Avalanche Forecast
Regions: Jasper.
Weather Forecast
Wednesday will be cloudy, seasonal temperatures, and 1500m freezing level . A storm may bring 30mm of precipitation, strong winds, and rising freezing levels Wednesday evening into Friday morning. Likely rain lower elevations. Models are not agreeing but if this transpires, this will be a significant change.Â
Snowpack Summary
Variable snow depth above treeline. Expect wind slabs in lee and cross-loaded terrain above 2000m. The persistent slab is down 40-90cm. It is touchy in the Whistler/Portal areas even on low angle slopes but is stubborn in the Icefields with inconsistent stability test results. Lower elevation snowpack is facetted and weak.
Avalanche Summary
Tuesday's field patrol in the Icefields observed no new avalanches with good visibility. Previous reports of remotely triggered avalanches to size 2 on slope angles as little as 15 deg around Marmot Pass with whumphing and cracking. Whumphing also noted in the Maligne area. In contrast, no reports of any propagations in the Icefields area.
Confidence
Timing, track, or intensity of incoming weather system is uncertain on Thursday
Avalanche Problems
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Possible - Likely
Expected Size: 1 - 3
Wind Slabs
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood: Unlikely - Possible
Expected Size: 1 - 2