Avalanche Bulletin - Banff, Yoho, and Kootenay National Parks - Sun Oct 18, 2020

Issued: Mon Oct 12, 2020 17:00
Valid Until: further notice

Snow is falling in the alpine signalling the transition to winter. Regular bulletin updates will start November 1st depending on conditions [IJ]

Public Avalanche Forecast
Early Season Conditions:  Monday
Early Season Conditions

Insufficient observations exist to reliably rate the avalanche danger. Expect shallow snow cover with thinly buried rocks and trees just beneath the surface. Avalanche danger often concentrates in gullies and other deposition areas, where windslabs may bond poorly to a weak underlying base. Deeper snow usually exists at higher elevations.

Past 24 hour weather
Station Maximum (°C) Minimum (°C) Snowfall (cm) Snow Pack (cm) Wind speed Ridgetop wind direction
Simpson 2115/2320m Not Available Not Available Not Available Not Available Not Available Not Available
Bow Summit 2040m Not Available Not Available Not Available Not Available Not Available Not Available
Sunshine 2200m Not Available Not Available Not Available Not Available Not Available Not Available
Low
  • 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.
Moderate
  • 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.
Considerable
  • 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.
High
  • 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.
Extreme
  • Avoid all avalanche terrain.
  • Natural and human-triggered avalanches certain.
  • Large to very large avalanches in many areas.
Forecast Details

Snowpack Discussion

Snow is sticking to the ground in high alpine areas. These layers will become the base for our upcoming seasons snowpack.

Avalanche Activity Discussion

Potential for avalanche danger exists in high alpine areas with smooth ground cover.  There have already been a few reports of avalanches from areas like this (ex. ramp route on Mt. Athabasca).

For More Details

Emergency: (403) 762-4506
Forecasters: (403) 762-1470

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