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

Avalanche Forecast

Dec 30th, 2022–Dec 31st, 2022
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
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

Heightened avalanche conditions exist on steep and wind-affected slopes.

Confidence

High

Avalanche Summary

Observations from this region are limited, but a few wind slab avalanches have been reported each day since the storm earlier this week. This includes some large natural wind slab avalanches in steep rocky terrain (size 2), and some smaller explosive and skier triggered wind slabs up to 50 cm thick (size 1-1.5).

Snowpack Summary

15 to 25 cm of snow has fallen over the past week and has been redistributed by wind from the southwest. A rain crust can be found beneath this snow up to roughly 2000 m. As usual, snow depths are highly variable in the southern Rockies. The middle of the snowpack is generally consolidated and sits above weak faceted snow near the ground. Under the current conditions, this structure is primarily a concern on steep wind-loaded slopes.

Weather Summary

Friday night

Light snowfall with trace accumulations, 40 to 50 km/h wind from the southwest, treeline temperatures around -6 °C.

Saturday

Cloudy with very light snowfall, trace accumulations, 30 to 40 km/h wind from the west, treeline temperatures around -5 °C.

Sunday

Mostly sunny, no precipitation, 20 to 30 km/h wind from the northwest, treeline temperatures around -8 °C.

Monday

Sunny, no precipitation, light wind, treeline temperatures around -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use caution when approaching steep and rocky terrian.
  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.

Avalanche Problems

Wind Slabs

Strong wind over the past few days has stripped west and south facing slopes and formed slabs on north and east facing slopes.

Aspects: North, North East, East, South East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2