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Size 3 In the Cheam Range

Published
Jan 9th, 2021 12:00 PM
Eddy Van Der Kloot
Cariboos
Details

Type

avalanche

Coordinates

49.172990, -121.656790

Avalanche Information

Saw a huge crown on the small peak between Lady and Knight. The crown was very obvious even from our far removed position on the road 9.5km away. It propagated the full way across the face. A look at a map shows this to be about 120m across. It's tough to see in the photo since my iPhone camera can't do a good job of photographing from that far away on a face in the shade, but if you zoom in you can see the crown quite clearly. Given how large it appeared from nearly 10k away, I'd guess that the crown was at least 2m deep. The weather station at Wahleach Lake at 1480m reports SWE increasing about 115mm in the last week, so it's not clear to me whether this was a huge wind slab like the one recently pictured on Baker, or if it broke on a PWL deeper in the snowpack. We weren't able to see how far the debris ran because the shade on the face obscured all but the largest features (i.e. the huge crown), but given the depth and width of the crown and the length of the steep slope below, I'd guess that this was a size 3+ avalanche. It didn't appear that this slide was a step-down event. We didn't see any other slides on the N faces of the Cheam Range, but again, the shade kept things quite hard to see. I suspect that there were several smaller slides on these faces as well. I'm not sure when this slid, but it appears that I'm required to input a time. Take that date and time with a huge grain of salt - but it does appear that this ran during the last big storm cycle.