Magnitude 6 quake rocks Northern Philippines

Update

MANILA, Philippines – A magnitude 6 earthquake shook a large swath of the Northern Philippines early Saturday, the Philippine Institute of Volcanology and Seismology (Phivolcs) said.

The quake, which struck 37 kilometers northeast of Basco, Batanes, was felt at Intensity IV in Basco and Itbayat, Batanes and Intensity III  in Tuguegarao City, Luna in Apayao.

Phivolcs initially placed its magnitude at 6.2.

Instrumental intensities recorded Intensity II in Laoag City and Pasuquin, Ilocos Norte and Intensity I in Vigan City.

The tectonic movement was located at a depth of 157 kilometers below the ground.  As of now, Phivolcs warned residents in the area to brace for possible aftershocks, while tsunami warnings have not been raised.