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

Avalanche Forecast

Mar 19th, 2024–Mar 20th, 2024
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: Akamina, Bull, Crowsnest North, Crowsnest South, Elkford East, Elkford West, Flathead, Lizard, Lizard-Flathead, South Rockies.

Very large persistent slab avalanches remain likely to human trigger, especially at treeline and above.

Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.

Confidence

Moderate

Avalanche Summary

Numerous naturally triggered loose wet avalanches were reported on sunny aspects at all elevations on Monday.

Additionally, one naturally triggered size 2 wet slab on an east aspect below treeline and one size 2 cornice failure were also reported.

Snowpack Summary

A weak surface crust forming overnight will break down quickly throughout the day.

Cornices have become large and looming, and are more likely to fail during periods of warming.

A widespread, hard crust down 80-200 cm with weak facets above continues to be the primary layer of concern for human triggering of very large persistent slab avalanches.

Weather Summary

Tuesday Night

Partly cloudy. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Wednesday

Mix of sun and cloud. 30 to 40 km/h southwest ridgetop wind. Treeline temperature 4 °C. Freezing level 2500 m.

Thursday

Cloudy with flurries, 10 to 20 cm of snow (above 1200m). 30 to 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1500 m.

Friday

Cloudy with isolated flurries, 0 to 3 cm of snow. 5 to 10 km/h south ridgetop wind. Treeline temperature -10 °C. Freezing level 800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep in mind that human triggering potential persists as natural avalanching tapers off.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • If triggered loose wet avalanches may step down to deeper layers resulting in larger avalanches.
  • Cornice failure may trigger large avalanches.

Avalanche Problems

Persistent Slabs

A crust with weak facets above is down 80 to 200 cm. Steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the most likely places to trigger this layer.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 2 - 4

Loose Wet

If triggered loose wet avalanches may step down to deeper layers, resulting in very large avalanches.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2.5