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Archived

Avalanche Forecast

Mar 7th, 2018–Mar 8th, 2018
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Always exercise safe backcountry travel techniques. Cornices and big south faces should be given a wide berth!

Weather Forecast

Today we'll start the day off with sunny skies and patchy clouds, no precipitation and light winds. The Alpine will reach -8 and the freezing level should rise to 1100m. The sun could pack some punch today, this will be the main weather factor influencing the avalanche hazard. Snow starting tomorrow and we could see up to 20cm by Friday.

Snowpack Summary

In sheltered locations there is 20-30cm of settling storm snow, sitting on a right side up snowpack. Isolated crusts on steep solar aspects can also be found under the new snow or buried/unreactive windslabs. Our persistent weak layers(dec 15th and Feb 13th), are buried over 1.5m and currently dormant.

Avalanche Summary

One small size one avalanche was reported yesterday beneath the Asulkan hut. In the HWY corridor, we observed one relatively small size 2 avalanche out of steep south facing alpine terrain. Two days ago Crossover avalanche path ran to size 3.5. This cornice triggered slide was an anomaly, but a great reminder to stay vigilant in big terrain.

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

Isolated storm slabs could be found at ridgetop or features exposed to the wind. Solar radiation will trigger loose dry avalanches on steep sunny slopes and cliffs. These "sluffs" could trigger a soft slab or step down to a persistent weak layer.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Use caution in steeper terrain. Avoid unsupported features on the landscape.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Persistent Slabs

Suncrusts are buried 20-50 cms on steep solar aspects. This layer has the potential for human triggering, dig down and assess the snowpack before committing to your line.
Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1.5 - 2.5