Backcountry

Avalanche Advisory

Forecast provided by Avalanche Canada.

Daily avalanche forecasts are due to start on Friday, November 23, 2018.

 

Patrol - Emergency

For on hill emergencies only

604-935-5555
 

BACKCOUNTRY ADVISORY

Issued at: 2/21/2019 12:19:52 AM Valid to: 2/21/2019 10:00:00 PM

This three day avalanche hazard forecast is prepared for the Sea to Sky Region including surrounding areas of Whistler Blackcomb - Terrain easily accessible as a day tour from Whistler Blackcomb’s boundaries. This advisory refers to areas outside the ski are boundary.

AVALANCHE SUMMARY

No new avalanches were observed on Tuesday.

SNOWPACK SUMMARY

Between 10 and 30 cm of low-density faceted snow sits on old hard surfaces including wind-affected snow and melt-freeze crusts. The low-density snow may sluff easily on these hard surfaces. Thin wind slabs may be found in the alpine. Moist snow may be found on steep south aspects when the sun is out.

The lower snowpack is strong and settled.

WEATHER FORECAST

WEDNESDAY NIGHT: Clear skies, light to moderate northeast wind, alpine temperature -10 C.

THURSDAY: Clear skies, light northwest wind, alpine temperature -10 C.

FRIDAY: Cloudy with snowfall, accumulation 10 cm, moderate southwest wind, alpine temperature -11 C.

SATURDAY: Cloudy with light snowfall, accumulation 1 to 3 cm, light southwest wind, alpine temperature -11 C.

CONFIDENCE

High -

TODAY'S DANGER SCALE

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

DANGER SCALE FORECAST

OVERVIEW Thursday Friday Saturday
Alpine Moderate Moderate Moderate
Treeline Low Moderate Moderate
Below treeline Low Low Low

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.
  • Naturale 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.

Wind Slabs

Small pockets of wind slabs may exist from recent strong winds.

What Elevations?
What Aspect?
Chances of Avalanches?
Expected Size?

Travel and Terrain Advice

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

FORECAST DISCLAIMER

USE AT YOUR OWN RISK:

The Whistler Blackcomb 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.

The user acknowledges that it is impossible to accurately predict natural events such as avalanches in every instance, and uses the data in the bulletin with this always foremost in mind. The accuracy or reliability of the data is not guaranteed or warranted in any way and the Providers disclaim liability of any kind whatsoever, including, without limitation, liability for quality, performance, merchantability and fitness for a particular purpose arising out of the use, or inability to use the data.