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Archived

Avalanche Forecast

Mar 26th, 2018–Mar 27th, 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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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

Regions: Glacier.

With the incoming storm expect avalanche danger to rise throughout the day and into tomorrow.

Weather Forecast

Today will be the start of a significant storm as a weather system from the Pacific approaches. We can expect 5cm of snow today with 25-45 km/h winds from the SW and freezing level to 1400m. Overnight and into Tuesday we will see an additional 25-30cm of new snow, sustained winds into the moderate range(gusting to 70 km/h) & freezing level to 1600m

Snowpack Summary

Strong alpine winds have redistributed the 5 cm of new snow that fell overnight and the previous 10-20cm of storm snow that we have received in the last week. Cool temps have kept the near surface crust below treeline intact. Watch for a buried crust on steep solar aspects and isolated patches of surface hoar, both down 20-40cm.

Avalanche Summary

Cool temps have limited the natural activity however, a sz 3 cornice release was observed on the weekend which put debris all over the fan. Saturday there was an accidently triggered avalanche in the Ravens area of the Asulkan Valley. This was a fresh windslab over suncrust in a mid slope cross loaded feature. It ran for 350m & injured the skier.

Confidence

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

Avalanche Problems

Storm Slabs

Five cm of new snow fell overnight with Southerly winds gusting to 81 km/hr. Another 5cm is forecast today with sustained winds building windslab in lee features.  Pay close attention solar aspects where near surface crusts act as a good bed surface
Use caution in lee areas. Recent wind loading have created wind slabs.Minimize overhead exposure during periods of heavy loading from new snow, wind.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5