Archived

Avalanche Forecast

Mar 30th, 2018–Mar 31st, 2018

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

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

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

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

1: Low

The avalanche danger rating below treeline will be low

Regions: Kananaskis.

High winds and new snow are keeping the hazard consistent. In addition to our 3 main problems, there may be a loose dry issue tomorrow as the cold new snow sluffs off the harder layers beneath.

Confidence

High -

Weather Forecast

This upslope storm will taper, but flurries will continue overnight giving 7cm. Winds will gust to 45 km/hr from the northeast. -20C is the forecasted low for tonight!! Tomorrow will be a sun/cloud mix with a high of 012.

Avalanche Summary

A 2.5 loose dry out of steep alpine terrain mid afternoon.

Snowpack Summary

10cm new snow in the last 24 hours with moderate to strong variable winds. Fresh wind slabs on all aspects in alpine terrain, but only east aspects at treeline. Valley bottom has a new widespread crust from yesterday, which will likely be buried by tomorrow. This new crust is also present on solar aspects up to 2300m. Expect new snow to not stick very well at first.

Avalanche Problems

Wind Slabs

These are widespread, but of particular concern in crossloaded features.

Evaluate unsupported slopes critically.Avoid steep lee and cross-loaded slopes

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1.5 - 2.5

Persistent Slabs

This layer's depth varies based on aspect. In lee areas, it could be 40-60 deep.

Avoid steep Southerly aspects.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1.5 - 2.5

Cornices

Expect these to grow with the new snow and wind. Minimize exposure as you travel beneath, or above them.

Avoid steep slopes below cornices.

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

Elevations: Alpine.

Likelihood: Likely

Expected Size: 1 - 2