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Archived

Avalanche Forecast

Nov 25th, 2018–Nov 26th, 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
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Lizard-Flathead.

This time of year observations are limited, so make sure to supplement this forecast with your own observations. If you've been out please post your observations to the Mountain Information Network MIN.

Confidence

Low - Due to the number of field observations

Weather Forecast

MONDAY: Mainly cloudy / Alpine temperature 2  / Light to moderate southwest wind / Freezing level 2000 mTUESDAY: Mainly cloudy with scattered flurries or showers / Alpine temperature 1 / Light to moderate southwest wind / Freezing level 1800-2000 mWEDNESDAY: Cloudy with isolated flurries / Alpine temperature -2 / Light to moderate west wind / freezing level 1500 m

Avalanche Summary

Reports from Friday show a natural avalanche cycle during the Friday overnight period as well as explosives control in the Fernie area producing numerous storm slab releases reaching up to size 2. This avalanche activity was limited to the depth of our new snow, about 25 cm deep.

Snowpack Summary

Up to 30 cm of new snow fell in the region Thursday and Friday. The new snow buried a recently formed layer of weak, feathery surface hoar. Recent winds have since redistributed the new snow. A mixed layer of melt-freeze crusts and sugary facets sits near the base of the snowpack. The snowpack is deepest in the alpine and at tree line, where you might now expect to find total depths of around 70 cm. These depths taper rapidly at lower elevations.

Avalanche Problems

Wind Slabs

New snow combined with wind leading into the weekend has produced wind slabs in the lee of terrain features.
Watch for signs of instability, such as whumphing, shooting cracks, and recent avalanches.Be cautious as you transition into wind affected terrain.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5