Avalanche Bulletin - South Coast Inland

Avalanche Bulletin - South Coast Inland

Date Issued:

Valid Until:

Forecaster:shorton

Watch for heightened avalanche conditions as you climb to elevations where recent snow has accumulated.

Tue, 26 AprWed, 27 AprThu, 28 Apr
Alpine2 Moderate1 Low1 Low
Treeline1 Low1 Low1 Low
Below Treeline1 Low1 Low1 Low
Confidence: Moderate
  • Uncertainty is due to the limited number of field observations.

Travel and Terrain Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.

Cornice

Cornices may be weak and reactive to human triggers. They create a significant falling hazard, and may produce large slab avalanches as they fall onto the slope below.

Wind Slab

Wind slabs formed in the alpine on Monday, and remain possible to trigger on certain lee slopes.

Forecast Details

Avalanche Summary

On Monday, there were reports of a few large (size 2) wet loose avalanches at the Coquihalla, which has been the primary type of avalanche reported from the south of the region over the past week. There have been limited reports of avalanches in the north of the region, however, there was one notable human-triggered avalanche near Pemberton on Saturday. This large (size 2) slab avalanche occurred on a southeast slope at 2000 m (see photos in the MIN report).

Snowpack Summary

Winter conditions persist at upper elevations, as recent stormy weather has delivered 5 to 20 cm of new snow at elevations above 1200 m. In most areas this snow will sit above hard crust layers, while lower elevations will have moist and rain soaked surfaces. Dry snow has been reported above 2000 m on north aspects prior to this storm.

The lower snowpack should be strong under the current cool weather. In northern parts of the region, there may be a few deeply buried crust layers to monitor once the weather shifts to warmer spring-like conditions.

Weather Forecast

MONDAY NIGHT: Mostly cloudy, no significant precipitation, light wind from the southwest, treeline temperatures drop to -7 C.

TUESDAY: Mostly cloudy, isolated flurries with up to 5 cm of snow, light wind from the southwest, treeline temperatures reach -4 C.

WEDNESDAY: Mix of sun and cloud, isolated flurries with trace amounts of snow, light wind from the southwest, treeline temperatures around -4 C.

THURSDAY: Mostly sunny, no precipitation, light wind, treeline temperatures reach -2 C.

Source: avalanche.ca

Avalanche Bulletin - South Coast Inland