Repeat: NO Tsunami Danger.' The tremor occurred in the Blanco Fracture Zone (BFZ), deemed more active than California's San Andreas Fault. Harold Tobin, director of the Pacific Northwest Seismic ...
the one Wednesday was in the Blanco Fracture Zone, where quakes are quite common. The Cascadia Subduction Zone is a 600-mile-long (965-kilometer) fault just off the coast that runs from Northern ...