54 tremors: What is an 'earthquake swarm'? Why dozens of quakes are shaking Masbate, Philippines — what volcanologists say it means

Phivolcs logs earthquake swarm off Masbate; urges locals to be alert

MANILA – The Philippine Institute of Volcanology and Seismology (Phivolcs) has recorded an earthquake swarm of 54 incidents off the coast of Claveria, Masbate, and urged residents near the