[ME]

Avalanche Bulletin - Jasper National Park

Issued Wed Nov 26, 2014 17:00
Valid Until Thu Nov 27, 2014 17:00
The first BIG snowfall of the season heralding in change.

        

Danger Ratings: Thursday

alpine treeline below treeline alpine: 3 - Considerable, treeline: 2 - Moderate, below treeline: N/A - No Rating
alpine: 3 - Considerable
3 - Considerable Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.
  • Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.
  • Natural avalanches possible; human-triggered avalanches likely.
  • Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas.
More...
treeline: 2 - Moderate
2 - Moderate Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
  • Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
  • Natural avalanches unlikely; human-triggered avalanches possible.
  • Small avalanches in specific areas; or large avalanches in isolated areas.
More...
below treeline: N/A - No Rating
N/A - No Rating N/A
N/A
Forecast Friday Saturday
alpine
4 - High 3 - Considerable
treeline 3 - Considerable 2 - Moderate
below treeline N/A - No Rating N/A - No Rating
Confidence: Fair - Due to the number of field observations on Wednesday

Weather Observations

Past 24 Hr WeatherMarmot Basin 0800Columbia Icefields area
Maximum (°C)-9Not Available
Minimum (°C)-11Not Available
Snowfall (cm)0Not Available
Snow Pack (cm)39Not Available
Wind speedLight (1-25 km/h)Not Available
Ridgetop wind directionSNot Available
Past 24 Hr WeatherMarmot Basin 0800Columbia Icefields area
Maximum (°C)-9Not Available
Minimum (°C)-11Not Available
Snowfall (cm)0Not Available
Snow Pack (cm)39Not Available
Wind speedLight (1-25 km/h)Not Available
Ridgetop wind directionSNot Available
Low Moderate Considerable High Extreme
  • Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
  • Natural and human-triggered avalanches unlikely.
  • Small avalanches in isolated areas or extreme terrain.
  • Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
  • Natural avalanches unlikely; human-triggered avalanches possible.
  • Small avalanches in specific areas; or large avalanches in isolated areas.
  • Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.
  • Natural avalanches possible; human-triggered avalanches likely.
  • Small avalanches in many areas; or large avalanches in specific areas; or very large avalanches in isolated areas.
  • Very dangerous avalanche conditions. Travel in avalanche terrain not recommended.
  • Natural avalanches likely; human-triggered avalanches very likely.
  • Large avalanches in many areas; or very large avalanches in specific areas.
  • Avoid all avalanche terrain.
  • Natural and human-triggered avalanches certain.
  • Large to very large avalanches in many areas.

Problem 1: Loose Dry

Which Elevation?

Which Elevation? treeline, alpine

Which Slopes?

Which Slopes? north, southeast, east, northeast

Chance of Avalanches?

Chance of Avalanches? possible

Expected Size?

Expected Size? small - large
Heavy accumulations will heighten the avalanche danger in the alpine and gulley features at lower elevations. Soft storm slab development with the november rain crust as a failure plane on wind loaded terrain. Loose snow sluffing from steep terrain.

Travel and Terrain Advice

  • Be cautious of sluffing in steep terrain.
  • Early season hazards such as rocks, trees and stumps are still visible.