MANILA, Philippines — Typhoon 'Ofel' (international name: Usagi) continues to weaken over the Babuyan Islands as it heads towards Taiwan, the Philippine Atmospheric Geophysical Astronomical Services Administration (Pagasa) said on Thursday..

In its 8 p.m. bulletin, Pagasa said areas under Signal No. 4 were as follows: Babuyan Islands and the northern and eastern portions of mainland Cagayan (anta Teresita, Ballesteros, Aparri, Camalaniugan, Buguey, Lal-Lo, Allacapan, Gattaran, Baggao, Gonzaga, Santa Ana, Abulug, Pamplona, Sanchez-Mira, Claveria, Santa Praxedes).