Scattered rains will prevail over Luzon due to a low-pressure area (LPA) in Bulacan, the Philippine Atmospheric, Geophysical, and Astronomical Services Administration said Friday.
PAGASA said the LPA was spotted in the vicinity of Bubulong Munti, San Ildefonso, as of 3 a.m. Friday.
PAGASA weather specialist Lorie dela Cruz said the weather disturbance still has a slim chance of developing into a tropical storm and is expected to dissipate within the next 24 hours.
However, while the LPA is currently active, Dela Cruz said it will bring cloudy skies with scattered rain showers and thunderstorms in Metro Manila, Central Luzon, Calabarzon, La Union, and Pangasinan.
The easterlies or the warm winds from the Pacific Ocean is affecting parts of Mindanao and will trigger scattered rains and thunderstorms in Caraga and Davao region.
PAGASA warned residents in areas affected by the LPA and easterlies that possible flash floods or landslides may occur during moderate to at times heavy rains.
Cloudy skies with light rains are expected in the northern part of Luzon, including the Cordillera Administrative Region, Cagayan Valley, and the rest of Ilocos region due to the prevailing northeast monsoon or "amihan."
Dela Cruz said generally good weather will be experienced over the Bicol region, Mimaropa, Visayas, and the rest of Mindanao but partly cloudy to cloudy skies with isolated rain showers or thunderstorms are also expected due to easterlies.
Due to the surge of amihan, strong to gale force winds are expected on the seaboards of Luzon.
PAGASA raised a gale warning on the coasts of Batanes, Cagayan, including Babuyan Islands, Ilocos Norte, Ilocos Sur, Isabela, Aurora, northern Quezon (Gen. Nakar), including Polillo Islands (Panukulan, northern Burdeos, and the northern and eastern coasts of Patnanungan and Jomalig), Camarines Norte, the northern coast of Camarines Sur, and the northern and eastern coasts of Catanduanes.
Sea travel remains risky, especially for small sea craft, over these seaboards where a gale warning was raised due to rough to very rough sea conditions and wave height of up to 4.5 meters.
PAGASA said more rains are expected in the coming months due to the onset of La Niña.