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Archived

Avalanche Forecast

Mar 4th, 2016–Mar 5th, 2016
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Little Yoho.

High freezing levels over the weekend will elevate the danger slightly and bring the possibility of moist surface sluffing at lower elevations. Watch the freezing levels closely and pull back into more conservative terrain as things heat up.

Weather Forecast

Increased freezing levels up to 1800m with light flurries and moderate west winds are forecast for the weekend.

Snowpack Summary

20-30 cm of recent storm snow with sun crusts forming on solar aspects to treeline. Moist surface snow below 1600m and wet snow below 1300m on Friday. Expect to find small wind slabs forming in lee areas in the alpine. Generally, the snowpack is well consolidated with few weaknesses.

Avalanche Summary

Some solar triggered sluffing in steep rocky terrain, and moist sluffing and snowballing at lower elevations.

Confidence

Freezing levels are uncertain on Saturday

Avalanche Problems

Wind Slabs

West winds have formed small wind slabs in predictable areas on the leeward sides of ridges. Pay close attention to how the snow surface feels, ski test on small rolls, and look for clues like cracking.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Persistent Slabs

The persistent weak layers from January and February are bonding well and have a low likelihood of triggering in most of the forecast area. The snowpack overall is quite strong, but check for yourself and look for surface hoar in the upper meter.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 2 - 3