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Remote-triggered avalanches are avalanches that occur away from the point where they are triggered. They happen when a slab fractures the weak layer below it but does not produce an avalanche at the site of the fracture. Instead, the fracture propagates along the weak layer until it reaches a portion of the slab that rests on a slope that is sufficiently steep to avalanche.
Remote triggered avalanches are a strong sign of an unstable snowpack. If you have observed or caused a remote triggered avalanche, a good course of action would be to avoid avalanche terrain. Instead, seek out simple, low angle, and/or densely forested terrain that is free of overhead hazards.