Avalanche Bulletin - Northwest Inland
Date Issued:
Valid Until:
Forecaster:MBender
Enough snow may have accumulated to form wind slabs at higher elevations.
| Sat, 14 Dec | Sun, 15 Dec | Mon, 16 Dec | |
|---|---|---|---|
| Alpine | 2 Moderate | 2 Moderate | 1 Low |
| Treeline | 1 Low | 1 Low | 1 Low |
| Below Treeline | 1 Low | 1 Low | 1 Low |
- Uncertainty is due to the limited number of field observations.
Travel and Terrain Advice
- Make observations and assess conditions continually as you travel.
- Wind slabs are most reactive during their formation.
- Carefully evaluate steep lines for wind slabs.
Wind Slab
Forecast Details
Avalanche Summary
There have been no recent reports of avalanche activity. No significant activity is expected until sufficient snow buries the weak surface hoar layer that formed through the last week.
Snowpack Summary
Light accumulations of snow over the past few days has buried a concerning layer of surface hoar that has formed in areas sheltered from the wind (see photos in this MIN report). 10-20 cm of fresh snow may now sit on this layer. This is likely not enough snow to form a slab above, except in places where there are deeper wind deposits. Reports suggest this layer can be found on all aspects up into treeline. In the alpine, the new snow has buried hard wind slabs and/or sun crusts on south-facing terrain. Snowpack depths are 50-100 cm in alpine areas around Smithers, with depths diminishing rapidly below 1500 m. The relatively thin snowpack has likely caused soft weak snow to form near the ground, however triggering an avalanche on weak basal snow is unlikely under the current conditions.
Weather Forecast
FRIDAY NIGHT: Cloudy with clear periods, light wind from the northwest, alpine high temperatures around -7 C.
SATURDAY: Mix of sun and cloud, light wind from the northwest, alpine high temperatures around -8 C.
SUNDAY: Mix of sun and cloud, 40 km/h wind from the northwest, alpine high temperatures around -10 C.
MONDAY: Mainly cloudy with flurries, moderate to strong southwest wind, alpine high temperatures around -6 C.