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Archived

Avalanche Forecast

Apr 14th, 2019–Apr 15th, 2019
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Glacier.

Storm snow should soften skiing old frozen snow surfaces. Watch for storm slabs on the immediate lee of alpine ridges and exposed treeline locations.

Weather Forecast

Periods of snow ending late this morning with overcast skies and flurries this afternoon. Freezing level should rise to 1400m this afternoon with an alpine high of -6C along with moderate westerly winds. A mix of sun and cloud for Monday and Tuesday with freezing levels rising to 2000m by Tuesday afternoon.

Snowpack Summary

10cm+ of storm snow overnight with mod to strong SW-S winds will be forming soft storm slabs on alpine and treeline lee slopes. Melt freeze crusts on steeper solar aspects and all aspects below treeline. The BTL crust may be weakened from being insulated by storm snow. Below treeline a melt freeze crust covers isothermal snow on all aspects.

Avalanche Summary

No new avalanche activity observed or reported in the last 24hrs.

Confidence

Avalanche Problems

Storm Slabs

10cm + of storm snow along with moderate to strong S-SW winds are forming thin storm slabs on alpine and exposed treeline lee slopes. These slabs may be sensitive to human triggering.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Watch for fresh storm slabs on exposed lee slopes at and above treeline.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

Pockets of lingering persistent slab may be found under today's storm snow. These slabs overlie crusts on solar aspects and given the right location, surface hoar on alpine north aspects.
Pockets of persistent slabs linger on alpine lee features.

Aspects: North, North East, East, North West.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2