The western section of Luzon, including Batanes and Babuyan Islands will experience cloudy skies with scattered rain showers and thunderstorms, the weather bureau said.
PAGASA also said flash floods or landslides may result during times of moderate to heavy rains in those areas.
In its afternoon update, PAGASA said Metro Manila and the rest of the country will have partly cloudy to cloudy skies with isolated rain showers or thunderstorms.
PAGASA said it is also monitoring Tropical Storm Chaba (formerly known as Caloy), which was last spotted 1,230 kilometers west northwest of extreme northern Luzon, or outside the Philippine Area of Responsibility as of 3 p.m.
The weather bureau said ‘Caloy’ has sustained maximum winds of 65 kilometers per hour, and gustiness of up to 110 kph and was moving northward at 20 kph.
PAGASA also said wind speeds in northern and western section of Luzon are expected to be moderate to strong with moderate to strong coastal water conditions, ranging from 1.2 to 3.1