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 shoreline to remain vigilant and be aware of natural warning signs of a possible tsunami.

According to Philippines News Agency, in a social media post on Tuesday, the Department of Science and Technology (DOST)-Phivolcs stated that the incidents were logged from 8:52 a.m. on July 13 to 4 p.m. on July 14. Out of these, five earthquakes were felt at Intensity V based on the Earthquake Intensity Scale. The earthquakes ranged in magnitude from 1.6 to 5.4 and occurred at depths between 1 and 45 kilometers.

While there is no certainty that the swarm will escalate into a stronger earthquake, the agency has advised residents, especially those in coastal areas, to remain alert. Phivolcs has emphasized the importance of earthquake preparedness and being attentive to natural warning signs of a potential local tsunami.

Phivolcs explained that an earthquake swarm is a series of earthquakes closely clustered in space and time, without a clearly defined pattern. Unlike typical sequences of a major earthquake followed by aftershocks, earthquake swarms occur without a clearly identifiable mainshock and may persist for extended periods.

The agency noted that an earthquake swarm may or may not lead to stronger earthquakes. It advised residents to familiarize themselves with the safest and fastest evacuation routes, prepare emergency supply kits, and remember to duck, cover, and hold during an earthquake.

For coastal communities, Phivolcs reiterated the natural warning signs of a possible local tsunami, such as a strong, long-lasting earthquake (shake), unusual sea behavior (drop), and a loud roaring sound from the ocean (roar). Residents are advised to move to higher ground immediately upon observing any of these signs.

Phivolcs urged the public to adhere to instructions from local government units and official advisories issued by DOST-Phivolcs. The agency assured it would continuously monitor seismic activity in the area and issue updates as necessary. Official information and updates will be posted on its website and official social media accounts.