Bill Anderson is a Senior Exum Guide and Level 3 avalanche instructor for the American Avalanche Institute. It’s safe to say Bill knows a thing or two about the ins and outs of winter backcountry skiing. So when Bill sits down to discuss the finer details of the ECT—or Extended Column Test—as he does in this article, it’s time to listen: blkd.md/2jI11QJ #liveskirepeat EXUM Mountain Guides | Black Diamond
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Mt Field Shoulder -at 2120 m, NE aspect, extended column test with propagation & CT12 sudden planner on Jan 3 surface hoar size 4-8, down 75 cm | Mountain Safety, Parks Canada
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Is the snowpack ready to slide? ❄️⚠️ Let’s talk about the Extended Column Test (ECT). The ECT is a standard tool for backcountry travelers to check for fracture propagation—the key ingredient for a slab avalanche. How to do it: 1. Isolate your column: Dig a pit and isolate a block 90cm wide by 30cm deep. 2. Setup: Place your shovel blade flat on one side of the column. 3. The 30 Taps: Perform 10 taps from the wrist, 10 from the elbow, and 10 from the shoulder. Watch for the “P”: We’re looking fo
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A weak layer of surface hoar, facets and/or suncrust (Jan 30th) is 20-50cm down. Snowpack tests conducted on a North aspect at 1700m indicate that this layer will be easily triggered and capable of producing large avalanches. Watch out when this layer gets overloaded this weekend! Video: Extended Column Test Propagation on 4 hits, Mt Smart in Rogers Pass, Glacier National Park. | Mountain Safety, Parks Canada
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