
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) is monitoring a new low pressure area (LPA) off the Pacific Ocean or still outside the country's area of responsibility on Monday morning, Dec. 20.
Weather specialist Aldczar Aurelio said the LPA is still too far to affect any part of the country but that PAGASA will continue to monitor the weather disturbance.
As of Monday, the shear line, also known as the tail-end of frontal system, and the northeast monsoon, locally called "amihan," remain the dominant weather systems in the country, Aurelio said.
Due to the shear line, cloudy skies with scattered rain showers and thunderstorms may prevail over Aurora, Batanes, Cagayan, Quirino, Isabela, and Nueva Vizcaya in the next 24 hours.
Those in these areas were advised to take precautions against possible flooding or landslides, especially during moderate to, at times, heavy rains.
PAGASA, meanwhile, said the amihan may bring partly cloudy to cloudy skies with isolated light rains over Ilocos Norte, Ilocos Sur, La Union, Pangasinan, Abra, Apayao, Benguet, Kalinga, Ifugao, and Mountain Province.
Meanwhile, Metro Manila and the rest of the country may experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms.