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Archived

Avalanche Forecast

Apr 24th, 2024–Apr 25th, 2024
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
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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

Watch for pockets of wind slab in alpine lees and loose avalanches out of steep sunny slopes.

Confidence

Moderate

Avalanche Summary

A handful of skier-triggered wind slab avalanches up to 30 cm deep were reported in the alpine over the last few days. Most were small (size 1), with one solar-triggered size 2 observed in the central Selkirks.

Last week, cornice failures were notably not propagating any weak layers on slopes below but there was one report of an anomalous remotely skier-triggered size 2 failing on moist snow below a recently buried crust.

Snowpack Summary

A dusting of new snow falls over widespread crusty surfaces on all but high north-facing alpine terrain, where snow is dry and likely wind affected. There are no deeper concerns at this time.

Weather Summary

Wednesday night

Mostly cloudy with flurries bringing up to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1600m.

Thursday

Mostly cloudy with sunny periods and isolated flurries bringing a trace. <20 km/h west ridgetop wind. Treeline temperature -1 °C. Freezing level 2000m.

Friday

Mostly cloudy with 5 to 10 cm of new snow. 10 to 30 km/h east ridgetop wind. Treeline temperature -1 °C. Freezing level 2000m.

Saturday

Mostly cloudy with around 5 cm of new snow. 10 to 30 km/h southwest ridgetop wind. Treeline temperature +1 °C. Freezing level 2300m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Brief periods of sun could quickly initiate natural avalanche activity.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Avalanche Problems

Wind Slabs

Wind slabs are possible to trigger in lee terrain features at upper elevations. They may be especially reactive where they sit over a crust.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 1.5

Loose Wet

The sun can pack a punch at this time of year. Expect solar-triggered loose avalanches on steep slopes if the sun comes out.

Aspects: East, South East, South, South West, West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5