The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) on Monday, Jan. 12 said it is monitoring the possible formation of a low-pressure area (LPA) within the next two days, which may affect parts of Eastern Visayas and Caraga by Wednesday, Jan. 14.

PAGASA weather specialist Aldczar Aurelio said there is no LPA inside or outside the Philippine area of responsibility (PAR) as of Monday, but a possible trough or extension of an LPA may bring rains by midweek.

If it develops into a tropical cyclone within the Philippine area of responsibility, it will be named “Ada,” the first cyclone name on PAGASA’s list for 2026.

As of Monday, PAGASA said there will be no widespread rains, but isolated to scattered rains may affect parts of the country.

The shear line, or the interaction between cold air from the northeast monsoon or “amihan” and warm air from the easterlies from the Pacific Ocean, is affecting Northern and Central Luzon, which will bring cloudy skies with scattered rains and isolated thunderstorms particularly over Cagayan, Isabela, Aurora, and Quezon.

The amihan is also affecting the rest of Northern and Central Luzon, especially the Cordillera Administrative Region and the rest of Cagayan Valley, which will experience cloudy skies with light rains.

Partly cloudy to cloudy skies with isolated light rains may prevail over Metro Manila, Ilocos Region, and the rest of Central Luzon due to amihan.

The rest of the country will experience partly cloudy to cloudy skies with isolated rain showers or thunderstorms.

Aurelio said the shear line and amihan may continue to affect several areas in Northern and Central Luzon until Wednesday, with scattered rains and isolated thunderstorms still likely over Cagayan, Isabela, and Aurora.

PAGASA advised the public, especially residents in areas prone to flooding and landslides, to continue monitoring official weather bulletins in the coming days.