The eastern sections of Northern and Central Luzon may still experience rains within the next 24 hours due to the prevalence of the tail-end of a frontal system.
The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said the low pressure area (LPA) that brought overnight rainfall traversed through Luzon and was already at 190 kilometers south-southwest of Puerto Princesa City, Palawan on Thursday morning.
There remains a slim chance that the LPA may develop into a tropical depression, PAGASA said.
Meanwhile, the tail-end of frontal system, which is the interaction of cold northeast monsoon or “amihan” and warm easterly winds, may bring moderate to heavy rains with at times intense rains over Isabela, eastern portion of mainland Cagayan, and northern and central portions of Aurora.
Moderate to heavy rains may also persist over the rest of Cagayan and Aurora, Batanes, Isabela, Quirino, and Nueva Vizcaya.
Light to moderate with at times heavy rains may affect Abra, Apayao, Benguet, Ifugao, Kalinga, Mountain Province, Nueva Ecija, northern portion of Quezon including Polillo Islands, and southern portion of Palawan including Balabac Island.
Flooding, including flash floods, and rain-induced landslides may occur during heavy or prolonged periods of rainfall, especially in areas that are highly susceptible to these hazards or have received significant amounts of rainfall during the past couple of days or weeks, PAGASA warned.
It also advised adjacent or nearby areas that may not have been directly affected by the rainfall to remain alert against possible flooding from surface runoff or swelling of river channels.
The rest of the country will be partly cloudy to cloudy with isolated rain showers due to localized thunderstorms. Possible flash floods or landslides may also occur during severe thunderstorms, PAGASA said.
Strong to gale force winds associated with the surge of amihan could cause rough to very rough seas over the northern, eastern, and western seaboards of Northern Luzon.
Fishing boats and other small boats were advised not to travel out to sea, while larger sea vessels were asked to remain alert against big waves due to risky sea travel over these waters.