State weather forecasters on Monday afternoon warned of possible flash floods from thunderstorms in southern Metro Manila and nearby areas.
PAGASA thunderstorms may affect Las Piñas, Parañaque and Muntinlupa Cities, along with Cavite, Laguna, Quezon, Nueva Ecija and Batangas.
In its advisory, PAGASA said thunderstorms may also be expected in Zambales and Bulacan.
"All are advised to take precautionary measures against heavy rains, strong winds, lightning and possible flash floods," it said.
PAGASA also issued a rainfall advisory where it said light to moderate to at times heavy rain is affecting Samar, Eastern Samar, and the northern part of Leyte.
Flash floods, landslides over MIMAROPA, West Visayas
Meanwhile, PAGASA said possible flash floods and landslides may occur over Mimaropa and Western Visayas in the next 24 hours as a low-pressure area was spotted near Palawan Monday afternoon.
As of 4 p.m. Monday, PAGASA said the LPA was estimated at 160 km west-northwest of Coron, Palawan, embedded along the Inter-tropical Convergence Zone (ITCZ) affecting the country.
"Mimaropa and Western Visayas will experience cloudy skies with moderate to occasionally heavy rain showers and thunderstorms which may trigger flash floods and landslides," it said in its 5 p.m. bulletin.
It added Metro Manila and the rest of the country will have "cloudy skies with light to moderate rain showers and thunderstorms."
Also, PAGASA said moderate to occasionally strong winds from the southwest will prevail over Palawan, Visayas and Mindanao and the coastal waters along these areas will be moderate to occasionally rough.
Light to moderate winds coming from the southwest to southeast will prevail over the rest of Luzon.
The coastal waters along these areas will be with slight to moderate, PAGASA said. — TJD, GMA News