The southwest monsoon or "habagat" and the trough of a low pressure area (LPA) will be the dominant weather systems that may affect extreme northern Luzon, Visayas, and Mindanao in the next 24 hours, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said on Sunday afternoon, Aug. 8.
Scattered rain showers and thunderstorms may prevail over Batanes and Babuyan Islands due to the habagat enhanced by tropical storm "Lupit" (formerly "Huaning").
PAGASA is also monitoring an LPA that was located 855 kilometers east of Visayas or inside the Philippine area of responsibility on Sunday afternoon.
While the LPA still has a slim chance of intensifying into a tropical depression within 12 to 24 hours, PAGASA said Visayas and Mindanao may already experience scattered rain showers and thunderstorms due to the trough or extension of this weather disturbance.
PAGASA warned against possible flash floods or landslides as rains may sometimes become moderate to heavy.
The possibility of the LPA developing into a tropical depression beyond the 24-hour monitoring period is still not ruled out.
Meanwhile, Metro Manila and the rest of Luzon will continue to have partly cloudy to cloudy conditions with a chance of isolated rain showers or thunderstorms.
PAGASA also advised the public to remain vigilant against flash floods or landslides that may occur during severe thunderstorms.