Avalanche Forecast

Issued: Feb 27th, 2019 4:00PM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Loose Dry and Deep Persistent Slabs.

Parks Canada timothy johnson, Parks Canada

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Enjoy the warm daytime temperatures while they last. On Friday the arctic air will bring the pain with temperatures around -30C

Summary

Weather Forecast

Cold, clear and dry conditions as the arctic air rules supreme over our region.Thursday will be sunny with cloudy periods, alpine high -9 C, with an overnight low of -30 C, and light NE ridge winds.Mountain weather forecast available at Avalanche Canada.

Snowpack Summary

The upper snowpack on solar aspects could be stiffening up, otherwise remains faceted. Wind effect is visible in open terrain from previous SW switching to N winds. The Jan 18 layer (down 40cm) has faceted away in most places, but shows isolated sensitivity at treeline and below. The midpack is mainly supportive, over depth hoar in shallow areas.

Avalanche Summary

No avalanches were observed today. Some isolated whumpfs around treeline in the Whistler Creek area. No activity has been reported around the Icefields for several days.

Confidence

The weather pattern is stable

Problems

Loose Dry

An icon showing Loose Dry
Isolated to steep terrain where surface snow doesn't show signs of previous wind affect.
Minimize exposure to terrain traps where the consequences of an avalanche could be serious.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 1.5

Deep Persistent Slabs

An icon showing Deep Persistent Slabs
Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places.
Be cautious in shallow snowpack areas where triggering is more likely.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Unlikely

Expected Size

1.5 - 2.5

Valid until: Feb 28th, 2019 4:00PM

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