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Archived

Avalanche Forecast

May 1st, 2015–May 2nd, 2015
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Glacier.

This is the final daily avalanche bulletin for the season. We will update if there are significant changes. Contact the Visitor Safety staff at Rogers Pass for help with safe trip planning in the spring and summer seasons.

Weather Forecast

Check out the following websites to help forecast the mountain weather:https://www.snow-forecast.com/https://spotwx.com/ (drop a spot on the map to find weather models)

Snowpack Summary

The isothermal snowpack is receding quickly below 2000m. Winter conditions persist in the alpine where precipitation continues to fall as snow. A 10cm blanket of new snow belies the complexity of the upper snowpack which contains several persistent crusts. Expect to find newly formed cornices and windslabs near ridges from strong southerly winds.

Avalanche Summary

3 large loose wet natural avalanches were observed yesterday in the highway corridor. One of these avalanches was triggered by falling ice from a melting waterfall.

Confidence

Avalanche Problems

Loose Wet

Rain and rising daytime temperatures continue to weaken the snowpack. These avalanches gain mass quickly and often start small and end large.
Be increasingly cautious on sun exposed slopes.Start and finish early before the surface crusts melt.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

New snow has been loaded onto exposed lee features by strong SW winds. Strong winds will continue today. Deeper pockets of reactive wind slab are most likely to exist in the same areas as the most appealing skiing.
Be cautious as you transition into wind affected terrain.Use caution in lee areas. Recent wind loading have created wind slabs.

Aspects: North, North East, East, South East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Large cornices will become weaker with continued mild temps and the weight of new rain and snow.
Give cornices a wide berth when travelling on or below ridges.Pay attention to overhead hazards like cornices.

Aspects: North, North East, East, South East, South.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3