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Archived

Avalanche Forecast

Feb 25th, 2024–Feb 26th, 2024
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
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

Regions: Boundary, East Stikine, Howson, Kispiox, Kitimat, Nass, Ningunsaw, Northwest Coastal, Northwest Inland, Rupert, Seven Sisters, Shames, Stewart, West Stikine.

Ease into terrain cautiously and watch for signs of instability in the recent snow.

Confidence

Moderate

Avalanche Summary

Natural, rider, and remotely triggered wind slab avalanches size 1-2 were reported throughout the region over the last two days. Most were on north aspects at treeline and above. The failure plane has been predominantly facets under the recent storm snow, but in some cases slabs ran on a buried crust with crowns 50 to 100 cm deep.

Snowpack Summary

20 to 50 cm of new snow sits over predominantly faceted and wind-affected surfaces, as well as surface hoar in wind-sheltered terrain.

A thick crust that formed in late January is now buried 50 to 100 cm deep. It has been a problematic layer for step-downs in wind-loaded areas.

Below, the mid and lower snowpack is generally well-bonded and strong.

Weather Summary

A clearing and cooling trend to start the week. Colder end of forecast temperature ranges are for areas north of Stewart.

Sunday night

Snow tapering, up to 5 cm. 20 to 40 km/h west ridgetop wind shifting north. Treeline temperature -10 to -18 °C.

Monday

A mix of sun and cloud. 10 to 20 km/h northeast ridgetop wind. Treeline temperature -10 to -16 °C.

Tuesday

Mostly cloudy with 5-10 cm of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -10 to -16 °C.

Wednesday

Mostly cloudy with flurries bringing up to 5 cm. 20 to 40 km/h south ridgetop wind. Treeline temperature -8 to -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be carefull around freshly wind loaded features.
  • Potential for wide propagation exists, fresh slabs may rest on surface hoar, facets and/or crust.

Avalanche Problems

Storm Slabs

Recently formed slabs may be slow to bond to underlying surfaces. If triggered, they could step down to a buried crust, 60 cm deep or more in wind loaded areas.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2