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Archived

Avalanche Forecast

Mar 9th, 2024–Mar 10th, 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
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
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: North Okanagan, Shuswap, South Okanagan.

Evaluate slopes as you travel, looking for signs of instability.

Continue to minimize exposure to large open slopes, uncertainty exists over the reactivity of buried weak layers.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the last 2 days.

Recent reports from this region have been limited to small slab avalanches, up to size 1.5. Neighboring regions have observed ongoing large avalanche activity on the buried weak layer of facets over a crust. Although not as large or likely in this region, triggering persistent slabs is still a concern as this layer is present.

Snowpack Summary

Surface conditions include sun crusts on south facing slopes, wind-affected snow, and small amounts of settling snow.

A widespread crust that formed in early February is now buried 40-90 cm deep, with a weak layer of facets above it. In neighboring regions, this layer has produced many large avalanches over the past week.

The snowpack below this crust is strong and well bonded.

Weather Summary

Saturday Night

Mostly cloudy. 30-50 km/h southwest ridgetop wind. Freezing level remains around 1000 m overnight.

Sunday

Cloudy with up to 5 cm of snow. Southwest winds ease over the day from 50 km/h to 20 km/h by afternoon. Freezing levels peak around 1500 m, treeline temperature -2 °C.

Monday

Partly cloudy with isolated flurries. 20-30 km/h southerly ridgetop wind. Freezing levels around 1500 m, treeline temperature -2 °C.

Tuesday

A mix of sun and cloud. 20-40 km/h southerly ridgetop wind. Freezing levels around 1500 m, treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • This avalanche problem is difficult to trigger but if so, consequences are serious.
  • Choose slopes that are well supported and have limited consequence.
  • Avoid rock outcroppings, convexities, and anywhere the snowpack is thin and/or variable.

Avalanche Problems

Persistent Slabs

A layer of facets on a crust is producing large and destructive avalanches across the province. In this region, it is buried 40-90 cm deep and potentially triggerable on steep slopes at treeline and above.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 2.5