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

Avalanche Forecast

Dec 27th, 2018–Dec 28th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Little Yoho.

One more day of good conditions in Little Yoho before another storm arrives on Saturday and the avalanche danger rises again.

Weather Forecast

One more day of high pressure with a light Northwest flow brings mostly sunny skies for Friday with temperatures remaining cool (-10 to -20), but this changes on Saturday as an intense 1-day system will cross the area and deposits 10-20 cm of snow with extreme winds in the forecast (>100 km/hr).

Snowpack Summary

In most of Little Yoho there is 60-80 cm of settled snow over top of the Dec10 surface hoar/facet layer. Shears on this layer are generally producing hard but sudden planar results. In shallow areas (lower elevations and Mt. Dennis) the main concern is the weak basal facets which continue to produce whumphing and easy test results.

Avalanche Summary

No new avalanches observed or reported today in Little Yoho.

Confidence

Avalanche Problems

Persistent Slabs

This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 40-80 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
Use caution on open slopes and convex rolls at treeline where buried surface hoar may be preserved.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 3