A magnitude 5.8 earthquake jolted Isabela on Thursday, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.
The tectonic quake struck 15 kilometers northeast of the municipality of Maconacon at 8:49 a.m. It was 42 km deep.
Intensity V was felt in Peñablanca, Enrile and Tuguegarao City in Cagayan. Intensity IV was reported in City of Batac, while Intensity II was felt in Pasuquin, Bacarra and City of Laoag, all in Ilocos Norte.
Phivolcs also logged the following instrumental intensities:
Intensity V – Peñablanca, Cagayan
Intensity IV – Gonzaga, Cagayan
Intensity III – Ilagan, Isabela
Intensity II – Casiguran, Aurora; Pasuquin, Laoag City, Batacin Ilocos Norte; Vigan City, Ilocos Sur; Santiago City, Isabela; Tabuk, Kalinga; Madella, Quirino
Intensity I – Bangued, Abra; Diapaculao, Baler, Aurora; Narvacan, Ilocos Sur; Bayombong, Nueva Vizcaya.
Reported intensity is the traditional way of knowing the intensity based on reports of people who felt the earthquake while instrumental intensity is measured using an intensity meter that measures ground acceleration.
Phivolcs said aftershocks are likely, but damage is not expected from the quake.
CURRENTPH NEWS SERVICE