What Is The Strongest Earthquake In The Philippines?

What Is The Strongest Earthquake In The Philippines? 1968 August 02 Casiguran Earthquake. At 4:19 AM (local time) on August 02, 1968 an earthquake with an intensity of VIII in the Rossi-Forel Intensity Scale rocked the town of Casiguran, Aurora. This was considered the most severe and destructive earthquake experienced in the Philippines during the