Avalanche Forecast
Issued: Nov 17th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
ross campbell,
Seems like the storm slabs are healing with the cooling temperatures, but I would give it a bit more time before I jumped into anything big and steep!
Summary
Weather Forecast
Continuing cool temps with isolated flurries
Tonight: mainly cloudy, Alpine low -9*C, light winds
Thursday: cloudy with possible flurries Alpine high -8*C, light SW winds
Friday: cloudy with sunny periods, Alpine high -8*C, light SW winds
Saturday: light snow, possibly 10cm by day's end. Alpine temps -10*C, Mod-strong winds
Snowpack Summary
We have very limited snowpack obs still! We do know at lower elevations there is a rain crust with around 10cm of new snow on top of it, and fairly typical early season conditions. The height of snow in the alpine and upper treeline is well above average for this time of year; we are currently 10cm shy of our record height of snow at Mt Fidelity!
Avalanche Summary
A large natural avalanche cycle ripped through Rogers Pass Sunday and Monday to size 3.5; The size and frequency of natural avalanches was an unprecedented event for November. The storm has finished and so has our the large destructive natural avalanches running to valley bottom; however human triggered large avalanches are still possible.
Confidence
Problems
Storm Slabs
Natural storm slab avalanche activity has subsided with cooling temperatures, clear skies, and waning winds. That being said, we received 150mm of precipitation in 36 hours and it may take a bit more time for the storm slabs to completely heal.
- Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.
- Avoid paths that have not avalanched recently.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 18th, 2021 4:00PM
