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

Avalanche Forecast

Apr 4th, 2024–Apr 5th, 2024
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
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
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Dogtooth, East Purcell, Esplanade, Purcells, West Purcell.

Accumulated new snow is developing into storm slabs. Back off steep terrain if you see evidence of nearby avalanches or signs of instability like cracks in the snow surface.

Confidence

Moderate

Avalanche Summary

On Wednesday, in the region's northeast, several natural and remotely-triggered wind slab avalanches up to size 2 were reported from north and east aspects in the alpine and treeline.

As storm snow accumulates, we expect storm slabs to form and become reactive and may trigger old wind slabs at alpine and treeline elevations.

Snowpack Summary

20 to 25 cm of new snow has accumulated over old wind slabs at alpine and treeline elevations, overlying a crust on all aspects and elevations.

A widespread crust with facets above is down 60 to 110 cm. This layer is unlikely to human trigger in areas where a thick crust above the weak layer is present.

Weather Summary

Thursday Night

Cloudy with isolated flurries 2 to 4 cm. 10 to 20 km/h east ridgetop wind. Treeline temperature -7° C.

Friday

Mix of sun and cloud with isolated flurries, 2 to 4 cm. 5 to 10 km/h north ridgetop wind. Treeline temperature -3° C. Freezing level 1800 m.

Saturday

Partly cloudy with isolated flurries, 0 to 2 cm snow. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -2° C. Freezing level 2000 m.

Sunday

Partly cloudy. 10 to 15 km/h southwest ridgetop wind. Treeline temperature -1° C. Freezing level 2100 m.

Check out the Mountain Weather Forecast for additional weather information.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

Avalanche Problems

Storm Slabs

20 to 25 cm of accumulated new snow may develop into storm slabs as the new snow settles and becomes a cohesive slab.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Loose Wet

Even small windows of sun may be enough to trigger small wet loose avalanches.

Aspects: South, South West.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 1 - 1.5