The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) continues to monitor a tropical storm, with an international name "Nyatoh," as it may enter the country's area of responsibility between Wednesday afternoon and evening, Dec. 1.

PAGASA weather specialist Aldczar Aurelio said the center of Nyatoh was located 1,330 kilometers east of southern Luzon at around 3 a.m., Wednesday.

It has maximum sustained winds of 85 kilometers per hour (kph) near the center and gustiness of up to 105 kph while moving west-northwestward at 15 kph.

Aurelio said Nyatoh will be assigned its local name "Odette" once inside the Philippine area of responsibility (PAR) Wednesday afternoon or evening.

He added that the storm is only expected to stay briefly inside the PAR and may have no direct effect on the country in the next few days.

However, Aurelio said PAGASA will continue to monitor this weather disturbance for a possible change in the scenario.

PAGASA said the northeast monsoon, locally called "amihan," will be the dominant weather system, particularly affecting Luzon.

In the next 24 hours, cloudy skies and rains may prevail over Batanes, Cagayan, Isabela, Quirino, and Aurora.

PAGASA warned those in these areas to stay vigilant against possible flash floods or landslides, particularly in the event of moderate to, at times, heavy rains.

Metro Manila and the rest of Luzon will only have partly cloudy to cloudy skies and isolated light rains due to the amihan.

Meanwhile, Visayas and Mindanao may experience partly cloudy to cloudy skies with isolated rain showers due to localized thunderstorms.

Those in Visayas and Mindanao should also remain vigilant as severe thunderstorm activities may sometimes trigger flash floods or landslides, PAGASA said.