Avalanche Forecast
Issued: Nov 21st, 2024 1:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Mikey,
Avalanche Canada
We have had upwards of 35cm of new snow this week with another 10cm forecast. Winds are expected to increase on Friday and bring the hazard to Considerable. Be cautious when approaching tree line and open areas.
Summary
Confidence
Moderate
Avalanche Summary
3 new avalanches within the storm interface were observed today in the Highwood Pass region and 1 along the Spray road. As the winds increase on Friday, we will get to the tipping load to trigger avalanches. This photo is in the Dogleg area along the Spray Road that happened sometime on Thursday.
Snowpack Summary
Another 15cm of snow on Wednesday night for an average storm snow of 20-35cm. The height of the snowpack varies from 60-90cm.
The forecasters went into the Pocaterra region at Highwood Pass today. The two layers that we are tracking right now are the storm interface down about 30cm and the October crust down 40-50cm. The recent storm snow is settling and has produced a few new avalanches in the last 48hrs. The October crust is predominant on North and East aspects and not observed on South aspects but is still producing whumphing. As the winds increase on Friday, the rating will become Considerable.
Weather Summary
See image Below. Temperatures on Friday will be between -4 and -9c.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
- Be cautious of buried obstacles, especially below treeline.
- Keep in mind a buried crust offers an excellent bed surface for avalanches.
Problems
Wind Slabs
Dig down to evaluate the recent HST interface. This layer seems more reactive in the Highwood zone that recieved more snow.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
This slab is sitting on the October crust which has facets above it and provides a good sliding surface.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 22nd, 2024 3:00PM
