MANILA – The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) has issued a weather advisory, forecasting that three prevailing weather systems will bring rain to various parts of the country this week.

The shear line, which occurs when two air masses meet, is expected to cause scattered rain showers and isolated thunderstorms across Eastern Visayas, Northern Mindanao, and Caraga. PAGASA warned that these areas may experience intermittent rainfall and thunderstorms throughout the day.

Meanwhile, the easterlies will affect the remaining parts of the Visayas and Mindanao, bringing similar weather conditions—scattered rain showers and occasional thunderstorms.

In addition, the northeast monsoon, or “amihan,” is forecast to bring cooler weather and rain to parts of Luzon. Affected areas include Cagayan Valley, the Cordillera Administrative Region, Aurora, and Quezon, where moderate to heavy rains could lead to flash floods and landslides.

PAGASA has urged residents in these areas to remain vigilant as the weather conditions could cause potential hazards, especially in mountainous and flood-prone regions.

The rest of Luzon will experience isolated light rains brought on by the northeast monsoon, while the eastern sections of Southern Luzon and the Visayas will experience strong winds and rough seas. Moderate to strong winds and moderate to rough coastal waters are expected across the rest of Luzon, Visayas, and the northern and eastern parts of Mindanao.

In contrast, the remaining areas of the country will experience light to moderate winds, with generally slight to moderate seas, according to PAGASA.

Residents and travelers across the affected regions are advised to stay informed about the latest weather updates and take precautions, especially in areas prone to flooding and landslides.

ia/mnm