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</style><p class="p_CC664AAA"><span class="s_3FE45715">A snowmobiler was fatally involved in a large (size 2) slab avalanche on Saturday in the Oventop Creek area in the Bone Creek drainage. This is in the adjacent North Columbia region. The avalanche was triggered by the rider at 2100 metres on a south aspect. The crown fracture was 15-100 cm deep by 40 metres wide and the avalanche ran 300 metres.</span></p><p class="p_CC664AAA"><span class="s_3FE45715">On Friday avalanches failed on the mid-January surface hoar to size 1 on north and northeast facing slopes between 1700 and 2000 m. The persistent weak layer that was buried in mid January continues to be reactive to human triggers. Human triggered avalanches up to size 2.5 have been reported almost everyday in the last week. This layer is sensitive enough for avalanches to be triggered remotely (from a distance). This layer has been the most reactive at treeline and below, although there have been a few reports of its presence in isolated sheltered areas in the alpine. </span><a href="https://www.avalanche.ca/map?panel=mountain-information-network-submissions/00da562a-e39b-43cd-ba18-88339307252a" target="_blank"><span class="s_B5813F7D">Click here to see a Mountain Information Network post that described conditions in Allen Creek on Wednesday.</span></a><span class="s_AA239A9B" /></p><p class="p_CC664AAA"><span class="s_AA239A9B">Strong to extreme north, northeast and east wind over the last 72 hours has created wind slabs that may remain sensitive to human triggering in wind exposed features.</span></p>