Researchers reported an unusually intense swarm of earthquakes in March 2024 near an undersea volcanic area off the Pacific Northwest. Ocean Networks Canada reported thousands of small events during a period of elevated activity, which scientists associated with possible movement of magma beneath the seafloor. The original commentary raised concerns about the Cascadia Subduction Zone, but the volcanic swarm did not by itself establish that a major Cascadia earthquake or tsunami was imminent. The event highlights the importance of distinguishing observations of seismic activity from predictions of future disasters.
