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

Avalanche Forecast

Feb 3rd, 2021–Feb 4th, 2021
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
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

Regions: Glacier.

Conservative terrain choices is required today. Be wary of steep, unsupported terrain features, and large overhead hazards.

Weather Forecast

A mixed bag of weather can be expected today as a Ridge of High Pressure is trying to move over Rogers Pass, while a Low-Pressure system retreats south of the border. It's currently snowing, but the sun is forecasted to come out today, freezing levels will reach 900m, and winds could reach mod values from the SW. More flurries tonight and tomorrow.

Snowpack Summary

Another 15cm last night, brings our storm total to ~80cm at TL, with the bulk of the precip falling on Monday and Tuesday. The brunt of the storm brought warm temperatures, and strong winds creating touchy storm slabs. The new snow buries a previous drought layer (surface facets, surface hoar, wind affect, and sun crust).

Avalanche Summary

Avalanche Control on Tuesday morning produced numerous avalanches; averaging size 3, several size 3.5s, and a few size 4s! Large natural avalanches were also observed in the HWY corridor to size 3.5. Limited obs from the backcountry; however, its likely there were numerous natural avalanches, Monday evening and Tuesday morning.

Confidence

Due to the number of field observations

Avalanche Problems

Storm Slabs

Approximately 60cm of recent storm snow, accompanied by warm temps, and strong winds built fresh storm slabs. The recent snow buries a previous drought layer(surface hoar, sun crust, and surface facets), which varies on elevation and aspect.

  • Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 3

Loose Dry

Expect loose dry avalanches in steep terrain. The underlying facets will allow for a greater snow mass to accumulate and flow fast and far.

  • If triggered dry loose point releases can form deeper deposits in terrain traps.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2