Japan issues tsunami advisory for Pacific coastal regions
Powerful 7.8 magnitude earthquake strikes southern Philippines waters
Tokyo: Authorities in Japan, the Philippines and Indonesia issued tsunami advisories and warnings on Monday after a powerful 7.8-magnitude earthquake struck waters off the southern Philippines, triggering concerns about possible tsunami waves across parts of the Pacific region.
Japan’s Meteorological Agency issued tsunami advisories for a wide stretch of the country’s Pacific coastline, extending from Ibaraki Prefecture in eastern Japan to Okinawa Prefecture in the south. Officials urged residents in coastal communities to remain alert and follow instructions from local authorities as tsunami waves generated by the quake could reach Japanese shores.
The earthquake occurred at 7:37 a.m. local time in the Philippines, according to the Philippine Institute of Volcanology and Seismology (PHIVOLCS). The agency reported that the tectonic earthquake measured magnitude 7.8 and struck at a depth of approximately 33 kilometres beneath the seabed.
PHIVOLCS said the epicentre was located about 32 kilometres southwest of the coastal town of Maasim in Sarangani Province on Mindanao Island. The quake was felt strongly across several parts of the southern Philippines, with residents reporting prolonged shaking that caused panic in some communities.
Following the earthquake, Philippine authorities immediately issued tsunami warnings covering nine coastal provinces. Residents living near shorelines were strongly advised to evacuate to higher ground or move farther inland as a precautionary measure. Disaster response teams were placed on alert and local governments began implementing emergency evacuation plans.
Officials warned that tsunami waves could arrive along affected coastlines within hours and that wave activity might continue throughout the day. Authorities urged residents not to return to coastal areas until official clearance had been issued.
Local media reports indicated that the earthquake caused damage to several buildings and infrastructure in parts of Mindanao. Some areas also experienced temporary power outages following the tremor. Emergency services were deployed to assess the extent of damage and assist affected communities.
Strong shaking was also felt in neighbouring provinces, prompting residents to leave homes, offices and commercial buildings as a safety precaution. Videos shared on social media showed people gathering in open spaces while authorities conducted inspections of structures that may have been affected.
Despite the strength of the earthquake, there were no immediate reports of significant casualties or widespread destruction in either the Philippines or neighbouring Indonesia. However, officials cautioned that damage assessments were still ongoing and that information could change as more reports were received from remote areas.
The earthquake occurred offshore near Mindanao, the second-largest island in the Philippines. The region is known for frequent seismic activity because it lies within one of the most geologically active zones in the world. Several tectonic plates converge in the area, making it particularly vulnerable to earthquakes and volcanic events.
Experts noted that the Philippines experiences thousands of earthquakes every year due to its location along the Pacific Ring of Fire, a vast belt of seismic and volcanic activity that stretches around the Pacific Ocean. The region includes many of the world’s most active earthquake zones and volcanoes.
The strong earthquake also prompted a response from Indonesian authorities. Indonesia’s Meteorology, Climatology and Geophysics Agency issued an early tsunami warning for coastal areas in the northeastern part of the country. Officials said monitoring systems were activated immediately after the quake was detected and that coastal residents should remain vigilant.
Authorities in Indonesia advised local governments and emergency agencies to closely monitor sea-level changes and prepare for potential evacuation measures if required. The agency said tsunami waves generated by undersea earthquakes can travel significant distances and affect coastal regions far from the epicentre.
Meanwhile, disaster management agencies across the region continued monitoring developments and coordinating responses. Seismologists warned that aftershocks could follow the main earthquake and urged residents in affected areas to remain cautious.
As emergency teams worked to assess damage and ensure public safety, authorities in Japan, the Philippines and Indonesia emphasized the importance of following official advisories and evacuation orders. The powerful earthquake serves as another reminder of the seismic risks faced by countries located along the Pacific Ring of Fire, where major earthquakes and tsunami threats remain an ever-present concern.