How often does an earthquake occur?
Earthquakes are always happening somewhere. Large earthquakes occur about once a year. Smaller earthquakes, such as magnitude 2 earthquakes, occur several hundred times a day. To create a mountain system might take several million medium size earthquakes over tens of millions of years.
What is the most destructive earthquake happened 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 last 20 years.
What is the biggest magnitude earthquake in Philippines?
In 2019, a record of a 6.9 magnitude earthquake occurred in Davao Del Sur province of the Philippines. Within the same year, several earthquakes occurred in Cotabato city with the highest magnitude level of 6.6 in the Philippines.