Be cautious of strong aftershocks from Cagayan quake

By Ma. Cristina Arayata

September 13, 2023, 5:58 pm

MANILA – The head of the Philippine Institute of Volcanology and Seismology (Phivolcs) on Wednesday said residents of Cagayan and Northern Luzon should be cautious of strong aftershocks, following the magnitude 6.3 earthquake that jolted those areas on Tuesday night.

The Phivolcs has so far logged 104 aftershocks, with magnitudes ranging from 1.5 to 3.7. Nineteen of these were plotted or located while none was felt, it added.

"People should be cautious of strong aftershocks. In case of a strongly felt earthquake, people should protect themselves by doing the drop, cover and hold practice," Phivolcs Director Teresito Bacolcol told the Philippine News Agency.

He added that people should be cautious of structures that have visibly weakened or have signs of damage caused by a series of earthquakes that could further damage the structures and injure building occupants.

"It is best to contact the municipality or city engineering office for inspection and advice," he said.

Bacolcol said aftershocks normally diminish over time, but the occurrence could last for several days to several weeks.

The magnitude 6.3 earthquake that occurred at 7:03 p.m., he said, was caused by one offshore active fault along Dalupiri Island, adding that there are several faults in the area.

The earthquake's epicenter was traced 19 km. northwest of Dalupiri Island, and was felt at intensity VI in Calayan, Cagayan. (PNA)