Avalanche Forecast

Low - Uncertainty is due to the extreme variability of wind effect on the snowpack. Uncertainty is due to the track & intensity of the incoming weather system.

We’re in for a bit of snow Wednesday night and then just high cloud & wind for the remainder of the forecast period.

WEDNESDAY NIGHT: Moderate south wind, freezing level at valley bottom, 5 to 10 cm of snow expected.

THURSDAY: Overcast, moderate to strong northeast wind, freezing level at valley bottom, trace of snow possible.

FRIDAY: Broken cloud cover, light variable wind, freezing level at valley bottom, no significant precipitation expected.

SATURDAY: Broken cloud cover, moderate southwest wind, freezing level at valley bottom, no significant precipitation expected.

Our field team spotted some large natural avalanches on south/southeast facing slopes Tuesday that likely ran during the storm. The images in this MIN do a great job of showing the pattern of recent wind loading.

Snowfall Wednesday into the early hours of Thursday along with strong wind should allow for the continued formation of potentially touchy slabs.

Strong south/southwest wind has resulted in extensive wind slab and cornice growth in open terrain at all elevations. Mild temperatures have likely allowed last week's 30-50 cm of powder to settle rapidly. On open south-facing slopes the storm snow sits above a sun crust.

At White Pass the snowpack is roughly 200 cm thick with a strong mid and lower snowpack. Thin snowpack areas to the east of White Pass may have a lower snowpack composed of sugary faceted grains, capped by a breakable melt-freeze crust and wind-affected snow.

• Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
• Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
• Seek out sheltered terrain where new snow hasn't been wind-affected.