Avalanche forecast

Jasper

Nov 28 – 29, 2018Parks Canada
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Archived · expired 8 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
No rating
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Highlights

The forecast new snow has not arrived, but ongoing strong winds have likely loaded lee terrain enough to increase the avalanche danger.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    Ongoing strong winds continue to build windslabs.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1.5–2.5
    Most skiable slopes have this crust, assess the strength of this interface before jumping into any committing lines. See forecast details for more info on this layer.

Weather Forecast

The upper level flow switches from SW to Westerly through out the day Wednesday. SW winds persist, but only in the light-moderate range.  Alpine temperatures will drop from a daytime high of -4C to -12C as the skies clear into the evening.Click here for the Avalanche Canada mountain weather forecast.

Snowpack Summary

Strong SW wind and warm temps promoting fresh windslab development. The October 25 crust, sitting 0-40cm off the ground, remains a concern. This crust is most prevalent in deeper snowpack areas - found predominately on N-NE lee features. Faceting above and below this layer continues to weaken the lower snowpack.

Avalanche Summary

No recent activity has been reported, no field teams have been out since the weekend.  The local ski hill triggered two windslabs (one large/size 2) during explosive control work on Sunday.

Confidence

Due to the number of field observations

Regions covered