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Avalanche Forecast - Kananaskis Country    

This forecast produced by the Public Safety staff of Kananaskis Country, Government of Alberta. For more information: avalanche.safety@gov.ab.ca phone: 403-678-5508

Date Issued   Saturday, 19 April 2014 10:00 PM      Valid Until    Sunday, 20 April 2014 9:00 PM

Sunday should be a bit cooler, but pay attention to the temperatures and radiation. Start early and finish early! Mon and Tues will see a spike in hazard due to very high freezing levels both days and rain to mountain top on Tuesday.

Danger Rating: Sunday Alpine Treeline Below Treeline
2 - Moderate Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
3 - Considerable Dangerous avalanche conditions. Careful snowpack evaluation, cautious route finding and conservative decision making essential.
3 - Considerable Dangerous avalanche conditions. Careful snowpack evaluation, cautious route finding and conservative decision making essential.
Monday Tuesday
Alpine 3 - Considerable 4 - High
Treeline 4 - High 4 - High
Below Treeline 4 - High 4 - High
Confidence: Good - Timing, track, or intensity of incoming weather system is uncertain
Learn more about danger ratings
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.

Deep Persistent Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

As temperatures warm through the day and solar radiation increases, the basal weak layers are becoming reactive. Full depth avalanches have been observed in recent days, some of which have been triggered by cornice failures.

Travel and Terrain Advice
  • Minimize exposure to sun exposed slopes when the solar radiation is strong.
  • Be aware of thin areas that may propogate to deeper instabilites.
  • Extra caution needed around cornices with current conditions.
Loose Wet
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

Solar triggered avalanches are occurring on SE through W aspects with regularity. Warming is also a concern on all aspects at lower elevations.

Travel and Terrain Advice
  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.
Wind Slabs
What Elevation Zone?
Which Slopes?
Chance of Avalanches?
Expected Size?

Thin wind slabs are found in the immediate lees of ridgelines. These slabs are generally not bonding well to the crusts underneath.

Travel and Terrain Advice
  • Avoid freshly wind loaded features.

Prepared by jeremy.mackenzie