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

Avalanche Forecast

Dec 27th, 2024–Dec 28th, 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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold
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
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Tutshi, Wheaton, White Pass East, White Pass West, Yukon.

Investigate the depth and reactivity of new snow as you travel and back off where you find signs of instability like shooting cracks. Treeline is likely where you'll find the greatest hazard.

Confidence

High

Avalanche Summary

No new avalanches have been reported in the region. Observations have been limited, but the Yukon field team got a glimpse into treeline terrain Thursday and Friday with no avalanche activity to report.

Please share your own observations through the Mountain Information Network.

Snowpack Summary

Steady light snowfall and southerly wind has formed deeper deposits on north aspects and scoured or pressed south-facing slopes. Exposed alpine has been heavily wind-affected.

By end of day Saturday, roughly 25 to 40 cm of accumulated snow should overlie the supportive early-December crust complex, which extends up to 1500 m.

A recent MIN report describes preserved surface hoar sitting on this crust in the Powder Valley. This setup is worth investigating throughout the region as slabs formed over this grain could be surprisingly touchy.

Despite the presence of faceted grains in the lower snowpack, there are no layers of concern below the crust. Snowpack depths range from about 70 to 180 cm.

Weather Summary

Friday Night

Cloudy with continuing scattered flurries and up to 5 cm of new snow. 15 to 25 km/h south ridgetop wind. Treeline temperature -6 °C.

Saturday

Mainly cloudy with continuing scattered flurries bringing less than 5 cm of new snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -7 °C.

Sunday

A mix of sun and cloud. 20 to 40 km/h northeast outflow winds. Treeline temperature -13 °C.

Monday

A mix of sun and cloud. 10 to 15 km/h northeast or southeast ridgetop winds. Treeline temperature -16°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Avoid freshly wind-loaded terrain features.
  • Make observations and continually assess conditions as you travel.

Avalanche Problems

Wind Slabs

Recent flurries and elevated winds mean reactive wind slabs should be expected around leeward features, particularly at treeline. Recent strong winds may have formed slabs farther downslope than usual.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2