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RegisterFeb 21st, 2022–Feb 22nd, 2022
Northwest Inland.
Wind slabs have been reactive to human triggers in recent days. As you enter wind affected terrain, watch for wind slabs on all aspects especially near ridge crests and roll-overs.
Monday night: Clear, moderate northeast wind, low of -23.
Tuesday: Increasing cloud in the afternoon, northeast wind shifting northwest and building to strong, high of -12.
Wednesday: Around 5 cm overnight then clearing, wind easing to moderate northwest, high of -7.
Thursday: Sunny, light northwest wind, high of -5.
Natural wind slabs size 1-2 were observed on a northeast aspects in the alpine during the strong wind event on Saturday.
Several skier triggered wind slabs size 1-1.5 have been reported over the past few days, most in predictably wind loaded lees or convexities, near ridgetop, around treeline or higher. On Saturday near Kispiox, a size 1.5 was accidentally triggered on a previously skied slope and ran surprisingly far on the underlying crust.
10-20 cm of recent snow has seen variable wind effect at upper elevations, with exposed windward features scoured down to the crust in some areas in the Babines. Good snow quality can still be found in sheltered terrain.
The recent snow sits over a 10-20 cm thick rain crust which effectively caps the underlying snowpack, making human triggering of avalanches on weak layers deeper in the snowpack very unlikely. Large cornice failures may still have potential to trigger these deeper layers.