Reactive wind slabs in combination with buried weak layers necessitate simple, low-angled terrain selection.
Easterly winds on Tuesday will form fresh, reactive slabs throughout the day. Recent winds have varied in direction, so be cautious on all aspects. Wind slabs overlie a weak layer of facets and could create surprisingly large avalanches.
Cornices are large, looming, and may trigger large persistent slabs on slopes below.
There are multiple persistent weak layers of facets or crust/facets combinations in the top 100 cm of the snowpack. Avoid steep, rocky, and wind affected areas where triggering these slabs is more likely.
A very large avalanche resulted in a fatality on March 22 near Mt McDonell. More information can be found here.
Cornices are large and looming. Avoid travelling underneath them.
40 to 60 cm of recent snow and strong winds have formed storm slabs over a weak layer of crust/facets that have recently been reactive to human triggers.
There are multiple persistent weak layers of facets or crust/facets combinations in the top 200 cm of the snowpack. These layers are most likely to trigger in wind-affected areas or a shallow or thick-to-thin snowpack.
Monday Night
Mostly clear skies. 10 km/h southeast ridgetop wind. Treeline temperature -12 °C.
Tuesday
Mostly sunny. 20 to 40 km/h northeast ridgetop wind. Treeline temperature -12 °C.
Wednesday
Mix of sun and clouds. 30 km/h northeast ridgetop wind. Treeline temperature -14 °C.
Thursday
Mix of sun and clouds. 20 km/h east ridgetop wind. Treeline temperature -16 °C.
More details can be found in the Mountain Weather Forecast.
