[AH]

Avalanche Bulletin - Jasper National Park

Issued Wed May 07, 2014 17:00
Valid Until further notice
Jasper's daily avalanche bulletin service has concluded for the summer season.  Please contact Jasper Visitor Safety staff at (780) 852 6155 for trip planning assistance and advice.

        

Danger Ratings: Thursday

alpine treeline below treeline alpine: N/A - No Rating, treeline: N/A - No Rating, below treeline: N/A - No Rating
alpine: N/A - No Rating
N/A - No Rating N/A
N/A
treeline: N/A - No Rating
N/A - No Rating N/A
N/A
below treeline: N/A - No Rating
N/A - No Rating N/A
N/A
Forecast Friday Saturday
alpine
N/A - No Rating N/A - No Rating
treeline N/A - No Rating N/A - No Rating
below treeline N/A - No Rating N/A - No Rating

Weather Observations

Past 24 Hr WeatherMarmot Basin 0800Columbia Icefields area
Maximum (°C)Not AvailableNot Available
Minimum (°C)Not AvailableNot Available
Snowfall (cm)Not AvailableNot Available
Snow Pack (cm)Not AvailableNot Available
Wind speedNot AvailableNot Available
Ridgetop wind directionNot AvailableNot Available
Past 24 Hr WeatherMarmot Basin 0800Columbia Icefields area
Maximum (°C)Not AvailableNot Available
Minimum (°C)Not AvailableNot Available
Snowfall (cm)Not AvailableNot Available
Snow Pack (cm)Not AvailableNot Available
Wind speedNot AvailableNot Available
Ridgetop wind directionNot AvailableNot 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: Wind Slabs

Which Elevation?

Which Elevation? alpine

Which Slopes?

Which Slopes? east, southeast, south, southwest, west, northwest, north, northeast

Chance of Avalanches?

Chance of Avalanches? possible

Expected Size?

Expected Size? small - large
New snow and wind can create windslab conditions through out the summer season. Monitor the weather and pay attention to avalanche activity for clues to slab sensitivity.

Travel and Terrain Advice

  • Be cautious as you transition into wind affected terrain.

Problem 2: Wet Slabs

Which Elevation?

Which Elevation? alpine

Which Slopes?

Which Slopes? northeast, north, northwest, west, southwest, south, southeast, east

Chance of Avalanches?

Chance of Avalanches? possible

Expected Size?

Expected Size? small - large
Wet slab avalanche conditions are possible especially on hot sunny days.

Travel and Terrain Advice

  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.

Problem 3: Loose Wet

Which Elevation?

Which Elevation? alpine

Which Slopes?

Which Slopes? northeast, north, northwest, west, southwest, south, southeast, east

Chance of Avalanches?

Chance of Avalanches? possible

Expected Size?

Expected Size? small - large
Loose wet avalanches are possible especially on warm sunny days. Snow filled gulley features or gulleys below snow filled slopes should be avoided.

Travel and Terrain Advice

  • Be very cautious with gully features.