MANILA – The southwest monsoon (habagat) continues to affect Extreme Northern Luzon, while localized thunderstorms are expected to bring isolated rainshowers over the rest of the country, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said Friday. In its 4 a.m. weather bulletin, PAGASA said Ilocos Norte, Ilocos Sur, Abra, Batanes, and the Babuyan…