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Avalanche Forecast

Mar 13th, 2016–Mar 14th, 2016
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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: Sea To Sky.

Ongoing snowfall and southerly winds will continue to load to already thick storm slabs and large cornices. Conservative terrain selection is recommended.

Confidence

Moderate - Wind speed and direction is uncertain on Tuesday

Weather Forecast

MONDAY: moderate to light snow starting overnight with 5-20cm expected by the end of the day,  mainly light westerly winds, 1200m freezing level. TUESDAY: light snowfall continues, light westerly winds, 1200m freezing level. WEDNESDAY: clearing, light and variable winds, 1200m freezing level.

Avalanche Summary

Natural and artificially triggered avalanche activity up to size 2.5 was reported from across the region on Saturday. Cornices remain large and fragile. They have been failing naturally and would likely collapse under the weight of a person.

Snowpack Summary

Up to 75cm of recent storm snow is being reported in sheltered areas with up to 150cm in wind loaded areas. Weaknesses within or at the base of the new storm snow may need a couple days to settle and strengthen. Southerly winds have created very deep and dense slabs in lee terrain, probably well below ridge crests, while scouring windward slopes. Cornices are large and fragile. The mid and lower snowpack are strong and well-settled.

Avalanche Problems

Storm Slabs

More snow and wind means that widespread storm slabs are expected to remain reactive to human-triggering, especially in wind loaded terrain.
Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain. >The new snow will requires several days to settle and stabilize. >Avoid freshly wind loaded features. >

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 5

Cornices

Cornices are large and fragile, avoid lingering under overhead hazard or venturing close to ridge edges.
Give cornices a wide berth when travelling on or below ridges.>Extra caution needed around cornices with current conditions.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 5