Bulletin d’avalanche North Columbia — Apr 3, 2019

Points saillants

A bit of fresh snow may improve riding conditions. Isolated pockets of wind slab may be encountered on high elevation, north facing terrain.

Problèmes avalancheux

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Possible
Taille
1–1.5
Slab avalanches remain possible at alpine elevations, particularly on steep terrain close to ridges.

Confidence

Moderate -

Weather Forecast

WEDNESDAY NIGHT - Cloudy with flurries, 5-10 cm / southwest winds, 15-30 km/h / alpine low temperature near -4THURSDAY - Cloudy with sunny periods and isolated flurries / southwest winds, 15-30 km/h / alpine high temperature near -2 / freezing level 1800 mFRIDAY - Cloudy with isolated flurries / southeast winds, 10-25 km/h / alpine high temperature near -1 / freezing level 2000 mSATURDAY - Cloudy with flurries, up to 5 cm / southwest winds, 20-40 km/h / alpine high temperature near -2 / freezing level 1700 m

Avalanche Summary

On Tuesday, there were two reports of glide slab avalanches, size 1 and 2.5. These occurred on southeast aspects between 2200-2400 m. Both released on rock slabs.On Monday, a small (size 1) wind slab was triggered by a skier on a north aspect in alpine terrain. The slab was 20 cm deep and about 10 m wide.

Snowpack Summary

Around 5 cm of new snow sits on a melt-freeze crust on all aspects except for north slopes above 2000 m, where it sits on 10 to 30 cm of dry snow, surface hoar (feathery crystals) and isolated wind slabs. Below approximately 1800 m, the recent precipitation likely fell as rain.North facing slopes above 2000 m may also have a layer of sugary faceted snow buried 50 to 70 cm.Snow is disappearing rapidly at lower elevations.

North Columbia

Danger d’avalanche