Manila: The trough of a low-pressure area (LPA) and the southwesterly windflow will bring rains over several parts of the country, the weather bureau said Saturday. In its 4 a.m. bulletin, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) indicated that the southwesterly windflow will cause cloudy skies with scattered rains and thunderstorms in Palawan, Western Visayas, the Negros Island Region, Zamboanga Peninsula, and the Bangsamoro Autonomous Region in Muslim Mindanao.According to Philippines News Agency, the trough of the LPA will result in similar weather conditions in Metro Manila, Zambales, Bataan, Cavite, Batangas, and Occidental Mindoro. PAGASA warned that flash floods or landslides may occur in these areas during moderate to at times heavy rains.The rest of the country will experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms. Meanwhile, extreme Northern Luzon is expected to have moderate winds and moderate seas, while the r est of the archipelago will experience light to moderate winds and slight to moderate seas.