The Philippines will experience mostly cloudy skies, scattered rains, and isolated thunderstorms in the coming week due to the ongoing influence of the shear line and the northeast monsoon (amihan), based on the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) weather outlook from Feb. 21 to 28.
PAGASA said the shear line will bring cloudy skies with scattered rains and isolated thunderstorms to several areas, including Quezon, Oriental Mindoro, Occidental Mindoro, Marinduque, Romblon, Palawan, Bicol, Caraga, Zamboanga Peninsula, Davao Region, and Northern Mindanao until Saturday, Feb. 22.
The shear line is a weather system that forms when cold winds from the amihan collide with warm breezes from the Pacific Ocean (easterlies).
At the same time, the amihan will bring mostly cloudy skies and rains to Cagayan Valley, Cordillera Administrative Region (CAR), and Aurora.
The rest of the country will experience partly cloudy to cloudy skies with scattered rain showers or isolated thunderstorms.
Similar weather conditions will persist from Sunday to Monday, Feb. 23 to 24, with scattered rains and isolated thunderstorms continuing in the Bicol Region, Eastern Visayas, and Caraga due to the shear line.
Cagayan Valley, CAR, Aurora, and Quezon will still be under the influence of the amihan, resulting in mostly cloudy skies with rains.
The rest of the country will remain partly cloudy, with occasional rain showers or thunderstorms.
From Tuesday to Friday, Feb. 25 to 28, the shear line will continue to bring mostly cloudy skies with scattered rains and isolated thunderstorms over Eastern Visayas, Caraga, and Davao Region, while the amihan will cause isolated rains in Cagayan Valley, Bicol Region, Aurora, and Quezon.
The rest of the country will see partly cloudy to cloudy skies, with rain showers or isolated thunderstorms.
PAGASA added that there is no significant threat of tropical cyclones during this period.
However, residents in areas affected by rain-bearing weather systems are advised to stay alert for possible flash floods or landslides.