Avalanche Forecast
Issued: Nov 19th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Kate Ryan,
Travel below 1800m is rugged!
Allow extra time for egress to navigate the awkward crust extravaganza.
Summary
Weather Forecast
Tonight: trace of snow, freezing level (fzl) 500m, wind from the SW 25-45km/h
Tomorrow: trace of snow, fzl 900m, wind SW 30-40km/h
Sunday: 5cm snow, fzl rising to 1100m, wind SW 30km/h
Snowpack Summary
On Wednesday, our team dug a profile at treeline on a SE aspect @ ~2100m on Mt Fidelity. Our profile showed a height of snow of 222cm with the top 140cm being storm snow. No significant test results were observed within the storm snow at this location. The November 15th crust is widespread below 1800m, and makes travel exceptionally poor.
Avalanche Summary
No new natural or human triggered avalanches have been observed or reported from the back country and highway corridors. We registered the Howitzers yesterday firing artillery at very steep terrain in the highway corridor with little to no result. And for those that missed it, there was a very large avalanche cycle on Sunday and Monday to size 4!
Confidence
Problems
Wind Slabs
With the increase in wind values this weekend, fresh windslabs are likely to form near ridge-crests and on cross loaded features. There is a lot of snow available for transport in the alpine!
- Use caution in lee and cross-loaded terrain near ridge crests.
- Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Nov 20th, 2021 4:00PM
