Bulletin d’avalanche North Columbia — Nov 28, 2021

Points saillants

The incoming storm will result in large avalanches on all aspects. many of which will run full path. If you are heading into the mountains on Sunday you should be very aware of overhead hazard.

Problèmes avalancheux

Storm Slabs
N
NE
E
SE
S
SW
W
NW
Alpin
Limite forestière
Sous la limite forestière
Probabilité
Very Likely
Taille
2–4.5
Large storm slabs will form on all aspects. Some avalanches will run full path, Keep your head up and be aware of overhead hazard.

Confidence

High - We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.

Weather Forecast

Saturday night: another storm arriving in the North Columbia region tonight. Freezing levels will rise to 1400m with moderate Southwest winds. Up to 35mm of precipitation is expected.

Sunday: The storm will reach its peak early in the morning. freezing levels will rise to 2000m with strong Southwest winds. An additional 15 to 30mm of precipitation will fall. Flurries for the afternoon.

Monday: Freezing levels will fall slightly to 1600m. light precipitation throughout the day will bring up too 10mm with light to moderate Southwest winds.

Tuesday: Freezing level 1500m and up to 25mm of precipitation. Winds will be moderate to strong from the Southwest.

Avalanche Summary

On Friday the Northern Selkirks experienced a widespread natural avalanche cycle to size 3. Large storm slabs were observed running from steep alpine start zones. Less observations in Monashees but suspect similar avalanche activity.

Snowpack Summary

The storm hitting the region on Saturday night and Sunday morning will create new storm slabs on all aspects.

A mid November rain crust is down 30 to 70cm and exists below 1900m.

Terrain and Travel

Be careful to keep storm day fever from luring you out into bigger terrain features.
Use increased caution at all elevations. Storm snow is forming touchy slabs.

North Columbia

Danger d’avalanche