Vanuatu Rocked by Three Strong Earthquakes; Tsunami Alert Triggers Coastal Fears

VANUATU: The South Pacific island nation of Vanuatu was rocked by three powerful earthquakes early Saturday, triggering fears of a possible tsunami along coastal areas. The tremors, measuring 7.2, 6.9 and 6.3 on the Richter scale, struck within minutes of each other, raising alarm among residents.

According to the United States Geological Survey (USGS), the strongest earthquake, measuring 7.2, occurred at around 8.12 am Indian Standard Time. Its epicentre was located beneath the sea, approximately 200 km west of Sola, the capital of Torba Province.

A second earthquake, measuring 6.9, struck minutes later, northwest of Port Olry village on Espiritu Santo island in Sanma Province. A third tremor, measuring 6.3, followed just 11 minutes later. It was recorded at a depth of around 10 km, raising concerns about the potential impact on coastal areas.

Tsunami fears prompt precautionary measures

The series of earthquakes triggered concerns over possible tsunami waves, prompting authorities to issue precautionary warnings to coastal communities. Residents were advised to stay away from the shoreline and move to higher ground as a safety measure.

There were no immediate reports of major casualties, widespread structural damage or large tsunami waves reaching the coast. However, authorities continued to urge people to remain cautious following the successive tremors.

Why is Vanuatu prone to earthquakes?

Vanuatu lies within the Pacific Ring of Fire, one of the world’s most seismically active regions. The area is characterised by intense tectonic activity, particularly around the New Hebrides Trench, where the movement and interaction of tectonic plates frequently trigger earthquakes and volcanic activity.

According to GeoShake data cited in the report, more than 70 earthquakes of varying magnitudes have been recorded in the Vanuatu region over the past 30 days. Saturday’s 7.2-magnitude tremor was reported to be the strongest earthquake in the region this month.

The latest incident comes just four days after another 6.3-magnitude earthquake struck near Port Olry on October 20, highlighting the region’s continuing seismic activity.

Authorities are urging residents in vulnerable coastal areas to follow official advisories and remain alert to further developments.