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Kootenay-Boundary

Avalanche danger will gradually increase in wind-affected terrain this week.

Danger ratings

Alpine
1 - Low
Treeline
1 - Low
Below Treeline
1 - Low
Alpine
2 - Moderate
Treeline
2 - Moderate
Below Treeline
1 - Low
Alpine
2 - Moderate
Treeline
1 - Low
Below Treeline
1 - Low

Travel and Terrain Advice

  • Be alert to conditions that change with elevation and wind exposure.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

Problems

Avalanche Problem 1: Wind Slab

What Elevation?
What Elevation? Alpine
Which Slopes?
Which Slopes? North, Northeast, East, Southeast, south, Northwest
Chances of Avalanches?
Chances of Avalanches? Unlikely - Possible
Expected Size?
Expected Size? Small - Small

As wind increases on Tuesday and Wednesday we expect to see some unstable slabs forming on leeward terrain, especially along ridges. Wind slabs could be poorly bonded to the underlying crust.

Details

Avalanche Summary

No avalanches were reported over the weekend, except for one explosive triggered storm slab involving recent snow above the crust.

Snowpack Summary

Up to 20 cm low density snow is poorly bonded to a widespread and supportive crust. Fun pockets of powder may be found in sheltered areas and depressions. The snowpack is generally well consolidated. At upper elevations a few crusts may be found in the lower snowpack, while at mid and lower elevations the entire snowpack was saturated and is now frozen and uniform.

Snowpack depths at treeline range from 50-110 cm, with alpine depths exceeding 120 cm in areas. Snowpack depths decrease rapidly below 1800 m.

Check out our latest Forecaster Blog here.

Weather Summary

MONDAY NIGHT: Clear skies, no precipitation, light wind from the northwest, treeline temperatures around -12 C.

TUESDAY: Increasing cloud throughout the day, no precipitation, light to moderate wind from the southwest, treeline temperatures warm to -8 C.

WEDNESDAY: Flurries bring 5-15 cm of low density snow, moderate wind from the west, treeline temperatures around -10 C.

THURSDAY: Mostly cloudy skies, no precipitation, light wind from the southwest, treeline temperatures around -8 C.

Confidence
High

  • The snowpack structure is mostly striaghtforward and not unusually variable.
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Read the Monday, December 6, 2021 avalanche forecast
Danger Ratings Explained

1 - 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.

2 - 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.

3 - 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.

4 - 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.

5 - Extreme

Avoid all avalanche terrain.

Natural and human-triggered avalanches certain.

Large to very large avalanches in many areas.

Avalanche Forecasts in your Inbox

Avalanche Canada has switched to an RSS feed for its daily forecasts. This is a much more flexible method that allows automatic delivery to your email inbox, or to an RSS reader of your choice.

What are RSS feeds?

RSS (Really Simple Syndication) is a popular standardized file format allowing up-to-date delivery of web-based content. RSS feeds enable you to receive content updates from websites, delivered to your email through an RSS aggregator (such as blogtrottr.com) or viewed through applications called RSS readers (such as feedly.com).

Set up an RSS feed for your email:

Once you have chosen your favourite RSS aggregator:

  1. Copy the URL of the forecast you interested in and paste it into the appropriate field of your RSS aggregator, a list is provided below.
  2. Fill in your email address.
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List of avalanche forecast RSS feeds

  • Cariboos — https://avalanche.ca/api/forecasts/cariboos.rss
  • Kananaskis Country, Alberta Parks — https://avalanche.ca/api/forecasts/kananaskis.rss
  • Kootenay Boundary — https://avalanche.ca/api/forecasts/kootenay-boundary.rss
  • Lizard Range and Flathead — https://avalanche.ca/api/forecasts/lizard-range.rss
  • North Columbia — https://avalanche.ca/api/forecasts/north-columbia.rss
  • North Rockies — https://avalanche.ca/api/forecasts/north-rockies.rss
  • Northwest Coastal — https://avalanche.ca/api/forecasts/northwest-coastal.rss
  • Northwest Inland — https://avalanche.ca/api/forecasts/northwest-inland.rss
  • Purcells — https://avalanche.ca/api/forecasts/purcells.rss
  • Sea To Sky — https://avalanche.ca/api/forecasts/sea-to-sky.rss
  • South Coast — https://avalanche.ca/api/forecasts/south-coast.rss
  • South Coast Inland — https://avalanche.ca/api/forecasts/south-coast-inland.rss
  • South Columbia — https://avalanche.ca/api/forecasts/south-columbia.rss
  • South Rockies — https://avalanche.ca/api/forecasts/south-rockies.rss
  • Yukon — https://avalanche.ca/api/forecasts/yukon.rss
Forecast by Text

Avalanche Canada and Avalanche Québec forecasts can now be accessed via text message for users spending time recreating outside of cellphone range. These are text forecasts, and they should only be used if you are unable to access the full forecast through our website or app. For more information, click here.

Forecast Disclaimer

USE AT YOUR OWN RISK

Avalanche Canada's Public Avalanche Bulletin, and other information and services provided by Avalanche Canada, are intended for personal and recreational purposes only.

**THIS INFORMATION IS PROVIDED "AS IS" AND IN NO EVENT SHALL THE PROVIDERS BE LIABLE FOR ANY DAMAGES, INCLUDING, WITHOUT LIMITATION, DAMAGES RESULTING FROM DISCOMFORT, INJURY, OR DEATH, CLAIMS BY THIRD PARTIES OR FOR OTHER SIMILAR COSTS, OR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, ARISING OUT OF THE USE OF THE INFORMATION.**

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