Avalanche Bulletin - Waterton Lakes National Park - Sun Dec 17, 2017

Issued: Thu Dec 14, 2017 17:00
Valid Until: further notice

Some areas in Waterton Lakes National Park are now open to the public after the Kenow Fire. Closures are still in effect for other areas due to safety hazards and infrastructure damage. As a result, the frequency of the avalanche bulletin for Waterton Lakes National Park will be reduced. Avalanche bulletins will be specific to areas of the park that remain open.

Winter has been postponed for Waterton.
Please see the up-to-date list of open and closed areas.
[TJ]

Public Avalanche Forecast
Early Season Conditions:  Thursday
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.

More Early Season details.

Past 24 hour weather
Station Maximum (°C) Minimum (°C) Snowfall (cm) Snow Pack (cm) Wind speed Ridgetop wind direction
Little Prairie 1650m 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

Weather Forecast

Strong west winds gusting to extreme (90km/h) are forecasted overnight Thursday and into the morning on Friday. Winds will diminish slightly Friday afternoon bringing snow flurries and a cooling trend for the weekend.

Snowpack Discussion

In the eastern area of the park that is currently open to the public, the only patches of snow are in shaded, wind loaded gullies and depositions at tree-line and the alpine. The valley bottom is largely free of snow.

Avalanche Activity Discussion

A few small wet avalanches from sunny, steep, and rocky alpine terrain observed earlier this week.

For More Details

Emergency: 911
Forecasters: (403) 859-5140

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