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The chances of a massive earthquake striking B.C.'s south coast will be somewhat higher than normal in April. Seismologists project the region will soon enter another period of what they call "episodic tremor and slip" (ETS) activity.
ETS periods happen every 14 months and are marked by more small tremors and increased movement as the Juan de Fuca plate grinds underneath the North American plate along what's known as the Cascadia subduction zone.