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Archived

Avalanche Forecast

Mar 10th, 2013–Mar 11th, 2013
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
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Banff Yoho Kootenay.

Rider/climber triggered avalanches are still a possibility. Also, another storm is on its way with up to 50cm by Fri/Sat. Expect a sudden rise in the danger rating as this starts to occur.

Weather Forecast

Light wind and clear skies are expected for Monday. On Tuesday, the start of another major storm system is expected. Upwards of 40cm of snow and strong wind is expected between Tuesday and next Friday. As such, the danger rating will likely climb to HIGH by Wednesday.

Snowpack Summary

Approximately 30cm of settled storm from last week is bonding to the old surface. This storm snow bond will be weakest on South aspects. Yesterday a skier triggered a size 1.5 avalanche on this storm interface on a South aspect. Additionally, a 2cm sun crust has formed on solar aspects, making the skiing challenging.

Avalanche Summary

No avalanches observed or reported today.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

Avalanche Problems

Storm Slabs

Storms slabs vary between 30 and 40cm thick. In areas East of the divide the bond at the storm snow interface is weaker than areas farther West.
Breakable crust makes for tough ski conditions.Use safe ski cutting techniques before entering ski run.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3