Manila: The northeast monsoon or 'amihan' will affect parts of Luzon, bringing cloudy skies and rains on Sunday, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said. In its 24-hour forecast, the weather bureau specified that the provinces of Cagayan Valley, Aurora, and Quezon would experience cloudy skies with moderate to at times heavy rains due to "amihan". According to Philippines News Agency, PAGASA warned that this weather could trigger flash floods and landslides, particularly in low-lying and mountainous regions. In Metro Manila and the rest of Luzon, the weather will be partly cloudy to cloudy, with isolated light rains also due to the northeast monsoon; however, no significant impact is expected in these areas. Meanwhile, the rest of the country, including the Visayas and Mindanao, will experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms due to the easterlies. This wind system also has the potential to cause localized flash floods or landslides, particularly during severe thunderstorms. Wind conditions will be moderate to strong in Northern Luzon and the eastern parts of Central and Southern Luzon, with winds coming from the east to northeast. Coastal waters in these regions are expected to be moderate to rough, with wave heights ranging from 2.1 to 3.4 meters, posing risks to small seacrafts. For the rest of the country, light to moderate winds will prevail, with coastal waters ranging from slight to moderate, making it safer for maritime activities.