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

Avalanche Forecast

Feb 10th, 2022–Feb 11th, 2022
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
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: Banff Yoho Kootenay.

Cooler temperatures should lower the hazard on Friday. Look for sheltered North facing terrain to avoid the surface crusts at lower elevations and the widespread wind effect up high.

Weather Forecast

Cooling temperatures overnight and Friday with treeline temperatures in the -8 to -12 C range. A trace of new snow overnight with a clearing trend on Friday and some solar heating as a result. Winds remain in the moderate to strong range out of the NW-N through Friday.

Snowpack Summary

Extensive wind effect in exposed areas above treeline, with wind slabs in lee areas at treeline and in the alpine. Jan 30 surface hoar and sun crust is down 20-30 cm and is becoming less reactive in tests. Temperature/sun crusts are present at lower elevations and up to 2200 m on solar aspects. Shallow snowpack areas remain weak and faceted.

Avalanche Summary

Only one stubborn small cornice failure and some small wind slabs with ski cutting were reported by the local ski hills on Thursday. Some natural solar triggered slides up to size 2 in the warmer Eastern parts of the region were also observed. No other natural avalanches observed or reported.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

Continued strong winds from the W-NW will keep developing new wind slabs in lee areas at treeline and above. These have been relatively stubborn but keep them in mind in steep terrain. New cornice development has also been observed.

  • Use caution in lee areas. Recent wind loading has created wind slabs.
  • Watch for surface cracking and stiffer surface layers of snow.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Persistent Slabs

The Jan 30 layer exists as surface hoar in sheltered areas and sun crust on steep southerly aspects 20 to 30cm down. We have observed few avalanches on this interface so far. Cooler temps following the warm up on Thursday should help this bond. 

  • Dig down to find and test weak layers before committing to a line.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2