New wind slabs will develop with forecast snow accompanied by southeasterly winds. They will be found at the top of the west and north-west slopes in the alpine.
It will be necessary to assess their presence and their distribution because, even of small size, their triggering can have serious consequences of an uncontrolled slide on the crust.
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Isolated wind slabs are possible at the top of SW-W-NW-N leeward slopes. Although small, their triggering can have serious consequences of an uncontrolled slide over the crust and towards obstacles lower on the slope.
No new avalanches were observed or reported.
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New snow will continue to accumulate on the surface as well as in downwind areas, reaching 5 to 15 cm thick. It covers a widespread crust of variable thickness, which is present on the surface in wind exposed areas in the alpine and at treeline. Snow that is still dry may be found on some northern slopes, in wind-protected areas, at and below treeline. The middle of the snowpack is well consolidated.
In general, the height of the snowpack varies from 80 to 100 cm in the valley to 110 to 160 cm in the middle mountains.
Forecast for the Chic-Chocs ridges and summits.
Synopsis: A low pressure system from the Great Lakes will bring some snow over the weekend.
Friday evening and night: Snow, 5-7 cm, southeasterly winds 30-40 km/h, minimum -3 C, freezing level at valley bottom.
Saturday: Periods of light snow, no accumulation, southerly winds 10 to 20 km/h, maximum -2 C, freezing level at 650 m.
Sunday: Snow overnight then cloudy, 3-5 cm, westerly winds 40 to 60 km/h, maximum -7 C, freezing level at valley bottom.
Monday: Snow overnight then clearing, 3-5 cm, northwesterly winds 40 to 50 km/h, maximum -12 C, freezing level at valley bottom.
For more details, see the Chic-Chocs alpine forecast.
