Avalog Join
Archived

Avalanche Forecast

Mar 28th, 2019–Mar 29th, 2019
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
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Northwest Coastal.

Warm and sunny weather may produce loose snow avalanches, especially on southerly aspects. The danger is rated for the warmest part of the day.

Confidence

Moderate -

Weather Forecast

THURSDAY NIGHT - Mainly clear / light northwest wind / alpine low temperature near +2 / freezing 1700 m FRIDAY - Mainly sunny / light northwest wind / alpine high temperature near +5 / freezing level 1700 mSATURDAY - A mix of sun and cloud / light northwest winds / alpine high temperature near +2 / freezing level 1600 mSUNDAY - A mix of sun and cloud / light northeast winds / alpine high temperature near +4 / freezing level 1600 m

Avalanche Summary

When the sun comes out and temperatures rise during the day, loose wet avalanches will be likely on sun-affected slopes.A few glide slab avalanches up to size 2.5 have been reported near Terrace since Sunday on southerly slopes. Glide slabs typically happen on steep, smooth terrain features such as rock slabs or grassy slopes with little roughness. They are most common on southerly aspects, but during especially warm weather, may occur on shady aspects as well. Slopes with obvious large cracks (glide cracks) as well as slopes with a known history of glide releases are best avoided.

Snowpack Summary

Sun exposed slopes in the alpine and on all aspects at treeline and below are becoming moist to wet during the heat of the day. In these areas spring conditions are in effect; the avalanche hazard will fluctuate greatly depending on the strength of the overnight freeze and how quickly the snowpack is warmed up each day. Check out this guide to managing avalanche hazard during spring conditions HERE.Dry snow remains on shady slopes in the alpine. In these locations, 50-100 cm of well settled snow overlies a layer of weak facets that were buried around March 10th. This is currently the primary layer of concern for human triggering persistent slab avalanches, although recent observations suggest it has become difficult to trigger an avalanche on this layer.Not much further below the March 10th interface is a second weak layer of facets buried on February 19th. Recent loose wet and slab avalanches have been observed gouging into this faceted snow and entraining additional mass.

Avalanche Problems

Loose Wet

When the sun comes out and temperatures rise during the day, loose wet avalanches will be likely to occur on sun-affected slopes.
Avoid terrain traps such as cliffs and gullies that increase the consequence of small avalanches.Avoid sun exposed slopes when the solar radiation is strong, especially if the snow is moist or wet.Cornices become weak with daytime heating, travel early on exposed slopes.

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

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2