MANILA, Philippines: At least four weather systems – shear line, northeast monsoon, easterlies and localized thunderstorms – will be affecting most parts of the country over the next 24 hours, the state-run weather agency said on Monday.

Weather specialist Robert Badrina of the Philippine Atmospheric Geophysical and Astronomical Services Administration (Pagasa) said the combined effects of shear line and easterlies are bringing overcast skies with scattered rain showers and thunderstorms over Eastern Visayas, Capiz, Aklan, Iloilo, Bicol Region and Romblon.