MANILA - A 5.4-magnitude earthquake struck off Cagayan province Friday night, the Phivolcs said.
The tectonic tremor occurred at 7:54 p.m. some 47 kilometers southwest of Calayan town. It had a depth of 45 kms.
Intensity 4, which could generate "moderately strong" shaking, was reported in Calayan.
Bacarra in Ilocos Norte and Flora in Apayao experienced Intensity 3, which may be felt like a passing of a light truck, Phivolcs said. Intensity 2 was reported in Sinait, Ilocos Sur.
Meanwhile, Instrumental Intensity 4 was recorded in Pasuquin, Ilocos Norte and Intensity 2 in Vigan City.
Phivolcs said the quake would not cause damage, but would generate aftershocks.