observations

Avalanche Problems

Persistent Slabs

This layer is capped by a thin crust in many locations making it stubborn to initiate, however it has proven that it can still be triggered in sheltered locations. Avalanches caused by this layer may fracture above you!

  • Dig down to find and test weak layers before committing to a line.
  • Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 2.5

Loose Dry

10-15cm of new snow overlays a sun crust on steep solar aspects, and surface facets on northerly aspects. If triggered, these avalanches may run quickly and gather enough mass to push around a skier or rider.

  • Avoid terrain traps, such as gullies, where the consequences of a small avalanche could be serious.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2