Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Apr 4th, 2018–Apr 5th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Kootenay Boundary.

Winter continues. Snow forecast for Thursday is expected to add to existing storm slabs.

Confidence

Moderate - Intensity of incoming weather systems is uncertain

Weather Forecast

THURSDAY: 5-10 cm snow. Light to moderate south-easterly winds. Freezing level near 1500 m.FRIDAY: Light snow. Light winds. Freezing level near 1600 m.SATURDAY: Moderate snow. Light winds. Freezing level near 1600 m.Weather models disagree on the amount of snow expected this week.

Avalanche Summary

A skier-triggered size 2 storm slab was reported on a south-west aspect at treeline on Tuesday. A few loose moist size 1 avalanches were observed in steep sunny terrain on Wednesday.

Snowpack Summary

Up to 50 cm recent snow is slowly settling. Storm snow overlies variable surfaces including hard crusts on all aspects below 1900 m, and sunny aspects higher up. On high, shady aspects, the new snow may sit on some old wind slabs from last week, or a mix of large surface hoar and surface facets. Another weak layer buried in mid-March is down 50 to 120 cm and is a crust on solar aspects and surface hoar (to 6mm) on high elevation north aspects. Deeper weak layers are generally considered dormant.

Avalanche Problems

Storm Slabs

Snow and wind are expected to build slabs which could be triggered with the weight of a person.
Use conservative route selection: choose moderate angled and supported terrain with low consequence.Travel on ridgetops to avoid wind slabs on slopes below.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2.5