Philippines: Magnitude-5.1 offshore earthquake strikes east of Luzon May 23

Event

A magnitude-5.1 offshore earthquake occurred east of Luzon at 12:41 PHT May 23. The epicenter was about 83 km (51 miles) west-southwest of San Nicolas. The tremor occurred at a depth of about 9 km (5 miles), and light shaking likely occurred in southeastern parts of Luzon, including Olongapo. There have been no initial reports of damage or casualties because of the earthquake; however, it could take several hours until authorities can conduct comprehensive damage assessments, especially in remote areas. Aftershocks are possible over the coming days. Authorities have not issued any tsunami advisories.

Officials may temporarily shut down transportation infrastructure in the tremor zone to check for damage. Minor disruptions could occur during shutdowns, but service will likely resume quickly if no damage is found. Utility outages are possible, particularly near the earthquake's epicenter.

Advice

Plan accordingly for aftershocks. Consider vacating multistory buildings if operating in affected areas until authorities confirm their structural integrity. Allow additional time for air and road travel, as aftershocks may prompt brief disruptions. Seek updated information on road conditions before driving in hilly areas in the affected region due to potential landslides.