Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Rising freezing levels may increase avalanche activity. There may be isolated pockets of reactive wind slab where a buried surface hoar layer exists.
Avalanche danger is expected to increase with warm mountain top temperatures and sunny skies. Conditions may change quickly, so back off slopes and use extra caution by the afternoon.
Rising freezing levels may increase avalanche activity. There may be isolated pockets of reactive wind slab where a buried surface hoar layer exists.
Rising freezing levels and sunshine will drive a widespread wet loose avalanche problem.
No new avalanches have been reported. On, January 30-31, numerous natural, human triggered, and explosive-triggered avalanches were reported throughout the region. All occurring on the mid-January buried surface hoar/facet/crust layer.
Avalanche activity will spike with solar radiation and warming to mountain top on Wednesday.
15 to 25 cm of moist snow sits over a surface hoar and/or crust layer. Strong southwest wind may have formed pockets of stiff wind slab on northeast slopes. The buried surface hoar is largest in sheltered treeline and below treeline features.
The mid and lower snowpack is well settled.
Check out this MIN for more details.
Tuesday Night
Partly cloudy. 40 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2700 m.
Wednesday
Mix of sun and clouds. 40 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 3200 m.
Thursday
Mostly sunny. 30 km/h southwest ridgetop wind. Treeline temperature 6 °C. Freezing level 3100 m.
Friday
Mix of sun and clouds. 40 km/h south ridgetop wind. Treeline temperature 4 °C. Freezing level 3000 m.
More details can be found in the Mountain Weather Forecast.