Avalanche Forecast
Issued: Apr 13th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Cornices.
Ross Campbell,
Skiers and Riders continue to trigger wind slabs and Cornices in the Alpine! Click here to access the Mountain Information Network for more details.
Summary
Weather Forecast
Cold clear air from the North continues to dominate the weather over Rogers Pass. On Thursday expect an Alpine high of -9, light winds from the E, and no precipitation. No real changes on Friday, and we might see a trace of new snow on Sat. No major changes in the short term. Long term we are expecting a gradual warming trend with flurries.
Snowpack Summary
Widespread wind effect in the Alpine and upper treeline has left behind wind slabs on specific terrain features, and scoured the new snow away in others; however, there are still reports of decent conditions in the Alpine in sheltered zones. At Treeline and below the spring snowpack currently has a solid supportive melt-freeze crust.
Avalanche Summary
No new avalanches in the HWY corridor. A close call occurred on Monday, where a small pocket of wind slab nearly took a skier into a crevasse! Click the link here for the full report. On Tuesday several human-triggered size 1 wind slabs occurred on the Ravens. And on Wednesday skiers did some cornice control and triggered a size 3 off of Mt Bonney!
Confidence
Problems
Wind Slabs
Strong winds deposited wind slabs in isolated areas on all asp. On Monday a skier accidental size 1 occurred on a North asp in the Alp. Tuesday several skier controlled slabs size 1 in the ravens and on Wed a skier remote size 1 near the Asulkan.
- Use caution above cliffs and terrain traps where small avalanches may have severe consequences.
- Variable winds have created pockets of wind slab on all aspects.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Cornices
Cornices are LARGE this time of year and becoming brittle with cold temperatures. On Wednesday skiers did some cornice control on Mt Bonney, the large cornice did not pull a slab on the slope but the cornice itself was a size 3 avalanche!
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 14th, 2022 4:00PM
